From cc079b6683aa7b597530de247e08b2326941898e Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 26 Dec 2022 10:40:49 +0100
Subject: [PATCH 001/250] Fix %eval sometimes off by one centipawn

---
 chess/engine.py | 14 +++++++-------
 chess/pgn.py    |  2 +-
 test.py         |  6 ++++++
 3 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index a431df7da..f319d09bf 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1538,16 +1538,16 @@ def _go(self, limit: Limit, *, root_moves: Optional[Iterable[chess.Move]] = None
             builder.append("ponder")
         if limit.white_clock is not None:
             builder.append("wtime")
-            builder.append(str(max(1, int(limit.white_clock * 1000))))
+            builder.append(str(max(1, round(limit.white_clock * 1000))))
         if limit.black_clock is not None:
             builder.append("btime")
-            builder.append(str(max(1, int(limit.black_clock * 1000))))
+            builder.append(str(max(1, round(limit.black_clock * 1000))))
         if limit.white_inc is not None:
             builder.append("winc")
-            builder.append(str(int(limit.white_inc * 1000)))
+            builder.append(str(round(limit.white_inc * 1000)))
         if limit.black_inc is not None:
             builder.append("binc")
-            builder.append(str(int(limit.black_inc * 1000)))
+            builder.append(str(round(limit.black_inc * 1000)))
         if limit.remaining_moves is not None and int(limit.remaining_moves) > 0:
             builder.append("movestogo")
             builder.append(str(int(limit.remaining_moves)))
@@ -1562,7 +1562,7 @@ def _go(self, limit: Limit, *, root_moves: Optional[Iterable[chess.Move]] = None
             builder.append(str(max(1, int(limit.mate))))
         if limit.time is not None:
             builder.append("movetime")
-            builder.append(str(max(1, int(limit.time * 1000))))
+            builder.append(str(max(1, round(limit.time * 1000))))
         if infinite:
             builder.append("infinite")
         if root_moves is not None:
@@ -2160,9 +2160,9 @@ def start(self, engine: XBoardProtocol) -> None:
                 if limit.depth is not None:
                     engine.send_line(f"sd {max(1, int(limit.depth))}")
                 if limit.white_clock is not None:
-                    engine.send_line("{} {}".format("time" if board.turn else "otim", max(1, int(limit.white_clock * 100))))
+                    engine.send_line("{} {}".format("time" if board.turn else "otim", max(1, round(limit.white_clock * 100))))
                 if limit.black_clock is not None:
-                    engine.send_line("{} {}".format("otim" if board.turn else "time", max(1, int(limit.black_clock * 100))))
+                    engine.send_line("{} {}".format("otim" if board.turn else "time", max(1, round(limit.black_clock * 100))))
 
                 if draw_offered and engine.features.get("draw", 1):
                     engine.send_line("draw")
diff --git a/chess/pgn.py b/chess/pgn.py
index da97866c3..f802a780f 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -420,7 +420,7 @@ def eval(self) -> Optional[chess.engine.PovScore]:
                 # who has been mated.
                 return chess.engine.PovScore(score, turn)
         else:
-            score = chess.engine.Cp(int(float(match.group("cp")) * 100))
+            score = chess.engine.Cp(round(float(match.group("cp")) * 100))
 
         return chess.engine.PovScore(score if turn else -score, turn)
 
diff --git a/test.py b/test.py
index b9be057e1..29ea02749 100755
--- a/test.py
+++ b/test.py
@@ -2806,6 +2806,12 @@ def test_annotations(self):
         game.set_arrows([])
         self.assertEqual(game.comment, "foo [%bar] baz")
 
+    def test_eval(self):
+        game = chess.pgn.Game()
+        for cp in range(199, 220):
+            game.set_eval(chess.engine.PovScore(chess.engine.Cp(cp), chess.WHITE))
+            self.assertEqual(game.eval().white().cp, cp)
+
     def test_float_emt(self):
         game = chess.pgn.Game()
         game.comment = "[%emt 0:00:01.234]"

From 8628abbb65386f6622cf38d519209e123a654b8b Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 29 Dec 2022 21:50:24 +0100
Subject: [PATCH 002/250] Keep misc PGN headers in insertion order

---
 chess/pgn.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index f802a780f..1a01b034e 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -810,11 +810,11 @@ def setup(self, board: Union[chess.Board, str]) -> None:
             fen = setup.fen()
 
         if fen == type(setup).starting_fen:
-            self.headers.pop("SetUp", None)
             self.headers.pop("FEN", None)
+            self.headers.pop("SetUp", None)
         else:
-            self.headers["SetUp"] = "1"
             self.headers["FEN"] = fen
+            self.headers["SetUp"] = "1"
 
         if type(setup).aliases[0] == "Standard" and setup.chess960:
             self.headers["Variant"] = "Chess960"
@@ -957,7 +957,7 @@ def __iter__(self) -> Iterator[str]:
             if key in self._tag_roster:
                 yield key
 
-        yield from sorted(self._others)
+        yield from self._others
 
     def __len__(self) -> int:
         return len(self._tag_roster) + len(self._others)

From 6e1f435ba60536a1d36728b9309427777f2c5198 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 5 Jan 2023 20:16:10 +0100
Subject: [PATCH 003/250] Try Sphinx 6.x

---
 docs/requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/requirements.txt b/docs/requirements.txt
index dd8706637..f18b82961 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1 @@
-Sphinx==5.3.0
+Sphinx==6.1.1

From b3e634d21e7b0c4262da89a766f1dd1a00a2baa2 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 5 Jan 2023 20:21:27 +0100
Subject: [PATCH 004/250] Fix indent of :raises: lists

---
 chess/__init__.py | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 883d5fbda..e205bba8e 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -2987,9 +2987,10 @@ def parse_san(self, san: str) -> Move:
 
         :raises:
             :exc:`ValueError` (specifically an exception specified below) if the SAN is invalid, illegal or ambiguous.
-                - :exc:`InvalidMoveError` if the SAN is syntactically invalid.
-                - :exc:`IllegalMoveError` if the SAN is illegal.
-                - :exc:`AmbiguousMoveError` if the SAN is ambiguous.
+
+            - :exc:`InvalidMoveError` if the SAN is syntactically invalid.
+            - :exc:`IllegalMoveError` if the SAN is illegal.
+            - :exc:`AmbiguousMoveError` if the SAN is ambiguous.
         """
         # Castling.
         try:
@@ -3072,9 +3073,10 @@ def push_san(self, san: str) -> Move:
 
         :raises:
             :exc:`ValueError` (specifically an exception specified below) if neither legal nor a null move.
-                - :exc:`InvalidMoveError` if the SAN is syntactically invalid.
-                - :exc:`IllegalMoveError` if the SAN is illegal.
-                - :exc:`AmbiguousMoveError` if the SAN is ambiguous.
+
+            - :exc:`InvalidMoveError` if the SAN is syntactically invalid.
+            - :exc:`IllegalMoveError` if the SAN is illegal.
+            - :exc:`AmbiguousMoveError` if the SAN is ambiguous.
         """
         move = self.parse_san(san)
         self.push(move)
@@ -3105,8 +3107,9 @@ def parse_uci(self, uci: str) -> Move:
         :raises:
             :exc:`ValueError` (specifically an exception specified below) if the move is invalid or illegal in the
             current position (but not a null move).
-                - :exc:`InvalidMoveError` if the UCI is syntactically invalid.
-                - :exc:`IllegalMoveError` if the UCI is illegal.
+
+            - :exc:`InvalidMoveError` if the UCI is syntactically invalid.
+            - :exc:`IllegalMoveError` if the UCI is illegal.
         """
         move = Move.from_uci(uci)
 
@@ -3130,8 +3133,9 @@ def push_uci(self, uci: str) -> Move:
         :raises:
             :exc:`ValueError` (specifically an exception specified below) if the move is invalid or illegal in the
             current position (but not a null move).
-                - :exc:`InvalidMoveError` if the UCI is syntactically invalid.
-                - :exc:`IllegalMoveError` if the UCI is illegal.
+
+            - :exc:`InvalidMoveError` if the UCI is syntactically invalid.
+            - :exc:`IllegalMoveError` if the UCI is illegal.
         """
         move = self.parse_uci(uci)
         self.push(move)

From d7c3edb0e69fe42db978982e93f0694a9e519f7b Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 7 Jan 2023 20:02:27 +0100
Subject: [PATCH 005/250] Close Syzygy table file descriptors after mmap

---
 chess/syzygy.py | 39 ++++++++++++++++++++-------------------
 1 file changed, 20 insertions(+), 19 deletions(-)

diff --git a/chess/syzygy.py b/chess/syzygy.py
index 0266ea422..28cc9c4d0 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -559,7 +559,6 @@ def __init__(self, path: str, *, variant: Type[chess.Board] = chess.Board) -> No
 
         self.write_lock = threading.RLock()
         self.initialized = False
-        self.fd: Optional[int] = None
         self.data: Optional[mmap.mmap] = None
 
         self.read_condition = threading.Condition()
@@ -602,23 +601,29 @@ def __init__(self, path: str, *, variant: Type[chess.Board] = chess.Board) -> No
                         self.enc_type = 1 + j
 
     def init_mmap(self) -> None:
+        if self.data is not None:
+            return
+
         with self.write_lock:
-            # Open fd.
-            if self.fd is None:
-                self.fd = os.open(self.path, os.O_RDONLY | os.O_BINARY if hasattr(os, "O_BINARY") else os.O_RDONLY)
+            if self.data is not None:
+                return
+
+            fd = os.open(self.path, os.O_RDONLY | os.O_BINARY if hasattr(os, "O_BINARY") else os.O_RDONLY)
+            try:
+                data = mmap.mmap(fd, 0, access=mmap.ACCESS_READ)
+            finally:
+                os.close(fd)
 
-            # Open mmap.
-            if self.data is None:
-                data = mmap.mmap(self.fd, 0, access=mmap.ACCESS_READ)
-                if data.size() % 64 != 16:
-                    raise IOError(f"invalid file size: ensure {self.path!r} is a valid syzygy tablebase file")
-                self.data = data
+            if data.size() % 64 != 16:
+                raise IOError(f"invalid file size: ensure {self.path!r} is a valid syzygy tablebase file")
 
-                try:
-                    # Python 3.8
-                    self.data.madvise(mmap.MADV_RANDOM)
-                except AttributeError:
-                    pass
+            try:
+                # Python 3.8
+                data.madvise(mmap.MADV_RANDOM)
+            except AttributeError:
+                pass
+
+            self.data = data
 
     def check_magic(self, magic: Optional[bytes], pawnless_magic: Optional[bytes]) -> None:
         assert self.data
@@ -1045,10 +1050,6 @@ def close(self) -> None:
                     self.data.close()
                     self.data = None
 
-                if self.fd is not None:
-                    os.close(self.fd)
-                    self.fd = None
-
     def __enter__(self: TableT) -> TableT:
         return self
 

From 9cb8d3ba11183713314f817f6b6ccef18d1bde88 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 7 Jan 2023 20:05:56 +0100
Subject: [PATCH 006/250] Close PolyGlot file descriptors after mmap

---
 chess/polyglot.py | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/chess/polyglot.py b/chess/polyglot.py
index 1562d5306..c56c5ecfb 100644
--- a/chess/polyglot.py
+++ b/chess/polyglot.py
@@ -337,12 +337,13 @@ class MemoryMappedReader:
     """Maps a Polyglot opening book to memory."""
 
     def __init__(self, filename: PathLike) -> None:
-        self.fd = os.open(filename, os.O_RDONLY | os.O_BINARY if hasattr(os, "O_BINARY") else os.O_RDONLY)
-
+        fd = os.open(filename, os.O_RDONLY | os.O_BINARY if hasattr(os, "O_BINARY") else os.O_RDONLY)
         try:
-            self.mmap: Union[mmap.mmap, _EmptyMmap] = mmap.mmap(self.fd, 0, access=mmap.ACCESS_READ)
+            self.mmap: Union[mmap.mmap, _EmptyMmap] = mmap.mmap(fd, 0, access=mmap.ACCESS_READ)
         except (ValueError, OSError):
             self.mmap = _EmptyMmap()  # Workaround for empty opening books.
+        finally:
+            os.close(fd)
 
         if self.mmap.size() % ENTRY_STRUCT.size != 0:
             raise IOError(f"invalid file size: ensure {filename!r} is a valid polyglot opening book")
@@ -514,11 +515,6 @@ def close(self) -> None:
         """Closes the reader."""
         self.mmap.close()
 
-        try:
-            os.close(self.fd)
-        except OSError:
-            pass
-
 
 def open_reader(path: PathLike) -> MemoryMappedReader:
     """

From 3fd11884ee0ae114ab243d9f66da500dff6b9bf6 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 7 Jan 2023 20:20:28 +0100
Subject: [PATCH 007/250] Simplify syzygy.Table.init_mmap()

---
 chess/syzygy.py | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/chess/syzygy.py b/chess/syzygy.py
index 28cc9c4d0..4fe070c91 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -601,13 +601,7 @@ def __init__(self, path: str, *, variant: Type[chess.Board] = chess.Board) -> No
                         self.enc_type = 1 + j
 
     def init_mmap(self) -> None:
-        if self.data is not None:
-            return
-
-        with self.write_lock:
-            if self.data is not None:
-                return
-
+        if self.data is None:
             fd = os.open(self.path, os.O_RDONLY | os.O_BINARY if hasattr(os, "O_BINARY") else os.O_RDONLY)
             try:
                 data = mmap.mmap(fd, 0, access=mmap.ACCESS_READ)

From ebb7b3987715a889f18d0d65382a1f162c261901 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 7 Jan 2023 20:56:50 +0100
Subject: [PATCH 008/250] Change default of Tablebase.max_fds to None

This is compatible thanks to the new implementation, which does not keep
open file descriptors around in any case.
---
 chess/syzygy.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/chess/syzygy.py b/chess/syzygy.py
index 4fe070c91..45eb963d0 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -1482,12 +1482,8 @@ def setup_pieces_pawn_dtz(self, p_data: int, p_tb_size: int, f: int) -> None:
 class Tablebase:
     """
     Manages a collection of tablebase files for probing.
-
-    If *max_fds* is not ``None``, will at most use *max_fds* open file
-    descriptors at any given time. The least recently used tables are closed,
-    if necessary.
     """
-    def __init__(self, *, max_fds: Optional[int] = 128, VariantBoard: Type[chess.Board] = chess.Board) -> None:
+    def __init__(self, *, max_fds: Optional[int] = None, VariantBoard: Type[chess.Board] = chess.Board) -> None:
         self.variant = VariantBoard
 
         self.max_fds = max_fds
@@ -1967,7 +1963,7 @@ def __exit__(self, exc_type: Optional[Type[BaseException]], exc_value: Optional[
         self.close()
 
 
-def open_tablebase(directory: str, *, load_wdl: bool = True, load_dtz: bool = True, max_fds: Optional[int] = 128, VariantBoard: Type[chess.Board] = chess.Board) -> Tablebase:
+def open_tablebase(directory: str, *, load_wdl: bool = True, load_dtz: bool = True, max_fds: Optional[int] = None, VariantBoard: Type[chess.Board] = chess.Board) -> Tablebase:
     """
     Opens a collection of tables for probing. See
     :class:`~chess.syzygy.Tablebase`.
@@ -1981,6 +1977,10 @@ def open_tablebase(directory: str, *, load_wdl: bool = True, load_dtz: bool = Tr
         are often distributed separately, but are both required for 6-piece
         positions. Use :func:`~chess.syzygy.Tablebase.add_directory()` to load
         tables from additional directories.
+
+    :param max_fds: If *max_fds* is not ``None``, will at most use *max_fds*
+        open file descriptors at any given time. The least recently used tables
+        are closed, if necessary.
     """
     tables = Tablebase(max_fds=max_fds, VariantBoard=VariantBoard)
     tables.add_directory(directory, load_wdl=load_wdl, load_dtz=load_dtz)

From 1985e6d5acce645354c5c6c8d7d65c0499715953 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 7 Jan 2023 21:09:58 +0100
Subject: [PATCH 009/250] Bump Sphinx to 6.1.2

---
 docs/requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/requirements.txt b/docs/requirements.txt
index f18b82961..8f65fe1fd 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1 @@
-Sphinx==6.1.1
+Sphinx==6.1.2

From 57fce306c93a22c00d3b91cea68c618683987df3 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 20 Jan 2023 20:53:24 +0100
Subject: [PATCH 010/250] Add chess960.perft

---
 .github/workflows/test.yml    |    1 +
 examples/perft/chess960.perft | 8641 +++++++++++++++++++++++++++++++++
 2 files changed, 8642 insertions(+)
 create mode 100644 examples/perft/chess960.perft

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 68ab5bb19..95e9a3728 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,6 +27,7 @@ jobs:
           python-version: "3.11"
       - run: pip install -e .
       - run: python examples/perft/perft.py -t 1 examples/perft/random.perft --max-nodes 10000
+      - run: python examples/perft/perft.py -t 1 examples/perft/chess960.perft --max-nodes 100000
       - run: python examples/perft/perft.py -t 1 examples/perft/tricky.perft
       - run: python examples/perft/perft.py -t 1 --variant giveaway examples/perft/giveaway.perft
       - run: python examples/perft/perft.py -t 1 --variant atomic examples/perft/atomic.perft
diff --git a/examples/perft/chess960.perft b/examples/perft/chess960.perft
new file mode 100644
index 000000000..0d14d5da0
--- /dev/null
+++ b/examples/perft/chess960.perft
@@ -0,0 +1,8641 @@
+# https://www.chessprogramming.org/Chess960_Perft_Results
+
+id 1
+epd bqnb1rkr/pp3ppp/3ppn2/2p5/5P2/P2P4/NPP1P1PP/BQ1BNRKR w HFhf - 2 9
+perft 1 21
+perft 2 528
+perft 3 12189
+perft 4 326672
+perft 5 8146062
+perft 6 227689589
+
+id 1
+epd 2nnrbkr/p1qppppp/8/1ppb4/6PP/3PP3/PPP2P2/BQNNRBKR w HEhe - 1 9
+perft 1 21
+perft 2 807
+perft 3 18002
+perft 4 667366
+perft 5 16253601
+perft 6 590751109
+
+id 1
+epd b1q1rrkb/pppppppp/3nn3/8/P7/1PPP4/4PPPP/BQNNRKRB w GE - 1 9
+perft 1 20
+perft 2 479
+perft 3 10471
+perft 4 273318
+perft 5 6417013
+perft 6 177654692
+
+id 1
+epd qbbnnrkr/2pp2pp/p7/1p2pp2/8/P3PP2/1PPP1KPP/QBBNNR1R w hf - 0 9
+perft 1 22
+perft 2 593
+perft 3 13440
+perft 4 382958
+perft 5 9183776
+perft 6 274103539
+
+id 1
+epd 1nbbnrkr/p1p1ppp1/3p4/1p3P1p/3Pq2P/8/PPP1P1P1/QNBBNRKR w HFhf - 0 9
+perft 1 28
+perft 2 1120
+perft 3 31058
+perft 4 1171749
+perft 5 34030312
+perft 6 1250970898
+
+id 1
+epd qnbnr1kr/ppp1b1pp/4p3/3p1p2/8/2NPP3/PPP1BPPP/QNB1R1KR w HEhe - 1 9
+perft 1 29
+perft 2 899
+perft 3 26578
+perft 4 824055
+perft 5 24851983
+perft 6 775718317
+
+id 1
+epd q1bnrkr1/ppppp2p/2n2p2/4b1p1/2NP4/8/PPP1PPPP/QNB1RRKB w ge - 1 9
+perft 1 30
+perft 2 860
+perft 3 24566
+perft 4 732757
+perft 5 21093346
+perft 6 649209803
+
+id 1
+epd qbn1brkr/ppp1p1p1/2n4p/3p1p2/P7/6PP/QPPPPP2/1BNNBRKR w HFhf - 0 9
+perft 1 25
+perft 2 635
+perft 3 17054
+perft 4 465806
+perft 5 13203304
+perft 6 377184252
+
+id 1
+epd qnnbbrkr/1p2ppp1/2pp3p/p7/1P5P/2NP4/P1P1PPP1/Q1NBBRKR w HFhf - 0 9
+perft 1 24
+perft 2 572
+perft 3 15243
+perft 4 384260
+perft 5 11110203
+perft 6 293989890
+
+id 1
+epd qn1rbbkr/ppp2p1p/1n1pp1p1/8/3P4/P6P/1PP1PPPK/QNNRBB1R w hd - 2 9
+perft 1 28
+perft 2 811
+perft 3 23175
+perft 4 679699
+perft 5 19836606
+perft 6 594527992
+
+id 1
+epd qnr1bkrb/pppp2pp/3np3/5p2/8/P2P2P1/NPP1PP1P/QN1RBKRB w GDg - 3 9
+perft 1 33
+perft 2 823
+perft 3 26895
+perft 4 713420
+perft 5 23114629
+perft 6 646390782
+
+id 1
+epd qb1nrkbr/1pppp1p1/1n3p2/p1B4p/8/3P1P1P/PPP1P1P1/QBNNRK1R w HEhe - 0 9
+perft 1 31
+perft 2 855
+perft 3 25620
+perft 4 735703
+perft 5 21796206
+perft 6 651054626
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From 57c9f87cbf8d57d13dce787fe243500adac4a67c Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 20 Jan 2023 21:56:17 +0100
Subject: [PATCH 011/250] Fix ids in chess960.perft

---
 examples/perft/chess960.perft | 1919 +++++++++++++++++----------------
 1 file changed, 960 insertions(+), 959 deletions(-)

diff --git a/examples/perft/chess960.perft b/examples/perft/chess960.perft
index 0d14d5da0..76be26eed 100644
--- a/examples/perft/chess960.perft
+++ b/examples/perft/chess960.perft
@@ -1,6 +1,7 @@
 # https://www.chessprogramming.org/Chess960_Perft_Results
+# https://github.com/AndyGrant/Ethereal/blob/master/src/perft/fischer.epd
 
-id 1
+id 0
 epd bqnb1rkr/pp3ppp/3ppn2/2p5/5P2/P2P4/NPP1P1PP/BQ1BNRKR w HFhf - 2 9
 perft 1 21
 perft 2 528
@@ -18,7 +19,7 @@ perft 4 667366
 perft 5 16253601
 perft 6 590751109
 
-id 1
+id 2
 epd b1q1rrkb/pppppppp/3nn3/8/P7/1PPP4/4PPPP/BQNNRKRB w GE - 1 9
 perft 1 20
 perft 2 479
@@ -27,7 +28,7 @@ perft 4 273318
 perft 5 6417013
 perft 6 177654692
 
-id 1
+id 3
 epd qbbnnrkr/2pp2pp/p7/1p2pp2/8/P3PP2/1PPP1KPP/QBBNNR1R w hf - 0 9
 perft 1 22
 perft 2 593
@@ -36,7 +37,7 @@ perft 4 382958
 perft 5 9183776
 perft 6 274103539
 
-id 1
+id 4
 epd 1nbbnrkr/p1p1ppp1/3p4/1p3P1p/3Pq2P/8/PPP1P1P1/QNBBNRKR w HFhf - 0 9
 perft 1 28
 perft 2 1120
@@ -45,7 +46,7 @@ perft 4 1171749
 perft 5 34030312
 perft 6 1250970898
 
-id 1
+id 5
 epd qnbnr1kr/ppp1b1pp/4p3/3p1p2/8/2NPP3/PPP1BPPP/QNB1R1KR w HEhe - 1 9
 perft 1 29
 perft 2 899
@@ -54,7 +55,7 @@ perft 4 824055
 perft 5 24851983
 perft 6 775718317
 
-id 1
+id 6
 epd q1bnrkr1/ppppp2p/2n2p2/4b1p1/2NP4/8/PPP1PPPP/QNB1RRKB w ge - 1 9
 perft 1 30
 perft 2 860
@@ -63,7 +64,7 @@ perft 4 732757
 perft 5 21093346
 perft 6 649209803
 
-id 1
+id 7
 epd qbn1brkr/ppp1p1p1/2n4p/3p1p2/P7/6PP/QPPPPP2/1BNNBRKR w HFhf - 0 9
 perft 1 25
 perft 2 635
@@ -72,7 +73,7 @@ perft 4 465806
 perft 5 13203304
 perft 6 377184252
 
-id 1
+id 8
 epd qnnbbrkr/1p2ppp1/2pp3p/p7/1P5P/2NP4/P1P1PPP1/Q1NBBRKR w HFhf - 0 9
 perft 1 24
 perft 2 572
@@ -81,7 +82,7 @@ perft 4 384260
 perft 5 11110203
 perft 6 293989890
 
-id 1
+id 9
 epd qn1rbbkr/ppp2p1p/1n1pp1p1/8/3P4/P6P/1PP1PPPK/QNNRBB1R w hd - 2 9
 perft 1 28
 perft 2 811
@@ -90,7 +91,7 @@ perft 4 679699
 perft 5 19836606
 perft 6 594527992
 
-id 1
+id 10
 epd qnr1bkrb/pppp2pp/3np3/5p2/8/P2P2P1/NPP1PP1P/QN1RBKRB w GDg - 3 9
 perft 1 33
 perft 2 823
@@ -99,7 +100,7 @@ perft 4 713420
 perft 5 23114629
 perft 6 646390782
 
-id 1
+id 11
 epd qb1nrkbr/1pppp1p1/1n3p2/p1B4p/8/3P1P1P/PPP1P1P1/QBNNRK1R w HEhe - 0 9
 perft 1 31
 perft 2 855
@@ -108,7 +109,7 @@ perft 4 735703
 perft 5 21796206
 perft 6 651054626
 
-id 1
+id 12
 epd qnnbrk1r/1p1ppbpp/2p5/p4p2/2NP3P/8/PPP1PPP1/Q1NBRKBR w HEhe - 0 9
 perft 1 26
 perft 2 790
@@ -117,7 +118,7 @@ perft 4 642367
 perft 5 17819770
 perft 6 544866674
 
-id 1
+id 13
 epd 1qnrkbbr/1pppppp1/p1n4p/8/P7/1P1N1P2/2PPP1PP/QN1RKBBR w HDhd - 0 9
 perft 1 37
 perft 2 883
@@ -126,7 +127,7 @@ perft 4 815535
 perft 5 29370838
 perft 6 783201510
 
-id 1
+id 14
 epd qn1rkrbb/pp1p1ppp/2p1p3/3n4/4P2P/2NP4/PPP2PP1/Q1NRKRBB w FDfd - 1 9
 perft 1 24
 perft 2 585
@@ -135,7 +136,7 @@ perft 4 356950
 perft 5 9482310
 perft 6 233468620
 
-id 1
+id 15
 epd bb1qnrkr/pp1p1pp1/1np1p3/4N2p/8/1P4P1/P1PPPP1P/BBNQ1RKR w HFhf - 0 9
 perft 1 29
 perft 2 864
@@ -144,7 +145,7 @@ perft 4 799727
 perft 5 24219627
 perft 6 776836316
 
-id 1
+id 16
 epd bnqbnr1r/p1p1ppkp/3p4/1p4p1/P7/3NP2P/1PPP1PP1/BNQB1RKR w HF - 0 9
 perft 1 26
 perft 2 889
@@ -153,7 +154,7 @@ perft 4 832956
 perft 5 23701014
 perft 6 809194268
 
-id 1
+id 17
 epd bnqnrbkr/1pp2pp1/p7/3pP2p/4P1P1/8/PPPP3P/BNQNRBKR w HEhe d6 0 9
 perft 1 31
 perft 2 984
@@ -162,7 +163,7 @@ perft 4 962591
 perft 5 29032175
 perft 6 1008880643
 
-id 1
+id 18
 epd b1qnrrkb/ppp1pp1p/n2p1Pp1/8/8/P7/1PPPP1PP/BNQNRKRB w GE - 0 9
 perft 1 20
 perft 2 484
@@ -171,7 +172,7 @@ perft 4 281606
 perft 5 6718715
 perft 6 193594729
 
-id 1
+id 19
 epd n1bqnrkr/pp1ppp1p/2p5/6p1/2P2b2/PN6/1PNPPPPP/1BBQ1RKR w HFhf - 2 9
 perft 1 23
 perft 2 732
@@ -180,7 +181,7 @@ perft 4 558191
 perft 5 14481581
 perft 6 457140569
 
-id 1
+id 20
 epd n1bb1rkr/qpnppppp/2p5/p7/P1P5/5P2/1P1PPRPP/NQBBN1KR w Hhf - 1 9
 perft 1 27
 perft 2 697
@@ -189,7 +190,7 @@ perft 4 505089
 perft 5 14226907
 perft 6 400942568
 
-id 1
+id 21
 epd nqb1rbkr/pppppp1p/4n3/6p1/4P3/1NP4P/PP1P1PP1/1QBNRBKR w HEhe - 1 9
 perft 1 28
 perft 2 641
@@ -198,7 +199,7 @@ perft 4 456916
 perft 5 13780398
 perft 6 354122358
 
-id 1
+id 22
 epd n1bnrrkb/pp1pp2p/2p2p2/6p1/5B2/3P4/PPP1PPPP/NQ1NRKRB w GE - 2 9
 perft 1 28
 perft 2 606
@@ -207,7 +208,7 @@ perft 4 381646
 perft 5 10815324
 perft 6 254026570
 
-id 1
+id 23
 epd nbqnbrkr/2ppp1p1/pp3p1p/8/4N2P/1N6/PPPPPPP1/1BQ1BRKR w HFhf - 0 9
 perft 1 26
 perft 2 626
@@ -216,7 +217,7 @@ perft 4 437525
 perft 5 12719546
 perft 6 339132046
 
-id 1
+id 24
 epd nq1bbrkr/pp2nppp/2pp4/4p3/1PP1P3/1B6/P2P1PPP/NQN1BRKR w HFhf - 2 9
 perft 1 21
 perft 2 504
@@ -225,7 +226,7 @@ perft 4 302230
 perft 5 7697880
 perft 6 207028745
 
-id 1
+id 25
 epd nqnrb1kr/2pp1ppp/1p1bp3/p1B5/5P2/3N4/PPPPP1PP/NQ1R1BKR w HDhd - 0 9
 perft 1 30
 perft 2 672
@@ -234,7 +235,7 @@ perft 4 465317
 perft 5 13454573
 perft 6 345445468
 
-id 1
+id 26
 epd nqn2krb/p1prpppp/1pbp4/7P/5P2/8/PPPPPKP1/NQNRB1RB w g - 3 9
 perft 1 21
 perft 2 461
@@ -243,7 +244,7 @@ perft 4 248069
 perft 5 6194124
 perft 6 152861936
 
-id 1
+id 27
 epd nb1n1kbr/ppp1rppp/3pq3/P3p3/8/4P3/1PPPRPPP/NBQN1KBR w Hh - 1 9
 perft 1 19
 perft 2 566
@@ -252,7 +253,7 @@ perft 4 358337
 perft 5 8047916
 perft 6 249171636
 
-id 1
+id 28
 epd nqnbrkbr/1ppppp1p/p7/6p1/6P1/P6P/1PPPPP2/NQNBRKBR w HEhe - 1 9
 perft 1 20
 perft 2 382
@@ -261,7 +262,7 @@ perft 4 187263
 perft 5 4708975
 perft 6 112278808
 
-id 1
+id 29
 epd nq1rkb1r/pp1pp1pp/1n2bp1B/2p5/8/5P1P/PPPPP1P1/NQNRKB1R w HDhd - 2 9
 perft 1 24
 perft 2 809
@@ -270,7 +271,7 @@ perft 4 673811
 perft 5 17647882
 perft 6 593457788
 
-id 1
+id 30
 epd nqnrkrb1/pppppp2/7p/4b1p1/8/PN1NP3/1PPP1PPP/1Q1RKRBB w FDfd - 1 9
 perft 1 26
 perft 2 683
@@ -279,7 +280,7 @@ perft 4 473911
 perft 5 13055173
 perft 6 352398011
 
-id 1
+id 31
 epd bb1nqrkr/1pp1ppp1/pn5p/3p4/8/P2NNP2/1PPPP1PP/BB2QRKR w HFhf - 0 9
 perft 1 29
 perft 2 695
@@ -288,7 +289,7 @@ perft 4 552634
 perft 5 17454857
 perft 6 483785639
 
-id 1
+id 32
 epd bnn1qrkr/pp1ppp1p/2p5/b3Q1p1/8/5P1P/PPPPP1P1/BNNB1RKR w HFhf - 2 9
 perft 1 44
 perft 2 920
@@ -297,7 +298,7 @@ perft 4 795317
 perft 5 29742670
 perft 6 702867204
 
-id 1
+id 33
 epd bnnqrbkr/pp1p2p1/2p1p2p/5p2/1P5P/1R6/P1PPPPP1/BNNQRBK1 w Ehe - 0 9
 perft 1 33
 perft 2 1022
@@ -306,7 +307,7 @@ perft 4 1024721
 perft 5 32898113
 perft 6 1047360456
 
-id 1
+id 34
 epd b1nqrkrb/2pppppp/p7/1P6/1n6/P4P2/1P1PP1PP/BNNQRKRB w GEge - 0 9
 perft 1 23
 perft 2 638
@@ -315,7 +316,7 @@ perft 4 446539
 perft 5 11735969
 perft 6 344211589
 
-id 1
+id 35
 epd n1bnqrkr/3ppppp/1p6/pNp1b3/2P3P1/8/PP1PPP1P/NBB1QRKR w HFhf - 1 9
 perft 1 29
 perft 2 728
@@ -324,7 +325,7 @@ perft 4 532084
 perft 5 15621236
 perft 6 415766465
 
-id 1
+id 36
 epd n2bqrkr/p1p1pppp/1pn5/3p1b2/P6P/1NP5/1P1PPPP1/1NBBQRKR w HFhf - 3 9
 perft 1 20
 perft 2 533
@@ -333,7 +334,7 @@ perft 4 325059
 perft 5 8088751
 perft 6 223068417
 
-id 1
+id 37
 epd nnbqrbkr/1pp1p1p1/p2p4/5p1p/2P1P3/N7/PPQP1PPP/N1B1RBKR w HEhe - 0 9
 perft 1 27
 perft 2 619
@@ -342,7 +343,7 @@ perft 4 444421
 perft 5 13755384
 perft 6 357222394
 
-id 1
+id 38
 epd nnbqrkr1/pp1pp2p/2p2b2/5pp1/1P5P/4P1P1/P1PP1P2/NNBQRKRB w GEge - 1 9
 perft 1 32
 perft 2 1046
@@ -351,7 +352,7 @@ perft 4 1111186
 perft 5 36218182
 perft 6 1202830851
 
-id 1
+id 39
 epd nb1qbrkr/p1pppp2/1p1n2pp/8/1P6/2PN3P/P2PPPP1/NB1QBRKR w HFhf - 0 9
 perft 1 25
 perft 2 521
@@ -360,7 +361,7 @@ perft 4 306427
 perft 5 8697700
 perft 6 201455191
 
-id 1
+id 40
 epd nnq1brkr/pp1pppp1/8/2p4P/8/5K2/PPPbPP1P/NNQBBR1R w hf - 0 9
 perft 1 23
 perft 2 724
@@ -369,7 +370,7 @@ perft 4 571072
 perft 5 15338230
 perft 6 484638597
 
-id 1
+id 41
 epd nnqrbb1r/pppppk2/5pp1/7p/1P6/3P2PP/P1P1PP2/NNQRBBKR w HD - 0 9
 perft 1 30
 perft 2 717
@@ -378,7 +379,7 @@ perft 4 547145
 perft 5 17166700
 perft 6 450069742
 
-id 1
+id 42
 epd nnqr1krb/p1p1pppp/2bp4/8/1p1P4/4P3/PPP2PPP/NNQRBKRB w GDgd - 0 9
 perft 1 25
 perft 2 873
@@ -387,7 +388,7 @@ perft 4 728628
 perft 5 18162741
 perft 6 641708630
 
-id 1
+id 43
 epd nbnqrkbr/p2ppp2/1p4p1/2p4p/3P3P/3N4/PPP1PPPR/NB1QRKB1 w Ehe - 0 9
 perft 1 24
 perft 2 589
@@ -396,7 +397,7 @@ perft 4 382317
 perft 5 10630667
 perft 6 279474189
 
-id 1
+id 44
 epd n1qbrkbr/p1ppp2p/2n2pp1/1p6/1P6/2P3P1/P2PPP1P/NNQBRKBR w HEhe - 0 9
 perft 1 22
 perft 2 592
@@ -405,7 +406,7 @@ perft 4 401976
 perft 5 10356818
 perft 6 301583306
 
-id 1
+id 45
 epd 2qrkbbr/ppn1pppp/n1p5/3p4/5P2/P1PP4/1P2P1PP/NNQRKBBR w HDhd - 1 9
 perft 1 27
 perft 2 750
@@ -414,7 +415,7 @@ perft 4 605458
 perft 5 16819085
 perft 6 516796736
 
-id 1
+id 46
 epd 1nqr1rbb/pppkp1pp/1n3p2/3p4/1P6/5P1P/P1PPPKP1/NNQR1RBB w - - 1 9
 perft 1 24
 perft 2 623
@@ -423,7 +424,7 @@ perft 4 429446
 perft 5 11594634
 perft 6 322745925
 
-id 1
+id 47
 epd bbn1rqkr/pp1pp2p/4npp1/2p5/1P6/2BPP3/P1P2PPP/1BNNRQKR w HEhe - 0 9
 perft 1 23
 perft 2 730
@@ -432,7 +433,7 @@ perft 4 565340
 perft 5 14496370
 perft 6 468608864
 
-id 1
+id 48
 epd bn1brqkr/pppp2p1/3npp2/7p/PPP5/8/3PPPPP/BNNBRQKR w HEhe - 0 9
 perft 1 25
 perft 2 673
@@ -441,7 +442,7 @@ perft 4 513696
 perft 5 14284338
 perft 6 434008567
 
-id 1
+id 49
 epd bn1rqbkr/ppp1ppp1/1n6/2p4p/7P/3P4/PPP1PPP1/BN1RQBKR w HDhd - 0 9
 perft 1 25
 perft 2 776
@@ -450,7 +451,7 @@ perft 4 660217
 perft 5 18486027
 perft 6 616653869
 
-id 1
+id 50
 epd bnnr1krb/ppp2ppp/3p4/3Bp3/q1P3PP/8/PP1PPP2/BNNRQKR1 w GDgd - 0 9
 perft 1 29
 perft 2 1040
@@ -459,7 +460,7 @@ perft 4 1053113
 perft 5 31801525
 perft 6 1075147725
 
-id 1
+id 51
 epd 1bbnrqkr/pp1ppppp/8/2p5/n7/3PNPP1/PPP1P2P/NBB1RQKR w HEhe - 1 9
 perft 1 24
 perft 2 598
@@ -468,7 +469,7 @@ perft 4 409766
 perft 5 11394778
 perft 6 310589129
 
-id 1
+id 52
 epd nnbbrqkr/p2ppp1p/1pp5/8/6p1/N1P5/PPBPPPPP/N1B1RQKR w HEhe - 0 9
 perft 1 26
 perft 2 530
@@ -477,7 +478,7 @@ perft 4 326312
 perft 5 8846766
 perft 6 229270702
 
-id 1
+id 53
 epd nnbrqbkr/2p1p1pp/p4p2/1p1p4/8/NP6/P1PPPPPP/N1BRQBKR w HDhd - 0 9
 perft 1 17
 perft 2 496
@@ -486,7 +487,7 @@ perft 4 303310
 perft 5 7103549
 perft 6 217108001
 
-id 1
+id 54
 epd nnbrqk1b/pp2pprp/2pp2p1/8/3PP1P1/8/PPP2P1P/NNBRQRKB w d - 1 9
 perft 1 33
 perft 2 820
@@ -495,7 +496,7 @@ perft 4 706784
 perft 5 24714401
 perft 6 645835197
 
-id 1
+id 55
 epd 1bnrbqkr/ppnpp1p1/2p2p1p/8/1P6/4PPP1/P1PP3P/NBNRBQKR w HDhd - 0 9
 perft 1 27
 perft 2 705
@@ -504,7 +505,7 @@ perft 4 548680
 perft 5 15964771
 perft 6 464662032
 
-id 1
+id 56
 epd n1rbbqkr/pp1pppp1/7p/P1p5/1n6/2PP4/1P2PPPP/NNRBBQKR w HChc - 0 9
 perft 1 22
 perft 2 631
@@ -513,7 +514,7 @@ perft 4 431801
 perft 5 10911545
 perft 6 320838556
 
-id 1
+id 57
 epd n1rqb1kr/p1pppp1p/1pn4b/3P2p1/P7/1P6/2P1PPPP/NNRQBBKR w HChc - 0 9
 perft 1 24
 perft 2 477
@@ -522,7 +523,7 @@ perft 4 263189
 perft 5 7419372
 perft 6 165945904
 
-id 1
+id 58
 epd nnrqbkrb/pppp1pp1/7p/4p3/6P1/2N2B2/PPPPPP1P/NR1QBKR1 w Ggc - 2 9
 perft 1 29
 perft 2 658
@@ -531,7 +532,7 @@ perft 4 476620
 perft 5 14233587
 perft 6 373744834
 
-id 1
+id 59
 epd n1nrqkbr/ppb2ppp/3pp3/2p5/2P3P1/5P2/PP1PPB1P/NBNRQK1R w HDhd - 1 9
 perft 1 32
 perft 2 801
@@ -540,7 +541,7 @@ perft 4 681428
 perft 5 22318948
 perft 6 619857455
 
-id 1
+id 60
 epd 2rbqkbr/p1pppppp/1nn5/1p6/7P/P4P2/1PPPP1PB/NNRBQK1R w HChc - 2 9
 perft 1 27
 perft 2 647
@@ -549,7 +550,7 @@ perft 4 458057
 perft 5 13189156
 perft 6 354689323
 
-id 1
+id 61
 epd nn1qkbbr/pp2ppp1/2rp4/2p4p/P2P4/1N5P/1PP1PPP1/1NRQKBBR w HCh - 1 9
 perft 1 24
 perft 2 738
@@ -558,7 +559,7 @@ perft 4 586009
 perft 5 16420659
 perft 6 519075930
 
-id 1
+id 62
 epd nnrqk1bb/p1ppp2p/5rp1/1p3p2/1P4P1/5P1P/P1PPP3/NNRQKRBB w FCc - 1 9
 perft 1 25
 perft 2 795
@@ -567,7 +568,7 @@ perft 4 648945
 perft 5 17342527
 perft 6 556144017
 
-id 1
+id 63
 epd bb1nrkqr/ppppn2p/4ppp1/8/1P4P1/4P3/P1PPKP1P/BBNNR1QR w he - 0 9
 perft 1 29
 perft 2 664
@@ -576,7 +577,7 @@ perft 4 498376
 perft 5 15373803
 perft 6 406016364
 
-id 1
+id 64
 epd bnnbrkqr/1p1ppp2/8/p1p3pp/1P6/N4P2/PBPPP1PP/2NBRKQR w HEhe - 0 9
 perft 1 31
 perft 2 770
@@ -585,7 +586,7 @@ perft 4 677212
 perft 5 22562080
 perft 6 662029574
 
-id 1
+id 65
 epd 1nnrkbqr/p1pp1ppp/4p3/1p6/1Pb1P3/6PB/P1PP1P1P/BNNRK1QR w HDhd - 0 9
 perft 1 27
 perft 2 776
@@ -594,7 +595,7 @@ perft 4 641002
 perft 5 19153245
 perft 6 562738257
 
-id 1
+id 66
 epd bnr1kqrb/pppp1pp1/1n5p/4p3/P3P3/3P2P1/1PP2P1P/BNNRKQRB w GDg - 0 9
 perft 1 26
 perft 2 624
@@ -603,7 +604,7 @@ perft 4 435426
 perft 5 11906515
 perft 6 338092952
 
-id 1
+id 67
 epd nbbnrkqr/p1ppp1pp/1p3p2/8/2P5/4P3/PP1P1PPP/NBBNRKQR w HEhe - 1 9
 perft 1 25
 perft 2 624
@@ -612,7 +613,7 @@ perft 4 419635
 perft 5 10817378
 perft 6 311138112
 
-id 1
+id 68
 epd nn1brkqr/pp1bpppp/8/2pp4/P4P2/1PN5/2PPP1PP/N1BBRKQR w HEhe - 1 9
 perft 1 23
 perft 2 659
@@ -621,7 +622,7 @@ perft 4 476567
 perft 5 13242252
 perft 6 373557073
 
-id 1
+id 69
 epd n1brkbqr/ppp1pp1p/6pB/3p4/2Pn4/8/PP2PPPP/NN1RKBQR w HDhd - 0 9
 perft 1 32
 perft 2 1026
@@ -630,7 +631,7 @@ perft 4 978278
 perft 5 29436320
 perft 6 957904151
 
-id 1
+id 70
 epd nnbrkqrb/p2ppp2/Q5pp/1pp5/4PP2/2N5/PPPP2PP/N1BRK1RB w GDgd - 0 9
 perft 1 36
 perft 2 843
@@ -639,7 +640,7 @@ perft 4 715537
 perft 5 24321197
 perft 6 630396940
 
-id 1
+id 71
 epd nbnrbk1r/pppppppq/8/7p/8/1N2QPP1/PPPPP2P/NB1RBK1R w HDhd - 2 9
 perft 1 36
 perft 2 973
@@ -648,7 +649,7 @@ perft 4 1018054
 perft 5 37143354
 perft 6 1124883780
 
-id 1
+id 72
 epd nnrbbkqr/2pppp1p/p7/6p1/1p2P3/4QPP1/PPPP3P/NNRBBK1R w HChc - 0 9
 perft 1 36
 perft 2 649
@@ -657,7 +658,7 @@ perft 4 489526
 perft 5 16836636
 perft 6 416139320
 
-id 1
+id 73
 epd nnrkbbqr/1p2pppp/p2p4/2p5/8/1N2P1P1/PPPP1P1P/1NKRBBQR w hc - 0 9
 perft 1 26
 perft 2 672
@@ -666,7 +667,7 @@ perft 4 477801
 perft 5 13342771
 perft 6 363074681
 
-id 1
+id 74
 epd n1rkbqrb/pp1ppp2/2n3p1/2p4p/P5PP/1P6/2PPPP2/NNRKBQRB w GCgc - 0 9
 perft 1 24
 perft 2 804
@@ -675,7 +676,7 @@ perft 4 684001
 perft 5 18761475
 perft 6 617932151
 
-id 1
+id 75
 epd nbkr1qbr/1pp1pppp/pn1p4/8/3P2P1/5R2/PPP1PP1P/NBN1KQBR w H - 2 9
 perft 1 30
 perft 2 627
@@ -684,7 +685,7 @@ perft 4 423329
 perft 5 12815016
 perft 6 312798696
 
-id 1
+id 76
 epd nnr1kqbr/pp1pp1p1/2p5/b4p1p/P7/1PNP4/2P1PPPP/N1RBKQBR w HChc - 1 9
 perft 1 12
 perft 2 421
@@ -693,7 +694,7 @@ perft 4 227044
 perft 5 4266410
 perft 6 149176979
 
-id 1
+id 77
 epd n1rkqbbr/p1pp1pp1/np2p2p/8/8/N4PP1/PPPPP1BP/N1RKQ1BR w HChc - 0 9
 perft 1 27
 perft 2 670
@@ -702,7 +703,7 @@ perft 4 494690
 perft 5 14708490
 perft 6 397268628
 
-id 1
+id 78
 epd nnr1qrbb/p2kpppp/1p1p4/2p5/6P1/PP1P4/2P1PP1P/NNRKQRBB w FC - 0 9
 perft 1 27
 perft 2 604
@@ -711,7 +712,7 @@ perft 4 409665
 perft 5 11993332
 perft 6 308518181
 
-id 1
+id 79
 epd bbnnrkrq/ppp1pp2/6p1/3p4/7p/7P/PPPPPPP1/BBNNRRKQ w ge - 0 9
 perft 1 20
 perft 2 559
@@ -720,7 +721,7 @@ perft 4 355326
 perft 5 8427161
 perft 6 252274233
 
-id 1
+id 80
 epd bnnbrkr1/ppp2p1p/5q2/3pp1p1/4P3/1N4P1/PPPPRP1P/BN1B1KRQ w Gge - 0 9
 perft 1 26
 perft 2 1036
@@ -729,7 +730,7 @@ perft 4 1028084
 perft 5 28286576
 perft 6 1042120495
 
-id 1
+id 81
 epd bn1rkbrq/1pppppp1/p6p/1n6/3P4/6PP/PPPRPP2/BNN1KBRQ w Ggd - 2 9
 perft 1 29
 perft 2 633
@@ -738,7 +739,7 @@ perft 4 455476
 perft 5 14333034
 perft 6 361900466
 
-id 1
+id 82
 epd b1nrkrqb/1p1npppp/p2p4/2p5/5P2/4P2P/PPPP1RP1/BNNRK1QB w Dfd - 1 9
 perft 1 25
 perft 2 475
@@ -747,7 +748,7 @@ perft 4 270909
 perft 5 7545536
 perft 6 179579818
 
-id 1
+id 83
 epd 1bbnrkrq/ppppppp1/8/7p/1n4P1/1PN5/P1PPPP1P/NBBR1KRQ w Gge - 0 9
 perft 1 30
 perft 2 803
@@ -756,7 +757,7 @@ perft 4 709716
 perft 5 23443854
 perft 6 686365049
 
-id 1
+id 84
 epd nnbbrkrq/2pp1pp1/1p5p/pP2p3/7P/N7/P1PPPPP1/N1BBRKRQ w GEge - 0 9
 perft 1 18
 perft 2 432
@@ -765,7 +766,7 @@ perft 4 242350
 perft 5 6131124
 perft 6 160393505
 
-id 1
+id 85
 epd nnbrkbrq/1pppp1p1/p7/7p/1P2Pp2/BN6/P1PP1PPP/1N1RKBRQ w GDgd - 0 9
 perft 1 27
 perft 2 482
@@ -774,7 +775,7 @@ perft 4 282259
 perft 5 8084701
 perft 6 193484216
 
-id 1
+id 86
 epd n1brkrqb/pppp3p/n3pp2/6p1/3P1P2/N1P5/PP2P1PP/N1BRKRQB w FDfd - 0 9
 perft 1 28
 perft 2 642
@@ -783,7 +784,7 @@ perft 4 471729
 perft 5 14529434
 perft 6 384837696
 
-id 1
+id 87
 epd nbnrbk2/p1pppp1p/1p3qr1/6p1/1B1P4/1N6/PPP1PPPP/1BNR1RKQ w d - 2 9
 perft 1 30
 perft 2 796
@@ -792,7 +793,7 @@ perft 4 687302
 perft 5 20120565
 perft 6 641832725
 
-id 1
+id 88
 epd nnrbbrkq/1pp2ppp/3p4/p3p3/3P1P2/1P2P3/P1P3PP/NNRBBKRQ w GC - 1 9
 perft 1 31
 perft 2 827
@@ -801,7 +802,7 @@ perft 4 663082
 perft 5 19979594
 perft 6 549437308
 
-id 1
+id 89
 epd nnrkbbrq/1pp2p1p/p2pp1p1/2P5/8/8/PP1PPPPP/NNRKBBRQ w Ggc - 0 9
 perft 1 24
 perft 2 762
@@ -810,7 +811,7 @@ perft 4 624598
 perft 5 16838099
 perft 6 555230555
 
-id 1
+id 90
 epd nnr1brqb/1ppkp1pp/8/p2p1p2/1P1P4/N1P5/P3PPPP/N1RKBRQB w FC - 1 9
 perft 1 23
 perft 2 640
@@ -819,7 +820,7 @@ perft 4 444905
 perft 5 11343507
 perft 6 334123513
 
-id 1
+id 91
 epd nbnrkrbq/2ppp2p/p4p2/1P4p1/4PP2/8/1PPP2PP/NBNRKRBQ w FDfd - 0 9
 perft 1 31
 perft 2 826
@@ -828,7 +829,7 @@ perft 4 732175
 perft 5 23555139
 perft 6 686250413
 
-id 1
+id 92
 epd 1nrbkr1q/1pppp1pp/1n6/p4p2/N1b4P/8/PPPPPPPB/N1RBKR1Q w FCfc - 2 9
 perft 1 27
 perft 2 862
@@ -837,7 +838,7 @@ perft 4 755171
 perft 5 22027695
 perft 6 696353497
 
-id 1
+id 93
 epd nnrkrbbq/pppp2pp/8/4pp2/4P3/P7/1PPPBPPP/NNKRR1BQ w c - 0 9
 perft 1 25
 perft 2 792
@@ -846,7 +847,7 @@ perft 4 636041
 perft 5 16473376
 perft 6 532214177
 
-id 1
+id 94
 epd n1rk1qbb/pppprpp1/2n4p/4p3/2PP3P/8/PP2PPP1/NNRKRQBB w ECc - 1 9
 perft 1 25
 perft 2 622
@@ -855,7 +856,7 @@ perft 4 425247
 perft 5 11420973
 perft 6 321855685
 
-id 1
+id 95
 epd bbq1rnkr/pnp1pp1p/1p1p4/6p1/2P5/2Q1P2P/PP1P1PP1/BB1NRNKR w HEhe - 2 9
 perft 1 36
 perft 2 870
@@ -864,7 +865,7 @@ perft 4 811047
 perft 5 28127620
 perft 6 799738334
 
-id 1
+id 96
 epd bq1brnkr/1p1ppp1p/1np5/p5p1/8/1N5P/PPPPPPP1/BQ1BRNKR w HEhe - 0 9
 perft 1 22
 perft 2 588
@@ -873,7 +874,7 @@ perft 4 380068
 perft 5 9359618
 perft 6 273795898
 
-id 1
+id 97
 epd bq1rn1kr/1pppppbp/Nn4p1/8/8/P7/1PPPPPPP/BQ1RNBKR w HDhd - 1 9
 perft 1 24
 perft 2 711
@@ -882,7 +883,7 @@ perft 4 542570
 perft 5 14692779
 perft 6 445827351
 
-id 1
+id 98
 epd bqnr1kr1/pppppp1p/6p1/5n2/4B3/3N2PP/PbPPPP2/BQNR1KR1 w GDgd - 2 9
 perft 1 31
 perft 2 1132
@@ -891,7 +892,7 @@ perft 4 1261476
 perft 5 43256823
 perft 6 1456721391
 
-id 1
+id 99
 epd qbb1rnkr/ppp3pp/4n3/3ppp2/1P3PP1/8/P1PPPN1P/QBB1RNKR w HEhe - 0 9
 perft 1 28
 perft 2 696
@@ -900,7 +901,7 @@ perft 4 541886
 perft 5 16492398
 perft 6 456983120
 
-id 1
+id 100
 epd qnbbr1kr/pp1ppp1p/4n3/6p1/2p3P1/2PP1P2/PP2P2P/QNBBRNKR w HEhe - 0 9
 perft 1 25
 perft 2 655
@@ -909,7 +910,7 @@ perft 4 450189
 perft 5 11767038
 perft 6 335414976
 
-id 1
+id 101
 epd 1nbrnbkr/p1ppp1pp/1p6/5p2/4q1PP/3P4/PPP1PP2/QNBRNBKR w HDhd - 1 9
 perft 1 30
 perft 2 1162
@@ -918,7 +919,7 @@ perft 4 1217278
 perft 5 36048727
 perft 6 1290346802
 
-id 1
+id 102
 epd q1brnkrb/p1pppppp/n7/1p6/P7/3P1P2/QPP1P1PP/1NBRNKRB w GDgd - 0 9
 perft 1 32
 perft 2 827
@@ -927,7 +928,7 @@ perft 4 718243
 perft 5 23143989
 perft 6 673147648
 
-id 1
+id 103
 epd qbnrb1kr/ppp1pp1p/3p4/2n3p1/1P6/6N1/P1PPPPPP/QBNRB1KR w HDhd - 2 9
 perft 1 29
 perft 2 751
@@ -936,7 +937,7 @@ perft 4 610397
 perft 5 19555214
 perft 6 530475036
 
-id 1
+id 104
 epd q1rbbnkr/pppp1p2/2n3pp/2P1p3/3P4/8/PP1NPPPP/Q1RBBNKR w HChc - 2 9
 perft 1 29
 perft 2 806
@@ -945,7 +946,7 @@ perft 4 687251
 perft 5 21694330
 perft 6 619907316
 
-id 1
+id 105
 epd q1r1bbkr/pnpp1ppp/2n1p3/1p6/2P2P2/2N1N3/PP1PP1PP/Q1R1BBKR w HChc - 2 9
 perft 1 32
 perft 2 1017
@@ -954,7 +955,7 @@ perft 4 986028
 perft 5 31204371
 perft 6 958455898
 
-id 1
+id 106
 epd 2rnbkrb/pqppppp1/1pn5/7p/2P5/P1R5/QP1PPPPP/1N1NBKRB w Ggc - 4 9
 perft 1 26
 perft 2 625
@@ -963,7 +964,7 @@ perft 4 434635
 perft 5 11856964
 perft 6 336672890
 
-id 1
+id 107
 epd qbnr1kbr/p2ppppp/2p5/1p6/4n2P/P4N2/1PPP1PP1/QBNR1KBR w HDhd - 0 9
 perft 1 27
 perft 2 885
@@ -972,7 +973,7 @@ perft 4 767273
 perft 5 21855658
 perft 6 706272554
 
-id 1
+id 108
 epd qnrbnk1r/pp1pp2p/5p2/2pbP1p1/3P4/1P6/P1P2PPP/QNRBNKBR w HChc - 0 9
 perft 1 26
 perft 2 954
@@ -981,7 +982,7 @@ perft 4 892456
 perft 5 24415089
 perft 6 866744329
 
-id 1
+id 109
 epd qnrnk1br/p1p2ppp/8/1pbpp3/8/PP2N3/1QPPPPPP/1NR1KBBR w HChc - 0 9
 perft 1 26
 perft 2 783
@@ -990,7 +991,7 @@ perft 4 634267
 perft 5 17477825
 perft 6 539674275
 
-id 1
+id 110
 epd qnrnkrbb/Bpppp2p/6p1/5p2/5P2/3PP3/PPP3PP/QNRNKR1B w FCfc - 1 9
 perft 1 28
 perft 2 908
@@ -999,7 +1000,7 @@ perft 4 861240
 perft 5 25251641
 perft 6 869525254
 
-id 1
+id 111
 epd bbnqrn1r/ppppp2k/5p2/6pp/7P/1QP5/PP1PPPP1/B1N1RNKR w HE - 0 9
 perft 1 33
 perft 2 643
@@ -1008,7 +1009,7 @@ perft 4 487109
 perft 5 16693640
 perft 6 410115900
 
-id 1
+id 112
 epd b1qbrnkr/ppp1pp2/2np4/6pp/4P3/2N4P/PPPP1PP1/BQ1BRNKR w HEhe - 0 9
 perft 1 28
 perft 2 837
@@ -1017,7 +1018,7 @@ perft 4 745617
 perft 5 22197063
 perft 6 696399065
 
-id 1
+id 113
 epd bnqr1bkr/pp1ppppp/2p5/4N3/5P2/P7/1PPPPnPP/BNQR1BKR w HDhd - 3 9
 perft 1 25
 perft 2 579
@@ -1026,7 +1027,7 @@ perft 4 341444
 perft 5 8601011
 perft 6 225530258
 
-id 1
+id 114
 epd b1qr1krb/pp1ppppp/n2n4/8/2p5/2P3P1/PP1PPP1P/BNQRNKRB w GDgd - 0 9
 perft 1 28
 perft 2 707
@@ -1035,7 +1036,7 @@ perft 4 549506
 perft 5 15583376
 perft 6 468399900
 
-id 1
+id 115
 epd nbbqr1kr/1pppp1pp/8/p1n2p2/4P3/PN6/1PPPQPPP/1BB1RNKR w HEhe - 0 9
 perft 1 30
 perft 2 745
@@ -1044,7 +1045,7 @@ perft 4 597858
 perft 5 19478789
 perft 6 515473678
 
-id 1
+id 116
 epd nqbbrn1r/p1pppp1k/1p4p1/7p/4P3/1R3B2/PPPP1PPP/NQB2NKR w H - 0 9
 perft 1 24
 perft 2 504
@@ -1053,7 +1054,7 @@ perft 4 317355
 perft 5 9002073
 perft 6 228726497
 
-id 1
+id 117
 epd nqbr1bkr/p1p1ppp1/1p1n4/3pN2p/1P6/8/P1PPPPPP/NQBR1BKR w HDhd - 0 9
 perft 1 29
 perft 2 898
@@ -1062,7 +1063,7 @@ perft 4 809605
 perft 5 24703467
 perft 6 757166494
 
-id 1
+id 118
 epd nqbrn1rb/pppp1kp1/5p1p/4p3/P4B2/3P2P1/1PP1PP1P/NQ1RNKRB w GD - 0 9
 perft 1 34
 perft 2 671
@@ -1071,7 +1072,7 @@ perft 4 473110
 perft 5 15556806
 perft 6 353235120
 
-id 1
+id 119
 epd nb1r1nkr/ppp1ppp1/2bp4/7p/3P2qP/P6R/1PP1PPP1/NBQRBNK1 w Dhd - 1 9
 perft 1 38
 perft 2 1691
@@ -1080,7 +1081,7 @@ perft 4 2526992
 perft 5 88557078
 perft 6 3589649998
 
-id 1
+id 120
 epd n1rbbnkr/1p1pp1pp/p7/2p1qp2/1B3P2/3P4/PPP1P1PP/NQRB1NKR w HChc - 0 9
 perft 1 24
 perft 2 913
@@ -1089,7 +1090,7 @@ perft 4 807544
 perft 5 19866918
 perft 6 737239330
 
-id 1
+id 121
 epd nqrnbbkr/p2p1p1p/1pp5/1B2p1p1/1P3P2/4P3/P1PP2PP/NQRNB1KR w HChc - 0 9
 perft 1 33
 perft 2 913
@@ -1098,7 +1099,7 @@ perft 4 843874
 perft 5 28053260
 perft 6 804687975
 
-id 1
+id 122
 epd nqr1bkrb/ppp1pp2/2np2p1/P6p/8/2P4P/1P1PPPP1/NQRNBKRB w GCgc - 0 9
 perft 1 24
 perft 2 623
@@ -1107,7 +1108,7 @@ perft 4 442531
 perft 5 12681936
 perft 6 351623879
 
-id 1
+id 123
 epd nb1rnkbr/pqppppp1/1p5p/8/1PP4P/8/P2PPPP1/NBQRNKBR w HDhd - 1 9
 perft 1 31
 perft 2 798
@@ -1116,7 +1117,7 @@ perft 4 694386
 perft 5 22616076
 perft 6 666227466
 
-id 1
+id 124
 epd nqrbnkbr/2p1p1pp/3p4/pp3p2/6PP/3P1N2/PPP1PP2/NQRB1KBR w HChc - 0 9
 perft 1 24
 perft 2 590
@@ -1125,7 +1126,7 @@ perft 4 383690
 perft 5 9698432
 perft 6 274064911
 
-id 1
+id 125
 epd nqrnkbbr/pp1p1p1p/4p1p1/1p6/8/5P1P/P1PPP1P1/NQRNKBBR w HChc - 0 9
 perft 1 30
 perft 2 1032
@@ -1134,7 +1135,7 @@ perft 4 1098116
 perft 5 34914919
 perft 6 1233362066
 
-id 1
+id 126
 epd nqrnkrbb/p2ppppp/1p6/2p5/2P3P1/5P2/PP1PPN1P/NQR1KRBB w FCfc - 1 9
 perft 1 30
 perft 2 775
@@ -1143,7 +1144,7 @@ perft 4 668000
 perft 5 21141738
 perft 6 621142773
 
-id 1
+id 127
 epd bbnrqrk1/pp2pppp/4n3/2pp4/P7/1N5P/BPPPPPP1/B2RQNKR w HD - 2 9
 perft 1 23
 perft 2 708
@@ -1152,7 +1153,7 @@ perft 4 554089
 perft 5 14343443
 perft 6 481405144
 
-id 1
+id 128
 epd bnr1qnkr/p1pp1p1p/1p4p1/4p1b1/2P1P3/1P6/PB1P1PPP/1NRBQNKR w HChc - 1 9
 perft 1 30
 perft 2 931
@@ -1161,7 +1162,7 @@ perft 4 921746
 perft 5 30026687
 perft 6 968109774
 
-id 1
+id 129
 epd b1rqnbkr/ppp1ppp1/3p3p/2n5/P3P3/2NP4/1PP2PPP/B1RQNBKR w HChc - 0 9
 perft 1 24
 perft 2 596
@@ -1170,7 +1171,7 @@ perft 4 396123
 perft 5 11099382
 perft 6 294180723
 
-id 1
+id 130
 epd bnrqnr1b/pp1pkppp/2p1p3/P7/2P5/7P/1P1PPPP1/BNRQNKRB w GC - 0 9
 perft 1 24
 perft 2 572
@@ -1179,7 +1180,7 @@ perft 4 390903
 perft 5 11208688
 perft 6 302955778
 
-id 1
+id 131
 epd n1brq1kr/bppppppp/p7/8/4P1Pn/8/PPPP1P2/NBBRQNKR w HDhd - 0 9
 perft 1 20
 perft 2 570
@@ -1188,7 +1189,7 @@ perft 4 371247
 perft 5 9919113
 perft 6 284592289
 
-id 1
+id 132
 epd 1rbbqnkr/ppn1ppp1/3p3p/2p5/3P4/1N4P1/PPPBPP1P/1R1BQNKR w HBhb - 0 9
 perft 1 29
 perft 2 1009
@@ -1197,7 +1198,7 @@ perft 4 1040816
 perft 5 31059587
 perft 6 1111986835
 
-id 1
+id 133
 epd nrbq2kr/ppppppb1/5n1p/5Pp1/8/P5P1/1PPPP2P/NRBQNBKR w HBhb - 1 9
 perft 1 20
 perft 2 520
@@ -1206,7 +1207,7 @@ perft 4 316332
 perft 5 7809837
 perft 6 216997152
 
-id 1
+id 134
 epd nrb1nkrb/pp3ppp/1qBpp3/2p5/8/P5P1/1PPPPP1P/NRBQNKR1 w GBgb - 2 9
 perft 1 32
 perft 2 850
@@ -1215,7 +1216,7 @@ perft 4 734088
 perft 5 21981567
 perft 6 664886187
 
-id 1
+id 135
 epd 1br1bnkr/ppqppp1p/1np3p1/8/1PP4P/4N3/P2PPPP1/NBRQB1KR w HChc - 1 9
 perft 1 32
 perft 2 798
@@ -1224,7 +1225,7 @@ perft 4 691488
 perft 5 22076141
 perft 6 670296871
 
-id 1
+id 136
 epd nrqbb1kr/1p1pp1pp/2p3n1/p4p2/3PP3/P5N1/1PP2PPP/NRQBB1KR w HBhb - 0 9
 perft 1 32
 perft 2 791
@@ -1233,7 +1234,7 @@ perft 4 684890
 perft 5 23239122
 perft 6 634260266
 
-id 1
+id 137
 epd nrqn1bkr/ppppp1pp/4b3/8/4P1p1/5P2/PPPP3P/NRQNBBKR w HBhb - 0 9
 perft 1 29
 perft 2 687
@@ -1242,7 +1243,7 @@ perft 4 506088
 perft 5 15236287
 perft 6 398759980
 
-id 1
+id 138
 epd nrqnbrkb/pppp1p2/4p2p/3B2p1/8/1P4P1/PQPPPP1P/NR1NBKR1 w GB - 0 9
 perft 1 37
 perft 2 764
@@ -1251,7 +1252,7 @@ perft 4 610950
 perft 5 21284835
 perft 6 514864869
 
-id 1
+id 139
 epd nbrq1kbr/Bp3ppp/2pnp3/3p4/5P2/2P4P/PP1PP1P1/NBRQNK1R w HChc - 0 9
 perft 1 40
 perft 2 1271
@@ -1260,7 +1261,7 @@ perft 4 1547741
 perft 5 56588117
 perft 6 1850696281
 
-id 1
+id 140
 epd nrqbnkbr/1p2ppp1/p1p4p/3p4/1P6/8/PQPPPPPP/1RNBNKBR w HBhb - 0 9
 perft 1 28
 perft 2 757
@@ -1269,7 +1270,7 @@ perft 4 668025
 perft 5 21427496
 perft 6 650939962
 
-id 1
+id 141
 epd nrqn1bbr/2ppkppp/4p3/pB6/8/2P1P3/PP1P1PPP/NRQNK1BR w HB - 1 9
 perft 1 27
 perft 2 642
@@ -1278,7 +1279,7 @@ perft 4 442653
 perft 5 11872805
 perft 6 327545120
 
-id 1
+id 142
 epd nrqnkrb1/p1ppp2p/1p4p1/4bp2/4PP1P/4N3/PPPP2P1/NRQ1KRBB w FBfb - 1 9
 perft 1 27
 perft 2 958
@@ -1287,7 +1288,7 @@ perft 4 960350
 perft 5 28520172
 perft 6 995356563
 
-id 1
+id 143
 epd 1bnrnqkr/pbpp2pp/8/1p2pp2/P6P/3P1N2/1PP1PPP1/BBNR1QKR w HDhd - 0 9
 perft 1 27
 perft 2 859
@@ -1296,7 +1297,7 @@ perft 4 773232
 perft 5 21581178
 perft 6 732696327
 
-id 1
+id 144
 epd b1rbnqkr/1pp1ppp1/2n4p/p2p4/5P2/1PBP4/P1P1P1PP/1NRBNQKR w HChc - 0 9
 perft 1 26
 perft 2 545
@@ -1305,7 +1306,7 @@ perft 4 336470
 perft 5 9537260
 perft 6 233549184
 
-id 1
+id 145
 epd 1nrnqbkr/p1pppppp/1p6/8/2b2P2/P1N5/1PP1P1PP/BNR1QBKR w HChc - 2 9
 perft 1 24
 perft 2 668
@@ -1314,7 +1315,7 @@ perft 4 494866
 perft 5 14216070
 perft 6 406225409
 
-id 1
+id 146
 epd 1nrnqkrb/2ppp1pp/p7/1p3p2/5P2/N5K1/PPPPP2P/B1RNQ1RB w gc - 0 9
 perft 1 33
 perft 2 725
@@ -1323,7 +1324,7 @@ perft 4 559823
 perft 5 18547476
 perft 6 471443091
 
-id 1
+id 147
 epd nbbr1qkr/p1pppppp/8/1p1n4/3P4/1N3PP1/PPP1P2P/1BBRNQKR w HDhd - 1 9
 perft 1 28
 perft 2 698
@@ -1332,7 +1333,7 @@ perft 4 539625
 perft 5 16555068
 perft 6 458045505
 
-id 1
+id 148
 epd 1rbbnqkr/1pnppp1p/p5p1/2p5/2P4P/5P2/PP1PP1PR/NRBBNQK1 w Bhb - 1 9
 perft 1 24
 perft 2 554
@@ -1341,7 +1342,7 @@ perft 4 362516
 perft 5 9863080
 perft 6 269284081
 
-id 1
+id 149
 epd nrb1qbkr/2pppppp/2n5/p7/2p5/4P3/PPNP1PPP/1RBNQBKR w HBhb - 0 9
 perft 1 23
 perft 2 618
@@ -1350,7 +1351,7 @@ perft 4 443718
 perft 5 12044358
 perft 6 360311412
 
-id 1
+id 150
 epd nrb1qkrb/2ppppp1/p3n3/1p1B3p/2P5/6P1/PP1PPPRP/NRBNQK2 w Bgb - 2 9
 perft 1 27
 perft 2 593
@@ -1359,7 +1360,7 @@ perft 4 401967
 perft 5 11806808
 perft 6 303338935
 
-id 1
+id 151
 epd nbrn1qkr/ppp1pp2/3p2p1/3Q3P/b7/8/PPPPPP1P/NBRNB1KR w HChc - 2 9
 perft 1 39
 perft 2 1056
@@ -1368,7 +1369,7 @@ perft 4 1133446
 perft 5 42201531
 perft 6 1239888683
 
-id 1
+id 152
 epd nr1bbqkr/pp1pp2p/1n3pp1/2p5/8/1P4P1/P1PPPPQP/NRNBBK1R w hb - 0 9
 perft 1 25
 perft 2 585
@@ -1377,7 +1378,7 @@ perft 4 406544
 perft 5 11582539
 perft 6 320997679
 
-id 1
+id 153
 epd nr2bbkr/ppp1pppp/1n1p4/8/6PP/1NP4q/PP1PPP2/1RNQBBKR w HBhb - 1 9
 perft 1 22
 perft 2 742
@@ -1386,7 +1387,7 @@ perft 4 545231
 perft 5 13287051
 perft 6 457010195
 
-id 1
+id 154
 epd 1rnqbkrb/ppp1p1p1/1n3p2/3p3p/P6P/4P3/1PPP1PP1/NRNQBRKB w gb - 0 9
 perft 1 22
 perft 2 574
@@ -1395,7 +1396,7 @@ perft 4 379648
 perft 5 9968830
 perft 6 281344367
 
-id 1
+id 155
 epd nb1rqkbr/1pppp1pp/4n3/p4p2/6PP/5P2/PPPPPN2/NBR1QKBR w HCh - 0 9
 perft 1 25
 perft 2 621
@@ -1404,7 +1405,7 @@ perft 4 462600
 perft 5 13378840
 perft 6 396575613
 
-id 1
+id 156
 epd nrnbqkbr/2pp2pp/4pp2/pp6/8/1P3P2/P1PPPBPP/NRNBQ1KR w hb - 0 9
 perft 1 25
 perft 2 656
@@ -1413,7 +1414,7 @@ perft 4 466493
 perft 5 12525939
 perft 6 358763789
 
-id 1
+id 157
 epd nrnqkbbr/ppppp1p1/7p/5p2/8/P4PP1/NPPPP2P/NR1QKBBR w HBhb - 0 9
 perft 1 28
 perft 2 723
@@ -1422,7 +1423,7 @@ perft 4 547522
 perft 5 15952533
 perft 6 439046803
 
-id 1
+id 158
 epd 1rnqkr1b/ppppp2p/1n3pp1/8/2P3P1/Pb1N4/1P1PPP1P/NR1QKRBB w FBfb - 0 9
 perft 1 26
 perft 2 713
@@ -1431,7 +1432,7 @@ perft 4 548875
 perft 5 15865528
 perft 6 454532806
 
-id 1
+id 159
 epd bbnrnkqr/1pppp1pp/5p2/p7/7P/1P6/PBPPPPPR/1BNRNKQ1 w D - 2 9
 perft 1 26
 perft 2 649
@@ -1440,7 +1441,7 @@ perft 4 502279
 perft 5 14375839
 perft 6 435585252
 
-id 1
+id 160
 epd bnrbk1qr/1ppp1ppp/p2np3/8/P7/2N2P2/1PPPP1PP/B1RBNKQR w HC - 0 9
 perft 1 26
 perft 2 621
@@ -1449,7 +1450,7 @@ perft 4 451452
 perft 5 13514201
 perft 6 364421088
 
-id 1
+id 161
 epd br1nkbqr/ppppppp1/8/n6p/8/N1P2PP1/PP1PP2P/B1RNKBQR w HCh - 1 9
 perft 1 29
 perft 2 664
@@ -1458,7 +1459,7 @@ perft 4 512316
 perft 5 16125924
 perft 6 442508159
 
-id 1
+id 162
 epd bnr1kqrb/pp1pppp1/2n5/2p5/1P4Pp/4N3/P1PPPP1P/BNKR1QRB w gc - 0 9
 perft 1 36
 perft 2 888
@@ -1467,7 +1468,7 @@ perft 4 789863
 perft 5 27792175
 perft 6 719015345
 
-id 1
+id 163
 epd 1bbrnkqr/pp1p1ppp/2p1p3/1n6/5P2/3Q4/PPPPP1PP/NBBRNK1R w HDhd - 2 9
 perft 1 36
 perft 2 891
@@ -1476,7 +1477,7 @@ perft 4 781792
 perft 5 26998966
 perft 6 702903862
 
-id 1
+id 164
 epd nrbbnk1r/pp2pppq/8/2pp3p/3P2P1/1N6/PPP1PP1P/1RBBNKQR w HBhb - 0 9
 perft 1 29
 perft 2 1036
@@ -1485,7 +1486,7 @@ perft 4 1139166
 perft 5 35627310
 perft 6 1310683359
 
-id 1
+id 165
 epd nr1nkbqr/ppp3pp/5p2/3pp3/6b1/3PP3/PPP2PPP/NRBNKBQR w hb - 0 9
 perft 1 18
 perft 2 664
@@ -1494,7 +1495,7 @@ perft 4 483892
 perft 5 10658989
 perft 6 386307449
 
-id 1
+id 166
 epd nrbnk1rb/ppp1pq1p/3p4/5pp1/2P1P3/1N6/PP1PKPPP/1RBN1QRB w gb - 2 9
 perft 1 25
 perft 2 966
@@ -1503,7 +1504,7 @@ perft 4 920345
 perft 5 23957242
 perft 6 913710194
 
-id 1
+id 167
 epd 1brnbkqr/pppppp2/6p1/7p/1Pn5/P1NP4/2P1PPPP/NBR1BKQR w HChc - 0 9
 perft 1 22
 perft 2 627
@@ -1512,7 +1513,7 @@ perft 4 395829
 perft 5 9627826
 perft 6 285900573
 
-id 1
+id 168
 epd nrnbbk1r/p1pppppq/8/7p/1p6/P5PP/1PPPPPQ1/NRNBBK1R w HBhb - 2 9
 perft 1 29
 perft 2 888
@@ -1521,7 +1522,7 @@ perft 4 874270
 perft 5 27229468
 perft 6 930799376
 
-id 1
+id 169
 epd n1nkb1qr/prppppbp/6p1/1p6/2P2P2/P7/1P1PP1PP/NRNKBBQR w HBh - 1 9
 perft 1 29
 perft 2 804
@@ -1530,7 +1531,7 @@ perft 4 688520
 perft 5 21952444
 perft 6 623156747
 
-id 1
+id 170
 epd nr2bqrb/ppkpp1pp/1np5/5p1P/5P2/2P5/PP1PP1P1/NRNKBQRB w GB - 0 9
 perft 1 22
 perft 2 530
@@ -1539,7 +1540,7 @@ perft 4 347657
 perft 5 9244693
 perft 6 264088392
 
-id 1
+id 171
 epd nbr1kqbr/p3pppp/2ppn3/1p4P1/4P3/1P6/P1PP1P1P/NBRNKQBR w HChc - 1 9
 perft 1 23
 perft 2 555
@@ -1548,7 +1549,7 @@ perft 4 350917
 perft 5 9692630
 perft 6 247479180
 
-id 1
+id 172
 epd nr1bkqbr/1p1pp1pp/pnp2p2/8/6P1/P1PP4/1P2PP1P/NRNBKQBR w HBhb - 0 9
 perft 1 22
 perft 2 565
@@ -1557,7 +1558,7 @@ perft 4 365663
 perft 5 9305533
 perft 6 268612479
 
-id 1
+id 173
 epd nr1kqbbr/np2pppp/p1p5/1B1p1P2/8/4P3/PPPP2PP/NRNKQ1BR w HBhb - 0 9
 perft 1 32
 perft 2 730
@@ -1566,7 +1567,7 @@ perft 4 556995
 perft 5 18103280
 perft 6 454569900
 
-id 1
+id 174
 epd nrnk1rbb/p1p2ppp/3pq3/Qp2p3/1P1P4/8/P1P1PPPP/NRN1KRBB w fb - 2 9
 perft 1 28
 perft 2 873
@@ -1575,7 +1576,7 @@ perft 4 791823
 perft 5 23868737
 perft 6 747991356
 
-id 1
+id 175
 epd bbnrnkrq/pp1ppp1p/6p1/2p5/6P1/P5RP/1PPPPP2/BBNRNK1Q w Dgd - 3 9
 perft 1 37
 perft 2 1260
@@ -1584,7 +1585,7 @@ perft 4 1542086
 perft 5 54843403
 perft 6 1898432768
 
-id 1
+id 176
 epd bnrb1rkq/ppnpppp1/3Q4/2p4p/7P/N7/PPPPPPP1/B1RBNKR1 w GC - 2 9
 perft 1 38
 perft 2 878
@@ -1593,7 +1594,7 @@ perft 4 800440
 perft 5 28784300
 perft 6 784569826
 
-id 1
+id 177
 epd bnrnkbrq/p1ppppp1/1p5p/8/P2PP3/5P2/1PP3PP/BNRNKBRQ w GCgc - 1 9
 perft 1 26
 perft 2 617
@@ -1602,7 +1603,7 @@ perft 4 419099
 perft 5 11965544
 perft 6 311309576
 
-id 1
+id 178
 epd bnrnkrqb/pp2p2p/2pp1pp1/8/P7/2PP1P2/1P2P1PP/BNRNKRQB w FCfc - 0 9
 perft 1 26
 perft 2 721
@@ -1611,7 +1612,7 @@ perft 4 560824
 perft 5 15966934
 perft 6 467132503
 
-id 1
+id 179
 epd nbbrnkr1/1pppp1p1/p6q/P4p1p/8/5P2/1PPPP1PP/NBBRNRKQ w gd - 2 9
 perft 1 18
 perft 2 556
@@ -1620,7 +1621,7 @@ perft 4 316634
 perft 5 6629293
 perft 6 202528241
 
-id 1
+id 180
 epd nrb1nkrq/2pp1ppp/p4b2/1p2p3/P4B2/3P4/1PP1PPPP/NR1BNRKQ w gb - 0 9
 perft 1 24
 perft 2 562
@@ -1629,7 +1630,7 @@ perft 4 355433
 perft 5 9227883
 perft 6 247634489
 
-id 1
+id 181
 epd nrbnkbrq/p3p1pp/1p6/2pp1P2/8/3PP3/PPP2P1P/NRBNKBRQ w GBgb - 0 9
 perft 1 31
 perft 2 746
@@ -1638,7 +1639,7 @@ perft 4 608523
 perft 5 21019301
 perft 6 542954168
 
-id 1
+id 182
 epd nrbnkrqb/pppp1p1p/4p1p1/8/7P/2P1P3/PPNP1PP1/1RBNKRQB w FBfb - 0 9
 perft 1 20
 perft 2 459
@@ -1647,7 +1648,7 @@ perft 4 242762
 perft 5 5760165
 perft 6 146614723
 
-id 1
+id 183
 epd nbrn1krq/ppp1p2p/6b1/3p1pp1/8/4N1PP/PPPPPP2/NBR1BRKQ w gc - 1 9
 perft 1 27
 perft 2 835
@@ -1656,7 +1657,7 @@ perft 4 766397
 perft 5 22667987
 perft 6 760795567
 
-id 1
+id 184
 epd nrnbbkrq/p1pp2pp/5p2/1p6/2P1pP1B/1P6/P2PP1PP/NRNB1KRQ w GBgb - 0 9
 perft 1 24
 perft 2 646
@@ -1665,7 +1666,7 @@ perft 4 444472
 perft 5 11489727
 perft 6 324948755
 
-id 1
+id 185
 epd nrn1bbrq/1ppkppp1/p2p3p/8/1P3N2/4P3/P1PP1PPP/NR1KBBRQ w GB - 2 9
 perft 1 32
 perft 2 591
@@ -1674,7 +1675,7 @@ perft 4 381683
 perft 5 12069159
 perft 6 269922838
 
-id 1
+id 186
 epd n1krbrqb/1ppppppp/p7/8/4n3/P4P1P/1PPPPQP1/NRNKBR1B w FB - 2 9
 perft 1 26
 perft 2 639
@@ -1683,7 +1684,7 @@ perft 4 417190
 perft 5 12167153
 perft 6 312633873
 
-id 1
+id 187
 epd n1rnkrbq/1p1ppp1p/8/p1p1b1p1/3PQ1P1/4N3/PPP1PP1P/NBR1KRB1 w FCfc - 0 9
 perft 1 35
 perft 2 1027
@@ -1692,7 +1693,7 @@ perft 4 1040417
 perft 5 35738410
 perft 6 1060661628
 
-id 1
+id 188
 epd nrnbkrbq/2pp1pp1/pp6/4p2p/P7/5PPP/1PPPP3/NRNBKRBQ w FBfb - 0 9
 perft 1 26
 perft 2 628
@@ -1701,7 +1702,7 @@ perft 4 436075
 perft 5 11920087
 perft 6 331498921
 
-id 1
+id 189
 epd 1rnkrbbq/pp1p2pp/1n3p2/1Bp1p3/1P6/1N2P3/P1PP1PPP/1RNKR1BQ w EBeb - 0 9
 perft 1 33
 perft 2 992
@@ -1710,7 +1711,7 @@ perft 4 983481
 perft 5 31703749
 perft 6 980306735
 
-id 1
+id 190
 epd nr1krqbb/p1ppppp1/8/1p5p/1Pn5/5P2/P1PPP1PP/NRNKRQBB w EBeb - 0 9
 perft 1 24
 perft 2 670
@@ -1719,7 +1720,7 @@ perft 4 445492
 perft 5 11371067
 perft 6 325556465
 
-id 1
+id 191
 epd bbq1rkr1/1ppppppp/p1n2n2/8/2P2P2/1P6/PQ1PP1PP/BB1NRKNR w HEe - 3 9
 perft 1 32
 perft 2 794
@@ -1728,7 +1729,7 @@ perft 4 689334
 perft 5 24085223
 perft 6 645633370
 
-id 1
+id 192
 epd b1nbrknr/1qppp1pp/p4p2/1p6/6P1/P2NP3/1PPP1P1P/BQ1BRKNR w HEhe - 1 9
 perft 1 25
 perft 2 663
@@ -1737,7 +1738,7 @@ perft 4 482994
 perft 5 13157826
 perft 6 389603029
 
-id 1
+id 193
 epd bqnrk1nr/pp2ppbp/6p1/2pp4/2P5/5P2/PPQPP1PP/B1NRKBNR w HDhd - 0 9
 perft 1 26
 perft 2 850
@@ -1746,7 +1747,7 @@ perft 4 759768
 perft 5 21341087
 perft 6 719712622
 
-id 1
+id 194
 epd bqnrknrb/1ppp1p1p/p7/6p1/1P2p3/P1PN4/3PPPPP/BQ1RKNRB w GDgd - 0 9
 perft 1 25
 perft 2 721
@@ -1755,7 +1756,7 @@ perft 4 581913
 perft 5 16391601
 perft 6 511725087
 
-id 1
+id 195
 epd q1b1rknr/pp1pppp1/4n2p/2p1b3/1PP5/4P3/PQ1P1PPP/1BBNRKNR w HEhe - 1 9
 perft 1 32
 perft 2 975
@@ -1764,7 +1765,7 @@ perft 4 955493
 perft 5 32649943
 perft 6 962536105
 
-id 1
+id 196
 epd qnbbrknr/1p1ppppp/8/p1p5/5P2/PP1P4/2P1P1PP/QNBBRKNR w HEhe - 0 9
 perft 1 27
 perft 2 573
@@ -1773,7 +1774,7 @@ perft 4 391656
 perft 5 11562434
 perft 6 301166330
 
-id 1
+id 197
 epd q1brkb1r/p1pppppp/np3B2/8/6n1/1P5N/P1PPPPPP/QN1RKB1R w HDhd - 0 9
 perft 1 32
 perft 2 984
@@ -1782,7 +1783,7 @@ perft 4 1007217
 perft 5 32597704
 perft 6 1075429389
 
-id 1
+id 198
 epd qn1rk1rb/p1pppppp/1p2n3/8/2b5/4NPP1/PPPPP1RP/QNBRK2B w Dgd - 4 9
 perft 1 22
 perft 2 802
@@ -1791,7 +1792,7 @@ perft 4 697722
 perft 5 17761431
 perft 6 650603534
 
-id 1
+id 199
 epd qbnrbknr/ppp2p1p/8/3pp1p1/1PP1B3/5N2/P2PPPPP/Q1NRBK1R w HDhd - 0 9
 perft 1 34
 perft 2 943
@@ -1800,7 +1801,7 @@ perft 4 930619
 perft 5 32523099
 perft 6 955802240
 
-id 1
+id 200
 epd qnrbb1nr/pp1p1ppp/2p2k2/4p3/4P3/5PPP/PPPP4/QNRBBKNR w HC - 0 9
 perft 1 20
 perft 2 460
@@ -1809,7 +1810,7 @@ perft 4 241640
 perft 5 5846781
 perft 6 140714047
 
-id 1
+id 201
 epd qnr1bbnr/ppk1p1pp/3p4/2p2p2/8/2P5/PP1PPPPP/QNKRBBNR w - - 1 9
 perft 1 19
 perft 2 572
@@ -1818,7 +1819,7 @@ perft 4 357340
 perft 5 7994547
 perft 6 243724815
 
-id 1
+id 202
 epd qnrkbnrb/1p1p1ppp/2p5/4p3/p7/N1BP4/PPP1PPPP/Q1R1KNRB w gc - 0 9
 perft 1 27
 perft 2 579
@@ -1827,7 +1828,7 @@ perft 4 375168
 perft 5 10845146
 perft 6 268229097
 
-id 1
+id 203
 epd qbnrkn1r/1pppp1p1/p3bp2/2BN3p/8/5P2/PPPPP1PP/QBNRK2R w HDhd - 0 9
 perft 1 40
 perft 2 1027
@@ -1836,7 +1837,7 @@ perft 4 1059229
 perft 5 38511307
 perft 6 1104094381
 
-id 1
+id 204
 epd qnrbknbr/1pp2ppp/4p3/p6N/2p5/8/PPPPPPPP/Q1RBK1BR w HChc - 0 9
 perft 1 22
 perft 2 510
@@ -1845,7 +1846,7 @@ perft 4 300180
 perft 5 7403327
 perft 6 200581103
 
-id 1
+id 205
 epd 1qkrnbbr/p1pppppp/2n5/1p6/8/5NP1/PPPPPP1P/QNRK1BBR w HC - 4 9
 perft 1 24
 perft 2 549
@@ -1854,7 +1855,7 @@ perft 4 352037
 perft 5 9396521
 perft 6 255676649
 
-id 1
+id 206
 epd q1rknr1b/1ppppppb/2n5/p2B3p/8/1PN3P1/P1PPPP1P/Q1RKNRB1 w FCfc - 3 9
 perft 1 31
 perft 2 924
@@ -1863,7 +1864,7 @@ perft 4 861944
 perft 5 27463479
 perft 6 847726572
 
-id 1
+id 207
 epd bbnqrk1r/pp1pppp1/2p4p/8/6n1/1N1P1P2/PPP1P1PP/BBQ1RKNR w HEhe - 4 9
 perft 1 24
 perft 2 804
@@ -1872,7 +1873,7 @@ perft 4 666341
 perft 5 18024195
 perft 6 595947631
 
-id 1
+id 208
 epd bn1brknr/ppp1p1pp/5p2/3p4/6qQ/3P3P/PPP1PPP1/BN1BRKNR w HEhe - 4 9
 perft 1 25
 perft 2 854
@@ -1881,7 +1882,7 @@ perft 4 704173
 perft 5 20290974
 perft 6 600195008
 
-id 1
+id 209
 epd 1nqrkbnr/2pp1ppp/pp2p3/3b4/2P5/N7/PP1PPPPP/B1QRKBNR w HDhd - 0 9
 perft 1 22
 perft 2 651
@@ -1890,7 +1891,7 @@ perft 4 479152
 perft 5 13133439
 perft 6 390886040
 
-id 1
+id 210
 epd bnqrk1rb/1pp1pppp/p2p4/4n3/2PPP3/8/PP3PPP/BNQRKNRB w GDgd - 1 9
 perft 1 30
 perft 2 950
@@ -1899,7 +1900,7 @@ perft 4 889687
 perft 5 27610213
 perft 6 880739164
 
-id 1
+id 211
 epd nbb1rknr/1ppq1ppp/3p4/p3p3/4P3/1N2R3/PPPP1PPP/1BBQ1KNR w Hhe - 2 9
 perft 1 33
 perft 2 988
@@ -1908,7 +1909,7 @@ perft 4 967575
 perft 5 30894863
 perft 6 985384035
 
-id 1
+id 212
 epd nqbbrknr/2ppp2p/pp4p1/5p2/7P/3P1P2/PPPBP1P1/NQ1BRKNR w HEhe - 0 9
 perft 1 27
 perft 2 492
@@ -1917,7 +1918,7 @@ perft 4 276569
 perft 5 7583292
 perft 6 175376176
 
-id 1
+id 213
 epd 1qbrkb1r/pppppppp/8/3n4/4P1n1/PN6/1PPP1P1P/1QBRKBNR w HDhd - 3 9
 perft 1 28
 perft 2 800
@@ -1926,7 +1927,7 @@ perft 4 630374
 perft 5 17313279
 perft 6 507140861
 
-id 1
+id 214
 epd 1qbrknrb/1p1ppppp/1np5/8/p4P1P/4P1N1/PPPP2P1/NQBRK1RB w GDgd - 0 9
 perft 1 21
 perft 2 482
@@ -1935,7 +1936,7 @@ perft 4 267935
 perft 5 6218644
 perft 6 168704845
 
-id 1
+id 215
 epd nbqrbkr1/ppp1pppp/8/3p4/6n1/2P2PPN/PP1PP2P/NBQRBK1R w HDd - 1 9
 perft 1 29
 perft 2 921
@@ -1944,7 +1945,7 @@ perft 4 840262
 perft 5 24138518
 perft 6 806554650
 
-id 1
+id 216
 epd nqrb1knr/1ppbpp1p/p7/3p2p1/2P3P1/5P1P/PP1PP3/NQRBBKNR w HChc - 1 9
 perft 1 31
 perft 2 803
@@ -1953,7 +1954,7 @@ perft 4 665799
 perft 5 21998733
 perft 6 583349773
 
-id 1
+id 217
 epd 1qrkbbr1/pppp1ppp/1n3n2/4p3/5P2/1N6/PPPPP1PP/1QRKBBNR w HCc - 0 9
 perft 1 25
 perft 2 715
@@ -1962,7 +1963,7 @@ perft 4 556325
 perft 5 15514933
 perft 6 459533767
 
-id 1
+id 218
 epd nqrkb1rb/pp2pppp/2p1n3/3p4/3PP1N1/8/PPP2PPP/NQRKB1RB w GCgc - 0 9
 perft 1 26
 perft 2 795
@@ -1971,7 +1972,7 @@ perft 4 679387
 perft 5 19185851
 perft 6 616508881
 
-id 1
+id 219
 epd nb1rknbr/pp2ppp1/8/2Bp3p/6P1/2P2P1q/PP1PP2P/NBQRKN1R w HDhd - 0 9
 perft 1 35
 perft 2 1391
@@ -1980,7 +1981,7 @@ perft 4 1726888
 perft 5 53033675
 perft 6 2139267832
 
-id 1
+id 220
 epd nqrbkn1r/pp1pp1pp/8/2p2p2/5P2/P3B2P/1PbPP1P1/NQRBKN1R w HChc - 0 9
 perft 1 23
 perft 2 758
@@ -1989,7 +1990,7 @@ perft 4 653854
 perft 5 18296195
 perft 6 628403401
 
-id 1
+id 221
 epd nqrknbbr/pp1pppp1/7p/2p5/7P/1P1N4/P1PPPPPB/NQRK1B1R w HChc - 2 9
 perft 1 29
 perft 2 824
@@ -1998,7 +1999,7 @@ perft 4 683686
 perft 5 19429491
 perft 6 595493802
 
-id 1
+id 222
 epd 1qrknrbb/B1p1pppp/8/1p1p4/2n2P2/1P6/P1PPP1PP/NQRKNR1B w FCfc - 0 9
 perft 1 28
 perft 2 771
@@ -2007,7 +2008,7 @@ perft 4 581721
 perft 5 16065378
 perft 6 483037840
 
-id 1
+id 223
 epd bbnrqk1r/1ppppppp/8/7n/1p6/P6P/1BPPPPP1/1BNRQKNR w HDhd - 0 9
 perft 1 25
 perft 2 601
@@ -2016,7 +2017,7 @@ perft 4 396661
 perft 5 10697065
 perft 6 289472497
 
-id 1
+id 224
 epd bnrbqknr/ppp3p1/3ppp1Q/7p/3P4/1P6/P1P1PPPP/BNRB1KNR w HChc - 0 9
 perft 1 32
 perft 2 845
@@ -2025,7 +2026,7 @@ perft 4 742888
 perft 5 23717883
 perft 6 682154649
 
-id 1
+id 225
 epd bn1qkb1r/pprppppp/8/2p5/2PPP1n1/8/PPR2PPP/BN1QKBNR w Hh - 1 9
 perft 1 32
 perft 2 856
@@ -2034,7 +2035,7 @@ perft 4 768595
 perft 5 25245957
 perft 6 727424329
 
-id 1
+id 226
 epd 1nrqknrb/p1pp1ppp/1p2p3/3N4/5P1P/5b2/PPPPP3/B1RQKNRB w GCgc - 2 9
 perft 1 33
 perft 2 873
@@ -2043,7 +2044,7 @@ perft 4 779473
 perft 5 25128076
 perft 6 745401024
 
-id 1
+id 227
 epd nbbrqrk1/pppppppp/8/2N1n3/P7/6P1/1PPPPP1P/1BBRQKNR w HD - 3 9
 perft 1 25
 perft 2 555
@@ -2052,7 +2053,7 @@ perft 4 342296
 perft 5 9153089
 perft 6 234841945
 
-id 1
+id 228
 epd 1rbbqknr/1ppp1pp1/1n2p3/p6p/4P1P1/P6N/1PPP1P1P/NRBBQK1R w HBhb - 0 9
 perft 1 25
 perft 2 693
@@ -2061,7 +2062,7 @@ perft 4 528070
 perft 5 15133381
 perft 6 439344945
 
-id 1
+id 229
 epd nrq1kbnr/p1pbpppp/3p4/1p6/6P1/1N3N2/PPPPPP1P/1RBQKB1R w HBhb - 4 9
 perft 1 24
 perft 2 648
@@ -2070,7 +2071,7 @@ perft 4 471192
 perft 5 12871967
 perft 6 380436777
 
-id 1
+id 230
 epd nr1qknr1/p1pppp1p/b5p1/1p6/8/P4PP1/1bPPP1RP/NRBQKN1B w Bgb - 0 9
 perft 1 18
 perft 2 533
@@ -2079,7 +2080,7 @@ perft 4 331243
 perft 5 7777833
 perft 6 234905172
 
-id 1
+id 231
 epd nbrqbknr/1ppp2pp/8/4pp2/p2PP1P1/7N/PPP2P1P/NBRQBK1R w HChc - 0 9
 perft 1 29
 perft 2 803
@@ -2088,7 +2089,7 @@ perft 4 706648
 perft 5 22305910
 perft 6 672322762
 
-id 1
+id 232
 epd nr1b1k1r/ppp1pppp/2bp1n2/6P1/2P3q1/5P2/PP1PP2P/NRQBBKNR w HBhb - 1 9
 perft 1 27
 perft 2 1199
@@ -2097,7 +2098,7 @@ perft 4 1296241
 perft 5 35121759
 perft 6 1418677099
 
-id 1
+id 233
 epd nrqkbbnr/2pppp1p/p7/1p6/2P1Pp2/8/PPNP2PP/1RQKBBNR w HBhb - 0 9
 perft 1 28
 perft 2 613
@@ -2106,7 +2107,7 @@ perft 4 432750
 perft 5 13097064
 perft 6 345294379
 
-id 1
+id 234
 epd 1rqkbnrb/pp1ppp1p/1n4p1/B1p5/3PP3/4N3/PPP2PPP/NRQK2RB w GBgb - 0 9
 perft 1 33
 perft 2 723
@@ -2115,7 +2116,7 @@ perft 4 590970
 perft 5 19715083
 perft 6 535650233
 
-id 1
+id 235
 epd nbrqkn1r/1pppp2p/5pp1/p2b4/5P2/P2PN3/1PP1P1PP/NBRQK1BR w HChc - 2 9
 perft 1 23
 perft 2 607
@@ -2124,7 +2125,7 @@ perft 4 400970
 perft 5 11026383
 perft 6 290708878
 
-id 1
+id 236
 epd nrqbknbr/pp1pppp1/8/2p4p/P3PP2/8/1PPP2PP/NRQBKNBR w HBhb - 1 9
 perft 1 26
 perft 2 700
@@ -2133,7 +2134,7 @@ perft 4 556026
 perft 5 16058815
 perft 6 485460242
 
-id 1
+id 237
 epd nrqknbbr/p2pppp1/1pp5/6Qp/3P4/1P3P2/P1P1P1PP/NR1KNBBR w HBhb - 0 9
 perft 1 40
 perft 2 905
@@ -2142,7 +2143,7 @@ perft 4 829746
 perft 5 29263502
 perft 6 791963709
 
-id 1
+id 238
 epd nrqknrbb/1p3ppp/p2p4/2p1p3/1P6/3PP1P1/P1P2P1P/NRQKNRBB w FBfb - 0 9
 perft 1 29
 perft 2 780
@@ -2151,7 +2152,7 @@ perft 4 654495
 perft 5 19532077
 perft 6 593181101
 
-id 1
+id 239
 epd 1bnrkqnr/p1pppp2/7p/1p4p1/4b3/7N/PPPP1PPP/BBNRKQ1R w HDhd - 0 9
 perft 1 25
 perft 2 725
@@ -2160,7 +2161,7 @@ perft 4 565006
 perft 5 16661676
 perft 6 487354613
 
-id 1
+id 240
 epd bnrbkq1r/pp2p1pp/5n2/2pp1p2/P7/N1PP4/1P2PPPP/B1RBKQNR w HChc - 1 9
 perft 1 24
 perft 2 745
@@ -2169,7 +2170,7 @@ perft 4 584015
 perft 5 15079602
 perft 6 488924040
 
-id 1
+id 241
 epd 2rkqbnr/p1pppppp/2b5/1pn5/1P3P1Q/2B5/P1PPP1PP/1NRK1BNR w HChc - 3 9
 perft 1 33
 perft 2 904
@@ -2178,7 +2179,7 @@ perft 4 840025
 perft 5 28194726
 perft 6 801757709
 
-id 1
+id 242
 epd bnrkqnrb/2pppp2/8/pp4pp/1P5P/6P1/P1PPPPB1/BNRKQNR1 w GCgc - 0 9
 perft 1 34
 perft 2 1059
@@ -2187,7 +2188,7 @@ perft 4 1054311
 perft 5 33195397
 perft 6 1036498304
 
-id 1
+id 243
 epd 1bbrkq1r/pppp2pp/1n2pp1n/8/2PP4/1N4P1/PP2PP1P/1BBRKQNR w HDhd - 1 9
 perft 1 33
 perft 2 891
@@ -2196,7 +2197,7 @@ perft 4 814247
 perft 5 26970098
 perft 6 788040469
 
-id 1
+id 244
 epd nrbbkqnr/1p2pp1p/p1p3p1/3p4/8/1PP5/P2PPPPP/NRBBKQNR w HBhb - 0 9
 perft 1 21
 perft 2 567
@@ -2205,7 +2206,7 @@ perft 4 376487
 perft 5 9539687
 perft 6 284426039
 
-id 1
+id 245
 epd 1rbkqbr1/ppp1pppp/1n5n/3p4/3P4/1PP3P1/P3PP1P/NRBKQBNR w HBb - 1 9
 perft 1 27
 perft 2 752
@@ -2214,7 +2215,7 @@ perft 4 606783
 perft 5 16986290
 perft 6 521817800
 
-id 1
+id 246
 epd nrbkq1rb/1ppp1pp1/4p1n1/p6p/2PP4/5P2/PPK1P1PP/NRB1QNRB w gb - 0 9
 perft 1 35
 perft 2 697
@@ -2223,7 +2224,7 @@ perft 4 505836
 perft 5 16906409
 perft 6 390324794
 
-id 1
+id 247
 epd nbrkbqnr/p2pp1p1/5p2/1pp4p/7P/3P2P1/PPP1PP2/NBKRBQNR w hc - 0 9
 perft 1 25
 perft 2 679
@@ -2232,7 +2233,7 @@ perft 4 484921
 perft 5 12879258
 perft 6 376652259
 
-id 1
+id 248
 epd nrkb1qnr/ppppp1p1/6bp/5p2/1PP1P1P1/8/P2P1P1P/NRKBBQNR w HBhb - 1 9
 perft 1 32
 perft 2 761
@@ -2241,7 +2242,7 @@ perft 4 632916
 perft 5 20671433
 perft 6 568524724
 
-id 1
+id 249
 epd nrk1bbnr/p1q1pppp/1ppp4/8/3P3P/4K3/PPP1PPP1/NR1QBBNR w hb - 0 9
 perft 1 30
 perft 2 719
@@ -2250,7 +2251,7 @@ perft 4 541389
 perft 5 16278120
 perft 6 423649784
 
-id 1
+id 250
 epd nrkqbr1b/1pppp1pp/5pn1/p6N/1P3P2/8/P1PPP1PP/NRKQB1RB w GBb - 0 9
 perft 1 26
 perft 2 494
@@ -2259,7 +2260,7 @@ perft 4 296170
 perft 5 8763742
 perft 6 206993496
 
-id 1
+id 251
 epd nbrkq2r/pppp1bpp/4p1n1/5p2/7P/2P3N1/PP1PPPP1/NBKRQ1BR w hc - 0 9
 perft 1 27
 perft 2 701
@@ -2268,7 +2269,7 @@ perft 4 535052
 perft 5 15394667
 perft 6 443506342
 
-id 1
+id 252
 epd nrkbqnbr/2ppp2p/pp6/5pp1/P1P5/8/1P1PPPPP/NRKBQNBR w HBhb - 0 9
 perft 1 21
 perft 2 487
@@ -2277,7 +2278,7 @@ perft 4 285387
 perft 5 7218486
 perft 6 193586674
 
-id 1
+id 253
 epd nr1qnbbr/pk1pppp1/1pp4p/8/3P4/5P1P/PPP1P1P1/NRKQNBBR w HB - 0 9
 perft 1 22
 perft 2 546
@@ -2286,7 +2287,7 @@ perft 4 352855
 perft 5 9587439
 perft 6 259830255
 
-id 1
+id 254
 epd nrkq1rbb/pp1ppp1p/2pn4/8/PP3Pp1/7P/2PPP1P1/NRKQNRBB w FBfb - 0 9
 perft 1 26
 perft 2 839
@@ -2295,7 +2296,7 @@ perft 4 723845
 perft 5 19867117
 perft 6 658535326
 
-id 1
+id 255
 epd b2rknqr/pp1ppppp/8/2P5/n7/P7/1PPNPPPb/BBNRK1QR w HDhd - 2 9
 perft 1 24
 perft 2 699
@@ -2304,7 +2305,7 @@ perft 4 575172
 perft 5 17734818
 perft 6 535094237
 
-id 1
+id 256
 epd bnrbknqr/pp2p2p/2p3p1/3p1p2/8/3P4/PPPNPPPP/B1RBKNQR w HChc - 0 9
 perft 1 23
 perft 2 580
@@ -2313,7 +2314,7 @@ perft 4 385917
 perft 5 10133092
 perft 6 288041554
 
-id 1
+id 257
 epd bnrknb1r/pppp2pp/8/4pp2/6P1/3P3P/qPP1PPQ1/BNRKNB1R w HChc - 0 9
 perft 1 28
 perft 2 1100
@@ -2322,7 +2323,7 @@ perft 4 1217514
 perft 5 36142423
 perft 6 1361341249
 
-id 1
+id 258
 epd b1rknqrb/ppp1p1p1/2np1p1p/8/4N3/6PQ/PPPPPP1P/B1RKN1RB w GCgc - 0 9
 perft 1 36
 perft 2 629
@@ -2331,7 +2332,7 @@ perft 4 453064
 perft 5 16897544
 perft 6 367503974
 
-id 1
+id 259
 epd nb1rknqr/pbppp2p/6p1/1p3p2/5P2/3KP3/PPPP2PP/NBBR1NQR w hd - 2 9
 perft 1 18
 perft 2 557
@@ -2340,7 +2341,7 @@ perft 4 300744
 perft 5 5822387
 perft 6 180936551
 
-id 1
+id 260
 epd nr1bknqr/1ppb1ppp/p7/3pp3/B7/2P3NP/PP1PPPP1/NRB1K1QR w HBhb - 2 9
 perft 1 28
 perft 2 688
@@ -2349,7 +2350,7 @@ perft 4 519785
 perft 5 15153092
 perft 6 425149249
 
-id 1
+id 261
 epd nrbkn2r/pppp1pqp/4p1p1/8/3P2P1/P3B3/P1P1PP1P/NR1KNBQR w HBhb - 1 9
 perft 1 32
 perft 2 808
@@ -2358,7 +2359,7 @@ perft 4 676525
 perft 5 22094260
 perft 6 609377239
 
-id 1
+id 262
 epd nrbknqrb/2p1ppp1/1p6/p2p2Bp/1P6/3P1P2/P1P1P1PP/NR1KNQRB w GBgb - 0 9
 perft 1 30
 perft 2 625
@@ -2367,7 +2368,7 @@ perft 4 418895
 perft 5 12225742
 perft 6 301834282
 
-id 1
+id 263
 epd nbr1knqr/1pp1p1pp/3p1pb1/8/7P/5P2/PPPPPQP1/NBRKBN1R w HC - 2 9
 perft 1 29
 perft 2 863
@@ -2376,7 +2377,7 @@ perft 4 800239
 perft 5 24965592
 perft 6 799182442
 
-id 1
+id 264
 epd n1kbbnqr/prp2ppp/1p1p4/4p3/1P2P3/3P1B2/P1P2PPP/NRK1BNQR w HBh - 2 9
 perft 1 26
 perft 2 653
@@ -2385,7 +2386,7 @@ perft 4 449719
 perft 5 12187583
 perft 6 336872952
 
-id 1
+id 265
 epd nrknbbqr/pp3p1p/B3p1p1/2pp4/4P3/2N3P1/PPPP1P1P/NRK1B1QR w HBhb - 0 9
 perft 1 29
 perft 2 683
@@ -2394,7 +2395,7 @@ perft 4 501807
 perft 5 14684565
 perft 6 394951291
 
-id 1
+id 266
 epd n1knbqrb/pr1p1ppp/Qp6/2p1p3/4P3/6P1/PPPP1P1P/NRKNB1RB w GBg - 2 9
 perft 1 31
 perft 2 552
@@ -2403,7 +2404,7 @@ perft 4 371343
 perft 5 11663330
 perft 6 283583340
 
-id 1
+id 267
 epd nbrknqbr/p3p1pp/1p1p1p2/2p5/2Q1PP2/8/PPPP2PP/NBRKN1BR w HChc - 0 9
 perft 1 37
 perft 2 913
@@ -2412,7 +2413,7 @@ perft 4 825748
 perft 5 28899548
 perft 6 759875563
 
-id 1
+id 268
 epd nrkb1qbr/pp1pppp1/5n2/7p/2p5/1N1NPP2/PPPP2PP/1RKB1QBR w HBhb - 0 9
 perft 1 25
 perft 2 712
@@ -2421,7 +2422,7 @@ perft 4 543870
 perft 5 15045589
 perft 6 445074372
 
-id 1
+id 269
 epd nrk2bbr/pppqpppp/3p4/8/1P3nP1/3P4/P1P1PP1P/NRKNQBBR w HBhb - 1 9
 perft 1 24
 perft 2 814
@@ -2430,7 +2431,7 @@ perft 4 670162
 perft 5 17603960
 perft 6 592121050
 
-id 1
+id 270
 epd nrknqrbb/1p2ppp1/2pp4/Q6p/P2P3P/8/1PP1PPP1/NRKN1RBB w FBfb - 0 9
 perft 1 34
 perft 2 513
@@ -2439,7 +2440,7 @@ perft 4 303908
 perft 5 9569590
 perft 6 206509331
 
-id 1
+id 271
 epd bbnrk1rq/pp2p1pp/2ppn3/5p2/8/3NNP1P/PPPPP1P1/BB1RK1RQ w GDgd - 1 9
 perft 1 28
 perft 2 697
@@ -2448,7 +2449,7 @@ perft 4 517917
 perft 5 15301879
 perft 6 410843713
 
-id 1
+id 272
 epd bnrbknrq/ppppp2p/6p1/5p2/4QPP1/8/PPPPP2P/BNRBKNR1 w GCgc - 0 9
 perft 1 37
 perft 2 901
@@ -2457,7 +2458,7 @@ perft 4 877372
 perft 5 31385912
 perft 6 903831981
 
-id 1
+id 273
 epd bnkrnbrq/ppppp1p1/B6p/5p2/8/4P3/PPPP1PPP/BNKRN1RQ w - - 0 9
 perft 1 26
 perft 2 417
@@ -2466,7 +2467,7 @@ perft 4 217095
 perft 5 5980981
 perft 6 133080499
 
-id 1
+id 274
 epd bnrk1rqb/2pppp1p/3n4/pp4p1/3Q1P2/2N3P1/PPPPP2P/B1RKNR1B w FCfc - 0 9
 perft 1 49
 perft 2 1655
@@ -2475,7 +2476,7 @@ perft 4 2512003
 perft 5 107234294
 perft 6 3651608327
 
-id 1
+id 275
 epd nbbrk1rq/pp2pppp/2pp4/8/2P2n2/6N1/PP1PP1PP/NBBRKR1Q w Dgd - 0 9
 perft 1 28
 perft 2 960
@@ -2484,7 +2485,7 @@ perft 4 884237
 perft 5 26083252
 perft 6 846682836
 
-id 1
+id 276
 epd nrbb2rq/pppk1ppp/4p1n1/3p4/6P1/1BP5/PP1PPPQP/NRB1KNR1 w GB - 0 9
 perft 1 28
 perft 2 735
@@ -2493,7 +2494,7 @@ perft 4 593839
 perft 5 18588316
 perft 6 512048946
 
-id 1
+id 277
 epd nrbk1brq/p1ppppp1/7p/1p6/4P1nP/P7/1PPP1PP1/NRBKNBRQ w GBgb - 0 9
 perft 1 22
 perft 2 572
@@ -2502,7 +2503,7 @@ perft 4 351494
 perft 5 8525056
 perft 6 247615348
 
-id 1
+id 278
 epd nrbk1rqb/1pp2ppp/5n2/p2pp3/5B2/1N1P2P1/PPP1PP1P/1R1KNRQB w FBfb - 0 9
 perft 1 35
 perft 2 927
@@ -2511,7 +2512,7 @@ perft 4 849932
 perft 5 28465693
 perft 6 783048748
 
-id 1
+id 279
 epd nbrkb1rq/p1pp1ppp/4n3/4p3/Pp6/6N1/1PPPPPPP/NBRKBRQ1 w Cgc - 0 9
 perft 1 20
 perft 2 456
@@ -2520,7 +2521,7 @@ perft 4 247733
 perft 5 6124625
 perft 6 154766108
 
-id 1
+id 280
 epd nrkb1nrq/p2pp1pp/1pp2p2/7b/6PP/5P2/PPPPP2N/NRKBB1RQ w GBgb - 0 9
 perft 1 21
 perft 2 479
@@ -2529,7 +2530,7 @@ perft 4 264493
 perft 5 6696458
 perft 6 165253524
 
-id 1
+id 281
 epd nr1nbbr1/pppkpp1p/6p1/3p4/P6P/1P6/1RPPPPP1/N1KNBBRQ w G - 1 9
 perft 1 20
 perft 2 498
@@ -2538,7 +2539,7 @@ perft 4 288813
 perft 5 7197322
 perft 6 188021682
 
-id 1
+id 282
 epd nrknbrqb/3p1ppp/ppN1p3/8/6P1/8/PPPPPP1P/1RKNBRQB w FBfb - 0 9
 perft 1 32
 perft 2 526
@@ -2547,7 +2548,7 @@ perft 4 319836
 perft 5 10755190
 perft 6 220058991
 
-id 1
+id 283
 epd nbrkn1bq/p1pppr1p/1p6/5pp1/8/1N2PP2/PPPP2PP/1BKRNRBQ w c - 1 9
 perft 1 19
 perft 2 491
@@ -2556,7 +2557,7 @@ perft 4 277313
 perft 5 6230616
 perft 6 180748649
 
-id 1
+id 284
 epd nrkbnrbq/ppppppp1/8/8/7p/PP3P2/2PPPRPP/NRKBN1BQ w Bfb - 0 9
 perft 1 16
 perft 2 353
@@ -2565,7 +2566,7 @@ perft 4 156002
 perft 5 3008668
 perft 6 82706705
 
-id 1
+id 285
 epd nrknrbbq/p4ppp/2p1p3/1p1p4/1P2P3/2P5/P1NP1PPP/1RKNRBBQ w EBeb - 0 9
 perft 1 29
 perft 2 728
@@ -2574,7 +2575,7 @@ perft 4 587668
 perft 5 18231199
 perft 6 511686397
 
-id 1
+id 286
 epd nrknr1bb/pppp1p2/7p/2qPp1p1/8/1P5P/P1P1PPP1/NRKNRQBB w EBeb - 0 9
 perft 1 20
 perft 2 714
@@ -2583,7 +2584,7 @@ perft 4 500458
 perft 5 11132758
 perft 6 386064577
 
-id 1
+id 287
 epd bbqnrrkn/ppp2p1p/3pp1p1/8/1PP5/2Q5/P1BPPPPP/B2NRKRN w GE - 0 9
 perft 1 39
 perft 2 593
@@ -2592,7 +2593,7 @@ perft 4 424799
 perft 5 16764576
 perft 6 346185058
 
-id 1
+id 288
 epd bqn1rkrn/p1p2ppp/1p1p4/4p3/3PP2b/8/PPP2PPP/BQNBRKRN w GEge - 2 9
 perft 1 25
 perft 2 773
@@ -2601,7 +2602,7 @@ perft 4 616817
 perft 5 16632403
 perft 6 515838333
 
-id 1
+id 289
 epd bqnrkb1n/p1p1pprp/3p4/1p2P1p1/2PP4/8/PP3PPP/BQNRKBRN w GDd - 1 9
 perft 1 31
 perft 2 860
@@ -2610,7 +2611,7 @@ perft 4 810379
 perft 5 27233018
 perft 6 813751250
 
-id 1
+id 290
 epd bqr1krnb/ppppppp1/7p/3n4/1P4P1/P4N2/2PPPP1P/BQNRKR1B w FDf - 3 9
 perft 1 31
 perft 2 709
@@ -2619,7 +2620,7 @@ perft 4 559830
 perft 5 18608857
 perft 6 480498340
 
-id 1
+id 291
 epd qbbn1krn/pp3ppp/4r3/2ppp3/P1P4P/8/1P1PPPP1/QBBNRKRN w GEg - 1 9
 perft 1 26
 perft 2 775
@@ -2628,7 +2629,7 @@ perft 4 649673
 perft 5 18476807
 perft 6 582542257
 
-id 1
+id 292
 epd qnbbrkrn/1p1pp2p/p7/2p2pp1/8/4P2P/PPPP1PPK/QNBBRR1N w ge - 0 9
 perft 1 25
 perft 2 599
@@ -2637,7 +2638,7 @@ perft 4 389104
 perft 5 10260500
 perft 6 279222412
 
-id 1
+id 293
 epd qnbrkbrn/1ppp2p1/p3p2p/5p2/P4P2/1P6/2PPP1PP/QNBRKBRN w GDgd - 0 9
 perft 1 27
 perft 2 588
@@ -2646,7 +2647,7 @@ perft 4 394829
 perft 5 11640416
 perft 6 293541380
 
-id 1
+id 294
 epd 1nbrkrnb/p1pppp1p/1pq3p1/8/4P3/P1P4N/1P1P1PPP/QNBRKR1B w FDfd - 1 9
 perft 1 18
 perft 2 609
@@ -2655,7 +2656,7 @@ perft 4 406831
 perft 5 8604788
 perft 6 299491047
 
-id 1
+id 295
 epd qb1r1krn/pppp2pp/1n2ppb1/4P3/7P/8/PPPP1PP1/QBNRBKRN w GDgd - 0 9
 perft 1 20
 perft 2 578
@@ -2664,7 +2665,7 @@ perft 4 349453
 perft 5 7939483
 perft 6 229142178
 
-id 1
+id 296
 epd qnr1bkrn/p3pppp/1bpp4/1p6/2P2PP1/8/PP1PPN1P/QNRBBKR1 w GCgc - 0 9
 perft 1 30
 perft 2 865
@@ -2673,7 +2674,7 @@ perft 4 771705
 perft 5 24475596
 perft 6 719842237
 
-id 1
+id 297
 epd 1nkrbbrn/qppppppp/8/8/p2P4/1P5P/P1P1PPP1/QNKRBBRN w - - 0 9
 perft 1 27
 perft 2 672
@@ -2682,7 +2683,7 @@ perft 4 505278
 perft 5 14065717
 perft 6 410130412
 
-id 1
+id 298
 epd 1qrkbrnb/ppp1p1pp/n2p4/5p2/4N3/8/PPPPPPPP/Q1RKBRNB w Ffc - 2 9
 perft 1 25
 perft 2 718
@@ -2691,7 +2692,7 @@ perft 4 536771
 perft 5 14404324
 perft 6 424279467
 
-id 1
+id 299
 epd q1nrkrbn/pp1pppp1/2p4p/8/P7/5Pb1/BPPPPNPP/Q1NRKRB1 w FDfd - 0 9
 perft 1 22
 perft 2 558
@@ -2700,7 +2701,7 @@ perft 4 336042
 perft 5 8516966
 perft 6 228074630
 
-id 1
+id 300
 epd qnrbkrbn/1p1p1pp1/p1p5/4p2p/8/3P1P2/PPP1P1PP/QNRBKRBN w FCfc - 0 9
 perft 1 28
 perft 2 669
@@ -2709,7 +2710,7 @@ perft 4 440930
 perft 5 12055174
 perft 6 313276304
 
-id 1
+id 301
 epd qnrkr1bn/p1pp1ppp/8/1p2p3/3P1P2/bP4P1/P1P1P2P/QNRKRBBN w ECec - 1 9
 perft 1 23
 perft 2 845
@@ -2718,7 +2719,7 @@ perft 4 759778
 perft 5 19939053
 perft 6 718075943
 
-id 1
+id 302
 epd q1krrnbb/p1p1pppp/2np4/1pB5/5P2/8/PPPPP1PP/QNRKRN1B w EC - 0 9
 perft 1 29
 perft 2 776
@@ -2727,7 +2728,7 @@ perft 4 631941
 perft 5 18110831
 perft 6 549019739
 
-id 1
+id 303
 epd bbn1rkrn/pp1p1ppp/8/2p1p1q1/6P1/P7/BPPPPP1P/B1NQRKRN w GEge - 0 9
 perft 1 26
 perft 2 936
@@ -2736,7 +2737,7 @@ perft 4 906801
 perft 5 24984621
 perft 6 901444251
 
-id 1
+id 304
 epd bn1brkrn/pp1qpp1p/2p3p1/3p4/1PPP4/P7/4PPPP/BNQBRKRN w GEge - 1 9
 perft 1 29
 perft 2 755
@@ -2745,7 +2746,7 @@ perft 4 645963
 perft 5 20128587
 perft 6 600207069
 
-id 1
+id 305
 epd b2rkbrn/p1pppppp/qp6/8/1n6/2B2P2/P1PPP1PP/1NQRKBRN w GDgd - 0 9
 perft 1 24
 perft 2 878
@@ -2754,7 +2755,7 @@ perft 4 791007
 perft 5 20840078
 perft 6 775795187
 
-id 1
+id 306
 epd b2rkrnb/pqp1pppp/n7/1p1p4/P7/N1P2N2/1P1PPPPP/B1QRKR1B w FDfd - 4 9
 perft 1 26
 perft 2 724
@@ -2763,7 +2764,7 @@ perft 4 571891
 perft 5 16109522
 perft 6 492933398
 
-id 1
+id 307
 epd 1bbqrkrn/ppppp1p1/8/5p1p/P1n3P1/3P4/1PP1PP1P/NBBQRRKN w ge - 1 9
 perft 1 25
 perft 2 678
@@ -2772,7 +2773,7 @@ perft 4 461211
 perft 5 12173245
 perft 6 329661421
 
-id 1
+id 308
 epd nqb1rrkn/ppp1bppp/3pp3/8/3P4/1P6/PQP1PPPP/N1BBRRKN w - - 1 9
 perft 1 23
 perft 2 503
@@ -2781,7 +2782,7 @@ perft 4 290341
 perft 5 7626054
 perft 6 188215608
 
-id 1
+id 309
 epd nqbrkbr1/p1pppppp/1p6/2N2n2/2P5/5P2/PP1PP1PP/1QBRKBRN w GDgd - 1 9
 perft 1 29
 perft 2 688
@@ -2790,7 +2791,7 @@ perft 4 506302
 perft 5 15167248
 perft 6 399015237
 
-id 1
+id 310
 epd nqbrkrn1/1ppppp2/6pp/p7/1P6/2Q5/P1PPPPPP/N1BRKRNB w FDfd - 0 9
 perft 1 36
 perft 2 602
@@ -2799,7 +2800,7 @@ perft 4 397340
 perft 5 13706856
 perft 6 291708797
 
-id 1
+id 311
 epd nbqrbrkn/pp1p1pp1/2p5/4p2p/2P3P1/1P3P2/P2PP2P/NBQRBKRN w GD - 0 9
 perft 1 34
 perft 2 655
@@ -2808,7 +2809,7 @@ perft 4 474396
 perft 5 16613630
 perft 6 379344541
 
-id 1
+id 312
 epd nqrbbrkn/1p1pppp1/8/p1p4p/4P2P/1N4P1/PPPP1P2/1QRBBKRN w GC - 0 9
 perft 1 23
 perft 2 597
@@ -2817,7 +2818,7 @@ perft 4 400357
 perft 5 10096863
 perft 6 294900903
 
-id 1
+id 313
 epd nqrkbbrn/2p1p1pp/pp1p1p2/8/P2N4/2P5/1P1PPPPP/1QRKBBRN w GCgc - 0 9
 perft 1 32
 perft 2 744
@@ -2826,7 +2827,7 @@ perft 4 550728
 perft 5 17597164
 perft 6 428786656
 
-id 1
+id 314
 epd n1krbrnb/q1pppppp/p7/1p6/3Q4/2P2P2/PP1PP1PP/N1RKBRNB w FC - 1 9
 perft 1 43
 perft 2 1038
@@ -2835,7 +2836,7 @@ perft 4 1074450
 perft 5 40918952
 perft 6 1126603824
 
-id 1
+id 315
 epd nb1rkrbn/p1pp1p1p/qp6/4p1p1/5PP1/P7/1PPPPB1P/NBQRKR1N w FDfd - 2 9
 perft 1 26
 perft 2 645
@@ -2844,7 +2845,7 @@ perft 4 445464
 perft 5 11911314
 perft 6 342563372
 
-id 1
+id 316
 epd nqr1krbn/pppp1ppp/8/8/3pP3/5P2/PPPb1NPP/NQRBKRB1 w FCfc - 3 9
 perft 1 2
 perft 2 51
@@ -2853,7 +2854,7 @@ perft 4 27743
 perft 5 612305
 perft 6 17040200
 
-id 1
+id 317
 epd n1rkrbbn/pqppppp1/7p/1p6/8/1NPP4/PP1KPPPP/1QR1RBBN w ec - 0 9
 perft 1 25
 perft 2 674
@@ -2862,7 +2863,7 @@ perft 4 505337
 perft 5 13421727
 perft 6 403551903
 
-id 1
+id 318
 epd 1qrkrnbb/1p1p1ppp/pnp1p3/8/3PP3/P6P/1PP2PP1/NQRKRNBB w ECec - 0 9
 perft 1 24
 perft 2 688
@@ -2871,7 +2872,7 @@ perft 4 511444
 perft 5 13322502
 perft 6 403441498
 
-id 1
+id 319
 epd 1bnrqkrn/2ppppp1/p7/1p1b3p/3PP1P1/8/PPPQ1P1P/BBNR1KRN w GDgd - 1 9
 perft 1 35
 perft 2 925
@@ -2880,7 +2881,7 @@ perft 4 857060
 perft 5 30458921
 perft 6 824344087
 
-id 1
+id 320
 epd bnrbqkr1/ppp2pp1/6n1/3pp2p/1P6/2N3N1/P1PPPPPP/B1RBQRK1 w gc - 0 9
 perft 1 23
 perft 2 704
@@ -2889,7 +2890,7 @@ perft 4 539587
 perft 5 14154852
 perft 6 450893738
 
-id 1
+id 321
 epd 1nrqkbrn/p1pppppp/8/1p1b4/P6P/5P2/1PPPP1P1/BNRQKBRN w GCgc - 1 9
 perft 1 19
 perft 2 505
@@ -2898,7 +2899,7 @@ perft 4 281422
 perft 5 6450025
 perft 6 175593967
 
-id 1
+id 322
 epd b1rqkrnb/ppppppp1/8/6p1/3n4/NP6/P1PPPP1P/B1RQKRNB w FCfc - 0 9
 perft 1 25
 perft 2 614
@@ -2907,7 +2908,7 @@ perft 4 377660
 perft 5 10391021
 perft 6 259629603
 
-id 1
+id 323
 epd nbbrqkrn/ppp3p1/3pp3/5p1p/1P2P3/P7/2PPQPPP/NBBR1KRN w GDgd - 0 9
 perft 1 30
 perft 2 833
@@ -2916,7 +2917,7 @@ perft 4 717713
 perft 5 22873901
 perft 6 649556666
 
-id 1
+id 324
 epd nr1bqrk1/ppp1pppp/6n1/3pP3/8/5PQb/PPPP2PP/NRBB1KRN w GB - 3 9
 perft 1 26
 perft 2 734
@@ -2925,7 +2926,7 @@ perft 4 582591
 perft 5 17199594
 perft 6 512134836
 
-id 1
+id 325
 epd 1rbqkbr1/ppppp1pp/1n6/4np2/3P1P2/6P1/PPPQP2P/NRB1KBRN w GBgb - 1 9
 perft 1 27
 perft 2 662
@@ -2934,7 +2935,7 @@ perft 4 447464
 perft 5 13038519
 perft 6 338365642
 
-id 1
+id 326
 epd nr1qkr1b/ppp1pp1p/4bn2/3p2p1/4P3/1Q6/PPPP1PPP/NRB1KRNB w FBfb - 4 9
 perft 1 33
 perft 2 939
@@ -2943,7 +2944,7 @@ perft 4 942138
 perft 5 30995969
 perft 6 991509814
 
-id 1
+id 327
 epd nb1qbkrn/pprp1pp1/7p/2p1pB2/Q1PP4/8/PP2PPPP/N1R1BKRN w GCg - 2 9
 perft 1 47
 perft 2 1128
@@ -2952,7 +2953,7 @@ perft 4 1306753
 perft 5 56747878
 perft 6 1560584212
 
-id 1
+id 328
 epd nrqb1rkn/pp2pppp/2bp4/2p5/6P1/2P3N1/PP1PPP1P/NRQBBRK1 w - - 3 9
 perft 1 24
 perft 2 828
@@ -2961,7 +2962,7 @@ perft 4 723705
 perft 5 19506135
 perft 6 668969549
 
-id 1
+id 329
 epd nrq1bbrn/ppkpp2p/2p3p1/P4p2/8/4P1N1/1PPP1PPP/NRQKBBR1 w GB - 0 9
 perft 1 25
 perft 2 525
@@ -2970,7 +2971,7 @@ perft 4 309994
 perft 5 8250997
 perft 6 201795680
 
-id 1
+id 330
 epd Br1kbrn1/pqpppp2/8/6pp/3b2P1/1N6/PPPPPP1P/1RQKBRN1 w FBfb - 3 9
 perft 1 20
 perft 2 790
@@ -2979,7 +2980,7 @@ perft 4 695905
 perft 5 17735648
 perft 6 669854148
 
-id 1
+id 331
 epd nbrqkrbn/2p1p1pp/p7/1p1p1p2/4P1P1/5P2/PPPP3P/NBRQKRBN w FCfc - 0 9
 perft 1 29
 perft 2 771
@@ -2988,7 +2989,7 @@ perft 4 647106
 perft 5 19192982
 perft 6 591335970
 
-id 1
+id 332
 epd 1rqbkrbn/1ppppp1p/1n6/p1N3p1/8/2P4P/PP1PPPP1/1RQBKRBN w FBfb - 0 9
 perft 1 29
 perft 2 502
@@ -2997,7 +2998,7 @@ perft 4 287739
 perft 5 8652810
 perft 6 191762235
 
-id 1
+id 333
 epd 1rqkrbbn/ppnpp1pp/8/2p5/6p1/3P4/PPP1PPPP/NRK1RBBN w eb - 0 9
 perft 1 19
 perft 2 531
@@ -3006,7 +3007,7 @@ perft 4 300384
 perft 5 6506674
 perft 6 184309316
 
-id 1
+id 334
 epd nrqkrnbb/p1pp2pp/5p2/4P3/2p5/4N3/PP1PP1PP/NRQKR1BB w EBeb - 0 9
 perft 1 26
 perft 2 800
@@ -3015,7 +3016,7 @@ perft 4 756695
 perft 5 23952941
 perft 6 809841274
 
-id 1
+id 335
 epd bbnrkqrn/pp3pp1/4p2p/2pp4/4P1P1/1PB5/P1PP1P1P/1BNRKQRN w GDgd - 0 9
 perft 1 33
 perft 2 915
@@ -3024,7 +3025,7 @@ perft 4 878648
 perft 5 29602610
 perft 6 881898159
 
-id 1
+id 336
 epd bnrbkqr1/1p2pppp/6n1/p1pp4/7P/P3P3/1PPPKPP1/BNRB1QRN w gc - 0 9
 perft 1 19
 perft 2 457
@@ -3033,7 +3034,7 @@ perft 4 238944
 perft 5 5356253
 perft 6 144653627
 
-id 1
+id 337
 epd b1rkqbrn/pp1p2pp/2n1p3/2p2p2/3P2PP/8/PPP1PP2/BNKRQBRN w gc - 0 9
 perft 1 30
 perft 2 985
@@ -3042,7 +3043,7 @@ perft 4 1011700
 perft 5 32684185
 perft 6 1080607773
 
-id 1
+id 338
 epd b1rkqrnb/2ppppp1/np6/p6p/1P6/P2P3P/2P1PPP1/BNRKQRNB w FCfc - 0 9
 perft 1 26
 perft 2 692
@@ -3051,7 +3052,7 @@ perft 4 517703
 perft 5 14561181
 perft 6 413226841
 
-id 1
+id 339
 epd nbbrkqrn/1ppp1p2/p6p/4p1p1/5P2/1P5P/P1PPPNP1/NBBRKQR1 w GDgd - 0 9
 perft 1 22
 perft 2 561
@@ -3060,7 +3061,7 @@ perft 4 367487
 perft 5 9307003
 perft 6 273928315
 
-id 1
+id 340
 epd nrbbkqrn/p1pppppp/8/1p6/4P3/7Q/PPPP1PPP/NRBBK1RN w GBgb - 0 9
 perft 1 38
 perft 2 769
@@ -3069,7 +3070,7 @@ perft 4 632310
 perft 5 23091070
 perft 6 560139600
 
-id 1
+id 341
 epd nrbkqbrn/1pppp2p/8/p4pp1/P4PQ1/8/1PPPP1PP/NRBK1BRN w GBgb - 0 9
 perft 1 23
 perft 2 507
@@ -3078,7 +3079,7 @@ perft 4 321423
 perft 5 8887567
 perft 6 237475184
 
-id 1
+id 342
 epd nr1kqr1b/pp2pppp/5n2/2pp4/P5b1/5P2/1PPPPRPP/NRBK1QNB w Bfb - 2 9
 perft 1 18
 perft 2 626
@@ -3087,7 +3088,7 @@ perft 4 434138
 perft 5 9465555
 perft 6 335004239
 
-id 1
+id 343
 epd nbkrbqrn/1pppppp1/8/4P2p/pP6/P7/2PP1PPP/NBRKBQRN w GC - 0 9
 perft 1 22
 perft 2 329
@@ -3096,7 +3097,7 @@ perft 4 148351
 perft 5 4160034
 perft 6 82875306
 
-id 1
+id 344
 epd nrkb1qrn/pp1pp1pp/8/5p1b/P1p4P/6N1/1PPPPPP1/NRKBBQR1 w GBgb - 2 9
 perft 1 16
 perft 2 479
@@ -3105,7 +3106,7 @@ perft 4 275354
 perft 5 5862341
 perft 6 184959796
 
-id 1
+id 345
 epd 1rkq1brn/ppppp1pp/1n6/3b1p2/3N3P/5P2/PPPPP1P1/1RKQBBRN w GBgb - 3 9
 perft 1 23
 perft 2 614
@@ -3114,7 +3115,7 @@ perft 4 418395
 perft 5 11090645
 perft 6 313526088
 
-id 1
+id 346
 epd nrk1brnb/pp1ppppp/2p5/3q4/5P2/PP6/1KPPP1PP/NR1QBRNB w fb - 1 9
 perft 1 25
 perft 2 942
@@ -3123,7 +3124,7 @@ perft 4 792179
 perft 5 19318837
 perft 6 685549171
 
-id 1
+id 347
 epd nbrkqr1n/1pppp2p/p4pp1/2Bb4/5P2/6P1/PPPPP2P/NBRKQ1RN w Cfc - 2 9
 perft 1 30
 perft 2 841
@@ -3132,7 +3133,7 @@ perft 4 677876
 perft 5 20145765
 perft 6 557578726
 
-id 1
+id 348
 epd n1kbqrbn/2p1pppp/1r6/pp1p4/P7/3P4/1PP1PPPP/NRKBQRBN w FBf - 2 9
 perft 1 21
 perft 2 591
@@ -3141,7 +3142,7 @@ perft 4 394289
 perft 5 10295086
 perft 6 292131422
 
-id 1
+id 349
 epd nrkqrbb1/ppp1pppp/3p4/8/4P3/2Pn1P2/PP4PP/NRKQRBBN w EBeb - 0 9
 perft 1 4
 perft 2 88
@@ -3150,7 +3151,7 @@ perft 4 73414
 perft 5 2640555
 perft 6 66958031
 
-id 1
+id 350
 epd nrkqrnbb/ppppp1p1/7p/1P3p2/3P4/2P5/P3PPPP/NRKQRNBB w EBeb - 0 9
 perft 1 29
 perft 2 689
@@ -3159,7 +3160,7 @@ perft 4 508789
 perft 5 16226660
 perft 6 408570219
 
-id 1
+id 351
 epd bbnr1rqn/pp2pkpp/2pp1p2/8/4P1P1/8/PPPP1P1P/BBNRKRQN w FD - 0 9
 perft 1 21
 perft 2 463
@@ -3168,7 +3169,7 @@ perft 4 256244
 perft 5 6826249
 perft 6 165025370
 
-id 1
+id 352
 epd bnrbk1qn/1pppprpp/8/p4p1P/6P1/3P4/PPP1PP2/BNRBKRQN w FCc - 0 9
 perft 1 22
 perft 2 459
@@ -3177,7 +3178,7 @@ perft 4 268157
 perft 5 7371098
 perft 6 190583454
 
-id 1
+id 353
 epd 1nrkrbqn/p1pp1ppp/4p3/1p6/1PP5/6PB/P2PPPbP/BNRKR1QN w ECec - 0 9
 perft 1 30
 perft 2 931
@@ -3186,7 +3187,7 @@ perft 4 887414
 perft 5 28412902
 perft 6 869228014
 
-id 1
+id 354
 epd b1rkr1nb/pppppqp1/n4B2/7p/8/1P4P1/P1PPPP1P/1NKRRQNB w ec - 1 9
 perft 1 36
 perft 2 934
@@ -3195,7 +3196,7 @@ perft 4 930926
 perft 5 30392925
 perft 6 952871799
 
-id 1
+id 355
 epd nbbrkrqn/p1ppp1p1/8/1p3p1p/2P3PP/8/PP1PPPQ1/NBBRKR1N w FDfd - 0 9
 perft 1 34
 perft 2 938
@@ -3204,7 +3205,7 @@ perft 4 921716
 perft 5 31185844
 perft 6 944483246
 
-id 1
+id 356
 epd 1rbbkrqn/ppp1pp2/1n1p2p1/7p/P3P1P1/3P4/1PP2P1P/NRBBKRQN w FBfb - 0 9
 perft 1 26
 perft 2 646
@@ -3213,7 +3214,7 @@ perft 4 472744
 perft 5 14006203
 perft 6 384101783
 
-id 1
+id 357
 epd nrbkrbq1/Qpppp1pp/2n5/5p2/P4P2/6N1/1PPPP1PP/NRBKRB2 w EBeb - 1 9
 perft 1 27
 perft 2 619
@@ -3222,7 +3223,7 @@ perft 4 421845
 perft 5 11718463
 perft 6 313794027
 
-id 1
+id 358
 epd 1rbkr1nb/pppp1qpp/1n6/4pp2/1PP1P3/8/PB1P1PPP/NR1KRQNB w EBeb - 1 9
 perft 1 32
 perft 2 1029
@@ -3231,7 +3232,7 @@ perft 4 1080977
 perft 5 35483796
 perft 6 1181835398
 
-id 1
+id 359
 epd nbrk1rqn/p1ppp2p/1p6/5ppb/8/1N2P2P/PPPP1PP1/1BKRBRQN w fc - 0 9
 perft 1 18
 perft 2 594
@@ -3240,7 +3241,7 @@ perft 4 408544
 perft 5 9329122
 perft 6 315021712
 
-id 1
+id 360
 epd nrkbbrqn/3pppp1/7p/ppp5/P7/1N5P/1PPPPPP1/1RKBBRQN w FBfb - 0 9
 perft 1 19
 perft 2 417
@@ -3249,7 +3250,7 @@ perft 4 218513
 perft 5 5236331
 perft 6 137024458
 
-id 1
+id 361
 epd nrkr1bqn/ppp1pppp/3p4/1b6/7P/P7/1PPPPPP1/NRKRBBQN w DBdb - 1 9
 perft 1 17
 perft 2 457
@@ -3258,7 +3259,7 @@ perft 4 243872
 perft 5 5503579
 perft 6 150091997
 
-id 1
+id 362
 epd nrkrbqnb/p4ppp/1p2p3/2pp4/6P1/2P2N2/PPNPPP1P/1RKRBQ1B w DBdb - 0 9
 perft 1 27
 perft 2 755
@@ -3267,7 +3268,7 @@ perft 4 620093
 perft 5 17883987
 perft 6 547233320
 
-id 1
+id 363
 epd nbkrr1bn/ppB2ppp/4p3/2qp4/4P3/5P2/PPPP2PP/NBRKRQ1N w EC - 1 9
 perft 1 37
 perft 2 1473
@@ -3276,7 +3277,7 @@ perft 4 1956521
 perft 5 68070015
 perft 6 2490912491
 
-id 1
+id 364
 epd n1kbrqbn/p1pp1pp1/4p2p/2B5/1r3P2/8/PPPPP1PP/NRKBRQ1N w EBe - 2 9
 perft 1 30
 perft 2 1029
@@ -3285,7 +3286,7 @@ perft 4 1053163
 perft 5 32318550
 perft 6 1106487743
 
-id 1
+id 365
 epd nrkrqbbn/2pppp1p/8/pp6/1P1P2p1/P5P1/2P1PP1P/NRKRQBBN w DBdb - 0 9
 perft 1 22
 perft 2 421
@@ -3294,7 +3295,7 @@ perft 4 221927
 perft 5 5754555
 perft 6 141245633
 
-id 1
+id 366
 epd nrkr1nbb/1ppp2pp/p3q3/4pp2/2P5/P3P3/1PKP1PPP/NR1RQNBB w db - 0 9
 perft 1 22
 perft 2 619
@@ -3303,7 +3304,7 @@ perft 4 411392
 perft 5 9905109
 perft 6 301403003
 
-id 1
+id 367
 epd bbnrkrnq/1pp1p2p/6p1/p2p1p2/8/1P2P3/P1PP1PPP/BBNRKRNQ w FDfd - 0 9
 perft 1 27
 perft 2 805
@@ -3312,7 +3313,7 @@ perft 4 688224
 perft 5 19133881
 perft 6 620749189
 
-id 1
+id 368
 epd bnrbkrn1/pp1ppp2/2p3pp/8/2Pq4/P4PP1/1P1PP2P/BNRBKRNQ w FCfc - 1 9
 perft 1 20
 perft 2 770
@@ -3321,7 +3322,7 @@ perft 4 577980
 perft 5 13581691
 perft 6 456736500
 
-id 1
+id 369
 epd b1rkrbnq/1pp1pppp/2np4/p5N1/8/1P2P3/P1PP1PPP/BNRKRB1Q w ECec - 0 9
 perft 1 37
 perft 2 740
@@ -3330,7 +3331,7 @@ perft 4 581744
 perft 5 21156664
 perft 6 485803600
 
-id 1
+id 370
 epd b1krrnqb/pp1ppp1p/n1p3p1/2N5/6P1/8/PPPPPP1P/B1RKRNQB w EC - 0 9
 perft 1 34
 perft 2 850
@@ -3339,7 +3340,7 @@ perft 4 752350
 perft 5 25360295
 perft 6 698159474
 
-id 1
+id 371
 epd 1bbr1rnq/ppppkppp/8/3np3/4P3/3P4/PPP1KPPP/NBBRR1NQ w - - 1 9
 perft 1 27
 perft 2 704
@@ -3348,7 +3349,7 @@ perft 4 480474
 perft 5 12817011
 perft 6 341026662
 
-id 1
+id 372
 epd nrbbk1nq/p1p1prpp/1p6/N2p1p2/P7/8/1PPPPPPP/R1BBKRNQ w Fb - 2 9
 perft 1 23
 perft 2 552
@@ -3357,7 +3358,7 @@ perft 4 348593
 perft 5 9236564
 perft 6 248469879
 
-id 1
+id 373
 epd 1rbkrb1q/1pppp1pp/1n5n/p4p2/P3P3/1P6/2PPNPPP/NRBKRB1Q w EBeb - 1 9
 perft 1 22
 perft 2 415
@@ -3366,7 +3367,7 @@ perft 4 217224
 perft 5 5735644
 perft 6 135295774
 
-id 1
+id 374
 epd nrbkr1qb/1pp1pppp/6n1/p2p4/2P1P3/1N4N1/PP1P1PPP/1RBKR1QB w EBeb - 0 9
 perft 1 27
 perft 2 709
@@ -3375,7 +3376,7 @@ perft 4 506214
 perft 5 14192779
 perft 6 380516508
 
-id 1
+id 375
 epd nbrkbrnq/p3p1pp/1pp2p2/3p4/1PP5/4P3/P1KP1PPP/NBR1BRNQ w fc - 0 9
 perft 1 24
 perft 2 715
@@ -3384,7 +3385,7 @@ perft 4 535054
 perft 5 14322279
 perft 6 427269976
 
-id 1
+id 376
 epd nrk1brnq/pp1p1pp1/7p/b1p1p3/1P6/6P1/P1PPPPQP/NRKBBRN1 w FBfb - 2 9
 perft 1 29
 perft 2 675
@@ -3393,7 +3394,7 @@ perft 4 492124
 perft 5 15316285
 perft 6 389051744
 
-id 1
+id 377
 epd nrkr1bnq/1p2pppp/p2p4/1bp5/PP6/1R5N/2PPPPPP/N1KRBB1Q w Ddb - 2 9
 perft 1 27
 perft 2 744
@@ -3402,7 +3403,7 @@ perft 4 571209
 perft 5 16188945
 perft 6 458900901
 
-id 1
+id 378
 epd nrk1b1qb/pppn1ppp/3rp3/3p4/2P3P1/3P4/PPN1PP1P/1RKRBNQB w DBb - 3 9
 perft 1 35
 perft 2 941
@@ -3411,7 +3412,7 @@ perft 4 935791
 perft 5 33150360
 perft 6 968024386
 
-id 1
+id 379
 epd nb1rrnbq/ppkp1ppp/8/2p1p3/P7/1N2P3/1PPP1PPP/1BKRRNBQ w - - 1 9
 perft 1 19
 perft 2 451
@@ -3420,7 +3421,7 @@ perft 4 235472
 perft 5 5506897
 perft 6 139436165
 
-id 1
+id 380
 epd nrkbrnbq/4pppp/1ppp4/p7/2P1P3/3P2N1/PP3PPP/NRKBR1BQ w EBeb - 0 9
 perft 1 29
 perft 2 591
@@ -3429,7 +3430,7 @@ perft 4 384358
 perft 5 11245508
 perft 6 270967202
 
-id 1
+id 381
 epd nrkrnbbq/3p1ppp/1p6/p1p1p3/3P2P1/P4Q2/1PP1PP1P/NRKRNBB1 w DBdb - 0 9
 perft 1 38
 perft 2 792
@@ -3438,7 +3439,7 @@ perft 4 640961
 perft 5 22654797
 perft 6 540864616
 
-id 1
+id 382
 epd nr1rnqbb/ppp1pp1p/3k2p1/3p4/1P5P/3P1N2/P1P1PPP1/NRKR1QBB w DB - 1 9
 perft 1 25
 perft 2 758
@@ -3447,7 +3448,7 @@ perft 4 543643
 perft 5 13890077
 perft 6 402109399
 
-id 1
+id 383
 epd bbqrnnkr/1ppp1p1p/5p2/p5p1/P7/1P4P1/2PPPP1P/1BQRNNKR w HDhd - 0 9
 perft 1 20
 perft 2 322
@@ -3456,7 +3457,7 @@ perft 4 145818
 perft 5 3588435
 perft 6 82754650
 
-id 1
+id 384
 epd bqrb2k1/pppppppr/5nnp/8/3P1P2/4P1N1/PPP3PP/BQRBN1KR w HCc - 1 9
 perft 1 25
 perft 2 597
@@ -3465,7 +3466,7 @@ perft 4 397970
 perft 5 11162476
 perft 6 295682250
 
-id 1
+id 385
 epd bqrnn1kr/1pppbppp/8/4p3/1p6/2P1N2P/P2PPPP1/BQR1NBKR w HChc - 1 9
 perft 1 34
 perft 2 921
@@ -3474,7 +3475,7 @@ perft 4 864023
 perft 5 30126510
 perft 6 850296236
 
-id 1
+id 386
 epd bqr1nkr1/pppppp2/2n3p1/7p/1P1b1P2/8/PQP1P1PP/B1RNNKRB w GCgc - 0 9
 perft 1 23
 perft 2 788
@@ -3483,7 +3484,7 @@ perft 4 686795
 perft 5 20849374
 perft 6 645694580
 
-id 1
+id 387
 epd qbbrnn1r/1pppp1pk/p7/5p1p/P2P3P/3N4/1PP1PPP1/QBBR1NKR w HD - 0 9
 perft 1 34
 perft 2 713
@@ -3492,7 +3493,7 @@ perft 4 562189
 perft 5 19494094
 perft 6 482645160
 
-id 1
+id 388
 epd qrbb2kr/p1pppppp/1p1n4/8/1P3n2/P7/Q1PPP1PP/1RBBNNKR w HBhb - 0 9
 perft 1 28
 perft 2 977
@@ -3501,7 +3502,7 @@ perft 4 949925
 perft 5 27802999
 perft 6 992109168
 
-id 1
+id 389
 epd qrb2bkr/1pp1pppp/2np1n2/pN6/3P4/4B3/PPP1PPPP/QR2NBKR w HBhb - 0 9
 perft 1 27
 perft 2 730
@@ -3510,7 +3511,7 @@ perft 4 585091
 perft 5 17005916
 perft 6 507008968
 
-id 1
+id 390
 epd qrbnnkrb/pp2pp1p/8/2pp2p1/7P/P1P5/QP1PPPP1/1RBNNKRB w GBgb - 0 9
 perft 1 24
 perft 2 813
@@ -3519,7 +3520,7 @@ perft 4 707925
 perft 5 19615756
 perft 6 655850285
 
-id 1
+id 391
 epd 1brnb1kr/p1pppppp/1p6/8/4q2n/1P2P1P1/PNPP1P1P/QBR1BNKR w HChc - 3 9
 perft 1 17
 perft 2 734
@@ -3528,7 +3529,7 @@ perft 4 530809
 perft 5 11032633
 perft 6 416356876
 
-id 1
+id 392
 epd 1rnbbnkr/1pp1pppp/1q1p4/p7/4P3/5PN1/PPPP1BPP/QRNB2KR w HBhb - 1 9
 perft 1 26
 perft 2 809
@@ -3537,7 +3538,7 @@ perft 4 706677
 perft 5 20292750
 perft 6 675408811
 
-id 1
+id 393
 epd qrnnbb1Q/ppp1pk1p/3p2p1/5p2/PP6/5P2/2PPP1PP/1RNNBBKR w HB - 0 9
 perft 1 37
 perft 2 751
@@ -3546,7 +3547,7 @@ perft 4 603931
 perft 5 22443036
 perft 6 515122176
 
-id 1
+id 394
 epd qrnnbkrb/p3p1pp/3p1p2/1pp5/PP2P3/8/2PP1PPP/QRNNBRKB w gb - 0 9
 perft 1 30
 perft 2 906
@@ -3555,7 +3556,7 @@ perft 4 872526
 perft 5 27658191
 perft 6 890966633
 
-id 1
+id 395
 epd qbrnnkbr/1p2pp1p/p1p3p1/3p4/6P1/P1N4P/1PPPPP2/QBR1NKBR w HChc - 0 9
 perft 1 26
 perft 2 701
@@ -3564,7 +3565,7 @@ perft 4 521377
 perft 5 14733245
 perft 6 416881799
 
-id 1
+id 396
 epd qr1b1kbr/1p1ppppp/1n1n4/p1p5/4P3/5NPP/PPPP1P2/QRNB1KBR w HBhb - 1 9
 perft 1 26
 perft 2 649
@@ -3573,7 +3574,7 @@ perft 4 451997
 perft 5 12367604
 perft 6 342165821
 
-id 1
+id 397
 epd qrnnkb1r/1pppppp1/7p/p4b2/4P3/5P1P/PPPP2PR/QRNNKBB1 w Bhb - 1 9
 perft 1 34
 perft 2 941
@@ -3582,7 +3583,7 @@ perft 4 901240
 perft 5 30307554
 perft 6 888709821
 
-id 1
+id 398
 epd qr1nkrbb/p2ppppp/1pp5/8/3Pn3/1NP3P1/PP2PP1P/QR1NKRBB w FBfb - 1 9
 perft 1 19
 perft 2 505
@@ -3591,7 +3592,7 @@ perft 4 294251
 perft 5 7046501
 perft 6 190414579
 
-id 1
+id 399
 epd bbrqn1kr/1pppp1pp/4n3/5p2/p5P1/3P4/PPP1PPKP/BBRQNN1R w hc - 0 9
 perft 1 24
 perft 2 573
@@ -3600,7 +3601,7 @@ perft 4 335845
 perft 5 8191054
 perft 6 227555387
 
-id 1
+id 400
 epd brqb1nkr/pppppp1p/8/4N1pn/5P2/6P1/PPPPP2P/BRQB1NKR w HBhb - 0 9
 perft 1 26
 perft 2 550
@@ -3609,7 +3610,7 @@ perft 4 331666
 perft 5 8903754
 perft 6 223437427
 
-id 1
+id 401
 epd brqnn1kr/pp3ppp/2pbp3/3p4/8/2NPP3/PPP1BPPP/BRQ1N1KR w HBhb - 0 9
 perft 1 27
 perft 2 780
@@ -3618,7 +3619,7 @@ perft 4 589328
 perft 5 16243731
 perft 6 463883447
 
-id 1
+id 402
 epd brq1nkrb/ppp2ppp/8/n2pp2P/P7/4P3/1PPP1PP1/BRQNNKRB w GBgb - 1 9
 perft 1 17
 perft 2 426
@@ -3627,7 +3628,7 @@ perft 4 235162
 perft 5 5048497
 perft 6 153986034
 
-id 1
+id 403
 epd rbbqn1kr/pp2p1pp/6n1/2pp1p2/2P4P/P7/BP1PPPP1/R1BQNNKR w HAha - 0 9
 perft 1 27
 perft 2 916
@@ -3636,7 +3637,7 @@ perft 4 890435
 perft 5 26302461
 perft 6 924181432
 
-id 1
+id 404
 epd 1qbbn1kr/1ppppppp/r3n3/8/p1P5/P7/1P1PPPPP/RQBBNNKR w HAh - 1 9
 perft 1 29
 perft 2 817
@@ -3645,7 +3646,7 @@ perft 4 720277
 perft 5 22147642
 perft 6 670707652
 
-id 1
+id 405
 epd rqbnnbkr/ppp1ppp1/7p/3p4/PP6/7P/1NPPPPP1/RQB1NBKR w HAa - 1 9
 perft 1 23
 perft 2 572
@@ -3654,7 +3655,7 @@ perft 4 381474
 perft 5 10416981
 perft 6 288064942
 
-id 1
+id 406
 epd r1bnnkrb/q1ppp1pp/p7/1p3pB1/2P1P3/3P4/PP3PPP/RQ1NNKRB w GAga - 2 9
 perft 1 31
 perft 2 925
@@ -3663,7 +3664,7 @@ perft 4 860969
 perft 5 26316355
 perft 6 843078864
 
-id 1
+id 407
 epd rbqnb1kr/ppppp1pp/5p2/5N2/7P/1n3P2/PPPPP1P1/RBQNB1KR w HAha - 1 9
 perft 1 32
 perft 2 864
@@ -3672,7 +3673,7 @@ perft 4 766551
 perft 5 24738875
 perft 6 707188107
 
-id 1
+id 408
 epd rqnbbn1r/ppppppp1/6k1/8/6Pp/2PN4/PP1PPPKP/RQ1BBN1R w - - 0 9
 perft 1 27
 perft 2 566
@@ -3681,7 +3682,7 @@ perft 4 347059
 perft 5 9714509
 perft 6 234622128
 
-id 1
+id 409
 epd rqnnbbkr/p1p2pp1/1p1p3p/4p3/4NP2/6P1/PPPPP2P/RQN1BBKR w HAha - 0 9
 perft 1 27
 perft 2 631
@@ -3690,7 +3691,7 @@ perft 4 452734
 perft 5 13307890
 perft 6 356279813
 
-id 1
+id 410
 epd 1qnnbrkb/rppp1ppp/p3p3/8/4P3/2PP1P2/PP4PP/RQNNBKRB w GA - 1 9
 perft 1 24
 perft 2 479
@@ -3699,7 +3700,7 @@ perft 4 271469
 perft 5 7204345
 perft 6 175460841
 
-id 1
+id 411
 epd rbqnn1br/p1pppk1p/1p4p1/5p2/8/P1P2P2/1PBPP1PP/R1QNNKBR w HA - 0 9
 perft 1 31
 perft 2 756
@@ -3708,7 +3709,7 @@ perft 4 625194
 perft 5 20036784
 perft 6 554292502
 
-id 1
+id 412
 epd rqnbnkbr/1ppppp2/p5p1/8/1P4p1/4PP2/P1PP3P/RQNBNKBR w HAha - 0 9
 perft 1 24
 perft 2 715
@@ -3717,7 +3718,7 @@ perft 4 575589
 perft 5 16013189
 perft 6 515078271
 
-id 1
+id 413
 epd rq1nkbbr/1p2pppp/p2n4/2pp4/1P4P1/P2N4/2PPPP1P/RQ1NKBBR w HAha - 1 9
 perft 1 27
 perft 2 694
@@ -3726,7 +3727,7 @@ perft 4 552904
 perft 5 16685687
 perft 6 494574415
 
-id 1
+id 414
 epd r1nnkrbb/pp1pppp1/2p3q1/7p/8/1PPP3P/P3PPP1/RQNNKRBB w FAfa - 1 9
 perft 1 18
 perft 2 520
@@ -3735,7 +3736,7 @@ perft 4 329085
 perft 5 7508201
 perft 6 235103697
 
-id 1
+id 415
 epd bbrnqk1r/pppp3p/6p1/4pp2/3P2P1/8/PPP1PP1P/BBRN1NKR w HC - 0 9
 perft 1 22
 perft 2 566
@@ -3744,7 +3745,7 @@ perft 4 362624
 perft 5 8721079
 perft 6 259069471
 
-id 1
+id 416
 epd brnb1nkr/pppqpp2/3p2pp/8/3PP3/1P6/PBP2PPP/1RNBQNKR w HBhb - 0 9
 perft 1 32
 perft 2 859
@@ -3753,7 +3754,7 @@ perft 4 817464
 perft 5 27734108
 perft 6 829785474
 
-id 1
+id 417
 epd brnq1b1r/ppp1ppkp/3p1np1/8/8/5P1P/PPPPPKPR/BRNQNB2 w - - 0 9
 perft 1 21
 perft 2 511
@@ -3762,7 +3763,7 @@ perft 4 273756
 perft 5 6372681
 perft 6 167139732
 
-id 1
+id 418
 epd brnq1rkb/1pppppp1/3n3p/p7/8/P4NP1/1PPPPPRP/BRNQ1K1B w B - 0 9
 perft 1 25
 perft 2 548
@@ -3771,7 +3772,7 @@ perft 4 341208
 perft 5 9015901
 perft 6 235249649
 
-id 1
+id 419
 epd rbb1qnkr/p1ppp1pp/1p3p2/6n1/8/1PN1P2P/P1PP1PP1/RBB1QNKR w HAha - 0 9
 perft 1 25
 perft 2 673
@@ -3780,7 +3781,7 @@ perft 4 467660
 perft 5 12099119
 perft 6 361714466
 
-id 1
+id 420
 epd rnbb1nkr/1ppp1ppp/4p3/p5q1/6P1/1PP5/PB1PPP1P/RN1BQNKR w HAha - 1 9
 perft 1 19
 perft 2 663
@@ -3789,7 +3790,7 @@ perft 4 489653
 perft 5 11491355
 perft 6 399135495
 
-id 1
+id 421
 epd rnbqnbkr/1pp1p2p/3p1p2/p5p1/5PP1/2P5/PPNPP2P/RNBQ1BKR w HAha - 0 9
 perft 1 24
 perft 2 647
@@ -3798,7 +3799,7 @@ perft 4 461931
 perft 5 12649636
 perft 6 361157611
 
-id 1
+id 422
 epd rnb2krb/pppqppnp/8/3p2p1/1P4P1/7P/P1PPPPB1/RNBQNKR1 w GAga - 1 9
 perft 1 24
 perft 2 722
@@ -3807,7 +3808,7 @@ perft 4 605229
 perft 5 16609220
 perft 6 563558512
 
-id 1
+id 423
 epd rbnqb1kr/pppn1pp1/3p3p/4p3/1P6/P7/R1PPPPPP/1BNQBNKR w Hha - 1 9
 perft 1 20
 perft 2 538
@@ -3816,7 +3817,7 @@ perft 4 345704
 perft 5 8687621
 perft 6 255304141
 
-id 1
+id 424
 epd rnqb1nkr/p1pbp1pp/8/1pPp1p2/P2P4/8/1P2PPPP/RNQBBNKR w HAha - 1 9
 perft 1 35
 perft 2 764
@@ -3825,7 +3826,7 @@ perft 4 632796
 perft 5 22592380
 perft 6 564255328
 
-id 1
+id 425
 epd rnq1bbkr/1p1ppp1p/4n3/p1p3p1/P1PP4/8/RP2PPPP/1NQNBBKR w Hha - 0 9
 perft 1 29
 perft 2 709
@@ -3834,7 +3835,7 @@ perft 4 570580
 perft 5 17597398
 perft 6 506140370
 
-id 1
+id 426
 epd 1nqnbkrb/1pppp2p/r7/p4pp1/3P4/8/PPPBPPPP/RNQNK1RB w g - 0 9
 perft 1 27
 perft 2 1028
@@ -3843,7 +3844,7 @@ perft 4 1050834
 perft 5 30251988
 perft 6 1096869832
 
-id 1
+id 427
 epd rbnqnkbr/p1pp1p1p/8/1p2p3/3P2pP/2P5/PP2PPP1/RBNQNKBR w HAha - 0 9
 perft 1 32
 perft 2 832
@@ -3852,7 +3853,7 @@ perft 4 750336
 perft 5 24945574
 perft 6 724171581
 
-id 1
+id 428
 epd rnq1nkbr/1p1p1ppp/2p1pb2/p7/7P/2P5/PPNPPPPB/RNQB1K1R w HAha - 2 9
 perft 1 31
 perft 2 779
@@ -3861,7 +3862,7 @@ perft 4 638640
 perft 5 19919434
 perft 6 551494771
 
-id 1
+id 429
 epd rnqnk1br/p1ppp1bp/1p3p2/6p1/4N3/P5P1/1PPPPP1P/R1QNKBBR w HAha - 2 9
 perft 1 25
 perft 2 717
@@ -3870,7 +3871,7 @@ perft 4 576577
 perft 5 16525239
 perft 6 507175842
 
-id 1
+id 430
 epd rnq1krbb/p1p1pppp/8/1p1p4/1n5B/2N2P2/PPPPP1PP/RNQ1KR1B w FAfa - 0 9
 perft 1 28
 perft 2 867
@@ -3879,7 +3880,7 @@ perft 4 735686
 perft 5 21112751
 perft 6 654808184
 
-id 1
+id 431
 epd bbrnnqkr/1pp1pppp/3p4/p7/P3P3/7P/1PPP1PP1/BBRNNQKR w HChc - 0 9
 perft 1 24
 perft 2 405
@@ -3888,7 +3889,7 @@ perft 4 210557
 perft 5 6196438
 perft 6 131401224
 
-id 1
+id 432
 epd brnbnqkr/p1ppp3/1p5p/5Pp1/5P2/3N4/PPPPP2P/BRNB1QKR w HBhb g6 0 9
 perft 1 25
 perft 2 785
@@ -3897,7 +3898,7 @@ perft 4 698331
 perft 5 20687969
 perft 6 695850727
 
-id 1
+id 433
 epd br1nqbkr/1ppppp2/pn6/6pp/2PP4/1N4P1/PP2PP1P/BR1NQBKR w HBhb - 0 9
 perft 1 25
 perft 2 596
@@ -3906,7 +3907,7 @@ perft 4 421882
 perft 5 12185361
 perft 6 337805606
 
-id 1
+id 434
 epd 1rnnqkrb/p2ppp1p/1pp5/2N3p1/8/1P6/P1PPPPKP/BR1NQ1RB w gb - 0 9
 perft 1 38
 perft 2 960
@@ -3915,7 +3916,7 @@ perft 4 913665
 perft 5 32490040
 perft 6 880403591
 
-id 1
+id 435
 epd rbbnnqkr/pp3pp1/2p1p3/3p3p/3P3P/1PP5/P3PPP1/RBBNNQKR w HAha - 0 9
 perft 1 30
 perft 2 785
@@ -3924,7 +3925,7 @@ perft 4 656618
 perft 5 19885037
 perft 6 599219582
 
-id 1
+id 436
 epd rn1bnqkr/p1ppppp1/8/1p5p/P4P1P/3N4/1PPPP1b1/RNBB1QKR w HAha - 0 9
 perft 1 27
 perft 2 752
@@ -3933,7 +3934,7 @@ perft 4 613194
 perft 5 18862234
 perft 6 547415271
 
-id 1
+id 437
 epd 1nbnqbkr/1p1p1ppp/r3p3/p1p5/P3P3/3Q4/1PPP1PPP/RNBN1BKR w HAh - 2 9
 perft 1 33
 perft 2 721
@@ -3942,7 +3943,7 @@ perft 4 572535
 perft 5 19648535
 perft 6 496023732
 
-id 1
+id 438
 epd rnbnqkrb/2pppppp/1p6/p7/1PP5/4N2P/P2PPPP1/RNB1QKRB w GAg - 0 9
 perft 1 23
 perft 2 570
@@ -3951,7 +3952,7 @@ perft 4 374196
 perft 5 10022614
 perft 6 279545007
 
-id 1
+id 439
 epd rbnnbq1r/ppppppkp/6p1/N7/4P3/P7/1PPP1PPP/RB1NBQKR w HA - 5 9
 perft 1 27
 perft 2 620
@@ -3960,7 +3961,7 @@ perft 4 440594
 perft 5 13909432
 perft 6 349478320
 
-id 1
+id 440
 epd r1nbbqkr/pppppp1p/8/8/1n3Pp1/3N1QP1/PPPPP2P/RN1BB1KR w HAha - 0 9
 perft 1 31
 perft 2 791
@@ -3969,7 +3970,7 @@ perft 4 682579
 perft 5 22408813
 perft 6 636779732
 
-id 1
+id 441
 epd rnq1bbkr/pp1p1ppp/2pnp3/8/7P/1QP5/PP1PPPPR/RNN1BBK1 w Aha - 2 9
 perft 1 28
 perft 2 559
@@ -3978,7 +3979,7 @@ perft 4 390887
 perft 5 12242780
 perft 6 315431511
 
-id 1
+id 442
 epd rnnqbrkb/2ppppp1/1p1N4/p6p/4P3/8/PPPP1PPP/R1NQBKRB w GA - 0 9
 perft 1 32
 perft 2 638
@@ -3987,7 +3988,7 @@ perft 4 438792
 perft 5 14395828
 perft 6 331782223
 
-id 1
+id 443
 epd rbnnq1br/pppp1kp1/4pp2/7p/PP6/2PP4/4PPPP/RBNNQKBR w HA - 0 9
 perft 1 21
 perft 2 521
@@ -3996,7 +3997,7 @@ perft 4 320429
 perft 5 8239159
 perft 6 227346638
 
-id 1
+id 444
 epd rnnbqkbr/p2ppp2/7p/1pp3p1/2P2N2/8/PP1PPPPP/RN1BQKBR w HAha - 0 9
 perft 1 25
 perft 2 528
@@ -4005,7 +4006,7 @@ perft 4 326094
 perft 5 9079829
 perft 6 232750602
 
-id 1
+id 445
 epd rnn1kbbr/ppppqp2/6p1/2N1p2p/P7/2P5/1P1PPPPP/RN1QKBBR w HAha - 2 9
 perft 1 27
 perft 2 801
@@ -4014,7 +4015,7 @@ perft 4 707078
 perft 5 20334071
 perft 6 682580976
 
-id 1
+id 446
 epd rnnqkrbb/p1p1p1pp/1p3p2/8/3p2Q1/P1P1P3/1P1P1PPP/RNN1KRBB w FAfa - 0 9
 perft 1 37
 perft 2 1014
@@ -4023,7 +4024,7 @@ perft 4 998999
 perft 5 32921537
 perft 6 988770109
 
-id 1
+id 447
 epd bbrnk1qr/1pppppp1/p4n1p/8/P2P2N1/8/1PP1PPPP/BBR1NKQR w HC - 1 9
 perft 1 21
 perft 2 481
@@ -4032,7 +4033,7 @@ perft 4 279993
 perft 5 7015419
 perft 6 187564853
 
-id 1
+id 448
 epd brnbnkqr/1pp1p1p1/p2p1p2/7p/1P4PP/8/PBPPPP2/1RNBNKQR w HBhb - 0 9
 perft 1 31
 perft 2 743
@@ -4041,7 +4042,7 @@ perft 4 660177
 perft 5 22391185
 perft 6 653721389
 
-id 1
+id 449
 epd br2kbqr/ppppp1pp/3n1p2/3P4/3n3P/3N4/PPP1PPP1/BR1NKBQR w HBhb - 3 9
 perft 1 25
 perft 2 872
@@ -4050,7 +4051,7 @@ perft 4 748726
 perft 5 20281962
 perft 6 685749952
 
-id 1
+id 450
 epd br1nkqrb/ppppppp1/8/7p/4P3/n1P2PP1/PP1P3P/BRNNKQRB w GBgb - 0 9
 perft 1 28
 perft 2 607
@@ -4059,7 +4060,7 @@ perft 4 396483
 perft 5 11607818
 perft 6 294181806
 
-id 1
+id 451
 epd rbbn1kqr/pp1pp1p1/2pn3p/5p2/5P2/1P1N4/PNPPP1PP/RBB2KQR w HAha - 1 9
 perft 1 27
 perft 2 725
@@ -4068,7 +4069,7 @@ perft 4 616082
 perft 5 19239812
 perft 6 581716972
 
-id 1
+id 452
 epd rnbbnk1r/pp1ppp1p/6q1/2p5/PP4p1/4P3/2PP1PPP/RNBBNKQR w HAha - 1 9
 perft 1 25
 perft 2 1072
@@ -4077,7 +4078,7 @@ perft 4 1088978
 perft 5 28469879
 perft 6 1122703887
 
-id 1
+id 453
 epd rnbnkbqr/1pp3pp/3p4/p3pp2/3P2P1/2N1N3/PPP1PP1P/R1B1KBQR w HAha - 0 9
 perft 1 31
 perft 2 1028
@@ -4086,7 +4087,7 @@ perft 4 1095472
 perft 5 36025223
 perft 6 1211187800
 
-id 1
+id 454
 epd r1bnkqrb/1ppppppp/p3n3/8/6P1/4N3/PPPPPPRP/RNB1KQ1B w Aga - 1 9
 perft 1 23
 perft 2 457
@@ -4095,7 +4096,7 @@ perft 4 250551
 perft 5 6666787
 perft 6 159759052
 
-id 1
+id 455
 epd rbn1bkqr/p1pp1pp1/1pn5/4p2p/7P/1PBP4/P1P1PPP1/RBNN1KQR w HAha - 0 9
 perft 1 23
 perft 2 470
@@ -4104,7 +4105,7 @@ perft 4 264274
 perft 5 6963287
 perft 6 172833738
 
-id 1
+id 456
 epd rnnbbkqr/3ppppp/p7/1pp5/P6P/6P1/1PPPPP2/RNNBBKQR w HAha - 0 9
 perft 1 26
 perft 2 569
@@ -4113,7 +4114,7 @@ perft 4 375556
 perft 5 11008114
 perft 6 284485303
 
-id 1
+id 457
 epd r1nk1bqr/1pppp1pp/2n5/p4p1b/5P2/1N4B1/PPPPP1PP/RN1K1BQR w HAha - 2 9
 perft 1 25
 perft 2 824
@@ -4122,7 +4123,7 @@ perft 4 738366
 perft 5 20904119
 perft 6 716170771
 
-id 1
+id 458
 epd r1nkbqrb/p2pppp1/npp4p/8/4PP2/2N4P/PPPP2P1/R1NKBQRB w GAga - 0 9
 perft 1 31
 perft 2 548
@@ -4131,7 +4132,7 @@ perft 4 349633
 perft 5 11469548
 perft 6 255067638
 
-id 1
+id 459
 epd rbnnkqbr/ppppp2p/5p2/6p1/2P1B3/P6P/1P1PPPP1/R1NNKQBR w HAha - 1 9
 perft 1 31
 perft 2 809
@@ -4140,7 +4141,7 @@ perft 4 680747
 perft 5 21247414
 perft 6 606221516
 
-id 1
+id 460
 epd 1r1bkqbr/pppp1ppp/2nnp3/8/2P5/N4P2/PP1PP1PP/1RNBKQBR w Hh - 0 9
 perft 1 28
 perft 2 810
@@ -4149,7 +4150,7 @@ perft 4 694599
 perft 5 20188622
 perft 6 636748147
 
-id 1
+id 461
 epd rn1kqbbr/p1pppp1p/1p4p1/1n6/1P2P3/4Q2P/P1PP1PP1/RNNK1BBR w HAha - 1 9
 perft 1 39
 perft 2 848
@@ -4158,7 +4159,7 @@ perft 4 724426
 perft 5 25594662
 perft 6 659615710
 
-id 1
+id 462
 epd rn1kqrbb/pppppppp/8/8/2nP2P1/1P2P3/P1P2P1P/RNNKQRBB w FAfa - 1 9
 perft 1 29
 perft 2 766
@@ -4167,7 +4168,7 @@ perft 4 567971
 perft 5 16944425
 perft 6 456898648
 
-id 1
+id 463
 epd b1rnnkrq/bpppppp1/7p/8/1p6/2B5/PNPPPPPP/1BR1NKRQ w GCgc - 2 9
 perft 1 25
 perft 2 667
@@ -4176,7 +4177,7 @@ perft 4 472678
 perft 5 12865247
 perft 6 365621294
 
-id 1
+id 464
 epd brnb1krq/pppppppp/8/5P2/2P1n2P/8/PP1PP1P1/BRNBNKRQ w GBgb - 1 9
 perft 1 23
 perft 2 620
@@ -4185,7 +4186,7 @@ perft 4 402561
 perft 5 10776855
 perft 6 300125003
 
-id 1
+id 465
 epd b1nnkbrq/pr1pppp1/1p5p/2p5/P2N1P2/8/1PPPP1PP/BR1NKBRQ w GBg - 0 9
 perft 1 24
 perft 2 472
@@ -4194,7 +4195,7 @@ perft 4 267398
 perft 5 7370758
 perft 6 178605165
 
-id 1
+id 466
 epd br1nkrqb/p1p1p1pp/3n4/1p1p1p2/5N1P/4P3/PPPP1PP1/BR1NKRQB w FBfb - 0 9
 perft 1 24
 perft 2 775
@@ -4203,7 +4204,7 @@ perft 4 624309
 perft 5 16429837
 perft 6 539767605
 
-id 1
+id 467
 epd rbbnnkrq/p2pp1pp/2p5/5p2/1pPP1B2/P7/1P2PPPP/RB1NNKRQ w GAga - 0 9
 perft 1 34
 perft 2 921
@@ -4212,7 +4213,7 @@ perft 4 849933
 perft 5 28095833
 perft 6 806446436
 
-id 1
+id 468
 epd rnbbnkr1/1p1ppp1p/2p3p1/p7/2Pq4/1P1P4/P2BPPPP/RN1BNKRQ w GAga - 2 9
 perft 1 26
 perft 2 1139
@@ -4221,7 +4222,7 @@ perft 4 1204863
 perft 5 32825932
 perft 6 1281760240
 
-id 1
+id 469
 epd 1rbnkbrq/pppppp2/n5pp/2P5/P7/4N3/1P1PPPPP/RNB1KBRQ w GAg - 2 9
 perft 1 23
 perft 2 574
@@ -4230,7 +4231,7 @@ perft 4 391413
 perft 5 10203438
 perft 6 301874034
 
-id 1
+id 470
 epd 1nbnkr1b/rppppppq/p7/7p/1P5P/3P2P1/P1P1PP2/RNBNKRQB w FAf - 1 9
 perft 1 33
 perft 2 823
@@ -4239,7 +4240,7 @@ perft 4 724828
 perft 5 23266182
 perft 6 672294132
 
-id 1
+id 471
 epd rbn1bkrq/ppppp3/4n2p/5pp1/1PN5/2P5/P2PPPPP/RBN1BKRQ w GAga - 0 9
 perft 1 27
 perft 2 859
@@ -4248,7 +4249,7 @@ perft 4 796482
 perft 5 23075785
 perft 6 789152120
 
-id 1
+id 472
 epd r1nbbkrq/1ppp2pp/2n2p2/p3p3/5P2/1N4BP/PPPPP1P1/RN1B1KRQ w GAga - 0 9
 perft 1 25
 perft 2 774
@@ -4257,7 +4258,7 @@ perft 4 618805
 perft 5 16718577
 perft 6 515864053
 
-id 1
+id 473
 epd rnnkbbrq/1pppp1p1/5p2/7p/p6P/3N1P2/PPPPP1PQ/RN1KBBR1 w GAga - 0 9
 perft 1 29
 perft 2 673
@@ -4266,7 +4267,7 @@ perft 4 504715
 perft 5 15545590
 perft 6 416359581
 
-id 1
+id 474
 epd r1nkbrqb/pppp1p2/n3p1p1/7p/2P2P2/1P6/P2PPQPP/RNNKBR1B w FAfa - 0 9
 perft 1 27
 perft 2 722
@@ -4275,7 +4276,7 @@ perft 4 593762
 perft 5 18742426
 perft 6 537750982
 
-id 1
+id 475
 epd rbnnkr1q/1ppp2pp/p4p2/P2bp3/4P2P/8/1PPP1PP1/RBNNKRBQ w FAfa - 1 9
 perft 1 26
 perft 2 848
@@ -4284,7 +4285,7 @@ perft 4 741674
 perft 5 21591790
 perft 6 675163653
 
-id 1
+id 476
 epd rn1bkrb1/1ppppp1p/pn4p1/8/P2q3P/3P4/NPP1PPP1/RN1BKRBQ w FAfa - 1 9
 perft 1 22
 perft 2 803
@@ -4293,7 +4294,7 @@ perft 4 632920
 perft 5 15847763
 perft 6 536419559
 
-id 1
+id 477
 epd rn1krbbq/pppp1npp/4pp2/8/4P2P/3P2P1/PPP2P2/RNNKRBBQ w EAea - 1 9
 perft 1 29
 perft 2 810
@@ -4302,7 +4303,7 @@ perft 4 670500
 perft 5 20361517
 perft 6 575069358
 
-id 1
+id 478
 epd rnn1rqbb/ppkp1pp1/2p1p2p/2P5/8/3P1P2/PP2P1PP/RNNKRQBB w EA - 0 9
 perft 1 22
 perft 2 506
@@ -4311,7 +4312,7 @@ perft 4 292344
 perft 5 7287368
 perft 6 189865944
 
-id 1
+id 479
 epd bbqr1knr/pppppp1p/8/4n1p1/2P1P3/6P1/PPQP1P1P/BB1RNKNR w HDhd - 0 9
 perft 1 26
 perft 2 650
@@ -4320,7 +4321,7 @@ perft 4 481200
 perft 5 14301029
 perft 6 394943978
 
-id 1
+id 480
 epd bq1bnknr/pprppp1p/8/2p3p1/4PPP1/8/PPPP3P/BQRBNKNR w HCh - 0 9
 perft 1 24
 perft 2 548
@@ -4329,7 +4330,7 @@ perft 4 347611
 perft 5 9374021
 perft 6 250988458
 
-id 1
+id 481
 epd bqrnkb1r/1p2pppp/p1pp3n/5Q2/2P4P/5N2/PP1PPPP1/B1RNKB1R w HChc - 0 9
 perft 1 46
 perft 2 823
@@ -4338,7 +4339,7 @@ perft 4 673905
 perft 5 26130444
 perft 6 582880996
 
-id 1
+id 482
 epd bq1rknrb/pppppp1p/4n3/6p1/4P1P1/3P1P2/PPP4P/BQRNKNRB w GCg - 0 9
 perft 1 23
 perft 2 618
@@ -4347,7 +4348,7 @@ perft 4 419474
 perft 5 10606831
 perft 6 315124518
 
-id 1
+id 483
 epd q1brnknr/pp1pp1p1/8/2p2p1p/5b2/P4N2/1PPPP1PP/QBBRK1NR w hd - 0 9
 perft 1 22
 perft 2 675
@@ -4356,7 +4357,7 @@ perft 4 473994
 perft 5 12077228
 perft 6 368479752
 
-id 1
+id 484
 epd qrbbnknr/1p1ppp1p/p1p5/8/1P2P1p1/3P1B2/P1P2PPP/QRB1NKNR w HBhb - 0 9
 perft 1 32
 perft 2 722
@@ -4365,7 +4366,7 @@ perft 4 569905
 perft 5 19584539
 perft 6 484814878
 
-id 1
+id 485
 epd qrb1kbnr/p3pppp/2n5/1ppp4/7P/3P1P2/PPP1P1PR/QRBNKBN1 w Bhb - 0 9
 perft 1 26
 perft 2 831
@@ -4374,7 +4375,7 @@ perft 4 724505
 perft 5 20500804
 perft 6 662608969
 
-id 1
+id 486
 epd qrbnknrb/ppp1pp2/6p1/7p/PPNp4/8/2PPPPPP/QRB1KNRB w GBgb - 0 9
 perft 1 31
 perft 2 840
@@ -4383,7 +4384,7 @@ perft 4 742772
 perft 5 24422614
 perft 6 701363800
 
-id 1
+id 487
 epd qbrnbknr/pp1pp1pp/8/2p2p2/3Q4/PP6/2PPPPPP/1BRNBKNR w HChc - 0 9
 perft 1 38
 perft 2 1121
@@ -4392,7 +4393,7 @@ perft 4 1198438
 perft 5 41108769
 perft 6 1285503872
 
-id 1
+id 488
 epd qr1bbk1r/pppppp1p/1n6/5np1/4B3/1PP5/P2PPPPP/QRN1BKNR w HBhb - 0 9
 perft 1 25
 perft 2 694
@@ -4401,7 +4402,7 @@ perft 4 472950
 perft 5 12164609
 perft 6 345122090
 
-id 1
+id 489
 epd qrnkbbnr/1p1pp2p/p7/2p1Npp1/6P1/7P/PPPPPP2/QR1KBBNR w HBhb - 0 9
 perft 1 27
 perft 2 586
@@ -4410,7 +4411,7 @@ perft 4 393391
 perft 5 11409633
 perft 6 298054792
 
-id 1
+id 490
 epd qrnkbnrb/pp1p1p2/2p1p1pp/4N3/P4P2/8/1PPPP1PP/QR1KBNRB w GBgb - 0 9
 perft 1 32
 perft 2 645
@@ -4419,7 +4420,7 @@ perft 4 460319
 perft 5 15037464
 perft 6 358531599
 
-id 1
+id 491
 epd qbrnknbr/1pppppp1/p6p/8/1P6/3PP3/PQP2PPP/1BRNKNBR w HChc - 3 9
 perft 1 26
 perft 2 595
@@ -4428,7 +4429,7 @@ perft 4 415022
 perft 5 12214768
 perft 6 323518628
 
-id 1
+id 492
 epd qrnbk1br/1ppppp1p/p5p1/8/4Pn2/4K1P1/PPPP1P1P/QRNB1NBR w hb - 0 9
 perft 1 24
 perft 2 609
@@ -4437,7 +4438,7 @@ perft 4 359415
 perft 5 8538539
 perft 6 230364479
 
-id 1
+id 493
 epd qrnk1bbr/1pnp1ppp/p1p1p3/8/3Q4/1P1N3P/P1PPPPP1/1RNK1BBR w HBhb - 0 9
 perft 1 43
 perft 2 1106
@@ -4446,7 +4447,7 @@ perft 4 1123080
 perft 5 41695761
 perft 6 1113836402
 
-id 1
+id 494
 epd qrnknrb1/pppppp2/8/6pp/4P2P/3P1P2/PbP3P1/QRNKNRBB w FBfb - 0 9
 perft 1 24
 perft 2 658
@@ -4455,7 +4456,7 @@ perft 4 488373
 perft 5 14457245
 perft 6 400971226
 
-id 1
+id 495
 epd bbrqnrk1/ppp2ppp/7n/3pp3/8/P4N1N/1PPPPPPP/BBRQ1RK1 w - - 1 9
 perft 1 22
 perft 2 503
@@ -4464,7 +4465,7 @@ perft 4 310760
 perft 5 8080951
 perft 6 224960353
 
-id 1
+id 496
 epd brqbnk1r/1ppp1ppp/8/p3pn2/8/2PP1P2/PP2PKPP/BRQBN1NR w hb - 1 9
 perft 1 25
 perft 2 745
@@ -4473,7 +4474,7 @@ perft 4 570459
 perft 5 15520298
 perft 6 460840861
 
-id 1
+id 497
 epd brqnkbnr/pp2pp1p/3p4/2p5/5p2/3P3P/PPP1PPP1/B1RNKBNR w Hhb - 0 9
 perft 1 19
 perft 2 516
@@ -4482,7 +4483,7 @@ perft 4 312996
 perft 5 6995034
 perft 6 214340699
 
-id 1
+id 498
 epd brq1kn1b/1ppppprp/2n3p1/p7/P1N5/6P1/1PPPPP1P/BRQNK1RB w GBb - 2 9
 perft 1 29
 perft 2 557
@@ -4491,7 +4492,7 @@ perft 4 352277
 perft 5 10840256
 perft 6 249999654
 
-id 1
+id 499
 epd rbbq1k1r/ppp1pppp/7n/1n1p4/5P2/P2P4/1PPBP1PP/RB1QNKNR w HAha - 1 9
 perft 1 25
 perft 2 769
@@ -4500,7 +4501,7 @@ perft 4 638340
 perft 5 17438715
 perft 6 570893953
 
-id 1
+id 500
 epd r1bbnk1r/qpp1pppp/p6n/3p4/1P6/5N1P/P1PPPPP1/RQBBK1NR w ha - 0 9
 perft 1 23
 perft 2 728
@@ -4509,7 +4510,7 @@ perft 4 587364
 perft 5 16053564
 perft 6 529082811
 
-id 1
+id 501
 epd rqbnkbnr/1pp2p1p/3p4/p3p1p1/8/2P2P2/PP1PPNPP/RQBNKB1R w HAha - 0 9
 perft 1 26
 perft 2 772
@@ -4518,7 +4519,7 @@ perft 4 653704
 perft 5 19571559
 perft 6 593915677
 
-id 1
+id 502
 epd r1bnknrb/pqppp1p1/1p5p/5p2/7P/3P2N1/PPP1PPP1/RQBNK1RB w GAga - 2 9
 perft 1 27
 perft 2 748
@@ -4527,7 +4528,7 @@ perft 4 597105
 perft 5 16324542
 perft 6 506453626
 
-id 1
+id 503
 epd rbqnbknr/pp1pppp1/8/2p5/3P3p/5N1P/PPP1PPPR/RBQNBK2 w Aha - 0 9
 perft 1 30
 perft 2 859
@@ -4536,7 +4537,7 @@ perft 4 819631
 perft 5 26363334
 perft 6 842796987
 
-id 1
+id 504
 epd rqnbbrk1/ppppppp1/8/5n1p/3P3P/2B3P1/PPP1PP2/RQNB1KNR w HA - 0 9
 perft 1 22
 perft 2 505
@@ -4545,7 +4546,7 @@ perft 4 283464
 perft 5 7055215
 perft 6 186760784
 
-id 1
+id 505
 epd rqnkbbnr/pp2p1p1/8/2pp1p1p/3PPP2/8/PPP1N1PP/RQNKBB1R w HAha - 0 9
 perft 1 28
 perft 2 832
@@ -4554,7 +4555,7 @@ perft 4 722857
 perft 5 20429246
 perft 6 663183060
 
-id 1
+id 506
 epd rqnkbnr1/pppp2bp/6p1/4pp2/1P2P3/3NN3/P1PP1PPP/RQ1KB1RB w GAga - 0 9
 perft 1 28
 perft 2 641
@@ -4563,7 +4564,7 @@ perft 4 459993
 perft 5 14038570
 perft 6 364210162
 
-id 1
+id 507
 epd rbq2kbr/pppppppp/2n5/P7/3P1n2/2P5/1P2PPPP/RBQNKNBR w HA - 1 9
 perft 1 31
 perft 2 889
@@ -4572,7 +4573,7 @@ perft 4 766181
 perft 5 24299415
 perft 6 692180754
 
-id 1
+id 508
 epd rq1bkn1r/ppppp2p/3n4/5pp1/2b3P1/1N1P1P2/PPP1P2P/RQ1BKNBR w HAha - 1 9
 perft 1 28
 perft 2 810
@@ -4581,7 +4582,7 @@ perft 4 657520
 perft 5 18719949
 perft 6 556282676
 
-id 1
+id 509
 epd r1nknbbr/p2ppp1p/1pp3p1/8/1P6/4P3/P1PPNPPq/R1QKNBBR w HAha - 0 9
 perft 1 24
 perft 2 797
@@ -4590,7 +4591,7 @@ perft 4 719069
 perft 5 21862776
 perft 6 716521139
 
-id 1
+id 510
 epd rqnknrbb/ppp1p3/5ppp/2Np4/2P5/4P3/PP1P1PPP/RQNK1RBB w FAfa - 0 9
 perft 1 34
 perft 2 686
@@ -4599,7 +4600,7 @@ perft 4 515541
 perft 5 17664543
 perft 6 423574794
 
-id 1
+id 511
 epd 1brnqknr/2p1pppp/p2p4/1P6/6P1/4Nb2/PP1PPP1P/BBR1QKNR w HChc - 1 9
 perft 1 34
 perft 2 1019
@@ -4608,7 +4609,7 @@ perft 4 1003103
 perft 5 33322477
 perft 6 1043293394
 
-id 1
+id 512
 epd brn1qknr/1p1pppp1/pb5p/Q1p5/3P3P/8/PPP1PPPR/BRNB1KN1 w Bhb - 2 9
 perft 1 32
 perft 2 642
@@ -4617,7 +4618,7 @@ perft 4 464895
 perft 5 15454749
 perft 6 371861782
 
-id 1
+id 513
 epd brnqkbnr/pppppp2/8/6pp/6P1/P2P1P2/1PP1P2P/BRNQKBNR w HBhb - 0 9
 perft 1 20
 perft 2 441
@@ -4626,7 +4627,7 @@ perft 4 240220
 perft 5 5770284
 perft 6 153051835
 
-id 1
+id 514
 epd 2nqknrb/1rpppppp/5B2/pp6/1PP1b3/3P4/P3PPPP/1RNQKNRB w GBg - 1 9
 perft 1 35
 perft 2 1042
@@ -4635,7 +4636,7 @@ perft 4 1101159
 perft 5 38505058
 perft 6 1202668717
 
-id 1
+id 515
 epd rb1nqknr/1pp1pppp/8/3p4/p2P4/6PN/PPPQPP1P/RBBN1K1R w HAha - 0 9
 perft 1 29
 perft 2 692
@@ -4644,7 +4645,7 @@ perft 4 555018
 perft 5 17820605
 perft 6 497251206
 
-id 1
+id 516
 epd rnbbqknr/pppp4/5p2/4p1pp/P7/2N2PP1/1PPPP2P/R1BBQKNR w HAha - 0 9
 perft 1 23
 perft 2 595
@@ -4653,7 +4654,7 @@ perft 4 415772
 perft 5 10881112
 perft 6 329010121
 
-id 1
+id 517
 epd rn1qkbnr/p1p1pp1p/bp4p1/3p4/1P6/4P3/P1PP1PPP/RNBQKBNR w HAha - 0 9
 perft 1 30
 perft 2 794
@@ -4662,7 +4663,7 @@ perft 4 690811
 perft 5 21657601
 perft 6 647745807
 
-id 1
+id 518
 epd r1bqk1rb/pppnpppp/5n2/3p4/2P3PP/2N5/PP1PPP2/R1BQKNRB w GAga - 1 9
 perft 1 32
 perft 2 821
@@ -4671,7 +4672,7 @@ perft 4 733155
 perft 5 24923473
 perft 6 710765657
 
-id 1
+id 519
 epd rbnqbknr/1p1ppp1p/6p1/p1p5/7P/3P4/PPP1PPP1/RBNQBKNR w HAha - 0 9
 perft 1 24
 perft 2 720
@@ -4680,7 +4681,7 @@ perft 4 575027
 perft 5 15992882
 perft 6 501093456
 
-id 1
+id 520
 epd r1qbbk1r/pp1ppppp/n1p5/5n2/B1P3P1/8/PP1PPP1P/RNQ1BKNR w HAha - 0 9
 perft 1 27
 perft 2 831
@@ -4689,7 +4690,7 @@ perft 4 698986
 perft 5 19948650
 perft 6 637973209
 
-id 1
+id 521
 epd rnqkbb1r/p1pppppp/8/8/1p4n1/PP4PP/2PPPP2/RNQKBBNR w HAha - 0 9
 perft 1 18
 perft 2 463
@@ -4698,7 +4699,7 @@ perft 4 256152
 perft 5 6065231
 perft 6 172734380
 
-id 1
+id 522
 epd rnqk1nrb/pppbpp2/7p/3p2p1/4B3/2N1N1P1/PPPPPP1P/R1QKB1R1 w GAga - 0 9
 perft 1 34
 perft 2 1171
@@ -4707,7 +4708,7 @@ perft 4 1318217
 perft 5 42109356
 perft 6 1465473753
 
-id 1
+id 523
 epd rbnqknbr/1pp1ppp1/3p4/7p/p2P2PP/2P5/PP2PP2/RBNQKNBR w HAha - 0 9
 perft 1 32
 perft 2 867
@@ -4716,7 +4717,7 @@ perft 4 798722
 perft 5 26632459
 perft 6 781067145
 
-id 1
+id 524
 epd rn1bknbr/pq2pppp/1p6/2pp4/P7/1P1P4/2PNPPPP/RNQBK1BR w HAha - 0 9
 perft 1 24
 perft 2 627
@@ -4725,7 +4726,7 @@ perft 4 462942
 perft 5 13200921
 perft 6 385193532
 
-id 1
+id 525
 epd r1qk1bbr/ppp1pp1p/2np1n2/6p1/2PP4/3BP3/PP3PPP/RNQKN1BR w HAha - 2 9
 perft 1 31
 perft 2 992
@@ -4734,7 +4735,7 @@ perft 4 986631
 perft 5 30397368
 perft 6 1011631987
 
-id 1
+id 526
 epd r1qknrbb/pppp1p2/2n3p1/4p2p/8/QPP5/P1NPPPPP/RN1K1RBB w FAfa - 2 9
 perft 1 30
 perft 2 702
@@ -4743,7 +4744,7 @@ perft 4 532939
 perft 5 16813114
 perft 6 438096194
 
-id 1
+id 527
 epd bbkr1qnr/2pppppp/2n5/pp6/8/PPN5/1BPPPPPP/1BR1KQNR w HC - 2 9
 perft 1 25
 perft 2 573
@@ -4752,7 +4753,7 @@ perft 4 380910
 perft 5 10554668
 perft 6 283975400
 
-id 1
+id 528
 epd 1rnbkqnr/1bpppppp/1p6/7P/p2P4/5P2/PPP1P1P1/BRNBKQNR w HBhb - 0 9
 perft 1 21
 perft 2 503
@@ -4761,7 +4762,7 @@ perft 4 301084
 perft 5 7679979
 perft 6 207799378
 
-id 1
+id 529
 epd brnkqbnr/2p1pppp/1p6/3p4/1pP5/P6P/3PPPP1/BRNKQBNR w HBhb - 0 9
 perft 1 28
 perft 2 743
@@ -4770,7 +4771,7 @@ perft 4 587192
 perft 5 17354516
 perft 6 507176753
 
-id 1
+id 530
 epd br1kqnrb/npp1pppp/8/3p4/p4N2/PP6/2PPPPPP/BR1KQNRB w GBgb - 0 9
 perft 1 31
 perft 2 808
@@ -4779,7 +4780,7 @@ perft 4 698475
 perft 5 22376575
 perft 6 640362920
 
-id 1
+id 531
 epd rbbnkq1r/pppppp1p/7n/6p1/P5P1/2P2N2/1P1PPP1P/RBBNKQ1R w HAha - 1 9
 perft 1 29
 perft 2 580
@@ -4788,7 +4789,7 @@ perft 4 404831
 perft 5 12730970
 perft 6 325226128
 
-id 1
+id 532
 epd rnbbk1nr/pp2qppp/2ppp3/8/3P4/P1N4N/1PP1PPPP/R1BBKQ1R w HAha - 0 9
 perft 1 29
 perft 2 838
@@ -4797,7 +4798,7 @@ perft 4 721884
 perft 5 21100580
 perft 6 646624429
 
-id 1
+id 533
 epd rnbk1b1r/ppppn1pp/4pp2/7q/7P/P5PB/1PPPPP2/RNBKQ1NR w HAha - 3 9
 perft 1 20
 perft 2 729
@@ -4806,7 +4807,7 @@ perft 4 576199
 perft 5 14507076
 perft 6 498621813
 
-id 1
+id 534
 epd r2kqnrb/pbppppp1/np5p/8/4Q1P1/3P4/PPP1PP1P/RNBK1NRB w GAga - 2 9
 perft 1 47
 perft 2 1219
@@ -4815,7 +4816,7 @@ perft 4 1486353
 perft 5 65239153
 perft 6 1834391369
 
-id 1
+id 535
 epd rbnkbq1r/p1p2ppp/1p2pn2/3p4/P3P3/3P4/1PP1KPPP/RBN1BQNR w ha - 2 9
 perft 1 29
 perft 2 923
@@ -4824,7 +4825,7 @@ perft 4 883866
 perft 5 26202752
 perft 6 868565895
 
-id 1
+id 536
 epd rk1bb1nr/ppppqppp/n7/1N2p3/6P1/7N/PPPPPP1P/R1KBBQ1R w HA - 6 9
 perft 1 27
 perft 2 703
@@ -4833,7 +4834,7 @@ perft 4 559525
 perft 5 16049807
 perft 6 492966455
 
-id 1
+id 537
 epd rnkqbbnr/p1ppp2p/1p4p1/8/1B3p1P/2NP4/PPP1PPP1/R1KQ1BNR w HAha - 0 9
 perft 1 29
 perft 2 610
@@ -4842,7 +4843,7 @@ perft 4 438277
 perft 5 14020041
 perft 6 355083962
 
-id 1
+id 538
 epd rnkqb1rb/pp1p1ppp/4p3/2P3n1/8/1PP5/P3PPPP/RNKQBNRB w GAga - 0 9
 perft 1 29
 perft 2 675
@@ -4851,7 +4852,7 @@ perft 4 535821
 perft 5 17000613
 perft 6 476598337
 
-id 1
+id 539
 epd rb1kqnbr/pp1pp1p1/1np2p2/7p/P1P3PP/8/1P1PPP2/RBNKQNBR w HAha - 0 9
 perft 1 31
 perft 2 1077
@@ -4860,7 +4861,7 @@ perft 4 1183381
 perft 5 37415304
 perft 6 1328374620
 
-id 1
+id 540
 epd rnkbq1br/ppp2ppp/3p4/Q3p1n1/5P2/3P2P1/PPP1P2P/RNKB1NBR w HAha - 0 9
 perft 1 41
 perft 2 1201
@@ -4869,7 +4870,7 @@ perft 4 1420367
 perft 5 52991625
 perft 6 1675608008
 
-id 1
+id 541
 epd rn1qnbbr/pp2pppp/2ppk3/8/2PP4/3Q1N2/PP2PPPP/RNK2BBR w HA - 1 9
 perft 1 34
 perft 2 666
@@ -4878,7 +4879,7 @@ perft 4 472299
 perft 5 15860369
 perft 6 353831792
 
-id 1
+id 542
 epd rnkqnr1b/ppppp1pp/5p2/8/Q1P2P2/8/PP1P2PP/RbK1NRBB w FAfa - 0 9
 perft 1 36
 perft 2 876
@@ -4887,7 +4888,7 @@ perft 4 788580
 perft 5 29022529
 perft 6 736717252
 
-id 1
+id 543
 epd bbrn1nqr/ppp1k1pp/5p2/3pp3/7P/3PN3/PPP1PPP1/BBRK1NQR w - - 1 9
 perft 1 24
 perft 2 583
@@ -4896,7 +4897,7 @@ perft 4 383532
 perft 5 10522064
 perft 6 280707118
 
-id 1
+id 544
 epd brnbkn1r/1pppp1p1/4q3/p4p1p/7P/1N3P2/PPPPP1PQ/BR1BKN1R w HBhb - 2 9
 perft 1 27
 perft 2 935
@@ -4905,7 +4906,7 @@ perft 4 885699
 perft 5 26000648
 perft 6 873063158
 
-id 1
+id 545
 epd br1knbqr/pp2p1pp/1n6/2pp1p2/6P1/2P4B/PP1PPPQP/BRNKN2R w HBhb - 0 9
 perft 1 27
 perft 2 681
@@ -4914,7 +4915,7 @@ perft 4 510687
 perft 5 14954779
 perft 6 415624943
 
-id 1
+id 546
 epd brnk1qrb/p1ppppp1/1p5p/8/P3n3/1N4P1/1PPPPPRP/BR1KNQ1B w Bgb - 0 9
 perft 1 22
 perft 2 638
@@ -4923,7 +4924,7 @@ perft 4 412346
 perft 5 9760752
 perft 6 293499724
 
-id 1
+id 547
 epd rbbnknqr/pppp3p/5pp1/8/1P1pP3/7P/P1P2PP1/RBBNKNQR w HAha - 0 9
 perft 1 29
 perft 2 756
@@ -4932,7 +4933,7 @@ perft 4 614074
 perft 5 17602252
 perft 6 528140595
 
-id 1
+id 548
 epd 1nbbknqr/rpp1ppp1/1Q1p3p/p7/2P2PP1/8/PP1PP2P/RNBBKN1R w HAh - 2 9
 perft 1 37
 perft 2 977
@@ -4941,7 +4942,7 @@ perft 4 944867
 perft 5 33695089
 perft 6 940198007
 
-id 1
+id 549
 epd rnb2bqr/ppkpppp1/3n3p/2p5/6PP/2N2P2/PPPPP3/R1BKNBQR w HA - 2 9
 perft 1 30
 perft 2 647
@@ -4950,7 +4951,7 @@ perft 4 467780
 perft 5 15115531
 perft 6 369257622
 
-id 1
+id 550
 epd rn1k1qrb/p1pppppp/bp6/8/4n3/P4BPP/1PPPPP2/RNBKNQR1 w GAga - 2 9
 perft 1 22
 perft 2 670
@@ -4959,7 +4960,7 @@ perft 4 451517
 perft 5 11199653
 perft 6 339919682
 
-id 1
+id 551
 epd rb2bnqr/nppkpppp/3p4/p7/1P6/P2N2P1/2PPPP1P/RB1KBNQR w HA - 3 9
 perft 1 22
 perft 2 479
@@ -4968,7 +4969,7 @@ perft 4 264739
 perft 5 6831555
 perft 6 167329117
 
-id 1
+id 552
 epd r1kbb1qr/2pppppp/np2n3/p7/2P3P1/8/PP1PPPQP/RNKBBN1R w HAha - 1 9
 perft 1 32
 perft 2 723
@@ -4977,7 +4978,7 @@ perft 4 581832
 perft 5 19472074
 perft 6 504622114
 
-id 1
+id 553
 epd rnknbb1r/p1ppp1pp/8/1p1P1p1q/8/P1P5/1P2PPPP/RNKNBBQR w HAha - 1 9
 perft 1 19
 perft 2 607
@@ -4986,7 +4987,7 @@ perft 4 417451
 perft 5 9753617
 perft 6 325177085
 
-id 1
+id 554
 epd rnkn1qrb/pp1bp1pp/2p5/1N1p1p2/8/2P5/PPKPPPPP/R2NBQRB w ga - 2 9
 perft 1 27
 perft 2 533
@@ -4995,7 +4996,7 @@ perft 4 330747
 perft 5 9206957
 perft 6 232664675
 
-id 1
+id 555
 epd r1nknqbr/pp2p1pp/2p2p2/3p4/6P1/PP1P4/2P1PP1b/RBNKNQBR w HAha - 0 9
 perft 1 20
 perft 2 582
@@ -5004,7 +5005,7 @@ perft 4 409166
 perft 5 10708639
 perft 6 326565393
 
-id 1
+id 556
 epd rnkb1qbr/p1pp1p1p/1p2pn2/1Q4p1/4P3/N4P2/PPPP2PP/R1KBN1BR w HAha - 0 9
 perft 1 40
 perft 2 1038
@@ -5013,7 +5014,7 @@ perft 4 1051441
 perft 5 39145902
 perft 6 1079612614
 
-id 1
+id 557
 epd rn2qbbr/1pkppp1p/p3n1p1/8/8/2P2P2/PP1PP1PP/RNKN1BBR w HA - 0 9
 perft 1 24
 perft 2 605
@@ -5022,7 +5023,7 @@ perft 4 385964
 perft 5 9687507
 perft 6 260874068
 
-id 1
+id 558
 epd rn1nqrbb/p1kppp1p/8/1pp3p1/1P6/2N1P3/P1PP1PPP/RK1NQRBB w - - 0 9
 perft 1 21
 perft 2 540
@@ -5031,7 +5032,7 @@ perft 4 337997
 perft 5 8436136
 perft 6 237525904
 
-id 1
+id 559
 epd bbrnknrq/1pp3pp/p2p1p2/4p3/P7/1P2N3/2PPPPPP/BBRN1RKQ w gc - 0 9
 perft 1 24
 perft 2 527
@@ -5040,7 +5041,7 @@ perft 4 326175
 perft 5 9139962
 perft 6 226253685
 
-id 1
+id 560
 epd brnb1nrq/pppp1kpp/4p3/8/5p1P/P1P3P1/1P1PPP2/BRNBKNRQ w GB - 1 9
 perft 1 29
 perft 2 773
@@ -5049,7 +5050,7 @@ perft 4 638768
 perft 5 20503775
 perft 6 560338709
 
-id 1
+id 561
 epd br1k1brq/ppppp2p/1n1n1pp1/8/P1P5/3P2P1/1P2PP1P/BRNKNBRQ w GBgb - 0 9
 perft 1 28
 perft 2 811
@@ -5058,7 +5059,7 @@ perft 4 664880
 perft 5 19913758
 perft 6 565143976
 
-id 1
+id 562
 epd 1r1knrqb/n1pppppp/p1b5/1p6/8/3N1P2/PPPPP1PP/BRNK1RQB w fb - 3 9
 perft 1 29
 perft 2 753
@@ -5067,7 +5068,7 @@ perft 4 620019
 perft 5 20044474
 perft 6 558383603
 
-id 1
+id 563
 epd rbbnk1rq/pppppppp/8/3Pn3/8/4P1P1/PPP2P1P/RBBNKNRQ w GAga - 1 9
 perft 1 22
 perft 2 551
@@ -5076,7 +5077,7 @@ perft 4 324608
 perft 5 8204171
 perft 6 217689974
 
-id 1
+id 564
 epd rnbbk1rq/2pppp1p/p3n1p1/1p6/P3N3/8/1PPPPPPP/RNBB1KRQ w ga - 0 9
 perft 1 26
 perft 2 742
@@ -5085,7 +5086,7 @@ perft 4 599527
 perft 5 16787080
 perft 6 525678162
 
-id 1
+id 565
 epd rnbkn1rq/ppppppb1/6p1/7p/2B2P2/1P2P3/P1PP2PP/RNBKN1RQ w GAga - 1 9
 perft 1 28
 perft 2 799
@@ -5094,7 +5095,7 @@ perft 4 689436
 perft 5 20755098
 perft 6 639632905
 
-id 1
+id 566
 epd rn1knrqb/p2pppp1/b1p5/1p5p/2P2P2/1P6/P2PP1PP/RNBKNRQB w FAfa - 1 9
 perft 1 30
 perft 2 579
@@ -5103,7 +5104,7 @@ perft 4 397545
 perft 5 13257198
 perft 6 311282465
 
-id 1
+id 567
 epd rbnkbnrq/pp2p1Np/2p2p2/8/3p4/8/PPPPPPPP/RBNKBR1Q w Aga - 0 9
 perft 1 23
 perft 2 670
@@ -5112,7 +5113,7 @@ perft 4 501883
 perft 5 13012378
 perft 6 411860744
 
-id 1
+id 568
 epd rk1bbnrq/ppp1pppp/n7/3p4/5P2/3P2NP/PPP1P1P1/RNKBB1RQ w GA - 0 9
 perft 1 26
 perft 2 597
@@ -5121,7 +5122,7 @@ perft 4 402506
 perft 5 11269462
 perft 6 296701249
 
-id 1
+id 569
 epd r1knbbrq/pppp2p1/2n1p2p/5p2/4P3/P1PP4/1P3PPP/RNKNBBRQ w GAga - 1 9
 perft 1 20
 perft 2 596
@@ -5130,7 +5131,7 @@ perft 4 399069
 perft 5 9416862
 perft 6 293659781
 
-id 1
+id 570
 epd rnknbrqb/p1p1pp1p/3p4/1p1N2p1/8/N7/PPPPPPPP/1RK1BRQB w Ffa - 0 9
 perft 1 26
 perft 2 724
@@ -5139,7 +5140,7 @@ perft 4 552040
 perft 5 15257204
 perft 6 461293885
 
-id 1
+id 571
 epd rbnknrb1/1p1ppp1p/p1p3p1/8/1P3P2/1R6/PqPPP1PP/RBNKN1BQ w Afa - 0 9
 perft 1 31
 perft 2 1183
@@ -5148,7 +5149,7 @@ perft 4 1289502
 perft 5 38722152
 perft 6 1421492227
 
-id 1
+id 572
 epd rnkbnrbq/2p1ppp1/p7/1p1p3p/3P4/1P4P1/P1P1PP1P/RNKBNRBQ w FAfa - 0 9
 perft 1 24
 perft 2 506
@@ -5157,7 +5158,7 @@ perft 4 301464
 perft 5 8086100
 perft 6 207129256
 
-id 1
+id 573
 epd r1knrbbq/pp1ppppp/2p1n3/8/2P3P1/P7/1PKPPP1P/RN1NRBBQ w ea - 0 9
 perft 1 28
 perft 2 570
@@ -5166,7 +5167,7 @@ perft 4 352471
 perft 5 10278695
 perft 6 242592363
 
-id 1
+id 574
 epd rnknrq1b/ppp1p1p1/4b3/3p1p1p/6P1/P4P2/1PPPPQ1P/RNKNR1BB w EAea - 2 9
 perft 1 30
 perft 2 739
@@ -5175,7 +5176,7 @@ perft 4 594962
 perft 5 19252739
 perft 6 521629794
 
-id 1
+id 575
 epd bbqr1krn/pppp1p1p/5n2/4p1p1/3P4/P3QP2/1PP1P1PP/BB1RNKRN w GDgd - 0 9
 perft 1 31
 perft 2 799
@@ -5184,7 +5185,7 @@ perft 4 674913
 perft 5 22172123
 perft 6 609277274
 
-id 1
+id 576
 epd bq1b1krn/pp1ppppp/3n4/2r5/3p3N/6N1/PPP1PPPP/BQRB1KR1 w GCg - 2 9
 perft 1 21
 perft 2 798
@@ -5193,7 +5194,7 @@ perft 4 688429
 perft 5 17546069
 perft 6 647165916
 
-id 1
+id 577
 epd bqrnkbrn/2pp1pp1/p7/1p2p2p/1P6/4N3/P1PPPPPP/BQR1KBRN w GCgc - 0 9
 perft 1 27
 perft 2 783
@@ -5202,7 +5203,7 @@ perft 4 670798
 perft 5 20059741
 perft 6 624462073
 
-id 1
+id 578
 epd bqr1krnb/1np1pppp/8/pp1p4/8/2P2N2/PP1PPPPP/BQRNKR1B w FCfc - 0 9
 perft 1 28
 perft 2 636
@@ -5211,7 +5212,7 @@ perft 4 461104
 perft 5 14237097
 perft 6 372181570
 
-id 1
+id 579
 epd qbb1rkrn/1ppppppp/p7/7n/8/P2P4/1PP1PPPP/QBBRNKRN w Gg - 0 9
 perft 1 25
 perft 2 547
@@ -5220,7 +5221,7 @@ perft 4 332918
 perft 5 8849383
 perft 6 229112926
 
-id 1
+id 580
 epd 1rbbnkrn/p1p1pp1p/2q5/1p1p2p1/8/2P3P1/PP1PPP1P/QRBBNKRN w GBgb - 2 9
 perft 1 24
 perft 2 1010
@@ -5229,7 +5230,7 @@ perft 4 983770
 perft 5 24328258
 perft 6 961371180
 
-id 1
+id 581
 epd qrb1kbrn/ppp1p2p/4npp1/3p4/8/1PP4P/PR1PPPP1/Q1BNKBRN w Ggb - 1 9
 perft 1 18
 perft 2 451
@@ -5238,7 +5239,7 @@ perft 4 247310
 perft 5 5568106
 perft 6 155744022
 
-id 1
+id 582
 epd qr2krnb/p1p1pppp/b1np4/1p6/3NP3/7P/PPPP1PP1/QRBNKR1B w FBfb - 2 9
 perft 1 25
 perft 2 667
@@ -5247,7 +5248,7 @@ perft 4 476030
 perft 5 12458875
 perft 6 361495148
 
-id 1
+id 583
 epd qbrnbkrn/ppp3pp/3p4/5p2/2P1pP2/6PP/PP1PP3/QBRNBKRN w GCgc - 0 9
 perft 1 24
 perft 2 650
@@ -5256,7 +5257,7 @@ perft 4 445263
 perft 5 12187382
 perft 6 326834539
 
-id 1
+id 584
 epd qrnb1krn/ppp1p1pp/5p2/2Np4/b2P4/2P5/PP2PPPP/QR1BBKRN w GBgb - 0 9
 perft 1 27
 perft 2 641
@@ -5265,7 +5266,7 @@ perft 4 432041
 perft 5 12103076
 perft 6 310695797
 
-id 1
+id 585
 epd qrnkbbrn/pp2pp2/8/2pp2pp/6PP/3P4/PPPKPP2/QRN1BBRN w gb - 0 9
 perft 1 22
 perft 2 554
@@ -5274,7 +5275,7 @@ perft 4 357404
 perft 5 9014737
 perft 6 258925091
 
-id 1
+id 586
 epd qrnkbrnb/p1p1ppp1/1p6/3p4/3P3p/5N1P/PPP1PPP1/QRNKBR1B w FBfb - 0 9
 perft 1 24
 perft 2 529
@@ -5283,7 +5284,7 @@ perft 4 318722
 perft 5 8295874
 perft 6 213856651
 
-id 1
+id 587
 epd qbr1krbn/1pppp1pp/p7/5pn1/2PP4/8/PPB1PPPP/Q1RNKRBN w FCfc - 0 9
 perft 1 26
 perft 2 831
@@ -5292,7 +5293,7 @@ perft 4 696830
 perft 5 18961456
 perft 6 621884383
 
-id 1
+id 588
 epd 1rnbkrbn/1qp1pppp/3p4/pp6/4P3/1NP4P/PP1P1PP1/QR1BKRBN w FBfb - 0 9
 perft 1 24
 perft 2 597
@@ -5301,7 +5302,7 @@ perft 4 404761
 perft 5 10832084
 perft 6 307793179
 
-id 1
+id 589
 epd q1rkrbbn/ppp1pppp/8/3p4/1PnP4/P7/1RP1PPPP/Q1NKRBBN w Ee - 1 9
 perft 1 20
 perft 2 520
@@ -5310,7 +5311,7 @@ perft 4 278067
 perft 5 6452205
 perft 6 170268300
 
-id 1
+id 590
 epd qrnkrn1b/ppppp1pp/4b3/7P/6p1/P7/1PPPPP2/QRNKRNBB w EBeb - 0 9
 perft 1 26
 perft 2 566
@@ -5319,7 +5320,7 @@ perft 4 381312
 perft 5 10940750
 perft 6 287987207
 
-id 1
+id 591
 epd bbr1nkrn/ppp1pppp/3q4/3p4/8/P7/1PPPPPPP/BBRQNRKN w gc - 5 9
 perft 1 19
 perft 2 661
@@ -5328,7 +5329,7 @@ perft 4 460396
 perft 5 10870247
 perft 6 356399665
 
-id 1
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 epd brqbnkrn/pp1pp2p/5pp1/2p5/4P3/P2P1N2/1PP2PPP/BRQB1KRN w GBgb - 0 9
 perft 1 27
 perft 2 679
@@ -5337,7 +5338,7 @@ perft 4 527306
 perft 5 16391730
 perft 6 455940859
 
-id 1
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 epd 2qnkbrn/p1pppppp/8/1r6/1p2bP2/7N/PPPPP1PP/BR1QKBRN w GBg - 4 9
 perft 1 18
 perft 2 774
@@ -5346,7 +5347,7 @@ perft 4 635461
 perft 5 14371755
 perft 6 559579332
 
-id 1
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 epd r1qnkr1b/p1pppppp/7n/1p6/8/1P3b1N/PRPPPPPP/B1QNK1RB w f - 5 9
 perft 1 21
 perft 2 677
@@ -5355,7 +5356,7 @@ perft 4 501520
 perft 5 12463801
 perft 6 410795298
 
-id 1
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 epd rbbqn1rn/pppp1pp1/3k4/4p2Q/2PPP3/8/PP3PPP/RBB1NKRN w GA - 1 9
 perft 1 40
 perft 2 742
@@ -5364,7 +5365,7 @@ perft 4 579833
 perft 5 21852196
 perft 6 471452088
 
-id 1
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 epd rqbbnkrn/3pppp1/p1p4p/1p6/5P2/P2N4/1PPPP1PP/RQBBK1RN w ga - 0 9
 perft 1 23
 perft 2 665
@@ -5373,7 +5374,7 @@ perft 4 492544
 perft 5 12794736
 perft 6 396640086
 
-id 1
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 epd r2nkbrn/pp2pppp/8/2ppqb2/2P3P1/5P2/PP1PPN1P/RQB1KBRN w GAga - 3 9
 perft 1 28
 perft 2 1108
@@ -5382,7 +5383,7 @@ perft 4 1194581
 perft 5 34780853
 perft 6 1292405738
 
-id 1
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 epd rqbnk1nb/p1pppr1p/5p2/1p4p1/1PP1P3/8/P2P1PPP/RQBNKRNB w FAa - 1 9
 perft 1 26
 perft 2 650
@@ -5391,7 +5392,7 @@ perft 4 491403
 perft 5 14565370
 perft 6 416833400
 
-id 1
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 epd rbqnb1rn/p1pp1kpp/1p2pp2/8/4P2P/P5P1/1PPP1P2/RBQNBKRN w GA - 0 9
 perft 1 20
 perft 2 437
@@ -5400,7 +5401,7 @@ perft 4 222154
 perft 5 5282124
 perft 6 132309824
 
-id 1
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 epd rqnbbkrn/p1p1pppp/3p4/1p5B/8/1P1NP3/P1PP1PPP/RQ2BKRN w GAga - 0 9
 perft 1 30
 perft 2 606
@@ -5409,7 +5410,7 @@ perft 4 422491
 perft 5 12989786
 perft 6 326601372
 
-id 1
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 epd rqnkbbr1/ppppp1pp/5p2/7n/8/2PNP2P/PP1P1PP1/RQ1KBBRN w GAga - 1 9
 perft 1 23
 perft 2 482
@@ -5418,7 +5419,7 @@ perft 4 297869
 perft 5 8430874
 perft 6 217797292
 
-id 1
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 epd r1nkbrnb/2ppppp1/1q6/pp5p/1P6/P3P3/2PPKPPP/RQN1BRNB w fa - 2 9
 perft 1 25
 perft 2 827
@@ -5427,7 +5428,7 @@ perft 4 701071
 perft 5 19290675
 perft 6 632892337
 
-id 1
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 epd rbqnkrbn/p1ppppp1/7p/1p6/7P/2N1P3/PPPP1PPB/RBQ1KR1N w FAfa - 1 9
 perft 1 30
 perft 2 627
@@ -5436,7 +5437,7 @@ perft 4 440217
 perft 5 12976682
 perft 6 337377291
 
-id 1
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 epd r1nbkrbn/p1qp1ppp/8/1pp1p3/2P1P3/6P1/PP1PBP1P/RQN1KRBN w FAfa - 2 9
 perft 1 22
 perft 2 616
@@ -5445,7 +5446,7 @@ perft 4 431199
 perft 5 10850952
 perft 6 335943324
 
-id 1
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 epd rqnkr1bn/ppp1ppb1/3p2pp/8/P7/2P2P2/1PKPP1PP/RQN1RBBN w ea - 1 9
 perft 1 31
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@@ -5454,7 +5455,7 @@ perft 4 493500
 perft 5 15661072
 perft 6 379844460
 
-id 1
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 epd r2krnbb/qppp1ppp/1n6/p3p3/PP6/4N3/N1PPPPPP/RQ1KR1BB w EAea - 4 9
 perft 1 24
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@@ -5463,7 +5464,7 @@ perft 4 487028
 perft 5 13837270
 perft 6 416239106
 
-id 1
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 epd bbr1qk1n/1ppppp1p/2n5/p7/P7/1P2P3/2PP1PrP/1BRNQKRN w GCc - 0 9
 perft 1 18
 perft 2 520
@@ -5472,7 +5473,7 @@ perft 4 304462
 perft 5 7215306
 perft 6 207612575
 
-id 1
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 perft 1 21
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@@ -5481,7 +5482,7 @@ perft 4 419667
 perft 5 9929336
 perft 6 300902534
 
-id 1
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 epd brn1kbrn/pp2p1pp/3p4/q1p2p2/2P4P/6P1/PP1PPP2/BRNQKBRN w GBgb - 1 9
 perft 1 18
 perft 2 477
@@ -5490,7 +5491,7 @@ perft 4 273925
 perft 5 6720181
 perft 6 187205941
 
-id 1
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 epd brn1krnb/p3pppp/1qpp4/1p6/2P3P1/1P6/P2PPP1P/BRNQKRNB w FBfb - 1 9
 perft 1 30
 perft 2 835
@@ -5499,7 +5500,7 @@ perft 4 716151
 perft 5 21806428
 perft 6 654487872
 
-id 1
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 epd r1b1qkrn/1p1ppppp/p1p1n3/8/4P3/1PN5/P1PPQPPb/RBB2KRN w GAga - 0 9
 perft 1 28
 perft 2 825
@@ -5508,7 +5509,7 @@ perft 4 716585
 perft 5 22079005
 perft 6 647939781
 
-id 1
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 epd r1bbqk1n/p1pppprp/n7/1p4p1/5P2/2N3N1/PPPPP1PP/1RBBQKR1 w Ga - 4 9
 perft 1 25
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@@ -5517,7 +5518,7 @@ perft 4 358854
 perft 5 10271111
 perft 6 273864588
 
-id 1
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 epd rnbqkbrn/p1pp1pp1/4p3/7p/2p4P/2P5/PP1PPPP1/R1BQKBRN w GAga - 0 9
 perft 1 17
 perft 2 445
@@ -5526,7 +5527,7 @@ perft 4 255098
 perft 5 5918310
 perft 6 174733195
 
-id 1
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 epd rnbqkrnb/1p1pp1p1/2p4p/p4p2/3P2P1/7N/PPPBPP1P/RN1QKR1B w FAfa - 0 9
 perft 1 34
 perft 2 746
@@ -5535,7 +5536,7 @@ perft 4 623133
 perft 5 21285553
 perft 6 569141201
 
-id 1
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 epd rbnqbkr1/1ppppp2/p5n1/6pp/4P3/1N6/PPPP1PPP/RBQ1BRKN w ga - 2 9
 perft 1 18
 perft 2 466
@@ -5544,7 +5545,7 @@ perft 4 260864
 perft 5 6051500
 perft 6 170135726
 
-id 1
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 epd rnqb1krn/ppppp1p1/7p/7b/P1P2pPP/8/1P1PPP2/RNQBBKRN w GAga - 0 9
 perft 1 24
 perft 2 575
@@ -5553,7 +5554,7 @@ perft 4 385825
 perft 5 11039042
 perft 6 291243811
 
-id 1
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 epd rnqkbbr1/p1pp1ppp/4p3/1p6/P3P2n/5P2/1PPP1NPP/RNQKBBR1 w GAga - 2 9
 perft 1 27
 perft 2 803
@@ -5562,7 +5563,7 @@ perft 4 694449
 perft 5 20666099
 perft 6 638696065
 
-id 1
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 epd rn1kbrnb/1qppp1pp/1p6/p4p2/1B1P4/1P5N/P1P1PPPP/RNQK1R1B w FAfa - 0 9
 perft 1 37
 perft 2 1209
@@ -5571,7 +5572,7 @@ perft 4 1425600
 perft 5 49748034
 perft 6 1671593862
 
-id 1
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 epd rbnqkrbn/Bppp1p2/p5pp/4p3/5P2/6PP/PPPPP3/RBNQKR1N w FAfa - 0 9
 perft 1 29
 perft 2 720
@@ -5580,7 +5581,7 @@ perft 4 534148
 perft 5 15384362
 perft 6 421343249
 
-id 1
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 epd rnqbkr1n/1p1ppbpp/3p1p2/p7/8/1P6/P1PPPPPP/R1QBKRBN w FAfa - 0 9
 perft 1 20
 perft 2 657
@@ -5589,7 +5590,7 @@ perft 4 492678
 perft 5 11843134
 perft 6 413965054
 
-id 1
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 epd rnqkrb1n/ppppp3/6p1/5p1p/2b2P2/P1N5/1PPPP1PP/RQ1KRBBN w EAea - 1 9
 perft 1 28
 perft 2 749
@@ -5598,7 +5599,7 @@ perft 4 543151
 perft 5 15379233
 perft 6 417191461
 
-id 1
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 epd rnqk1nbb/1pp2ppp/3pr3/p3p3/3P1P2/2N3N1/PPP1P1PP/R1QKR1BB w EAa - 1 9
 perft 1 29
 perft 2 883
@@ -5607,7 +5608,7 @@ perft 4 815098
 perft 5 25144295
 perft 6 789705382
 
-id 1
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 epd bbr1kqrn/p1p1ppp1/1p2n2p/3p4/1P1P4/2N5/P1P1PPPP/BBR1KQRN w GCgc - 0 9
 perft 1 22
 perft 2 485
@@ -5616,7 +5617,7 @@ perft 4 271271
 perft 5 6825123
 perft 6 171793012
 
-id 1
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 epd brnbkq1n/ppp1ppr1/7p/3p2p1/2P3PP/8/PPBPPP2/BRN1KQRN w GBb - 2 9
 perft 1 30
 perft 2 634
@@ -5625,7 +5626,7 @@ perft 4 442537
 perft 5 13674310
 perft 6 345386924
 
-id 1
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 epd brnkqbr1/1pppp1pp/5p2/p7/P1P1P2n/8/1P1P1PP1/BRNKQBRN w GBgb - 0 9
 perft 1 21
 perft 2 504
@@ -5634,7 +5635,7 @@ perft 4 305184
 perft 5 7778289
 perft 6 217596497
 
-id 1
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 epd b1rkqrnb/p1ppp1pp/1p1n4/5p2/5P2/PN5P/1PPPP1P1/BR1KQRNB w FBf - 0 9
 perft 1 23
 perft 2 688
@@ -5643,7 +5644,7 @@ perft 4 531592
 perft 5 14228372
 perft 6 451842354
 
-id 1
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 epd 1bbnkqrn/rppppp2/p5p1/7p/7P/P1P1P3/1P1P1PP1/RBBNKQRN w GAg - 1 9
 perft 1 25
 perft 2 450
@@ -5652,7 +5653,7 @@ perft 4 263946
 perft 5 7752404
 perft 6 185393913
 
-id 1
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 epd rnbbkqr1/1pppppp1/7p/p3n3/PP5P/8/1BPPPPP1/RN1BKQRN w GAga - 0 9
 perft 1 23
 perft 2 543
@@ -5661,7 +5662,7 @@ perft 4 305812
 perft 5 7549008
 perft 6 199883770
 
-id 1
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 epd r1bkqbrn/ppppp1pp/8/5p2/3nPP2/1P4N1/P1PP2PP/RNBKQBR1 w GAga - 1 9
 perft 1 27
 perft 2 751
@@ -5670,7 +5671,7 @@ perft 4 600417
 perft 5 17989920
 perft 6 527273615
 
-id 1
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 epd rnbkqr1b/1p1pp1pp/p4p1n/2p5/1P5P/N4P2/P1PPP1P1/R1BKQRNB w FAfa - 0 9
 perft 1 21
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@@ -5679,7 +5680,7 @@ perft 4 302278
 perft 5 7808375
 perft 6 216224115
 
-id 1
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 epd rbnkbqrn/p1p3pp/1p1p4/B3pp2/3P2P1/6N1/PPP1PP1P/RBNK1QR1 w GAga - 0 9
 perft 1 34
 perft 2 977
@@ -5688,7 +5689,7 @@ perft 4 961128
 perft 5 33318567
 perft 6 978991050
 
-id 1
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 epd r1kbbqrn/ppp3pp/2np1p2/1P2p3/3P1P2/8/P1P1P1PP/RNKBBQRN w GAga - 0 9
 perft 1 32
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@@ -5697,7 +5698,7 @@ perft 4 844881
 perft 5 26763259
 perft 6 797524786
 
-id 1
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 epd rk1qbbrn/p2npppp/1p6/2p4Q/8/4P3/PPPP1PPP/RNK1B1RN w GA - 2 9
 perft 1 35
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@@ -5706,7 +5707,7 @@ perft 4 495406
 perft 5 16662477
 perft 6 419496845
 
-id 1
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 epd rnk1brnb/pp1p1pp1/8/q1p1p2p/5P2/NP6/P1PPP1PP/R1KQBRNB w FAfa - 1 9
 perft 1 26
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@@ -5715,7 +5716,7 @@ perft 4 610661
 perft 5 16987110
 perft 6 523437649
 
-id 1
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 epd rb1kqrbn/npp1ppp1/p7/3P3p/2PP4/8/PP3PPP/RBNKQRBN w FAfa - 0 9
 perft 1 35
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@@ -5724,7 +5725,7 @@ perft 4 661118
 perft 5 23983464
 perft 6 625669222
 
-id 1
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 epd rnkb1rbn/pp1p2pp/8/2p1pp1q/P6P/1PN5/2PPPPP1/R1KBQRBN w FAfa - 1 9
 perft 1 22
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@@ -5733,7 +5734,7 @@ perft 4 850597
 perft 5 21518343
 perft 6 857951339
 
-id 1
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 epd rnkqrbbn/1pppp1p1/8/p2N1p1p/2P4P/8/PP1PPPP1/R1KQRBBN w EAea - 0 9
 perft 1 29
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@@ -5742,7 +5743,7 @@ perft 4 393221
 perft 5 12238776
 perft 6 299752383
 
-id 1
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 epd rnk1r1bb/pp1ppppp/1q4n1/2p5/5P1P/3PP3/PPP3P1/RNKQRNBB w EAea - 1 9
 perft 1 27
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@@ -5751,7 +5752,7 @@ perft 4 811915
 perft 5 23698701
 perft 6 790239502
 
-id 1
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 epd bbrnkrqn/1ppp1p2/6pp/p3p3/5PP1/2PB4/PP1PP2P/B1RNKRQN w FCfc - 0 9
 perft 1 37
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@@ -5760,7 +5761,7 @@ perft 4 550527
 perft 5 20138432
 perft 6 481498664
 
-id 1
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 epd b1rbkrqn/ppp2ppp/1n2p3/3p4/6P1/2PP4/PP2PP1P/BRNBKRQN w FBf - 1 9
 perft 1 21
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@@ -5769,7 +5770,7 @@ perft 4 253204
 perft 5 6307276
 perft 6 159025909
 
-id 1
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 epd brnkrb1n/1pp1p1pp/3p4/p1Nq1p2/2P5/8/PP1PPPPP/BRK1RBQN w eb - 2 9
 perft 1 27
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@@ -5778,7 +5779,7 @@ perft 4 496072
 perft 5 12604078
 perft 6 362747791
 
-id 1
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 epd brn1r1nb/ppppkppp/4p3/8/2PP1P2/8/PP1KP1PP/BRN1RQNB w - - 1 9
 perft 1 25
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@@ -5787,7 +5788,7 @@ perft 4 426659
 perft 5 12290985
 perft 6 317097424
 
-id 1
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 epd rbb1krqn/1pp1pp1p/p3n1p1/3pP3/8/1PN5/P1PP1PPP/RBB1KRQN w FAfa d6 0 9
 perft 1 23
 perft 2 529
@@ -5796,7 +5797,7 @@ perft 4 310277
 perft 5 7861413
 perft 6 202594556
 
-id 1
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 epd r1bbkrqn/p1pppppp/8/4n3/1p5P/P2P2P1/1PP1PP2/RNBBKRQN w FAfa - 0 9
 perft 1 23
 perft 2 571
@@ -5805,7 +5806,7 @@ perft 4 346793
 perft 5 8699448
 perft 6 243460643
 
-id 1
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 epd rnbkrbqn/p1pp1ppp/4p3/1p6/8/BPN3P1/P1PPPP1P/R2KRBQN w EAea - 2 9
 perft 1 29
 perft 2 692
@@ -5814,7 +5815,7 @@ perft 4 500375
 perft 5 14904192
 perft 6 386694739
 
-id 1
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 epd rnbkrqn1/pppppp2/8/1Q2b1pp/P3P3/5P2/1PPP2PP/RNBKR1NB w EAea - 0 9
 perft 1 37
 perft 2 1001
@@ -5823,7 +5824,7 @@ perft 4 987842
 perft 5 35626426
 perft 6 993747544
 
-id 1
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 epd rbnkbrqn/p1pppp2/7p/1p4pP/3P1P2/8/PPP1P1P1/RBNKBRQN w FAfa - 0 9
 perft 1 30
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@@ -5832,7 +5833,7 @@ perft 4 381364
 perft 5 11859538
 perft 6 293703269
 
-id 1
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 epd 1nkbbrqn/3ppppp/r1p5/pp6/8/4PP2/PPPPN1PP/RNKBBRQ1 w FAf - 2 9
 perft 1 26
 perft 2 546
@@ -5841,7 +5842,7 @@ perft 4 344592
 perft 5 9556962
 perft 6 245137199
 
-id 1
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 epd rnkrbbq1/pppppnp1/7p/8/1B1Q1p2/3P1P2/PPP1P1PP/RNKR1B1N w DAda - 2 9
 perft 1 43
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@@ -5850,7 +5851,7 @@ perft 4 846858
 perft 5 33185346
 perft 6 851927292
 
-id 1
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 epd 1rkrbqnb/pppppp2/2n3p1/7p/3P3P/P4N2/1PP1PPP1/RNKRBQ1B w DAd - 0 9
 perft 1 26
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@@ -5859,7 +5860,7 @@ perft 4 403921
 perft 5 10786140
 perft 6 285233838
 
-id 1
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 epd rbnkr1bn/pp1pqp1p/2p1p3/6p1/3P4/7P/PPP1PPP1/RBNKRQBN w EAea - 0 9
 perft 1 19
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@@ -5868,7 +5869,7 @@ perft 4 381197
 perft 5 9107175
 perft 6 293397389
 
-id 1
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 epd r1kbrqb1/pppp2pp/2n1p1n1/5p1B/4PP2/P7/1PPP2PP/RNK1RQBN w EAea - 2 9
 perft 1 39
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@@ -5877,7 +5878,7 @@ perft 4 1876028
 perft 5 73871486
 perft 6 2633945690
 
-id 1
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 epd rnkrqbbn/p1p3pp/1p1ppp2/8/1P6/3P2P1/PKP1PP1P/RN1RQBBN w da - 0 9
 perft 1 26
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@@ -5886,7 +5887,7 @@ perft 4 611907
 perft 5 16884013
 perft 6 503561996
 
-id 1
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 epd rnkrqnbb/ppp2p1p/3p4/4p1p1/3P3P/N1Q5/PPP1PPP1/R1KR1NBB w DAda - 0 9
 perft 1 40
 perft 2 1175
@@ -5895,7 +5896,7 @@ perft 4 1375884
 perft 5 52620163
 perft 6 1633655838
 
-id 1
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 epd bbrnkrn1/p1pppp2/1p6/6pp/3q4/1P3QP1/P1PPPP1P/BBRNKRN1 w FCfc - 0 9
 perft 1 34
 perft 2 1398
@@ -5904,7 +5905,7 @@ perft 4 1712950
 perft 5 57268492
 perft 6 2059942014
 
-id 1
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 epd br1bkrnq/1p2pppp/pnp5/3p4/P1P5/5P2/1P1PPKPP/BRNB1RNQ w fb - 2 9
 perft 1 24
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@@ -5913,7 +5914,7 @@ perft 4 284936
 perft 5 7049659
 perft 6 177940764
 
-id 1
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 epd brnkrbn1/pppppp1q/B6p/6p1/8/1P2PP2/P1PP2PP/BRNKR1NQ w EBeb - 0 9
 perft 1 34
 perft 2 815
@@ -5922,7 +5923,7 @@ perft 4 700970
 perft 5 22006883
 perft 6 639803952
 
-id 1
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 epd br1krnqb/pppppp1p/1n4p1/8/8/P2NN3/2PPPPPP/BR1K1RQB w Beb - 2 9
 perft 1 37
 perft 2 1029
@@ -5931,7 +5932,7 @@ perft 4 1025712
 perft 5 36214583
 perft 6 1026195877
 
-id 1
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 epd rbbnkr1q/p1p2ppp/1p1ppn2/8/1PP4P/8/P2PPPP1/RBBNKRNQ w FAfa - 0 9
 perft 1 28
 perft 2 755
@@ -5940,7 +5941,7 @@ perft 4 605106
 perft 5 18972778
 perft 6 513486101
 
-id 1
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 epd r1b1krnq/pp2pppp/1bn5/2pp4/4N3/5P2/PPPPPRPP/R1BBK1NQ w Afa - 0 9
 perft 1 24
 perft 2 705
@@ -5949,7 +5950,7 @@ perft 4 532521
 perft 5 13532966
 perft 6 426443376
 
-id 1
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 epd 1nbkrbn1/rpppppqp/p7/6p1/4P3/3P2P1/PPP1KP1P/RNB1RBNQ w e - 1 9
 perft 1 31
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@@ -5958,7 +5959,7 @@ perft 4 693366
 perft 5 21193292
 perft 6 625757852
 
-id 1
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 epd r1bkrnqb/pp3ppp/n1ppp3/8/1P5P/P7/R1PPPPP1/1NBKRNQB w Eea - 0 9
 perft 1 21
 perft 2 482
@@ -5967,7 +5968,7 @@ perft 4 275339
 perft 5 7112890
 perft 6 180378139
 
-id 1
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 epd rbnkbrnq/ppp1p2p/5p2/3p2p1/1B1P4/1N4P1/PPP1PP1P/RB1K1RNQ w FAfa - 0 9
 perft 1 33
 perft 2 780
@@ -5976,7 +5977,7 @@ perft 4 628945
 perft 5 20756770
 perft 6 535497008
 
-id 1
+id 664
 epd rnk1brnq/pp1ppppp/2p5/b7/8/1P2P2P/P1PP1PPQ/RNKBBRN1 w FAfa - 3 9
 perft 1 29
 perft 2 648
@@ -5985,7 +5986,7 @@ perft 4 449637
 perft 5 13722785
 perft 6 341389148
 
-id 1
+id 665
 epd rnkrbbnq/p1p3pp/5p2/1p1pp3/P7/1PN2P2/2PPP1PP/R1KRBBNQ w DAda - 0 9
 perft 1 26
 perft 2 827
@@ -5994,7 +5995,7 @@ perft 4 683167
 perft 5 18916370
 perft 6 589161126
 
-id 1
+id 666
 epd r1krbnqb/p1pp1ppp/2n1p3/8/1p4P1/PPP5/3PPP1P/RNKRBNQB w DAda - 1 9
 perft 1 25
 perft 2 540
@@ -6003,7 +6004,7 @@ perft 4 331332
 perft 5 9491817
 perft 6 225389422
 
-id 1
+id 667
 epd rbnkrnbq/ppp1pp2/3p2p1/2N5/P6p/2P5/1P1PPPPP/RB1KRNBQ w EAea - 0 9
 perft 1 32
 perft 2 790
@@ -6012,7 +6013,7 @@ perft 4 661207
 perft 5 20906017
 perft 6 578332225
 
-id 1
+id 668
 epd rnkbrn1q/1ppppppb/8/p4N1p/8/P1N5/1PPPPPPP/R1KBR1BQ w EAea - 0 9
 perft 1 31
 perft 2 691
@@ -6021,7 +6022,7 @@ perft 4 510665
 perft 5 15308408
 perft 6 404129987
 
-id 1
+id 669
 epd rnkrnbbq/p1p2ppp/3pp3/1p6/6P1/4PQ1B/PPPP1P1P/RNKRN1B1 w DAda - 0 9
 perft 1 29
 perft 2 558
@@ -6030,7 +6031,7 @@ perft 4 352887
 perft 5 10825379
 perft 6 246965507
 
-id 1
+id 670
 epd rnkrnqbb/pp2p1p1/3p3p/2p2p2/5P2/1P1N4/P1PPPQPP/RNKR2BB w DAda - 0 9
 perft 1 29
 perft 2 762
@@ -6039,7 +6040,7 @@ perft 4 644936
 perft 5 20522675
 perft 6 596067005
 
-id 1
+id 671
 epd bb1rknnr/ppqppppp/8/2p5/3P1N2/1P6/P1P1PPPP/BBQRKN1R w HDhd - 1 9
 perft 1 33
 perft 2 963
@@ -6048,7 +6049,7 @@ perft 4 1000890
 perft 5 34552118
 perft 6 1124738493
 
-id 1
+id 672
 epd bqrbknnr/ppp1p2p/8/3p1p2/5p2/P3N2P/1PPPP1P1/BQRBK1NR w HChc - 0 9
 perft 1 20
 perft 2 398
@@ -6057,7 +6058,7 @@ perft 4 194859
 perft 5 4834319
 perft 6 113660536
 
-id 1
+id 673
 epd b1rk1bnr/qpp1pppp/p4n2/3p4/3PPP2/7N/PPP3PP/BQRKNB1R w HChc - 1 9
 perft 1 25
 perft 2 648
@@ -6066,7 +6067,7 @@ perft 4 455720
 perft 5 12200870
 perft 6 351766307
 
-id 1
+id 674
 epd bqkrnnrb/pppp2p1/4pp2/4P2p/6P1/7P/PPPP1P2/BQRKNNRB w GC - 1 9
 perft 1 30
 perft 2 493
@@ -6075,7 +6076,7 @@ perft 4 280726
 perft 5 8786998
 perft 6 181492621
 
-id 1
+id 675
 epd q1brknnr/1p1ppppp/p7/2p5/8/1PPP4/P2RPPPP/QBB1KNNR w Hhd - 0 9
 perft 1 25
 perft 2 501
@@ -6084,7 +6085,7 @@ perft 4 290463
 perft 5 7982978
 perft 6 192717198
 
-id 1
+id 676
 epd qrb1k1nr/ppppb1pp/6n1/4ppN1/3P4/4N3/PPP1PPPP/QRBBK2R w HBhb - 2 9
 perft 1 31
 perft 2 872
@@ -6093,7 +6094,7 @@ perft 4 739276
 perft 5 22493014
 perft 6 646855304
 
-id 1
+id 677
 epd 1rbknbnr/1ppp1pp1/q6p/p3p3/5P2/2PPB3/PP2P1PP/QR1KNBNR w HBhb - 0 9
 perft 1 28
 perft 2 1020
@@ -6102,7 +6103,7 @@ perft 4 984000
 perft 5 27484692
 perft 6 947786800
 
-id 1
+id 678
 epd qrbk2rb/1ppp1ppp/5nn1/p3p3/1N6/P7/1PPPPPPP/QRB1KNRB w gb - 0 9
 perft 1 23
 perft 2 592
@@ -6111,7 +6112,7 @@ perft 4 395716
 perft 5 10098215
 perft 6 293988585
 
-id 1
+id 679
 epd qbrk1nnr/1pp1pppp/2b5/p2p4/P2P2P1/8/1PP1PP1P/QBKRBNNR w hc - 1 9
 perft 1 26
 perft 2 654
@@ -6120,7 +6121,7 @@ perft 4 471653
 perft 5 13740891
 perft 6 373081138
 
-id 1
+id 680
 epd qrkbbnnr/ppp2p1p/4p3/3p2p1/P7/2PP4/1P2PPPP/QRKBBNNR w HBhb - 0 9
 perft 1 25
 perft 2 626
@@ -6129,7 +6130,7 @@ perft 4 431634
 perft 5 12079406
 perft 6 324006164
 
-id 1
+id 681
 epd qr1kbbnr/ppp1pp1p/4n1p1/2Pp4/6P1/4N3/PP1PPP1P/QRK1BBNR w HB d6 0 9
 perft 1 26
 perft 2 699
@@ -6138,7 +6139,7 @@ perft 4 497152
 perft 5 13353359
 perft 6 375702908
 
-id 1
+id 682
 epd qrk1b1rb/p1pppppp/3nnQ2/1p6/1P3P2/3P4/P1P1P1PP/1RKNBNRB w GBgb - 3 9
 perft 1 43
 perft 2 1369
@@ -6147,7 +6148,7 @@ perft 4 1831200
 perft 5 71514365
 perft 6 2427477375
 
-id 1
+id 683
 epd qbrk1nbr/pppp3p/5n2/4ppp1/3P1P2/4N3/PPP1P1PP/QBKRN1BR w hc - 0 9
 perft 1 25
 perft 2 752
@@ -6156,7 +6157,7 @@ perft 4 615263
 perft 5 17493373
 perft 6 543180234
 
-id 1
+id 684
 epd qrkb1nbr/1pppppQp/3n4/p7/5p2/1P1N4/P1PPP1PP/1RKB1NBR w HBhb - 0 9
 perft 1 45
 perft 2 946
@@ -6165,7 +6166,7 @@ perft 4 966903
 perft 5 39736157
 perft 6 1051910977
 
-id 1
+id 685
 epd qrk1nbbr/ppp1p1p1/4n2p/3p1p2/1P5P/3P2P1/P1P1PP2/QRKNNBBR w HBhb - 1 9
 perft 1 32
 perft 2 770
@@ -6174,7 +6175,7 @@ perft 4 646977
 perft 5 21717615
 perft 6 577979364
 
-id 1
+id 686
 epd qrkn1rbb/pp2pppp/2p5/3p4/P2Qn1P1/1P6/2PPPP1P/1RKNNRBB w FBfb - 0 9
 perft 1 38
 perft 2 943
@@ -6183,7 +6184,7 @@ perft 4 868165
 perft 5 31909835
 perft 6 798405123
 
-id 1
+id 687
 epd bbrqknnr/ppp4p/3pp3/5pp1/4PP2/5Q2/PPPP2PP/BBR1KNNR w HChc - 0 9
 perft 1 36
 perft 2 843
@@ -6192,7 +6193,7 @@ perft 4 758528
 perft 5 26828059
 perft 6 723306114
 
-id 1
+id 688
 epd 1rqbkn1r/p1p1pppp/1p5n/P2p4/3Pb1P1/8/1PP1PP1P/BRQBKNNR w HBhb - 0 9
 perft 1 23
 perft 2 778
@@ -6201,7 +6202,7 @@ perft 4 649789
 perft 5 17337683
 perft 6 579112676
 
-id 1
+id 689
 epd br1knbnr/1qp1pppp/pp1p4/8/8/PP6/2PPPPPP/BRQKNBNR w HBhb - 2 9
 perft 1 26
 perft 2 697
@@ -6210,7 +6211,7 @@ perft 4 546622
 perft 5 15280079
 perft 6 473071890
 
-id 1
+id 690
 epd brqk2rb/ppppp1pp/4np2/8/2n5/3P1Q2/PP2PPPP/BR1KNNRB w GBgb - 0 9
 perft 1 32
 perft 2 948
@@ -6219,7 +6220,7 @@ perft 4 885713
 perft 5 29821322
 perft 6 874251866
 
-id 1
+id 691
 epd r1bqknnr/pp1pp1p1/5p1p/2p1b2N/2P5/8/PPQPPPPP/RBB1K1NR w HAha - 0 9
 perft 1 31
 perft 2 785
@@ -6228,7 +6229,7 @@ perft 4 659952
 perft 5 22244193
 perft 6 592797491
 
-id 1
+id 692
 epd rqbbknnr/ppppp2p/5pp1/8/8/1P3PP1/PQPPP2P/R1BBKNNR w HAha - 0 9
 perft 1 23
 perft 2 391
@@ -6237,7 +6238,7 @@ perft 4 198450
 perft 5 5576671
 perft 6 121267576
 
-id 1
+id 693
 epd rqbknbnr/1pp1p2p/p7/3p1pp1/7N/1PP5/P2PPPPP/RQBK1BNR w HAha - 0 9
 perft 1 27
 perft 2 676
@@ -6246,7 +6247,7 @@ perft 4 522428
 perft 5 15955388
 perft 6 448477218
 
-id 1
+id 694
 epd rqb1nnrb/2ppkppp/1p2p3/p7/2PPP3/1P6/P4PPP/RQBKNNRB w GA - 1 9
 perft 1 31
 perft 2 727
@@ -6255,7 +6256,7 @@ perft 4 570647
 perft 5 18361051
 perft 6 483248153
 
-id 1
+id 695
 epd rb1kbn1r/p1ppppp1/qp5n/7p/P7/RPP5/3PPPPP/1BQKBNNR w Hha - 2 9
 perft 1 29
 perft 2 837
@@ -6264,7 +6265,7 @@ perft 4 730083
 perft 5 21279560
 perft 6 682863811
 
-id 1
+id 696
 epd rqkbb1nr/p1p2ppp/1p1p2n1/3Np3/4P3/5N2/PPPP1PPP/RQKBB2R w HAha - 0 9
 perft 1 28
 perft 2 717
@@ -6273,7 +6274,7 @@ perft 4 550987
 perft 5 16347343
 perft 6 453153783
 
-id 1
+id 697
 epd rqknbbr1/p1pppp1p/1p3np1/8/4P3/2P2P1P/PP1P2P1/RQKNBBNR w HAa - 0 9
 perft 1 27
 perft 2 650
@@ -6282,7 +6283,7 @@ perft 4 475303
 perft 5 13847463
 perft 6 383256006
 
-id 1
+id 698
 epd r1k1bnrb/1qpppppp/1p2n3/p7/1P5P/6P1/P1PPPP2/RQKNBNR1 w GAga - 1 9
 perft 1 24
 perft 2 806
@@ -6291,7 +6292,7 @@ perft 4 713220
 perft 5 19382263
 perft 6 686009788
 
-id 1
+id 699
 epd rb1knnbr/1pp1ppp1/p2p3p/5q2/3B2P1/3P1P2/PPP1P2P/RBQKNN1R w HAha - 0 9
 perft 1 34
 perft 2 1360
@@ -6300,7 +6301,7 @@ perft 4 1605706
 perft 5 51973672
 perft 6 1837704407
 
-id 1
+id 700
 epd rqkb1nbr/p1p1ppp1/1p3n1p/2Qp4/8/2P5/PP1PPPPP/R1KBNNBR w HAha - 2 9
 perft 1 39
 perft 2 983
@@ -6309,7 +6310,7 @@ perft 4 940989
 perft 5 36347815
 perft 6 918801645
 
-id 1
+id 701
 epd rqknnbbr/2pppp2/pp5p/6p1/1P1P4/4PP2/P1P3PP/RQKNNBBR w HAha - 0 9
 perft 1 26
 perft 2 628
@@ -6318,7 +6319,7 @@ perft 4 464924
 perft 5 13787303
 perft 6 386125234
 
-id 1
+id 702
 epd rqkn1rbb/1pp1pppp/p7/3p4/3Pn3/2P1PP2/PP4PP/RQKNNRBB w FAfa - 1 9
 perft 1 20
 perft 2 527
@@ -6327,7 +6328,7 @@ perft 4 321533
 perft 5 8082183
 perft 6 219311659
 
-id 1
+id 703
 epd bbrkqn1r/1pppppp1/5n2/p7/1PP2P1p/7N/P2PP1PP/BBRKQN1R w HChc - 1 9
 perft 1 36
 perft 2 963
@@ -6336,7 +6337,7 @@ perft 4 973839
 perft 5 35907489
 perft 6 1034223364
 
-id 1
+id 704
 epd brkbqn1r/p2ppppp/7n/1p6/P1p3PP/8/1PPPPP1N/BRKBQ1NR w HBhb - 0 9
 perft 1 18
 perft 2 583
@@ -6345,7 +6346,7 @@ perft 4 394603
 perft 5 8858385
 perft 6 304339862
 
-id 1
+id 705
 epd brkq1bnr/pp1ppp1p/8/2p2np1/P7/8/1PPPPPPP/BRKQNBNR w HBhb - 0 9
 perft 1 19
 perft 2 552
@@ -6354,7 +6355,7 @@ perft 4 354260
 perft 5 8432183
 perft 6 262293169
 
-id 1
+id 706
 epd brkqnnrb/1ppppppp/8/8/p3P3/5N2/PPPP1PPP/BRKQ1NRB w GBgb - 3 9
 perft 1 21
 perft 2 397
@@ -6363,7 +6364,7 @@ perft 4 204350
 perft 5 5489836
 perft 6 128389738
 
-id 1
+id 707
 epd rbbkq1nr/1p2pppp/p1p3nB/3p4/1Q1P4/6N1/PPP1PPPP/RB1K2NR w HAha - 0 9
 perft 1 40
 perft 2 1132
@@ -6372,7 +6373,7 @@ perft 4 1260470
 perft 5 47425783
 perft 6 1415578783
 
-id 1
+id 708
 epd rkbbq1nr/1pppp1p1/4np2/p6p/8/PP3P2/1KPPP1PP/R1BBQNNR w ha - 0 9
 perft 1 24
 perft 2 596
@@ -6381,7 +6382,7 @@ perft 4 402121
 perft 5 10822049
 perft 6 302056813
 
-id 1
+id 709
 epd r1bqn1nr/pkpppp1p/1p4pb/8/PN6/R7/1PPPPPPP/1KBQ1BNR w H - 2 9
 perft 1 33
 perft 2 794
@@ -6390,7 +6391,7 @@ perft 4 649150
 perft 5 20919309
 perft 6 561073410
 
-id 1
+id 710
 epd rkb1nnrb/1pppq1pp/p4p2/4p3/5P2/1P1PB3/P1P1P1PP/RK1QNNRB w GAga - 0 9
 perft 1 26
 perft 2 625
@@ -6399,7 +6400,7 @@ perft 4 442036
 perft 5 12515042
 perft 6 342967558
 
-id 1
+id 711
 epd rbkqbn1r/pppp1p1p/2n1p1p1/8/8/1P1PP1N1/P1P2PPP/RBKQB1NR w HAha - 1 9
 perft 1 30
 perft 2 660
@@ -6408,7 +6409,7 @@ perft 4 492714
 perft 5 15348335
 perft 6 403323883
 
-id 1
+id 712
 epd rkqbb1n1/pppppppr/8/6np/5P2/8/PPPPP1PP/RKQBBNNR w HAa - 6 9
 perft 1 23
 perft 2 500
@@ -6417,7 +6418,7 @@ perft 4 292936
 perft 5 7519117
 perft 6 196524441
 
-id 1
+id 713
 epd rkqnbbnr/ppppppp1/8/7p/3N4/6PP/PPPPPP2/RKQNBB1R w HAa - 0 9
 perft 1 24
 perft 2 484
@@ -6426,7 +6427,7 @@ perft 4 284570
 perft 5 7775173
 perft 6 193947530
 
-id 1
+id 714
 epd rkqnb1rb/p1p1pppp/1p1p4/2n5/3P4/2P1N1N1/PP2PPPP/RKQ1B1RB w GAga - 0 9
 perft 1 28
 perft 2 1020
@@ -6435,7 +6436,7 @@ perft 4 1027904
 perft 5 30515456
 perft 6 1073711823
 
-id 1
+id 715
 epd rbk1nnbr/1ppq1ppp/p2p4/4p3/P3B2P/2P5/1P1PPPP1/R1KQNNBR w HAha - 2 9
 perft 1 38
 perft 2 998
@@ -6444,7 +6445,7 @@ perft 4 1047592
 perft 5 38552638
 perft 6 1139322479
 
-id 1
+id 716
 epd r1qbn1br/k1pppppp/6n1/pp6/5P1P/P7/1PPPP1PB/RKQBNN1R w HA - 1 9
 perft 1 22
 perft 2 549
@@ -6453,7 +6454,7 @@ perft 4 348574
 perft 5 8725809
 perft 6 251613569
 
-id 1
+id 717
 epd rkqnn1br/pppp3p/4p1pb/5p2/P2P4/7P/1PP1PPPB/RKQNNB1R w HAha - 1 9
 perft 1 32
 perft 2 659
@@ -6462,7 +6463,7 @@ perft 4 469701
 perft 5 15434721
 perft 6 365761521
 
-id 1
+id 718
 epd rk1nnrbb/p1p1pppp/1p6/3p1q2/P3P3/2NN4/1PPP1PPP/RKQ2RBB w FAfa - 3 9
 perft 1 29
 perft 2 989
@@ -6471,7 +6472,7 @@ perft 4 980477
 perft 5 29643404
 perft 6 998848556
 
-id 1
+id 719
 epd bbrk1q1r/ppppppp1/3n4/7p/3Pn3/6PN/PPP1PPNP/BBRK1Q1R w HChc - 2 9
 perft 1 23
 perft 2 712
@@ -6480,7 +6481,7 @@ perft 4 516177
 perft 5 12995202
 perft 6 411077508
 
-id 1
+id 720
 epd brkbnq1r/p1ppp2p/5ppn/1p6/5P2/1P1P2P1/P1P1P2P/BRKBNQNR w HBhb - 0 9
 perft 1 28
 perft 2 856
@@ -6489,7 +6490,7 @@ perft 4 780503
 perft 5 23529352
 perft 6 754501112
 
-id 1
+id 721
 epd br1k1bnr/ppppp1pp/4np2/1B2P2q/3P4/8/PPP2PPP/BRKNQ1NR w HB - 3 9
 perft 1 36
 perft 2 1214
@@ -6498,7 +6499,7 @@ perft 4 1328331
 perft 5 45096834
 perft 6 1470987023
 
-id 1
+id 722
 epd brk1qnrb/pnppp1p1/1p6/5p1p/8/5PPP/PPPPP1R1/BRKNQN1B w Bgb - 0 9
 perft 1 22
 perft 2 551
@@ -6507,7 +6508,7 @@ perft 4 353317
 perft 5 9040545
 perft 6 259643605
 
-id 1
+id 723
 epd rbbkn1nr/1ppp2pp/p3p3/2q2p2/3P4/6P1/PPPBPP1P/RB1KNQNR w HAha - 0 9
 perft 1 31
 perft 2 1060
@@ -6516,7 +6517,7 @@ perft 4 1015099
 perft 5 30314172
 perft 6 976268967
 
-id 1
+id 724
 epd rkbbn1nr/ppppp1pp/8/6N1/5p2/1q6/P1PPPPPP/RKBBN1QR w HAha - 0 9
 perft 1 3
 perft 2 72
@@ -6525,7 +6526,7 @@ perft 4 50827
 perft 5 1400832
 perft 6 39654253
 
-id 1
+id 725
 epd rkb2bnr/pp2pppp/2p1n3/3p4/q2P4/5NP1/PPP1PP1P/RKBNQBR1 w Aha - 0 9
 perft 1 29
 perft 2 861
@@ -6534,7 +6535,7 @@ perft 4 763454
 perft 5 22763215
 perft 6 731511256
 
-id 1
+id 726
 epd rkbq1nrb/ppppppp1/7p/8/1P1n4/P4P1P/2PPP1P1/RKBNQNRB w GAga - 0 9
 perft 1 25
 perft 2 672
@@ -6543,7 +6544,7 @@ perft 4 473864
 perft 5 12954224
 perft 6 361237536
 
-id 1
+id 727
 epd rbknb1nr/ppp1qp1p/6p1/3pp3/3P3P/2B1P3/PPP2PP1/RBKN1QNR w HAha - 1 9
 perft 1 27
 perft 2 857
@@ -6552,7 +6553,7 @@ perft 4 792538
 perft 5 23790033
 perft 6 768247869
 
-id 1
+id 728
 epd rknbbq1r/p1pppppp/1p2N3/8/3n4/2P5/PP1PPPPP/RK1BBQNR w HAha - 4 9
 perft 1 29
 perft 2 763
@@ -6561,7 +6562,7 @@ perft 4 574054
 perft 5 16926075
 perft 6 447896703
 
-id 1
+id 729
 epd r1nqbbnr/1pppp1pp/1k6/p4p2/8/4P3/PPPP1PPP/RKN1BBNR w HA - 0 9
 perft 1 26
 perft 2 658
@@ -6570,7 +6571,7 @@ perft 4 464039
 perft 5 12380488
 perft 6 349047256
 
-id 1
+id 730
 epd rkn2qrb/ppp1pppp/6n1/1b1p4/1P6/4PPB1/P1PP2PP/RKNQ1NRB w GAga - 3 9
 perft 1 23
 perft 2 574
@@ -6579,7 +6580,7 @@ perft 4 370324
 perft 5 9501401
 perft 6 263870337
 
-id 1
+id 731
 epd rbkn2br/ppppp1p1/4np1p/1P5q/8/2P1N3/P2PPPPP/RBK1QNBR w HAha - 1 9
 perft 1 29
 perft 2 992
@@ -6588,7 +6589,7 @@ perft 4 999564
 perft 5 30148787
 perft 6 1045942540
 
-id 1
+id 732
 epd 1knbqnbr/1ppppp1p/r5p1/p7/7P/2PN2P1/PP1PPP2/RK1BQNBR w HAh - 2 9
 perft 1 26
 perft 2 698
@@ -6597,7 +6598,7 @@ perft 4 512023
 perft 5 14848229
 perft 6 402599313
 
-id 1
+id 733
 epd rk1qnbbr/pnpppp1p/6p1/1p6/3P4/1P6/P1P1PPPP/RKNQNBBR w HAha - 1 9
 perft 1 20
 perft 2 480
@@ -6606,7 +6607,7 @@ perft 4 287539
 perft 5 7425917
 perft 6 203194521
 
-id 1
+id 734
 epd rknqnrbb/pp1p2p1/5p1p/2p1p3/2P1P3/P2P4/1P3PPP/RKNQNRBB w FAfa - 0 9
 perft 1 26
 perft 2 679
@@ -6615,7 +6616,7 @@ perft 4 494953
 perft 5 13790137
 perft 6 392629571
 
-id 1
+id 735
 epd bbrk2qr/pp1p1ppp/3n2n1/2p1p3/3P1P2/6N1/PPP1P1PP/BBRKN1QR w HChc - 0 9
 perft 1 26
 perft 2 790
@@ -6624,7 +6625,7 @@ perft 4 673269
 perft 5 19259490
 perft 6 617563700
 
-id 1
+id 736
 epd b1krnnqr/1p1ppppp/p1p5/b6B/P7/4P1N1/1PPP1PPP/BRK1N1QR w HB - 2 9
 perft 1 26
 perft 2 625
@@ -6633,7 +6634,7 @@ perft 4 415452
 perft 5 11490615
 perft 6 304805107
 
-id 1
+id 737
 epd 1rknnbqr/3ppppp/p7/1pp5/4b2P/P4P2/1PPPP1PR/BRKNNBQ1 w Bhb - 1 9
 perft 1 24
 perft 2 757
@@ -6642,7 +6643,7 @@ perft 4 618777
 perft 5 17275100
 perft 6 544309489
 
-id 1
+id 738
 epd br1nn1rb/pppkpqpp/3p1p2/8/PP6/4N3/1KPPPPPP/BR2NQRB w - - 3 9
 perft 1 24
 perft 2 682
@@ -6651,7 +6652,7 @@ perft 4 482711
 perft 5 13057308
 perft 6 375033550
 
-id 1
+id 739
 epd rbbkn1qr/pppp2p1/6np/4pp2/7N/7P/PPPPPPPR/RBBK1NQ1 w Aha - 0 9
 perft 1 22
 perft 2 586
@@ -6660,7 +6661,7 @@ perft 4 409891
 perft 5 10607781
 perft 6 324452612
 
-id 1
+id 740
 epd rk1bn1qr/pppbpppp/4n3/4p3/4P3/5P2/PPPP2PP/RKBB1NQR w HAha - 1 9
 perft 1 22
 perft 2 530
@@ -6669,7 +6670,7 @@ perft 4 348004
 perft 5 9514787
 perft 6 259898748
 
-id 1
+id 741
 epd rkbnnbqr/1ppp1ppp/p7/4p3/8/QP3P2/P1PPP1PP/RKBNNB1R w HAha - 0 9
 perft 1 29
 perft 2 705
@@ -6678,7 +6679,7 @@ perft 4 551042
 perft 5 17524731
 perft 6 472356665
 
-id 1
+id 742
 epd 1kbnnqrb/1pp1p1pp/r4p2/p2p4/N4P2/3P4/PPP1P1PP/RKB1NQRB w GAg - 2 9
 perft 1 21
 perft 2 623
@@ -6687,7 +6688,7 @@ perft 4 437554
 perft 5 11601134
 perft 6 343214006
 
-id 1
+id 743
 epd rbknbn1r/pppp1p1p/4p1q1/8/P1P3Pp/8/1P1PPP2/RBKNBNQR w HAha - 0 9
 perft 1 30
 perft 2 813
@@ -6696,7 +6697,7 @@ perft 4 708454
 perft 5 23379040
 perft 6 692576573
 
-id 1
+id 744
 epd rk1bb1qr/2pppppp/p2nn3/1p4P1/6QP/8/PPPPPP2/RKNBBN1R w HAha - 2 9
 perft 1 36
 perft 2 857
@@ -6705,7 +6706,7 @@ perft 4 757524
 perft 5 26485812
 perft 6 696999449
 
-id 1
+id 745
 epd rkn1bbqr/p2ppppp/2p1n3/1p6/4PP2/6PP/PPPP4/RKNNBBQR w HAha - 0 9
 perft 1 33
 perft 2 687
@@ -6714,7 +6715,7 @@ perft 4 511018
 perft 5 17101732
 perft 6 412778368
 
-id 1
+id 746
 epd rkn1bqrb/pnp1pppp/3p4/8/Pp6/1N2NP2/1PPPP1PP/RK2BQRB w GAga - 0 9
 perft 1 28
 perft 2 591
@@ -6723,7 +6724,7 @@ perft 4 406025
 perft 5 12182448
 perft 6 312575205
 
-id 1
+id 747
 epd rbk1n1br/ppp1ppqp/2n5/2Np2p1/8/2P5/PPBPPPPP/R1KN1QBR w HAha - 4 9
 perft 1 35
 perft 2 930
@@ -6732,7 +6733,7 @@ perft 4 844433
 perft 5 27160490
 perft 6 780616047
 
-id 1
+id 748
 epd rknbn1br/1ppp1ppp/p3p3/8/1q6/2P2N1P/P2PPPP1/RKNB1QBR w HAha - 0 9
 perft 1 4
 perft 2 157
@@ -6741,7 +6742,7 @@ perft 4 138102
 perft 5 3454704
 perft 6 125373395
 
-id 1
+id 749
 epd rkn1qbbr/pp3ppp/4n3/2ppp3/4P1P1/P2P4/1PP2P1P/RKNNQBBR w HAha - 0 9
 perft 1 28
 perft 2 840
@@ -6750,7 +6751,7 @@ perft 4 771328
 perft 5 23200961
 perft 6 756489357
 
-id 1
+id 750
 epd rkn1qrbb/pp1ppp2/2p1n1p1/7p/2P2P1P/6P1/PP1PP3/RKNNQRBB w FAfa - 1 9
 perft 1 32
 perft 2 867
@@ -6759,7 +6760,7 @@ perft 4 757836
 perft 5 24485663
 perft 6 688115847
 
-id 1
+id 751
 epd b1rknnrq/bpppp1p1/p6p/5p1P/6P1/4N3/PPPPPP2/BBRKN1RQ w GCgc - 1 9
 perft 1 33
 perft 2 851
@@ -6768,7 +6769,7 @@ perft 4 763967
 perft 5 26686205
 perft 6 731944177
 
-id 1
+id 752
 epd brkb1nr1/pppppp2/3n2pp/3B4/1P6/4P3/PqPP1PPP/BRK1NNRQ w GBgb - 2 9
 perft 1 4
 perft 2 98
@@ -6777,7 +6778,7 @@ perft 4 76143
 perft 5 2352530
 perft 6 64251468
 
-id 1
+id 753
 epd brk1nbrq/1ppppn1p/6p1/p4p2/P5P1/5R2/1PPPPP1P/BRKNNB1Q w Bgb - 0 9
 perft 1 29
 perft 2 922
@@ -6786,7 +6787,7 @@ perft 4 879527
 perft 5 27463717
 perft 6 888881062
 
-id 1
+id 754
 epd brkn1rqb/1p1ppppp/3n4/p1p5/1P3P2/8/PNPPP1PP/BR1KNRQB w fb - 1 9
 perft 1 29
 perft 2 633
@@ -6795,7 +6796,7 @@ perft 4 469818
 perft 5 15076198
 perft 6 396737074
 
-id 1
+id 755
 epd rb1k1nrq/pbp1pppp/1p1p1n2/8/5P2/4NN1P/PPPPP1P1/RBBK2RQ w GAga - 2 9
 perft 1 28
 perft 2 841
@@ -6804,7 +6805,7 @@ perft 4 710751
 perft 5 20772996
 perft 6 613798447
 
-id 1
+id 756
 epd rkbbnnrq/p1pp3p/4p1p1/1p3p2/P6P/1P6/1BPPPPP1/RK1BNNRQ w GAga - 0 9
 perft 1 33
 perft 2 957
@@ -6813,7 +6814,7 @@ perft 4 907217
 perft 5 29735654
 perft 6 903933626
 
-id 1
+id 757
 epd rk2nbrq/p1ppppp1/bpn5/7p/6P1/2N2P2/PPPPP1QP/RKB1NBR1 w GAga - 2 9
 perft 1 24
 perft 2 687
@@ -6822,7 +6823,7 @@ perft 4 544627
 perft 5 15518417
 perft 6 484217179
 
-id 1
+id 758
 epd rkbn1r1b/pp1pppnp/6q1/2p3p1/5P1P/4N3/PPPPP1P1/RKB1NRQB w FAfa - 1 9
 perft 1 23
 perft 2 831
@@ -6831,7 +6832,7 @@ perft 4 754622
 perft 5 21126103
 perft 6 744755212
 
-id 1
+id 759
 epd rbknb1rq/ppp1p1p1/3pnp1p/8/6PP/2PP4/PP2PP2/RBKNBNRQ w GAga - 0 9
 perft 1 31
 perft 2 838
@@ -6840,7 +6841,7 @@ perft 4 736910
 perft 5 24008129
 perft 6 677776408
 
-id 1
+id 760
 epd rknbb1rq/p1pn1ppp/4p3/1p1p4/2P5/1P2N1P1/P2PPP1P/RKNBB1RQ w GAga - 1 9
 perft 1 29
 perft 2 830
@@ -6849,7 +6850,7 @@ perft 4 721630
 perft 5 22243832
 perft 6 660040360
 
-id 1
+id 761
 epd rk1nbbrq/pp1p1ppp/3n4/P3p3/2p4P/8/1PPPPPP1/RKNNBBRQ w GAga - 1 9
 perft 1 24
 perft 2 484
@@ -6858,7 +6859,7 @@ perft 4 297419
 perft 5 8379748
 perft 6 214004367
 
-id 1
+id 762
 epd rknnbr1b/ppp2pqp/3p4/4p1p1/7P/3P1P2/PPP1P1P1/RKNNBRQB w FAfa - 0 9
 perft 1 32
 perft 2 838
@@ -6867,7 +6868,7 @@ perft 4 740701
 perft 5 23472124
 perft 6 699211365
 
-id 1
+id 763
 epd rb1k1rbq/ppppN1pp/2nn4/5p2/7P/8/PPPPPPP1/RBK1NRBQ w FA - 1 9
 perft 1 27
 perft 2 800
@@ -6876,7 +6877,7 @@ perft 4 701742
 perft 5 20804424
 perft 6 660917073
 
-id 1
+id 764
 epd r1nbnrbq/kppppp1p/6p1/8/p1PP1P2/4P3/PP4PP/RKNBNRBQ w FA - 1 9
 perft 1 28
 perft 2 757
@@ -6885,7 +6886,7 @@ perft 4 602699
 perft 5 17180857
 perft 6 507618340
 
-id 1
+id 765
 epd rkn1rbbq/p1pppppp/2n5/1pP5/8/1N2P3/PP1P1PPP/RK1NRBBQ w EAea - 1 9
 perft 1 22
 perft 2 483
@@ -6894,7 +6895,7 @@ perft 4 283679
 perft 5 7497674
 perft 6 191130942
 
-id 1
+id 766
 epd rknnrqbb/2pppppp/8/p7/Np3P2/3P4/PPP1P1PP/RKN1RQBB w EAea - 0 9
 perft 1 25
 perft 2 536
@@ -6903,7 +6904,7 @@ perft 4 339180
 perft 5 9694947
 perft 6 245669668
 
-id 1
+id 767
 epd bb1rknrn/1qppppp1/1p4B1/p6N/8/2P5/PP1PPPPP/B1QRK1RN w GDgd - 1 9
 perft 1 32
 perft 2 715
@@ -6912,7 +6913,7 @@ perft 4 575008
 perft 5 17860156
 perft 6 502410909
 
-id 1
+id 768
 epd b1rbknrn/qpp1ppp1/p6p/3p4/2P5/1P1P1P2/P3P1PP/BQRBKNRN w GCgc - 0 9
 perft 1 30
 perft 2 818
@@ -6921,7 +6922,7 @@ perft 4 688711
 perft 5 20981488
 perft 6 611986786
 
-id 1
+id 769
 epd bqkrnbrn/1pp1pp1p/p7/1B1p2p1/4P3/7P/PPPP1PP1/BQKRN1RN w - - 0 9
 perft 1 28
 perft 2 676
@@ -6930,7 +6931,7 @@ perft 4 478054
 perft 5 13126287
 perft 6 363765666
 
-id 1
+id 770
 epd bqrknrnb/1p2ppp1/p1pp3p/8/3P1P2/1PP5/P3P1PP/BQRKNRNB w FCfc - 0 9
 perft 1 31
 perft 2 646
@@ -6939,7 +6940,7 @@ perft 4 455607
 perft 5 14984618
 perft 6 349082278
 
-id 1
+id 771
 epd qbbrkn1r/pppppp1p/8/6p1/2P1Pn1P/6N1/PP1P1PP1/QBBRKNR1 w GDd - 3 9
 perft 1 20
 perft 2 532
@@ -6948,7 +6949,7 @@ perft 4 303586
 perft 5 7512432
 perft 6 202967948
 
-id 1
+id 772
 epd 1rbbknr1/p1ppp1pp/1pq2pn1/8/3P4/P3P3/QPP2PPP/1RBBKNRN w GBgb - 3 9
 perft 1 31
 perft 2 1002
@@ -6957,7 +6958,7 @@ perft 4 999607
 perft 5 30642468
 perft 6 1009228283
 
-id 1
+id 773
 epd qrbkn1rn/pppp1ppp/8/6b1/P1P1Pp2/8/1P1P2PP/QRBKNBRN w GBgb - 0 9
 perft 1 22
 perft 2 505
@@ -6966,7 +6967,7 @@ perft 4 304863
 perft 5 8192621
 perft 6 214730959
 
-id 1
+id 774
 epd qrbk1rnb/p2ppp1p/5n2/1pp3p1/8/7P/PPPPPPPN/QRBKR1NB w Bfb - 0 9
 perft 1 20
 perft 2 619
@@ -6975,7 +6976,7 @@ perft 4 449630
 perft 5 10571176
 perft 6 369603424
 
-id 1
+id 775
 epd qbrkb1r1/ppp2ppp/3pn1n1/P3p3/4P3/3P4/1PP2PPP/QBRKBNRN w GCgc - 1 9
 perft 1 26
 perft 2 755
@@ -6984,7 +6985,7 @@ perft 4 604483
 perft 5 17164382
 perft 6 510878835
 
-id 1
+id 776
 epd qrkbb1r1/ppp1pnpp/3p2n1/5p2/1P3P2/2Q3N1/P1PPP1PP/1RKBB1RN w GBgb - 0 9
 perft 1 35
 perft 2 918
@@ -6993,7 +6994,7 @@ perft 4 870888
 perft 5 30933394
 perft 6 867833733
 
-id 1
+id 777
 epd qrknbbrn/ppp1ppp1/8/7p/2Bp4/4PPP1/PPPP3P/QRKNB1RN w GBgb - 0 9
 perft 1 27
 perft 2 593
@@ -7002,7 +7003,7 @@ perft 4 376808
 perft 5 10422676
 perft 6 258348640
 
-id 1
+id 778
 epd qrk1brnb/ppppp3/4n2p/5pp1/2PP4/2N4P/PP2PPP1/QRK1BRNB w FBfb - 2 9
 perft 1 24
 perft 2 672
@@ -7011,7 +7012,7 @@ perft 4 506189
 perft 5 13765777
 perft 6 414930519
 
-id 1
+id 779
 epd qbrknrb1/p2ppppp/2p3n1/8/p4P2/6PP/1PPPP3/QBRKNRBN w FCfc - 0 9
 perft 1 29
 perft 2 759
@@ -7020,7 +7021,7 @@ perft 4 634493
 perft 5 20416668
 perft 6 584870558
 
-id 1
+id 780
 epd 1rkb1rbn/p1pp1ppp/3np3/1p6/4qP2/3NB3/PPPPPRPP/QRKB3N w Bfb - 0 9
 perft 1 22
 perft 2 923
@@ -7029,7 +7030,7 @@ perft 4 914106
 perft 5 24049880
 perft 6 957218571
 
-id 1
+id 781
 epd 1rknrbbn/p1pp1p1p/8/1p2p1p1/4qPP1/2P5/PP1PP1BP/QRKNR1BN w EBeb - 0 9
 perft 1 28
 perft 2 1309
@@ -7038,7 +7039,7 @@ perft 4 1568968
 perft 5 44576409
 perft 6 1846382333
 
-id 1
+id 782
 epd qrk1rn1b/ppppp2p/4n3/3b1pp1/4P2P/5BP1/PPPP1P2/QRKNRNB1 w EBeb - 3 9
 perft 1 26
 perft 2 839
@@ -7047,7 +7048,7 @@ perft 4 726354
 perft 5 19978260
 perft 6 661207281
 
-id 1
+id 783
 epd bbrqk1rn/pp1ppppp/8/2p5/2P1P3/5n1P/PPBP1PP1/B1RQKNRN w GCgc - 1 9
 perft 1 3
 perft 2 95
@@ -7056,7 +7057,7 @@ perft 4 85038
 perft 5 2518864
 perft 6 80775549
 
-id 1
+id 784
 epd brqbk2n/pppppprp/8/6p1/1P3n2/5P2/P1PPP1PP/R1QBKNRN w Gb - 2 9
 perft 1 22
 perft 2 593
@@ -7065,7 +7066,7 @@ perft 4 362760
 perft 5 8922397
 perft 6 253271592
 
-id 1
+id 785
 epd brqknbr1/pp3ppp/3p2n1/2p1p3/2P5/5P2/PPKPP1PP/BRQ1NBRN w gb - 0 9
 perft 1 21
 perft 2 590
@@ -7074,7 +7075,7 @@ perft 4 397355
 perft 5 9581695
 perft 6 304103516
 
-id 1
+id 786
 epd 1rqknrnb/2pp1ppp/p3p3/1p6/P2P4/5bP1/1PP1PP1P/BRQKNRNB w FBfb - 0 9
 perft 1 24
 perft 2 737
@@ -7083,7 +7084,7 @@ perft 4 598439
 perft 5 17948681
 perft 6 536330341
 
-id 1
+id 787
 epd rbb1k1rn/p1pqpppp/6n1/1p1p4/5P2/3PP3/PPP1K1PP/RBBQ1NRN w ga - 3 9
 perft 1 24
 perft 2 694
@@ -7092,7 +7093,7 @@ perft 4 513782
 perft 5 13094823
 perft 6 419402704
 
-id 1
+id 788
 epd rqbbknr1/1ppp2pp/p5n1/4pp2/P7/1PP5/1Q1PPPPP/R1BBKNRN w GAga - 0 9
 perft 1 24
 perft 2 600
@@ -7101,7 +7102,7 @@ perft 4 408207
 perft 5 11029596
 perft 6 308553169
 
-id 1
+id 789
 epd rqbknbrn/2pppppp/6Q1/pp6/8/2P5/PP1PPPPP/R1BKNBRN w GAga - 2 9
 perft 1 40
 perft 2 949
@@ -7110,7 +7111,7 @@ perft 4 889887
 perft 5 31296485
 perft 6 881529007
 
-id 1
+id 790
 epd rqbknr1b/pp1ppp2/2p2n1p/6p1/8/3P1PPP/PPP1P3/RQBKNRNB w FAfa - 0 9
 perft 1 20
 perft 2 560
@@ -7119,7 +7120,7 @@ perft 4 373921
 perft 5 8687544
 perft 6 277906201
 
-id 1
+id 791
 epd rbqkbnrn/p3pppp/1p6/3p4/P1p3P1/1P6/1QPPPP1P/RB1KBNRN w GAga - 0 9
 perft 1 30
 perft 2 1155
@@ -7128,7 +7129,7 @@ perft 4 1351455
 perft 5 43092716
 perft 6 1614019629
 
-id 1
+id 792
 epd rqkbb1rn/p1p1pppn/1p1p4/7p/4PP2/7P/PPPPB1P1/RQK1BNRN w GAga - 1 9
 perft 1 30
 perft 2 701
@@ -7137,7 +7138,7 @@ perft 4 515942
 perft 5 15450970
 perft 6 401499189
 
-id 1
+id 793
 epd rqknbbrn/1p2pp1p/3p2p1/p1p5/P2P4/1P6/1KP1PPPP/RQ1NBBRN w ga - 0 9
 perft 1 28
 perft 2 756
@@ -7146,7 +7147,7 @@ perft 4 610320
 perft 5 17989811
 perft 6 525585996
 
-id 1
+id 794
 epd rqknbrnb/1pp3pp/5p2/p2pp3/P7/3PPN2/1PP2PPP/RQKNBR1B w FAfa - 0 9
 perft 1 26
 perft 2 731
@@ -7155,7 +7156,7 @@ perft 4 550395
 perft 5 15209404
 perft 6 439767476
 
-id 1
+id 795
 epd rbqkr1bn/p1pppp1p/1p1n4/6p1/7P/3P1PP1/PPP1P3/RBQKNRBN w FAa - 0 9
 perft 1 27
 perft 2 586
@@ -7164,7 +7165,7 @@ perft 4 381604
 perft 5 10905865
 perft 6 274364342
 
-id 1
+id 796
 epd rqk1nrb1/ppbp1ppp/4p1n1/2p5/7P/1PP5/P2PPPP1/RQKBNRBN w FAfa - 1 9
 perft 1 27
 perft 2 749
@@ -7173,7 +7174,7 @@ perft 4 602318
 perft 5 18084787
 perft 6 520547029
 
-id 1
+id 797
 epd rqknrbbn/pp1p1ppp/4p3/2p5/3P2P1/7P/PPP1PP2/RQKNRBBN w EAa - 0 9
 perft 1 20
 perft 2 533
@@ -7182,7 +7183,7 @@ perft 4 336248
 perft 5 8230417
 perft 6 245871540
 
-id 1
+id 798
 epd rqknrnbb/pp1ppp1p/2p3p1/8/8/1P2P1NP/P1PP1PP1/RQKNR1BB w EAea - 0 9
 perft 1 22
 perft 2 633
@@ -7191,7 +7192,7 @@ perft 4 441877
 perft 5 10827868
 perft 6 343525739
 
-id 1
+id 799
 epd 1brkq1rn/2pppppp/1p2n3/p2bN3/8/7P/PPPPPPP1/BBRKQ1RN w GCgc - 2 9
 perft 1 27
 perft 2 748
@@ -7200,7 +7201,7 @@ perft 4 580054
 perft 5 16010135
 perft 6 475206624
 
-id 1
+id 800
 epd brkbqnrn/2pp1ppp/8/1p2p3/Pp2N3/8/2PPPPPP/BRKBQNR1 w GBgb - 0 9
 perft 1 30
 perft 2 827
@@ -7209,7 +7210,7 @@ perft 4 757837
 perft 5 23746165
 perft 6 751690068
 
-id 1
+id 801
 epd brk1nbrn/pp1ppppp/2p5/7P/5P2/q2P4/PPP1P1P1/BRKQNBRN w GBgb - 1 9
 perft 1 15
 perft 2 471
@@ -7218,7 +7219,7 @@ perft 4 276424
 perft 5 5960901
 perft 6 190316951
 
-id 1
+id 802
 epd brkqnrnb/1p1pp1p1/p4p2/2p4p/8/P2PP3/1PP1QPPP/BRK1NRNB w FBfb - 0 9
 perft 1 24
 perft 2 479
@@ -7227,7 +7228,7 @@ perft 4 280081
 perft 5 7830230
 perft 6 190419716
 
-id 1
+id 803
 epd rbbkqnrn/2ppp2p/pp3p2/6p1/P6P/8/RPPPPPP1/1BBKQNRN w Gga - 0 9
 perft 1 21
 perft 2 523
@@ -7236,7 +7237,7 @@ perft 4 328733
 perft 5 8322614
 perft 6 242240658
 
-id 1
+id 804
 epd rkbbqr1n/1ppppppn/7p/p7/4P3/2P2P2/PP1PB1PP/RKB1QNRN w GAa - 3 9
 perft 1 27
 perft 2 563
@@ -7245,7 +7246,7 @@ perft 4 372148
 perft 5 11105151
 perft 6 283211800
 
-id 1
+id 805
 epd rkbqnbrn/ppppp3/8/5ppp/2P3P1/7P/PPQPPP2/RKB1NBRN w GAga - 0 9
 perft 1 28
 perft 2 639
@@ -7254,7 +7255,7 @@ perft 4 469250
 perft 5 14872172
 perft 6 384663405
 
-id 1
+id 806
 epd rkb1nrnb/pppp1pp1/5q1p/8/P3p3/4R1P1/1PPPPP1P/1KBQNRNB w Ffa - 0 9
 perft 1 28
 perft 2 873
@@ -7263,7 +7264,7 @@ perft 4 720814
 perft 5 20209424
 perft 6 625281937
 
-id 1
+id 807
 epd rbkqb1rn/1p1ppppp/4n3/p1p5/8/3PBP2/PPP1P1PP/RBKQ1NRN w GAga - 0 9
 perft 1 26
 perft 2 798
@@ -7272,7 +7273,7 @@ perft 4 667496
 perft 5 18475618
 perft 6 591681956
 
-id 1
+id 808
 epd rk1qbnrn/1p1ppppp/1b6/p1p5/P7/2P3NP/1P1PPPP1/RKQBB1RN w GAga - 0 9
 perft 1 22
 perft 2 506
@@ -7281,7 +7282,7 @@ perft 4 301029
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 perft 6 205739580
 
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 epd rk1nbbrn/ppp1ppp1/8/3p3p/1P1P2q1/5PB1/P1P1P1PP/RKQN1BRN w GAga - 1 9
 perft 1 31
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@@ -7290,7 +7291,7 @@ perft 4 903799
 perft 5 27827461
 perft 6 876341492
 
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 epd rkqnbr1b/pp1pppp1/7p/2p2n2/P2P4/7N/RPP1PPPP/1KQNBR1B w Ffa - 0 9
 perft 1 31
 perft 2 750
@@ -7299,7 +7300,7 @@ perft 4 646252
 perft 5 21639104
 perft 6 617064197
 
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 perft 1 26
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@@ -7308,7 +7309,7 @@ perft 4 465119
 perft 5 13643783
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 perft 1 24
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@@ -7317,7 +7318,7 @@ perft 4 371597
 perft 5 10066892
 perft 6 271121237
 
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 perft 1 25
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@@ -7326,7 +7327,7 @@ perft 4 340734
 perft 5 9043111
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@@ -7335,7 +7336,7 @@ perft 4 566572
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@@ -7344,7 +7345,7 @@ perft 4 394705
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 perft 1 30
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@@ -7353,7 +7354,7 @@ perft 4 621332
 perft 5 20360394
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@@ -7362,7 +7363,7 @@ perft 4 352883
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@@ -7371,7 +7372,7 @@ perft 4 764915
 perft 5 26262884
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@@ -7389,7 +7390,7 @@ perft 4 488740
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@@ -7398,7 +7399,7 @@ perft 4 401483
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@@ -7407,7 +7408,7 @@ perft 4 645200
 perft 5 19093408
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@@ -7416,7 +7417,7 @@ perft 4 1374158
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@@ -7443,7 +7444,7 @@ perft 4 460663
 perft 5 13389799
 perft 6 383508368
 
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@@ -7452,7 +7453,7 @@ perft 4 1011922
 perft 5 35946987
 perft 6 992756232
 
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@@ -7461,7 +7462,7 @@ perft 4 610557
 perft 5 21014787
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@@ -7470,7 +7471,7 @@ perft 4 568788
 perft 5 16461795
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@@ -7479,7 +7480,7 @@ perft 4 700453
 perft 5 21875031
 perft 6 654754840
 
-id 1
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 perft 1 30
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@@ -7488,7 +7489,7 @@ perft 4 671112
 perft 5 20532790
 perft 6 603059376
 
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 perft 1 27
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@@ -7497,7 +7498,7 @@ perft 4 555622
 perft 5 15156662
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 perft 5 22852433
 perft 6 577223409
 
-id 1
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 perft 1 23
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@@ -7515,7 +7516,7 @@ perft 4 440504
 perft 5 10687843
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 perft 1 20
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@@ -7524,7 +7525,7 @@ perft 4 275250
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 perft 1 22
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 perft 5 8671852
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 perft 5 12900485
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 perft 1 25
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@@ -7551,7 +7552,7 @@ perft 4 741972
 perft 5 20276176
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 perft 1 24
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@@ -7560,7 +7561,7 @@ perft 4 322175
 perft 5 9054028
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-id 1
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 perft 5 14697705
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-id 1
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@@ -7578,7 +7579,7 @@ perft 4 345070
 perft 5 10223443
 perft 6 248715580
 
-id 1
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 perft 5 16047041
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 perft 1 2
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 perft 5 1017864
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-id 1
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 perft 5 17192121
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-id 1
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 perft 5 11917036
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-id 1
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 perft 5 16453359
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-id 1
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-id 1
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-id 1
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 perft 5 9224232
 perft 6 257288920
 
-id 1
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@@ -7794,7 +7795,7 @@ perft 4 396423
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-id 1
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@@ -7803,7 +7804,7 @@ perft 4 1276664
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-id 1
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 perft 5 5679073
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@@ -7839,7 +7840,7 @@ perft 4 562201
 perft 5 19486022
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 perft 5 48216013
 perft 6 1522548864
 
-id 1
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-id 1
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 perft 5 15055365
 perft 6 419552571
 
-id 1
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 perft 1 23
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 perft 5 10747407
 perft 6 323905533
 
-id 1
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@@ -7893,7 +7894,7 @@ perft 4 846839
 perft 5 23063284
 perft 6 807913585
 
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 perft 5 10976745
 perft 6 251694423
 
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 perft 6 479400272
 
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@@ -7920,7 +7921,7 @@ perft 4 546215
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 perft 6 470796854
 
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@@ -7929,7 +7930,7 @@ perft 4 505618
 perft 5 16639723
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 epd br1krb1n/2qppppp/pp3n2/8/1P4P1/8/P1PPPP1P/1RQKRBNN w EBeb - 0 9
 perft 1 24
 perft 2 945
@@ -7938,7 +7939,7 @@ perft 4 926427
 perft 5 25019636
 perft 6 959651619
 
-id 1
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 epd brqkr1nb/2ppp1pp/1p2np2/p7/2P1PN2/8/PP1P1PPP/BRQKRN1B w EBeb - 0 9
 perft 1 28
 perft 2 675
@@ -7947,7 +7948,7 @@ perft 4 504128
 perft 5 15516491
 perft 6 417396563
 
-id 1
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 epd rbbqkrnn/3pppp1/p7/1pp4p/2P1P2P/8/PP1P1PP1/RBBQKRNN w FAfa - 0 9
 perft 1 26
 perft 2 671
@@ -7956,7 +7957,7 @@ perft 4 496806
 perft 5 14072641
 perft 6 404960259
 
-id 1
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 epd rqbbkr1n/pp1p1p1p/4pn2/2p3p1/4P1P1/3P3P/PPP2P2/RQBBKRNN w FAfa - 0 9
 perft 1 22
 perft 2 633
@@ -7965,7 +7966,7 @@ perft 4 441809
 perft 5 10776416
 perft 6 335689685
 
-id 1
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 epd rqbkrbnn/p1ppp3/1p3pp1/7p/3P4/P1P5/1PQ1PPPP/R1BKRBNN w EAea - 0 9
 perft 1 32
 perft 2 607
@@ -7974,7 +7975,7 @@ perft 4 454319
 perft 5 15586203
 perft 6 383515709
 
-id 1
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 epd rqbkrnn1/pp2ppbp/3p4/2p3p1/2P5/1P3N1P/P2PPPP1/RQBKRN1B w EAea - 1 9
 perft 1 29
 perft 2 943
@@ -7983,7 +7984,7 @@ perft 4 908740
 perft 5 28761841
 perft 6 907579129
 
-id 1
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 epd rbqkb1nn/1ppppr1p/p5p1/5p2/1P6/2P4P/P1KPPPP1/RBQ1BRNN w a - 1 9
 perft 1 22
 perft 2 441
@@ -7992,7 +7993,7 @@ perft 4 231273
 perft 5 5784206
 perft 6 140934555
 
-id 1
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 epd rqkb1rnn/1pp1pp1p/p5p1/1b1p4/3P4/P5P1/RPP1PP1P/1QKBBRNN w Ffa - 1 9
 perft 1 21
 perft 2 505
@@ -8001,7 +8002,7 @@ perft 4 290897
 perft 5 7147063
 perft 6 188559137
 
-id 1
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 epd rq1rbbnn/pkp1ppp1/3p3p/1p2N1P1/8/8/PPPPPP1P/RQKRBB1N w DA - 0 9
 perft 1 27
 perft 2 608
@@ -8010,7 +8011,7 @@ perft 4 387751
 perft 5 10808908
 perft 6 268393274
 
-id 1
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 epd rqkrb2b/p2ppppp/2p3nn/1p6/5P2/PP1P4/2P1P1PP/RQKRBNNB w DAda - 1 9
 perft 1 30
 perft 2 749
@@ -8019,7 +8020,7 @@ perft 4 581531
 perft 5 16916813
 perft 6 485406712
 
-id 1
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 epd rbqkr1bn/pp1ppp2/2p1n2p/6p1/8/4BPNP/PPPPP1P1/RBQKRN2 w EAea - 0 9
 perft 1 23
 perft 2 600
@@ -8028,7 +8029,7 @@ perft 4 410057
 perft 5 11041820
 perft 6 314327867
 
-id 1
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 epd rqkbrnb1/2ppp1pp/pp3pn1/8/5P2/B2P4/PPP1P1PP/RQKBRN1N w EAea - 2 9
 perft 1 22
 perft 2 569
@@ -8037,7 +8038,7 @@ perft 4 371471
 perft 5 9395816
 perft 6 269460607
 
-id 1
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 epd rqkrnbb1/p1p1pppp/1p4n1/3p4/7P/P3P3/1PPPBPP1/RQKRN1BN w DAda - 0 9
 perft 1 27
 perft 2 579
@@ -8046,7 +8047,7 @@ perft 4 373079
 perft 5 10238486
 perft 6 266047417
 
-id 1
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 epd rqkrn1bb/p1ppp1pp/4n3/1p6/6p1/4N3/PPPPPPPP/RQKR2BB w DAda - 0 9
 perft 1 20
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@@ -8055,7 +8056,7 @@ perft 4 274162
 perft 5 6563859
 perft 6 193376359
 
-id 1
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 epd bbrkqr2/pppp1ppp/6nn/8/2P1p3/3PP2N/PP3PPP/BBRKQR1N w FCfc - 0 9
 perft 1 28
 perft 2 724
@@ -8064,7 +8065,7 @@ perft 4 619064
 perft 5 19318355
 perft 6 593204629
 
-id 1
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 epd brk1qrnn/1pppbppp/4p3/8/1p6/P1P4P/3PPPP1/BRKBQRNN w FBfb - 1 9
 perft 1 24
 perft 2 662
@@ -8073,7 +8074,7 @@ perft 4 468215
 perft 5 12610387
 perft 6 355969349
 
-id 1
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 epd 1r1qrbnn/p1pkpppp/1p1p4/8/3P1PP1/P4b2/1PP1P2P/BRKQRBNN w EB - 1 9
 perft 1 22
 perft 2 696
@@ -8082,7 +8083,7 @@ perft 4 510247
 perft 5 13697382
 perft 6 401903030
 
-id 1
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 epd 1rkqrnnb/p1p1p1pp/1p1p4/3b1p1N/4P3/5N2/PPPP1PPP/BRKQR2B w EBeb - 1 9
 perft 1 29
 perft 2 887
@@ -8091,7 +8092,7 @@ perft 4 816176
 perft 5 26051242
 perft 6 791718847
 
-id 1
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 epd rbbkq1rn/pppppppp/7n/8/P7/3P3P/1PPKPPP1/RBB1QRNN w a - 3 9
 perft 1 22
 perft 2 417
@@ -8100,7 +8101,7 @@ perft 4 216855
 perft 5 5505063
 perft 6 134818483
 
-id 1
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 epd rkbbqr1n/1p1pppp1/2p2n2/p4NBp/8/3P4/PPP1PPPP/RK1BQRN1 w FAfa - 0 9
 perft 1 37
 perft 2 832
@@ -8109,7 +8110,7 @@ perft 4 728154
 perft 5 26676373
 perft 6 673756141
 
-id 1
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 epd rkbqrb1n/3pBppp/ppp2n2/8/8/P2P4/1PP1PPPP/RK1QRBNN w EAea - 0 9
 perft 1 28
 perft 2 685
@@ -8118,7 +8119,7 @@ perft 4 543069
 perft 5 16033316
 perft 6 482288814
 
-id 1
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 epd rkb1rn1b/ppppqppp/4p3/8/1P2n1P1/5Q2/P1PP1P1P/RKB1RNNB w EAea - 2 9
 perft 1 37
 perft 2 1158
@@ -8127,7 +8128,7 @@ perft 4 1234768
 perft 5 44672979
 perft 6 1389312729
 
-id 1
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 epd r1kqbrnn/pp1pp1p1/7p/2P2p2/5b2/3P4/P1P1P1PP/RBKQBRNN w FAfa - 0 9
 perft 1 5
 perft 2 161
@@ -8136,7 +8137,7 @@ perft 4 154885
 perft 5 4734999
 perft 6 157499039
 
-id 1
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 epd rkqbbr1n/ppp1ppp1/8/Q2p3p/4n3/3P1P2/PPP1P1PP/RK1BBRNN w FAfa - 2 9
 perft 1 38
 perft 2 1144
@@ -8145,7 +8146,7 @@ perft 4 1236877
 perft 5 43832975
 perft 6 1366087771
 
-id 1
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 epd rkqrbbn1/p1ppppp1/Bp5p/8/P6n/2P1P3/1P1P1PPP/RKQRB1NN w DAda - 0 9
 perft 1 28
 perft 2 551
@@ -8154,7 +8155,7 @@ perft 4 350861
 perft 5 9944107
 perft 6 251179183
 
-id 1
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 epd rkqrb1nb/1ppp1ppp/p7/4p3/5n2/3P2N1/PPPQPPPP/RK1RB1NB w DAda - 0 9
 perft 1 26
 perft 2 690
@@ -8163,7 +8164,7 @@ perft 4 513628
 perft 5 15965907
 perft 6 418191735
 
-id 1
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 epd rbkqrnbn/pppp1p2/4p1p1/7p/7P/P2P4/BPP1PPP1/R1KQRNBN w EAea - 0 9
 perft 1 27
 perft 2 515
@@ -8172,7 +8173,7 @@ perft 4 309727
 perft 5 8792550
 perft 6 218658292
 
-id 1
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 epd rkqbrnbn/pp1ppp2/8/2p3p1/P1P4p/5P2/1PKPP1PP/R1QBRNBN w ea - 0 9
 perft 1 27
 perft 2 627
@@ -8181,7 +8182,7 @@ perft 4 431101
 perft 5 11978698
 perft 6 328434174
 
-id 1
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 epd rkqrnbbn/1p2pp1p/3p2p1/p1p5/P5PP/3N4/1PPPPP2/RKQR1BBN w DAda - 0 9
 perft 1 23
 perft 2 624
@@ -8190,7 +8191,7 @@ perft 4 451860
 perft 5 11960861
 perft 6 367311176
 
-id 1
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 epd rk2rnbb/ppqppppp/2pn4/8/1P3P2/6P1/P1PPP1NP/RKQR1NBB w DAa - 1 9
 perft 1 27
 perft 2 727
@@ -8199,7 +8200,7 @@ perft 4 581003
 perft 5 16633696
 perft 6 505212747
 
-id 1
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 epd b1krrqnn/pp1ppp1p/2p3p1/8/P3Pb1P/1P6/2PP1PP1/BBRKRQNN w EC - 0 9
 perft 1 32
 perft 2 943
@@ -8208,7 +8209,7 @@ perft 4 865229
 perft 5 28672582
 perft 6 800922511
 
-id 1
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 epd 1rkbrqnn/p1pp1ppp/1p6/8/P2Pp3/8/1PPKPPQP/BR1BR1NN w eb - 0 9
 perft 1 28
 perft 2 916
@@ -8217,7 +8218,7 @@ perft 4 817624
 perft 5 22840279
 perft 6 759318058
 
-id 1
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 epd brkrqb1n/1pppp1pp/p7/3n1p2/P5P1/3PP3/1PP2P1P/BRKRQBNN w DBdb - 0 9
 perft 1 27
 perft 2 669
@@ -8226,7 +8227,7 @@ perft 4 484259
 perft 5 13956472
 perft 6 380267099
 
-id 1
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 epd brkrqnnb/3pppp1/1p6/p1p4p/2P3P1/6N1/PP1PPP1P/BRKRQ1NB w DBdb - 0 9
 perft 1 29
 perft 2 699
@@ -8235,7 +8236,7 @@ perft 4 512639
 perft 5 15093909
 perft 6 406594531
 
-id 1
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 epd r1bkrq1n/pp2pppp/3b1n2/2pp2B1/6P1/3P1P2/PPP1P2P/RB1KRQNN w EAea - 2 9
 perft 1 27
 perft 2 835
@@ -8244,7 +8245,7 @@ perft 4 713550
 perft 5 19867800
 perft 6 631209313
 
-id 1
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 epd rk1brq1n/p1p1pppp/3p1n2/1p3b2/4P3/2NQ4/PPPP1PPP/RKBBR2N w EAea - 4 9
 perft 1 36
 perft 2 1004
@@ -8253,7 +8254,7 @@ perft 4 979608
 perft 5 35143142
 perft 6 966310885
 
-id 1
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 epd rkbrqbnn/1p2ppp1/B1p5/p2p3p/4P2P/8/PPPP1PP1/RKBRQ1NN w DAda - 0 9
 perft 1 27
 perft 2 748
@@ -8262,7 +8263,7 @@ perft 4 597819
 perft 5 17597073
 perft 6 515304215
 
-id 1
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 epd rkbrqn1b/pp1pp1pp/2p2p2/5n2/8/2P2P2/PP1PP1PP/RKBRQ1NB w DAda - 0 9
 perft 1 20
 perft 2 479
@@ -8271,7 +8272,7 @@ perft 4 266446
 perft 5 6253775
 perft 6 167767913
 
-id 1
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 epd rbkrbnn1/ppppp1pp/5q2/5p2/5P2/P3P2N/1PPP2PP/RBKRBQ1N w DAda - 3 9
 perft 1 28
 perft 2 947
@@ -8280,7 +8281,7 @@ perft 4 876068
 perft 5 26007841
 perft 6 838704143
 
-id 1
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 epd rkr1bqnn/1ppp1p1p/p5p1/4p3/3PP2b/2P2P2/PP4PP/RKRBBQNN w CAca - 0 9
 perft 1 31
 perft 2 1004
@@ -8289,7 +8290,7 @@ perft 4 1006830
 perft 5 32688124
 perft 6 1024529879
 
-id 1
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 epd rkrqbbnn/pppp3p/8/4ppp1/1PP4P/8/P2PPPP1/RKRQBBNN w CAca - 0 9
 perft 1 24
 perft 2 717
@@ -8298,7 +8299,7 @@ perft 4 564137
 perft 5 15844525
 perft 6 484884485
 
-id 1
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 epd rkrqbn1b/pppp2pp/8/4pp2/1P1P2n1/5N2/P1P1PP1P/RKRQBN1B w CAca - 0 9
 perft 1 25
 perft 2 718
@@ -8307,7 +8308,7 @@ perft 4 587666
 perft 5 17257753
 perft 6 537354146
 
-id 1
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 epd rbkrqnbn/p1p1ppp1/1p1p4/8/3PP2p/2PB4/PP3PPP/R1KRQNBN w DAda - 0 9
 perft 1 30
 perft 2 754
@@ -8316,7 +8317,7 @@ perft 4 611322
 perft 5 19338246
 perft 6 532603566
 
-id 1
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 epd 1krbqnbn/1p2pppp/r1pp4/p7/8/1P1P2PP/P1P1PP2/RKRBQNBN w CAc - 0 9
 perft 1 21
 perft 2 566
@@ -8325,7 +8326,7 @@ perft 4 375128
 perft 5 9700847
 perft 6 279864836
 
-id 1
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 epd rkrq1b2/pppppppb/3n2np/2N5/4P3/7P/PPPP1PP1/RKRQ1BBN w CAca - 1 9
 perft 1 33
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@@ -8334,7 +8335,7 @@ perft 4 479678
 perft 5 15990307
 perft 6 382218272
 
-id 1
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 epd rkr1nnbb/ppp2p1p/3p1qp1/4p3/P5P1/3PN3/1PP1PP1P/RKRQN1BB w CAca - 1 9
 perft 1 28
 perft 2 715
@@ -8343,7 +8344,7 @@ perft 4 555328
 perft 5 16303092
 perft 6 468666425
 
-id 1
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 epd bbrkrnqn/1p1ppppp/8/8/p2pP3/PP6/2P2PPP/BBRKRNQN w ECec - 0 9
 perft 1 24
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@@ -8352,7 +8353,7 @@ perft 4 603231
 perft 5 15957628
 perft 6 509307623
 
-id 1
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 epd brkbrnqn/ppp2p2/4p3/P2p2pp/6P1/5P2/1PPPP2P/BRKBRNQN w EBeb - 0 9
 perft 1 25
 perft 2 548
@@ -8361,7 +8362,7 @@ perft 4 348259
 perft 5 9688526
 perft 6 247750144
 
-id 1
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 epd brkr1bqn/1pppppp1/3n3p/1p6/P7/4P1P1/1PPP1P1P/BRKRN1QN w DBdb - 0 9
 perft 1 19
 perft 2 359
@@ -8370,7 +8371,7 @@ perft 4 157099
 perft 5 3521652
 perft 6 81787718
 
-id 1
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 epd brkr1qnb/pppp2pp/2B1p3/5p2/2n5/6PP/PPPPPPN1/BRKR1QN1 w DBdb - 1 9
 perft 1 27
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@@ -8379,7 +8380,7 @@ perft 4 741626
 perft 5 20558538
 perft 6 667089231
 
-id 1
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 epd rbbkrnqn/p1p1p1pp/8/1p1p4/1P1Pp3/6N1/P1P2PPP/RBBKRNQ1 w EAea - 0 9
 perft 1 28
 perft 2 723
@@ -8388,7 +8389,7 @@ perft 4 514440
 perft 5 14621108
 perft 6 397454100
 
-id 1
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 epd rkbbrn1n/pppppp2/5q1p/6p1/3P3P/4P3/PPP2PP1/RKBBRNQN w EAea - 1 9
 perft 1 25
 perft 2 741
@@ -8397,7 +8398,7 @@ perft 4 585198
 perft 5 15605840
 perft 6 485037906
 
-id 1
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 epd rkbr1bq1/ppnppppp/6n1/2p5/2P1N2P/8/PP1PPPP1/RKBRNBQ1 w DAda - 3 9
 perft 1 24
 perft 2 547
@@ -8406,7 +8407,7 @@ perft 4 339497
 perft 5 9410221
 perft 6 234041078
 
-id 1
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 epd 1kbrnqnb/r1ppppp1/8/pp5p/8/1P1NP3/P1PP1PPP/RKB1RQNB w Ad - 2 9
 perft 1 26
 perft 2 618
@@ -8415,7 +8416,7 @@ perft 4 442643
 perft 5 13112297
 perft 6 357030697
 
-id 1
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 epd rbkrb1qn/1pp1ppp1/3pn2p/pP6/8/4N1P1/P1PPPP1P/RBKRB1QN w DAda - 0 9
 perft 1 21
 perft 2 544
@@ -8424,7 +8425,7 @@ perft 4 338832
 perft 5 8381483
 perft 6 236013157
 
-id 1
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 epd rkrbbnqn/ppppp3/5p2/6pp/5PBP/4P3/PPPP2P1/RKR1BNQN w CAca - 0 9
 perft 1 30
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@@ -8433,7 +8434,7 @@ perft 4 764356
 perft 5 21894752
 perft 6 669256602
 
-id 1
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 epd rkr1bb1n/ppppp1pp/5p2/4n3/3QP3/5P2/RPPP2PP/1KRNBB1N w Cca - 1 9
 perft 1 45
 perft 2 1172
@@ -8442,7 +8443,7 @@ perft 4 1332060
 perft 5 57856784
 perft 6 1501852662
 
-id 1
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 epd rkr1bqnb/pp1ppppp/8/2pN4/1P6/5N2/P1PPnPPP/RKR1BQ1B w CAca - 0 9
 perft 1 28
 perft 2 730
@@ -8451,7 +8452,7 @@ perft 4 559167
 perft 5 16323242
 perft 6 463032124
 
-id 1
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 epd rbkrnqb1/2ppppp1/p5np/1p6/8/3N4/PPPPPPPP/RBKRQNB1 w DAda - 2 9
 perft 1 20
 perft 2 417
@@ -8460,7 +8461,7 @@ perft 4 217390
 perft 5 5180716
 perft 6 133936564
 
-id 1
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 epd rkrbnqb1/p1pppnpp/5p2/1p6/2P5/1P1P1N2/P3PPPP/RKRB1QBN w CAca - 0 9
 perft 1 25
 perft 2 546
@@ -8469,7 +8470,7 @@ perft 4 330316
 perft 5 8813781
 perft 6 222026485
 
-id 1
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 epd rkr1qbbn/ppppppp1/4n3/7p/8/P7/KPPPPPPP/R1RNQBBN w ca - 0 9
 perft 1 22
 perft 2 484
@@ -8478,7 +8479,7 @@ perft 4 267495
 perft 5 6633319
 perft 6 163291279
 
-id 1
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 epd rkrnqnb1/1ppppp2/p5p1/7p/8/P1bPP3/1PP1QPPP/RKRN1NBB w CAca - 0 9
 perft 1 22
 perft 2 636
@@ -8487,7 +8488,7 @@ perft 4 441001
 perft 5 11614241
 perft 6 331083405
 
-id 1
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 epd b2krn1q/p1rppppp/1Q3n2/2p1b3/1P4P1/8/P1PPPP1P/BBRKRNN1 w ECe - 3 9
 perft 1 36
 perft 2 1192
@@ -8496,7 +8497,7 @@ perft 4 1406795
 perft 5 50382104
 perft 6 1650202838
 
-id 1
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 epd brkbrnn1/pp1pppp1/7q/2p5/6Pp/4P1NP/PPPP1P2/BRKBR1NQ w EBeb - 2 9
 perft 1 30
 perft 2 978
@@ -8505,7 +8506,7 @@ perft 4 942398
 perft 5 29205057
 perft 6 936568065
 
-id 1
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 epd brkrnb1q/pp1p1ppp/2p1p3/5n2/1P6/5N1N/P1PPPPPP/BRKR1B1Q w DBdb - 1 9
 perft 1 31
 perft 2 897
@@ -8514,7 +8515,7 @@ perft 4 810187
 perft 5 25423729
 perft 6 755334868
 
-id 1
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 epd brkr1nqb/pp1p1pp1/2pn3p/P3p3/4P3/6P1/1PPP1P1P/BRKRNNQB w DBdb - 0 9
 perft 1 19
 perft 2 382
@@ -8523,7 +8524,7 @@ perft 4 182292
 perft 5 4232274
 perft 6 103537333
 
-id 1
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 epd r1bkrn1q/ppbppppp/5n2/2p5/3P4/P6N/1PP1PPPP/RBBKRNQ1 w EAea - 3 9
 perft 1 27
 perft 2 822
@@ -8532,7 +8533,7 @@ perft 4 678880
 perft 5 19115128
 perft 6 578210135
 
-id 1
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 epd rkbbrnnq/pp2pppp/8/2pp4/P1P5/1P3P2/3PP1PP/RKBBRNNQ w EAea - 1 9
 perft 1 23
 perft 2 643
@@ -8541,7 +8542,7 @@ perft 4 442070
 perft 5 11170489
 perft 6 329615708
 
-id 1
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 epd rkbr1b1q/p1pppppp/1p1n4/7n/5QP1/3N4/PPPPPP1P/RKBR1BN1 w DAda - 4 9
 perft 1 37
 perft 2 943
@@ -8550,7 +8551,7 @@ perft 4 880474
 perft 5 31568111
 perft 6 842265141
 
-id 1
+id 950
 epd rkbr1nqb/pppp2np/8/4ppp1/1P6/6N1/P1PPPPPP/RKBRN1QB w DAda - 1 9
 perft 1 23
 perft 2 574
@@ -8559,7 +8560,7 @@ perft 4 362306
 perft 5 9020291
 perft 6 261247606
 
-id 1
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 epd rbkr1nnq/p1p1pp1p/1p4p1/3p4/b3P3/4N3/PPPPNPPP/RBKRB1Q1 w DAda - 0 9
 perft 1 26
 perft 2 900
@@ -8568,7 +8569,7 @@ perft 4 805006
 perft 5 21653203
 perft 6 745802405
 
-id 1
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 epd rkrbb1nq/p2pppp1/1p4n1/2p4p/3N4/4P1P1/PPPP1P1P/RKRBBN1Q w CAca - 0 9
 perft 1 32
 perft 2 697
@@ -8577,7 +8578,7 @@ perft 4 531121
 perft 5 17150175
 perft 6 441578567
 
-id 1
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 epd rkrnbb1q/pp2pp1p/6pn/2pp4/2B1P2P/8/PPPP1PP1/RKRNB1NQ w CAca - 0 9
 perft 1 28
 perft 2 854
@@ -8586,7 +8587,7 @@ perft 4 755990
 perft 5 21823412
 perft 6 712787248
 
-id 1
+id 954
 epd rk2bnqb/pprpppp1/4n2p/2p5/P7/3P2NP/1PP1PPP1/RKRNB1QB w CAa - 1 9
 perft 1 26
 perft 2 596
@@ -8595,7 +8596,7 @@ perft 4 414862
 perft 5 11758184
 perft 6 323043654
 
-id 1
+id 955
 epd r1krnnbq/pp1ppp1p/6p1/2p5/2P5/P3P3/Rb1P1PPP/1BKRNNBQ w Dda - 0 9
 perft 1 2
 perft 2 61
@@ -8604,7 +8605,7 @@ perft 4 40072
 perft 5 937188
 perft 6 28753562
 
-id 1
+id 956
 epd 1krbnnbq/1pp1p1pp/r7/p2p1p2/3PP3/2P3P1/PP3P1P/RKRBNNBQ w CAc - 0 9
 perft 1 30
 perft 2 953
@@ -8613,7 +8614,7 @@ perft 4 860530
 perft 5 25531358
 perft 6 787205262
 
-id 1
+id 957
 epd rkr1nbbq/2ppp1pp/1pn5/p4p2/P6P/3P4/1PP1PPPB/RKRNNB1Q w CAca - 1 9
 perft 1 24
 perft 2 645
@@ -8622,7 +8623,7 @@ perft 4 446423
 perft 5 11484012
 perft 6 341262639
 
-id 1
+id 958
 epd rkrnnqbb/p1ppp2p/Qp6/4Pp2/5p2/8/PPPP2PP/RKRNN1BB w CAca - 0 9
 perft 1 35
 perft 2 929
@@ -8631,7 +8632,7 @@ perft 4 896130
 perft 5 31272517
 perft 6 915268405
 
-id 1
+id 959
 epd bbq1nr1r/pppppk1p/2n2p2/6p1/P4P2/4P1P1/1PPP3P/BBQNNRKR w HF - 1 9
 perft 1 23
 perft 2 589

From bc1c55aeaf619fd61e5116283705274e701df378 Mon Sep 17 00:00:00 2001
From: Jackson Hall <jacksonthall22@gmail.com>
Date: Thu, 26 Jan 2023 12:31:56 -0500
Subject: [PATCH 012/250] Update cp multiplier to match Lichess implementation

---
 chess/engine.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index f319d09bf..ca7f876ca 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -664,7 +664,9 @@ def _sf12_wins(cp: int, *, ply: int) -> int:
     return int(0.5 + 1000 / (1 + math.exp((a - x) / b)))
 
 def _lichess_raw_wins(cp: int) -> int:
-    return round(1000 / (1 + math.exp(-0.004 * cp)))
+    # https://github.com/lichess-org/lila/pull/11148
+    # https://github.com/lichess-org/lila/blob/2242b0a08faa06e7be5508d338ede7bb09049777/modules/analyse/src/main/WinPercent.scala#L26-L30
+    return round(1000 / (1 + math.exp(-0.00368208 * cp)))
 
 
 class Cp(Score):

From b15d55e955d821a65d05416439e0d04c45be5d9a Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 2 Feb 2023 23:31:24 -0800
Subject: [PATCH 013/250] Send opponent information to Xboard engines

---
 chess/engine.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index ca7f876ca..cfdd58845 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1945,6 +1945,8 @@ def __init__(self) -> None:
         self.options = {
             "random": Option("random", "check", False, None, None, None),
             "computer": Option("computer", "check", False, None, None, None),
+            "name": Option("name", "string", "", None, None, None),
+            "rating": Option("rating", "string", "", None, None, None)
         }
         self.config: Dict[str, ConfigValue] = {}
         self.target_config: Dict[str, ConfigValue] = {}
@@ -2055,7 +2057,7 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping) -> None
 
         # Set up starting position.
         root = board.root()
-        new_options = "random" in options or "computer" in options
+        new_options = any(param in options for param in ("random", "computer", "name", "rating"))
         new_game = self.first_game or self.game != game or new_options or root != self.board.root()
         self.game = game
         self.first_game = False
@@ -2071,6 +2073,10 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping) -> None
 
             if self.config.get("random"):
                 self.send_line("random")
+            if "name" in options and self.features.get("name", True):
+                self.send_line(f"name {options['name']}")
+            if "rating" in options:
+                self.send_line(f"rating {options['rating']}")
             if self.config.get("computer"):
                 self.send_line("computer")
 
@@ -2369,7 +2375,7 @@ def _setoption(self, name: str, value: ConfigValue) -> None:
 
         self.config[name] = value = option.parse(value)
 
-        if name in ["random", "computer"]:
+        if name in ["random", "computer", "name", "rating"]:
             # Applied in _new.
             pass
         elif name in ["memory", "cores"] or name.startswith("egtpath "):

From 8a270859cab13537561998f1dbf601d9b0175e4c Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Fri, 3 Feb 2023 00:46:13 -0800
Subject: [PATCH 014/250] Use configure() method instead of play()

---
 chess/engine.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index cfdd58845..e91eaaba8 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2073,10 +2073,10 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping) -> None
 
             if self.config.get("random"):
                 self.send_line("random")
-            if "name" in options and self.features.get("name", True):
-                self.send_line(f"name {options['name']}")
-            if "rating" in options:
-                self.send_line(f"rating {options['rating']}")
+            if "name" in self.config and self.features.get("name", True):
+                self.send_line(f"name {self.config['name']}")
+            if "rating" in self.config:
+                self.send_line(f"rating {self.config['rating']}")
             if self.config.get("computer"):
                 self.send_line("computer")
 

From 13be99744cbcb00480d08fb5582694c2a3e62469 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Fri, 3 Feb 2023 01:11:37 -0800
Subject: [PATCH 015/250] Fix failing tests

---
 chess/engine.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index e91eaaba8..68f54123c 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2073,9 +2073,9 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping) -> None
 
             if self.config.get("random"):
                 self.send_line("random")
-            if "name" in self.config and self.features.get("name", True):
+            if self.config.get("name") and self.features.get("name", True):
                 self.send_line(f"name {self.config['name']}")
-            if "rating" in self.config:
+            if self.config.get("rating"):
                 self.send_line(f"rating {self.config['rating']}")
             if self.config.get("computer"):
                 self.send_line("computer")

From cb70c4db7f7fb8c49c759a2489d5c82412bb7691 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sat, 4 Feb 2023 20:21:40 -0800
Subject: [PATCH 016/250] Separate rating inputs

---
 chess/engine.py | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 68f54123c..8f21f74ef 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1946,7 +1946,8 @@ def __init__(self) -> None:
             "random": Option("random", "check", False, None, None, None),
             "computer": Option("computer", "check", False, None, None, None),
             "name": Option("name", "string", "", None, None, None),
-            "rating": Option("rating", "string", "", None, None, None)
+            "engine_rating": Option("engine_rating", "spin", "", None, None, None),
+            "opponent_rating": Option("opponent_rating", "spin", "", None, None, None)
         }
         self.config: Dict[str, ConfigValue] = {}
         self.target_config: Dict[str, ConfigValue] = {}
@@ -2057,7 +2058,7 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping) -> None
 
         # Set up starting position.
         root = board.root()
-        new_options = any(param in options for param in ("random", "computer", "name", "rating"))
+        new_options = any(param in options for param in ("random", "computer", "name", "engine_rating", "opponent_rating"))
         new_game = self.first_game or self.game != game or new_options or root != self.board.root()
         self.game = game
         self.first_game = False
@@ -2075,8 +2076,8 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping) -> None
                 self.send_line("random")
             if self.config.get("name") and self.features.get("name", True):
                 self.send_line(f"name {self.config['name']}")
-            if self.config.get("rating"):
-                self.send_line(f"rating {self.config['rating']}")
+            if self.config.get("engine_rating") or self.config.get("opponent_rating"):
+                self.send_line(f"rating {self.config.get('engine_rating') or 0} {self.config.get('opponent_rating') or 0}")
             if self.config.get("computer"):
                 self.send_line("computer")
 
@@ -2375,7 +2376,7 @@ def _setoption(self, name: str, value: ConfigValue) -> None:
 
         self.config[name] = value = option.parse(value)
 
-        if name in ["random", "computer", "name", "rating"]:
+        if name in ["random", "computer", "name", "engine_rating", "opponent_rating"]:
             # Applied in _new.
             pass
         elif name in ["memory", "cores"] or name.startswith("egtpath "):

From 7cf7dc15221925fe13e42cd279b035afdfa1cf94 Mon Sep 17 00:00:00 2001
From: disservin <45608332+Disservin@users.noreply.github.com>
Date: Wed, 15 Feb 2023 21:14:18 +0100
Subject: [PATCH 017/250] strip option args

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index ca7f876ca..59455d503 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1377,7 +1377,7 @@ def _option(self, engine: UciProtocol, arg: str) -> None:
                 current_var = None
                 var = []
 
-                for token in arg.split(" "):
+                for token in arg.strip().split(" "):
                     if token == "name" and not name:
                         current_parameter = "name"
                     elif token == "type" and not type:

From 5859dc20f01df7f862c06811a4d8206b76107cee Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 19 Feb 2023 20:58:01 -0800
Subject: [PATCH 018/250] Support implicit resigning from Xboard engines

An XBoard engine is allowed to resign by putting the string "resign"
somewhere in the comment of a "1-0" or "0-1" command. For example,
"0-1 {White resigns}".

Closes #964
---
 chess/engine.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/chess/engine.py b/chess/engine.py
index ca7f876ca..8e5075fc5 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2197,6 +2197,8 @@ def line_received(self, engine: XBoardProtocol, line: str) -> None:
                         self.play_result.resigned = True
                     self._ping_after_move(engine)
                 elif line.startswith("1-0") or line.startswith("0-1") or line.startswith("1/2-1/2"):
+                    if "resign" in line and not self.result.done():
+                        self.play_result.resigned = True
                     self._ping_after_move(engine)
                 elif line.startswith("#"):
                     pass

From 47db69c6650bbc88109b5f0841fe87cc6a27a5b7 Mon Sep 17 00:00:00 2001
From: Joerg Sonnenberger <joerg@bec.de>
Date: Fri, 24 Feb 2023 01:18:32 +0100
Subject: [PATCH 019/250] SVG output: add option for borders around board and
 diagram

This is useful for printing when the margin is typically white to still
give the visual clues about separation. Option defaults to off.

Also slightly pad the coordinates at the top, so that "f" doesn't run
into the outer border.
---
 chess/svg.py | 76 +++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 55 insertions(+), 21 deletions(-)

diff --git a/chess/svg.py b/chess/svg.py
index 6021e2054..d7aea03d9 100644
--- a/chess/svg.py
+++ b/chess/svg.py
@@ -76,6 +76,8 @@
     "square dark lastmove": "#aaa23b",
     "square light lastmove": "#cdd16a",
     "margin": "#212121",
+    "inner border": "#111",
+    "outer border": "#111",
     "coord": "#e5e5e5",
     "arrow green": "#15781B80",
     "arrow red": "#88202080",
@@ -245,7 +247,8 @@ def board(board: Optional[chess.BaseBoard] = None, *,
           coordinates: bool = True,
           colors: Dict[str, str] = {},
           flipped: bool = False,
-          style: Optional[str] = None) -> str:
+          style: Optional[str] = None,
+          borders: bool = False) -> str:
     """
     Renders a board with pieces and/or selected squares as an SVG image.
 
@@ -267,11 +270,14 @@ def board(board: Optional[chess.BaseBoard] = None, *,
     :param coordinates: Pass ``False`` to disable the coordinate margin.
     :param colors: A dictionary to override default colors. Possible keys are
         ``square light``, ``square dark``, ``square light lastmove``,
-        ``square dark lastmove``, ``margin``, ``coord``, ``arrow green``,
-        ``arrow blue``, ``arrow red``, and ``arrow yellow``. Values should look
-        like ``#ffce9e`` (opaque), or ``#15781B80`` (transparent).
+        ``square dark lastmove``, ``margin``, ``coord``, ``inner border``,
+        ``outer border``, ``arrow green``, ``arrow blue``, ``arrow red``,
+        and ``arrow yellow``. Values should look like ``#ffce9e`` (opaque),
+        or ``#15781B80`` (transparent).
     :param flipped: Pass ``True`` to flip the board.
     :param style: A CSS stylesheet to include in the SVG image.
+    :param borders: Pass ``True`` to enable a border around the board and,
+       (if ``coordinates`` is enabled) the coordinate margin.
 
     >>> import chess
     >>> import chess.svg
@@ -293,8 +299,11 @@ def board(board: Optional[chess.BaseBoard] = None, *,
         Use *orientation* with a color instead of the *flipped* toggle.
     """
     orientation ^= flipped
+    inner_border = 1 if borders and coordinates else 0
+    outer_border = 1 if borders else 0
     margin = 15 if coordinates else 0
-    svg = _svg(8 * SQUARE_SIZE + 2 * margin, size)
+    full_size = 2 * outer_border + 2 * margin + 2 * inner_border + 8 * SQUARE_SIZE
+    svg = _svg(full_size, size)
 
     if style:
         ET.SubElement(svg, "style").text = style
@@ -318,34 +327,59 @@ def board(board: Optional[chess.BaseBoard] = None, *,
     if check is not None:
         defs.append(ET.fromstring(CHECK_GRADIENT))
 
-    # Render coordinates.
-    if coordinates:
-        margin_color, margin_opacity = _select_color(colors, "margin")
+    if outer_border:
+        outer_border_color, outer_border_opacity = _select_color(colors, "outer border")
         ET.SubElement(svg, "rect", _attrs({
             "x": 0,
             "y": 0,
-            "width": 2 * margin + 8 * SQUARE_SIZE,
-            "height": 2 * margin + 8 * SQUARE_SIZE,
+            "width": full_size,
+            "height": full_size,
+            "fill": outer_border_color,
+            "opacity": outer_border_opacity if outer_border_opacity < 1.0 else None,
+        }))
+
+    if margin:
+        margin_color, margin_opacity = _select_color(colors, "margin")
+        ET.SubElement(svg, "rect", _attrs({
+            "x": outer_border,
+            "y": outer_border,
+            "width": full_size - 2 * outer_border,
+            "height": full_size - 2 * outer_border,
             "fill": margin_color,
             "opacity": margin_opacity if margin_opacity < 1.0 else None,
         }))
+
+    if inner_border:
+        inner_border_color, inner_border_opacity = _select_color(colors, "inner border")
+        ET.SubElement(svg, "rect", _attrs({
+            "x": outer_border + margin,
+            "y": outer_border + margin,
+            "width": full_size - 2 * outer_border - 2 * margin,
+            "height": full_size - 2 * outer_border - 2 * margin,
+            "fill": inner_border_color,
+            "opacity": inner_border_opacity if inner_border_opacity < 1.0 else None,
+        }))
+
+    # Render coordinates.
+    if coordinates:
         coord_color, coord_opacity = _select_color(colors, "coord")
         for file_index, file_name in enumerate(chess.FILE_NAMES):
-            x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + margin
-            svg.append(_coord(file_name, x, 0, SQUARE_SIZE, margin, True, margin, color=coord_color, opacity=coord_opacity))
-            svg.append(_coord(file_name, x, margin + 8 * SQUARE_SIZE, SQUARE_SIZE, margin, True, margin, color=coord_color, opacity=coord_opacity))
+            x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + inner_border + margin + outer_border
+            # Keep some padding here to separate the ascender from the border
+            svg.append(_coord(file_name, x, 1, SQUARE_SIZE, margin, True, margin, color=coord_color, opacity=coord_opacity))
+            svg.append(_coord(file_name, x, full_size - outer_border - margin, SQUARE_SIZE, margin, True, margin, color=coord_color, opacity=coord_opacity))
         for rank_index, rank_name in enumerate(chess.RANK_NAMES):
-            y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + margin
+            y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + inner_border + margin + outer_border
             svg.append(_coord(rank_name, 0, y, margin, SQUARE_SIZE, False, margin, color=coord_color, opacity=coord_opacity))
-            svg.append(_coord(rank_name, margin + 8 * SQUARE_SIZE, y, margin, SQUARE_SIZE, False, margin, color=coord_color, opacity=coord_opacity))
+            svg.append(_coord(rank_name, full_size - outer_border - margin, y, margin, SQUARE_SIZE, False, margin, color=coord_color, opacity=coord_opacity))
 
     # Render board.
     for square, bb in enumerate(chess.BB_SQUARES):
         file_index = chess.square_file(square)
         rank_index = chess.square_rank(square)
 
-        x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + margin
-        y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + margin
+        x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + inner_border + margin + outer_border
+        y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + inner_border + margin + outer_border
 
         cls = ["square", "light" if chess.BB_LIGHT_SQUARES & bb else "dark"]
         if lastmove and square in [lastmove.from_square, lastmove.to_square]:
@@ -442,10 +476,10 @@ def board(board: Optional[chess.BaseBoard] = None, *,
         head_file = chess.square_file(head)
         head_rank = chess.square_rank(head)
 
-        xtail = margin + (tail_file + 0.5 if orientation else 7.5 - tail_file) * SQUARE_SIZE
-        ytail = margin + (7.5 - tail_rank if orientation else tail_rank + 0.5) * SQUARE_SIZE
-        xhead = margin + (head_file + 0.5 if orientation else 7.5 - head_file) * SQUARE_SIZE
-        yhead = margin + (7.5 - head_rank if orientation else head_rank + 0.5) * SQUARE_SIZE
+        xtail = outer_border + margin + inner_border + (tail_file + 0.5 if orientation else 7.5 - tail_file) * SQUARE_SIZE
+        ytail = outer_border + margin + inner_border + (7.5 - tail_rank if orientation else tail_rank + 0.5) * SQUARE_SIZE
+        xhead = outer_border + margin + inner_border + (head_file + 0.5 if orientation else 7.5 - head_file) * SQUARE_SIZE
+        yhead = outer_border + margin + inner_border + (7.5 - head_rank if orientation else head_rank + 0.5) * SQUARE_SIZE
 
         if (head_file, head_rank) == (tail_file, tail_rank):
             ET.SubElement(svg, "circle", _attrs({

From 3439cb61bc632b7cb4087d512683f3abf75dfce3 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 24 Feb 2023 19:26:45 +0100
Subject: [PATCH 020/250] Tweak chess.svg.board(..., borders) docs

---
 chess/svg.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/chess/svg.py b/chess/svg.py
index d7aea03d9..dbcbc5321 100644
--- a/chess/svg.py
+++ b/chess/svg.py
@@ -247,8 +247,8 @@ def board(board: Optional[chess.BaseBoard] = None, *,
           coordinates: bool = True,
           colors: Dict[str, str] = {},
           flipped: bool = False,
-          style: Optional[str] = None,
-          borders: bool = False) -> str:
+          borders: bool = False,
+          style: Optional[str] = None) -> str:
     """
     Renders a board with pieces and/or selected squares as an SVG image.
 
@@ -275,9 +275,9 @@ def board(board: Optional[chess.BaseBoard] = None, *,
         and ``arrow yellow``. Values should look like ``#ffce9e`` (opaque),
         or ``#15781B80`` (transparent).
     :param flipped: Pass ``True`` to flip the board.
-    :param style: A CSS stylesheet to include in the SVG image.
     :param borders: Pass ``True`` to enable a border around the board and,
-       (if ``coordinates`` is enabled) the coordinate margin.
+       (if *coordinates* is enabled) the coordinate margin.
+    :param style: A CSS stylesheet to include in the SVG image.
 
     >>> import chess
     >>> import chess.svg

From ac294570687fb38db448e010590ff7f7d3bb89ff Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 24 Feb 2023 20:23:17 +0100
Subject: [PATCH 021/250] Improve chess.pgn error logs (closes #961)

---
 chess/pgn.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 1a01b034e..8750443c5 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -872,12 +872,13 @@ def builder(cls: Type[GameT]) -> GameBuilder[GameT]:
         return GameBuilder(Game=cls)
 
     def __repr__(self) -> str:
-        return "<{} at {:#x} ({!r} vs. {!r}, {!r}{})>".format(
+        return "<{} at {:#x} ({!r} vs. {!r}, {!r} at {!r}{})>".format(
             type(self).__name__,
             id(self),
             self.headers.get("White", "?"),
             self.headers.get("Black", "?"),
             self.headers.get("Date", "????.??.??"),
+            self.headers.get("Site", "?"),
             f", {len(self.errors)} errors" if self.errors else "")
 
 
@@ -1202,7 +1203,7 @@ def handle_error(self, error: Exception) -> None:
         >>>
         >>> game = chess.pgn.read_game(pgn, Visitor=MyGameBuilder)
         """
-        LOGGER.exception("error during pgn parsing")
+        LOGGER.error("%s while parsing %r", error, self.game)
         self.game.errors.append(error)
 
     def result(self) -> GameT:

From 7d0b189084a27136b2e04816fb6d70a37a2a7735 Mon Sep 17 00:00:00 2001
From: Joerg Sonnenberger <joerg@bec.de>
Date: Sat, 25 Feb 2023 00:56:15 +0100
Subject: [PATCH 022/250] SVG: use a stroked rect for borders and margin

This avoids painting the area under the squares. This makes it easier to
use opacity for the field colors.
---
 chess/svg.py | 36 +++++++++++++++++++++---------------
 1 file changed, 21 insertions(+), 15 deletions(-)

diff --git a/chess/svg.py b/chess/svg.py
index dbcbc5321..008b0c87c 100644
--- a/chess/svg.py
+++ b/chess/svg.py
@@ -330,33 +330,39 @@ def board(board: Optional[chess.BaseBoard] = None, *,
     if outer_border:
         outer_border_color, outer_border_opacity = _select_color(colors, "outer border")
         ET.SubElement(svg, "rect", _attrs({
-            "x": 0,
-            "y": 0,
-            "width": full_size,
-            "height": full_size,
-            "fill": outer_border_color,
+            "x": outer_border / 2,
+            "y": outer_border / 2,
+            "width": full_size - outer_border,
+            "height": full_size - outer_border,
+            "fill": "none",
+            "stroke": outer_border_color,
+            "stroke-width": outer_border,
             "opacity": outer_border_opacity if outer_border_opacity < 1.0 else None,
         }))
 
     if margin:
         margin_color, margin_opacity = _select_color(colors, "margin")
         ET.SubElement(svg, "rect", _attrs({
-            "x": outer_border,
-            "y": outer_border,
-            "width": full_size - 2 * outer_border,
-            "height": full_size - 2 * outer_border,
-            "fill": margin_color,
+            "x": outer_border + margin / 2,
+            "y": outer_border + margin / 2,
+            "width": full_size - 2 * outer_border - margin,
+            "height": full_size - 2 * outer_border - margin,
+            "fill": "none",
+            "stroke": margin_color,
+            "stroke-width": margin,
             "opacity": margin_opacity if margin_opacity < 1.0 else None,
         }))
 
     if inner_border:
         inner_border_color, inner_border_opacity = _select_color(colors, "inner border")
         ET.SubElement(svg, "rect", _attrs({
-            "x": outer_border + margin,
-            "y": outer_border + margin,
-            "width": full_size - 2 * outer_border - 2 * margin,
-            "height": full_size - 2 * outer_border - 2 * margin,
-            "fill": inner_border_color,
+            "x": outer_border + margin + inner_border / 2,
+            "y": outer_border + margin + inner_border / 2,
+            "width": full_size - 2 * outer_border - 2 * margin - inner_border,
+            "height": full_size - 2 * outer_border - 2 * margin - inner_border,
+            "fill": "none",
+            "stroke": inner_border_color,
+            "stroke-width": inner_border,
             "opacity": inner_border_opacity if inner_border_opacity < 1.0 else None,
         }))
 

From d264559502ded8b6aa0bdaabd837f9e45f5a71b3 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 28 Feb 2023 00:14:55 -0800
Subject: [PATCH 023/250] Fix default values for rating configuration

---
 chess/engine.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 8f21f74ef..b7551598a 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1946,8 +1946,8 @@ def __init__(self) -> None:
             "random": Option("random", "check", False, None, None, None),
             "computer": Option("computer", "check", False, None, None, None),
             "name": Option("name", "string", "", None, None, None),
-            "engine_rating": Option("engine_rating", "spin", "", None, None, None),
-            "opponent_rating": Option("opponent_rating", "spin", "", None, None, None)
+            "engine_rating": Option("engine_rating", "spin", 0, None, None, None),
+            "opponent_rating": Option("opponent_rating", "spin", 0, None, None, None)
         }
         self.config: Dict[str, ConfigValue] = {}
         self.target_config: Dict[str, ConfigValue] = {}

From fe199c799a01b37852ca2d3473f1af63b29b58f7 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 1 Mar 2023 02:58:23 -0800
Subject: [PATCH 024/250] Create unified API for sending opponent info

Opponent information will be sent after "new" (for XBoard engines) or
"ucinewgame" (for UCI engines).
---
 chess/engine.py | 44 +++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 43 insertions(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index b7551598a..5ff66c6c0 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1121,6 +1121,19 @@ async def configure(self, options: ConfigMapping) -> None:
             (:func:`chess.engine.Option.is_managed()`).
         """
 
+    @abc.abstractmethod
+    async def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[int] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[int] = None) -> None:
+        """
+        Sends the engine information about its opponent. The information will
+        be sent after a new game is announced and before the first move.
+
+        :param opponent_name: Optional. The opponent's name.
+        :param opponent_rating: Optional. The opponent's ELO rating.
+        :param opponent_title: Optional. The opponent's title, such as GM, IM, and the like.
+        :param opponent_is_engine: Optional. Whether or not the opponent is another engine.
+        :param engine_rating: Optional. This engine's own rating. Only used by XBoard engines.
+        """
+
     @abc.abstractmethod
     async def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}) -> PlayResult:
         """
@@ -1435,6 +1448,9 @@ def _isready(self) -> None:
 
     def _ucinewgame(self) -> None:
         self.send_line("ucinewgame")
+        opponent_info = self.config.get("UCI_Opponent")
+        if opponent_info:
+            self.send_line(f"setoption name UCI_Opponent value {opponent_info}")
         self.first_game = False
         self.ponderhit = False
 
@@ -1481,7 +1497,8 @@ def _setoption(self, name: str, value: ConfigValue) -> None:
                 builder.append("value")
                 builder.append(str(value))
 
-            self.send_line(" ".join(builder))
+            if name != "UCI_Opponent":  # sent after ucinewgame
+                self.send_line(" ".join(builder))
             self.config[name] = value
 
     def _configure(self, options: ConfigMapping) -> None:
@@ -1500,6 +1517,13 @@ def start(self, engine: UciProtocol) -> None:
 
         return await self.communicate(UciConfigureCommand)
 
+    async def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[int] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[int] = None) -> None:
+        if opponent_name and "UCI_Opponent" in self.options:
+            rating = opponent_rating or "none"
+            title = opponent_title or "none"
+            player_type = "computer" if opponent_is_engine else "human"
+            return await self.configure({"UCI_Opponent": f"{title} {rating} {player_type} {opponent_name}"})
+
     def _position(self, board: chess.Board) -> None:
         # Select UCI_Variant and UCI_Chess960.
         uci_variant = type(board).uci_variant
@@ -2406,6 +2430,16 @@ def start(self, engine: XBoardProtocol) -> None:
 
         return await self.communicate(XBoardConfigureCommand)
 
+    async def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[str] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[str] = None) -> None:
+        opponent_info = {"engine_rating": engine_rating or 0,
+                         "opponent_rating": opponent_rating or 0,
+                         "computer": opponent_is_engine}
+        
+        if self.features.get("name", True):
+            opponent_info["name"] = opponent_name
+        
+        return await self.configure(opponent_info)
+
     async def quit(self) -> None:
         self.send_line("quit")
         await asyncio.shield(self.returncode)
@@ -2789,6 +2823,14 @@ def configure(self, options: ConfigMapping) -> None:
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
         return future.result()
 
+    def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[int] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[int] = None) -> None:
+        with self._not_shut_down():
+            coro = asyncio.wait_for(
+                self.protocol.send_opponent_information(opponent_name=opponent_name, opponent_rating=opponent_rating, opponent_title=opponent_title, opponent_is_engine=opponent_is_engine, engine_rating=engine_rating),
+                self.timeout)
+            future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
+        return future.result
+        
     def ping(self) -> None:
         with self._not_shut_down():
             coro = asyncio.wait_for(self.protocol.ping(), self.timeout)

From b2b6163c724241a0c1c1d1dac8d94b8a31abb63c Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 1 Mar 2023 03:18:52 -0800
Subject: [PATCH 025/250] Fix errors found by mypy

---
 chess/engine.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 5ff66c6c0..967f8148b 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2430,12 +2430,12 @@ def start(self, engine: XBoardProtocol) -> None:
 
         return await self.communicate(XBoardConfigureCommand)
 
-    async def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[str] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[str] = None) -> None:
-        opponent_info = {"engine_rating": engine_rating or 0,
-                         "opponent_rating": opponent_rating or 0,
-                         "computer": opponent_is_engine}
+    async def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[int] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[int] = None) -> None:
+        opponent_info: Dict[str, Union[int, bool, str]] = {"engine_rating": engine_rating or 0,
+                                                           "opponent_rating": opponent_rating or 0,
+                                                           "computer": opponent_is_engine}
         
-        if self.features.get("name", True):
+        if opponent_name and self.features.get("name", True):
             opponent_info["name"] = opponent_name
         
         return await self.configure(opponent_info)
@@ -2829,7 +2829,7 @@ def send_opponent_information(self, *, opponent_name: Optional[str] = None, oppo
                 self.protocol.send_opponent_information(opponent_name=opponent_name, opponent_rating=opponent_rating, opponent_title=opponent_title, opponent_is_engine=opponent_is_engine, engine_rating=engine_rating),
                 self.timeout)
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
-        return future.result
+        return future.result()
         
     def ping(self) -> None:
         with self._not_shut_down():

From 1a642926f3d6d36d3518b0373abfd0fe0182c8f1 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 1 Mar 2023 03:51:48 -0800
Subject: [PATCH 026/250] Add title to opponent's name, if available

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 967f8148b..43d9cbcb7 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2436,7 +2436,7 @@ async def send_opponent_information(self, *, opponent_name: Optional[str] = None
                                                            "computer": opponent_is_engine}
         
         if opponent_name and self.features.get("name", True):
-            opponent_info["name"] = opponent_name
+            opponent_info["name"] = f"{opponent_title or ''} {opponent_name}".strip()
         
         return await self.configure(opponent_info)
 

From 69a5e0f6be881af449e05eba4d49f5b4a7123118 Mon Sep 17 00:00:00 2001
From: James Braza <jamesbraza@gmail.com>
Date: Sat, 4 Mar 2023 13:07:05 -0800
Subject: [PATCH 027/250] Added clarity on SimpleEngine, module docstrings to
 code examples, and removed >>> from interpreter

---
 docs/engine.rst | 43 +++++++++++++++++++++++++++++++------------
 1 file changed, 31 insertions(+), 12 deletions(-)

diff --git a/docs/engine.rst b/docs/engine.rst
index 979d0e915..4db5014c3 100644
--- a/docs/engine.rst
+++ b/docs/engine.rst
@@ -19,6 +19,7 @@ The preferred way to use the API is with an
 The examples also show a synchronous wrapper
 :class:`~chess.engine.SimpleEngine` that automatically spawns an event loop
 in the background.
+:class:`~chess.engine.SimpleEngine` methods block until there is a result.
 
 Playing
 -------
@@ -27,6 +28,8 @@ Example: Let Stockfish play against itself, 100 milliseconds per move.
 
 .. code:: python
 
+    """Using synchronous engine.SimpleEngine."""
+
     import chess
     import chess.engine
 
@@ -41,6 +44,8 @@ Example: Let Stockfish play against itself, 100 milliseconds per move.
 
 .. code:: python
 
+    """Using async engine."""
+
     import asyncio
     import chess
     import chess.engine
@@ -74,6 +79,8 @@ Example:
 
 .. code:: python
 
+    """Using synchronous engine.SimpleEngine."""
+
     import chess
     import chess.engine
 
@@ -93,6 +100,8 @@ Example:
 
 .. code:: python
 
+    """Using async engine."""
+
     import asyncio
     import chess
     import chess.engine
@@ -139,6 +148,8 @@ Example: Stream information from the engine and stop on an arbitrary condition.
 
 .. code:: python
 
+    """Using synchronous engine.SimpleEngine."""
+
     import chess
     import chess.engine
 
@@ -156,6 +167,8 @@ Example: Stream information from the engine and stop on an arbitrary condition.
 
 .. code:: python
 
+    """Using async engine."""
+
     import asyncio
     import chess
     import chess.engine
@@ -193,21 +206,27 @@ Options
 :func:`~chess.Protocol.analyse()` and
 :func:`~chess.Protocol.analysis()` accept a dictionary of options.
 
->>> import chess.engine
->>>
->>> engine = chess.engine.SimpleEngine.popen_uci("/usr/bin/stockfish")
->>>
->>> # Check available options.
->>> engine.options["Hash"]
-Option(name='Hash', type='spin', default=16, min=1, max=131072, var=[])
->>>
->>> # Set an option.
->>> engine.configure({"Hash": 32})
->>>
->>> # [...]
+.. code:: python
+
+    """Using synchronous engine.SimpleEngine."""
+
+    import chess.engine
+
+    engine = chess.engine.SimpleEngine.popen_uci("/usr/bin/stockfish")
+
+    # Check available options.
+    engine.options["Hash"]
+    # Option(name='Hash', type='spin', default=16, min=1, max=131072, var=[])
+
+    # Set an option.
+    engine.configure({"Hash": 32})
+
+    # [...]
 
 .. code:: python
 
+    """Using async engine."""
+
     import asyncio
     import chess.engine
 

From 0192ebda9a733b25fd4c51ca7758b194c0f2516d Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 6 Mar 2023 21:11:38 +0100
Subject: [PATCH 028/250] Try code-block captions for #973

---
 docs/engine.rst | 40 ++++++++++++++++------------------------
 1 file changed, 16 insertions(+), 24 deletions(-)

diff --git a/docs/engine.rst b/docs/engine.rst
index 4db5014c3..08f8f8f5e 100644
--- a/docs/engine.rst
+++ b/docs/engine.rst
@@ -26,9 +26,8 @@ Playing
 
 Example: Let Stockfish play against itself, 100 milliseconds per move.
 
-.. code:: python
-
-    """Using synchronous engine.SimpleEngine."""
+.. code-block:: python
+   :caption: Using synchronous :class:`~chess.engine.SimpleEngine`
 
     import chess
     import chess.engine
@@ -42,9 +41,8 @@ Example: Let Stockfish play against itself, 100 milliseconds per move.
 
     engine.quit()
 
-.. code:: python
-
-    """Using async engine."""
+.. code-block:: python
+   :caption: Using asyncio
 
     import asyncio
     import chess
@@ -77,9 +75,8 @@ Analysing and evaluating a position
 
 Example:
 
-.. code:: python
-
-    """Using synchronous engine.SimpleEngine."""
+.. code-block:: python
+   :caption: Using synchronous :class:`~chess.engine.SimpleEngine`
 
     import chess
     import chess.engine
@@ -98,9 +95,8 @@ Example:
 
     engine.quit()
 
-.. code:: python
-
-    """Using async engine."""
+.. code-block:: python
+   :caption: Using asyncio
 
     import asyncio
     import chess
@@ -146,9 +142,8 @@ Indefinite or infinite analysis
 
 Example: Stream information from the engine and stop on an arbitrary condition.
 
-.. code:: python
-
-    """Using synchronous engine.SimpleEngine."""
+.. code-block:: python
+   :caption: Using synchronous :class:`~chess.engine.SimpleEngine`
 
     import chess
     import chess.engine
@@ -165,9 +160,8 @@ Example: Stream information from the engine and stop on an arbitrary condition.
 
     engine.quit()
 
-.. code:: python
-
-    """Using async engine."""
+.. code-block:: python
+   :caption: Using asyncio
 
     import asyncio
     import chess
@@ -206,9 +200,8 @@ Options
 :func:`~chess.Protocol.analyse()` and
 :func:`~chess.Protocol.analysis()` accept a dictionary of options.
 
-.. code:: python
-
-    """Using synchronous engine.SimpleEngine."""
+.. code-block:: python
+   :caption: Using synchronous :class:`~chess.engine.SimpleEngine`
 
     import chess.engine
 
@@ -223,9 +216,8 @@ Options
 
     # [...]
 
-.. code:: python
-
-    """Using async engine."""
+.. code-block:: python
+   :caption: Using asyncio
 
     import asyncio
     import chess.engine

From c408d7c7107efad71ec46d6cec0c39569fd8f352 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 7 Mar 2023 20:11:32 -0800
Subject: [PATCH 029/250] Make Opponent class to store opponent information

---
 chess/engine.py | 45 +++++++++++++++++++++++++++------------------
 1 file changed, 27 insertions(+), 18 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 43d9cbcb7..4ec23941f 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -438,6 +438,15 @@ class Info(enum.IntFlag):
 INFO_ALL = Info.ALL
 
 
+@dataclasses.dataclass
+class Opponent:
+    """Used to store information about an engine's opponent."""
+    name: Optional[str]
+    title: Optional[str]
+    rating: Optional[int]
+    is_engine = False
+
+
 class PovScore:
     """A relative :class:`~chess.engine.Score` and the point of view."""
 
@@ -1122,15 +1131,12 @@ async def configure(self, options: ConfigMapping) -> None:
         """
 
     @abc.abstractmethod
-    async def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[int] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[int] = None) -> None:
+    async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
         """
         Sends the engine information about its opponent. The information will
         be sent after a new game is announced and before the first move.
 
-        :param opponent_name: Optional. The opponent's name.
-        :param opponent_rating: Optional. The opponent's ELO rating.
-        :param opponent_title: Optional. The opponent's title, such as GM, IM, and the like.
-        :param opponent_is_engine: Optional. Whether or not the opponent is another engine.
+        :param opponent: Optional. The opponent's information.
         :param engine_rating: Optional. This engine's own rating. Only used by XBoard engines.
         """
 
@@ -1517,12 +1523,12 @@ def start(self, engine: UciProtocol) -> None:
 
         return await self.communicate(UciConfigureCommand)
 
-    async def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[int] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[int] = None) -> None:
-        if opponent_name and "UCI_Opponent" in self.options:
-            rating = opponent_rating or "none"
-            title = opponent_title or "none"
-            player_type = "computer" if opponent_is_engine else "human"
-            return await self.configure({"UCI_Opponent": f"{title} {rating} {player_type} {opponent_name}"})
+    async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
+        if opponent and opponent.name and "UCI_Opponent" in self.options:
+            rating = opponent.rating or "none"
+            title = opponent.title or "none"
+            player_type = "computer" if opponent.is_engine else "human"
+            return await self.configure({"UCI_Opponent": f"{title} {rating} {player_type} {opponent.name}"})
 
     def _position(self, board: chess.Board) -> None:
         # Select UCI_Variant and UCI_Chess960.
@@ -2430,13 +2436,16 @@ def start(self, engine: XBoardProtocol) -> None:
 
         return await self.communicate(XBoardConfigureCommand)
 
-    async def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[int] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[int] = None) -> None:
+    async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
+        if opponent is None:
+            return
+
         opponent_info: Dict[str, Union[int, bool, str]] = {"engine_rating": engine_rating or 0,
-                                                           "opponent_rating": opponent_rating or 0,
-                                                           "computer": opponent_is_engine}
+                                                           "opponent_rating": opponent.rating or 0,
+                                                           "computer": opponent.is_engine}
         
-        if opponent_name and self.features.get("name", True):
-            opponent_info["name"] = f"{opponent_title or ''} {opponent_name}".strip()
+        if opponent.name and self.features.get("name", True):
+            opponent_info["name"] = f"{opponent.title or ''} {opponent.name}".strip()
         
         return await self.configure(opponent_info)
 
@@ -2823,10 +2832,10 @@ def configure(self, options: ConfigMapping) -> None:
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
         return future.result()
 
-    def send_opponent_information(self, *, opponent_name: Optional[str] = None, opponent_rating: Optional[int] = None, opponent_title: Optional[str] = None, opponent_is_engine: bool = False, engine_rating: Optional[int] = None) -> None:
+    def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
         with self._not_shut_down():
             coro = asyncio.wait_for(
-                self.protocol.send_opponent_information(opponent_name=opponent_name, opponent_rating=opponent_rating, opponent_title=opponent_title, opponent_is_engine=opponent_is_engine, engine_rating=engine_rating),
+                self.protocol.send_opponent_information(opponent=opponent, engine_rating=engine_rating),
                 self.timeout)
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
         return future.result()

From dcdd7020956316ec69e519d461713eca81ae22c0 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 7 Mar 2023 20:38:43 -0800
Subject: [PATCH 030/250] Fix default argument and type

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 4ec23941f..feac6fc64 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -444,7 +444,7 @@ class Opponent:
     name: Optional[str]
     title: Optional[str]
     rating: Optional[int]
-    is_engine = False
+    is_engine: Optional[bool]
 
 
 class PovScore:

From 49d31322dc24786de386565cfd94152e6e25884f Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 7 Mar 2023 20:47:01 -0800
Subject: [PATCH 031/250] Coerce entry to bool

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index feac6fc64..ba5c6ff88 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2442,7 +2442,7 @@ async def send_opponent_information(self, *, opponent: Optional[Opponent] = None
 
         opponent_info: Dict[str, Union[int, bool, str]] = {"engine_rating": engine_rating or 0,
                                                            "opponent_rating": opponent.rating or 0,
-                                                           "computer": opponent.is_engine}
+                                                           "computer": opponent.is_engine or False}
         
         if opponent.name and self.features.get("name", True):
             opponent_info["name"] = f"{opponent.title or ''} {opponent.name}".strip()

From 1613a31cb74e9aeb2de140f9e5d9b096ee7a8cfa Mon Sep 17 00:00:00 2001
From: Trevor Bayless <trevorbayless1@gmail.com>
Date: Fri, 10 Mar 2023 08:40:06 -0600
Subject: [PATCH 032/250] Remove unused ponderhit code

---
 chess/engine.py | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 402252f83..d94bc028f 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1577,9 +1577,6 @@ def _go(self, limit: Limit, *, root_moves: Optional[Iterable[chess.Move]] = None
         self.send_line(" ".join(builder))
 
     async def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}) -> PlayResult:
-        same_game = not self.first_game and game == self.game and not options
-        self.last_move = board.move_stack[-1] if (same_game and ponder and board.move_stack) else chess.Move.null()
-
         class UciPlayCommand(BaseCommand[UciProtocol, PlayResult]):
             def __init__(self, engine: UciProtocol):
                 super().__init__(engine)

From 1f975c4000f91b1a54f368b3830641ab7e7ec159 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Mon, 13 Mar 2023 00:11:33 -0700
Subject: [PATCH 033/250] Add opponent information to play() method

---
 chess/engine.py | 61 +++++++++++++++++++++++++++++++------------------
 1 file changed, 39 insertions(+), 22 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index ba5c6ff88..2545b6ea8 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1141,7 +1141,7 @@ async def send_opponent_information(self, *, opponent: Optional[Opponent] = None
         """
 
     @abc.abstractmethod
-    async def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}) -> PlayResult:
+    async def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}, opponent: Optional[Opponent] = None) -> PlayResult:
         """
         Plays a position.
 
@@ -1167,6 +1167,10 @@ async def play(self, board: chess.Board, limit: Limit, *, game: object = None, i
             analysis. The previous configuration will be restored after the
             analysis is complete. You can permanently apply a configuration
             with :func:`~chess.engine.Protocol.configure()`.
+        :param opponent: Optional. Information about a new opponent. Information
+            about the original opponent will be restored once the move is
+            complete. New opponent information can be made permanent with
+            :func:`~chess.engine.Protocol.send_opponent_information()`.
         """
 
     @typing.overload
@@ -1452,9 +1456,9 @@ def _id(self, engine: UciProtocol, arg: str) -> None:
     def _isready(self) -> None:
         self.send_line("isready")
 
-    def _ucinewgame(self) -> None:
+    def _ucinewgame(self, *, opponent: Optional[Opponent] = None) -> None:
         self.send_line("ucinewgame")
-        opponent_info = self.config.get("UCI_Opponent")
+        opponent_info = self._opponent_configuration(opponent=opponent).get("UCI_Opponent") or self.config.get("UCI_Opponent")
         if opponent_info:
             self.send_line(f"setoption name UCI_Opponent value {opponent_info}")
         self.first_game = False
@@ -1523,12 +1527,17 @@ def start(self, engine: UciProtocol) -> None:
 
         return await self.communicate(UciConfigureCommand)
 
-    async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
+    def _opponent_configuration(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> ConfigMapping:
         if opponent and opponent.name and "UCI_Opponent" in self.options:
             rating = opponent.rating or "none"
             title = opponent.title or "none"
             player_type = "computer" if opponent.is_engine else "human"
-            return await self.configure({"UCI_Opponent": f"{title} {rating} {player_type} {opponent.name}"})
+            return {"UCI_Opponent": f"{title} {rating} {player_type} {opponent.name}"}
+        else:
+            return {}
+
+    async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
+        return await self.configure(self._opponent_configuration(opponent=opponent, engine_rating=engine_rating))
 
     def _position(self, board: chess.Board) -> None:
         # Select UCI_Variant and UCI_Chess960.
@@ -1606,7 +1615,7 @@ def _go(self, limit: Limit, *, root_moves: Optional[Iterable[chess.Move]] = None
                 builder.append("0000")
         self.send_line(" ".join(builder))
 
-    async def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}) -> PlayResult:
+    async def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}, opponent: Optional[Opponent] = None) -> PlayResult:
         same_game = not self.first_game and game == self.game and not options
         self.last_move = board.move_stack[-1] if (same_game and ponder and board.move_stack) else chess.Move.null()
 
@@ -1639,9 +1648,9 @@ def start(self, engine: UciProtocol) -> None:
 
                 engine._configure(options)
 
-                if engine.first_game or engine.game != game:
+                if engine.first_game or engine.game != game or opponent:
                     engine.game = game
-                    engine._ucinewgame()
+                    engine._ucinewgame(opponent=opponent)
                     self.sent_isready = True
                     engine._isready()
                 else:
@@ -2083,13 +2092,13 @@ def _variant(self, variant: Optional[str]) -> None:
 
         self.send_line(f"variant {variant}")
 
-    def _new(self, board: chess.Board, game: object, options: ConfigMapping) -> None:
+    def _new(self, board: chess.Board, game: object, options: ConfigMapping, opponent: Optional[Opponent] = None) -> None:
         self._configure(options)
 
         # Set up starting position.
         root = board.root()
         new_options = any(param in options for param in ("random", "computer", "name", "engine_rating", "opponent_rating"))
-        new_game = self.first_game or self.game != game or new_options or root != self.board.root()
+        new_game = self.first_game or self.game != game or new_options or opponent or root != self.board.root()
         self.game = game
         self.first_game = False
         if new_game:
@@ -2104,11 +2113,16 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping) -> None
 
             if self.config.get("random"):
                 self.send_line("random")
-            if self.config.get("name") and self.features.get("name", True):
+            
+            opponent_name = (opponent.name if opponent else None) or self.config.get("name")
+            if opponent_name and self.features.get("name", True):
                 self.send_line(f"name {self.config['name']}")
-            if self.config.get("engine_rating") or self.config.get("opponent_rating"):
-                self.send_line(f"rating {self.config.get('engine_rating') or 0} {self.config.get('opponent_rating') or 0}")
-            if self.config.get("computer"):
+
+            opponent_rating = (opponent.rating if opponent else None) or self.config.get("opponent_rating") or 0
+            if self.config.get("engine_rating") or opponent_rating:
+                self.send_line(f"rating {self.config.get('engine_rating') or 0} {opponent_rating}")
+
+            if (opponent and opponent.is_engine) or self.config.get("computer"):
                 self.send_line("computer")
 
         self.send_line("force")
@@ -2162,7 +2176,7 @@ def line_received(self, engine: XBoardProtocol, line: str) -> None:
 
         return await self.communicate(XBoardPingCommand)
 
-    async def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}) -> PlayResult:
+    async def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}, opponent: Optional[Opponent] = None) -> PlayResult:
         if root_moves is not None:
             raise EngineError("play with root_moves, but xboard supports 'include' only in analysis mode")
 
@@ -2174,7 +2188,7 @@ def start(self, engine: XBoardProtocol) -> None:
                 self.pong_after_ponder: Optional[str] = None
 
                 # Set game, position and configure.
-                engine._new(board, game, options)
+                engine._new(board, game, options, opponent)
 
                 # Limit or time control.
                 clock = limit.white_clock if board.turn else limit.black_clock
@@ -2436,9 +2450,9 @@ def start(self, engine: XBoardProtocol) -> None:
 
         return await self.communicate(XBoardConfigureCommand)
 
-    async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
+    def _opponent_configuration(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> ConfigMapping:
         if opponent is None:
-            return
+            return {}
 
         opponent_info: Dict[str, Union[int, bool, str]] = {"engine_rating": engine_rating or 0,
                                                            "opponent_rating": opponent.rating or 0,
@@ -2446,8 +2460,11 @@ async def send_opponent_information(self, *, opponent: Optional[Opponent] = None
         
         if opponent.name and self.features.get("name", True):
             opponent_info["name"] = f"{opponent.title or ''} {opponent.name}".strip()
-        
-        return await self.configure(opponent_info)
+
+        return opponent_info
+
+    async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
+        return await self.configure(self._opponent_configuration(opponent=opponent, engine_rating=engine_rating))
 
     async def quit(self) -> None:
         self.send_line("quit")
@@ -2846,10 +2863,10 @@ def ping(self) -> None:
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
         return future.result()
 
-    def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}) -> PlayResult:
+    def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}, opponent: Optional[Opponent] = None) -> PlayResult:
         with self._not_shut_down():
             coro = asyncio.wait_for(
-                self.protocol.play(board, limit, game=game, info=info, ponder=ponder, draw_offered=draw_offered, root_moves=root_moves, options=options),
+                self.protocol.play(board, limit, game=game, info=info, ponder=ponder, draw_offered=draw_offered, root_moves=root_moves, options=options, opponent=opponent),
                 self._timeout_for(limit))
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
         return future.result()

From f24517d23e4183ae12b373be267105335250cfad Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 15 Mar 2023 02:15:03 -0700
Subject: [PATCH 034/250] Add tests for play() method with opponent

Requires that opponent information is always and only sent
after a ucinewgame message. Specifying a new opponent
in the play() method results in a new game starting.
---
 test.py | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/test.py b/test.py
index 29ea02749..a9dd5d89b 100755
--- a/test.py
+++ b/test.py
@@ -3271,13 +3271,18 @@ async def main():
             mock.expect("uci", [
                 "option name Hash type spin default 16 min 1 max 33554432",
                 "option name Ponder type check default false",
+                "option name UCI_Opponent type string",
                 "uciok",
             ])
             await protocol.initialize()
 
+            primary_opponent = chess.engine.Opponent("Eliza", None, 3500, True)
+            await protocol.send_opponent_information(opponent=primary_opponent)
+
             # First search.
             mock.expect("setoption name Ponder value true")
             mock.expect("ucinewgame")
+            mock.expect("setoption name UCI_Opponent value none 3500 computer Eliza")
             mock.expect("isready", ["readyok"])
             mock.expect("position startpos")
             mock.expect("go movetime 1000", ["bestmove d2d4 ponder g8f6"])
@@ -3341,6 +3346,33 @@ async def main():
             mock.expect("go ponder movetime 5000")
             await protocol.play(board, chess.engine.Limit(time=5), ponder=True)
 
+            # Ponderhit prevented by new opponent, which starts a new game.
+            board.push(chess.Move.from_uci("c4d5"))
+            board.push(chess.Move.from_uci("e6d5"))
+            mock.expect("stop", ["bestmove c1g5 ponder h7h6"])
+            mock.expect("ucinewgame")
+            mock.expect("setoption name UCI_Opponent value GM 3000 human Guy Chapman")
+            mock.expect("isready", ["readyok"])
+            mock.expect("position startpos moves d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 c4d5 e6d5")
+            mock.expect("go movetime 5000", ["bestmove c1g5 ponder h7h6"])
+            mock.expect("position startpos moves d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 c4d5 e6d5 c1g5 h7h6")
+            mock.expect("go ponder movetime 5000")
+            opponent = chess.engine.Opponent("Guy Chapman", "GM", 3000, False)
+            await protocol.play(board, chess.engine.Limit(time=5), ponder=True, opponent=opponent)
+
+            # Ponderhit prevented by restoration of previous opponent, which again starts a new game.
+            board.push(chess.Move.from_uci("c1g5"))
+            board.push(chess.Move.from_uci("h7h6"))
+            mock.expect("stop", ["bestmove g5h4 ponder b8c6"])
+            mock.expect("ucinewgame")
+            mock.expect("setoption name UCI_Opponent value none 3500 computer Eliza")
+            mock.expect("isready", ["readyok"])
+            mock.expect("position startpos moves d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 c4d5 e6d5 c1g5 h7h6")
+            mock.expect("go movetime 5000", ["bestmove g5h4 ponder b8c6"])
+            mock.expect("position startpos moves d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 c4d5 e6d5 c1g5 h7h6 g5h4 b8c6")
+            mock.expect("go ponder movetime 5000")
+            await protocol.play(board, chess.engine.Limit(time=5), ponder=True)
+
             mock.assert_done()
 
         asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())

From 881160ead51d3a2e6b78b747768b7a5aa047fb9a Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 15 Mar 2023 02:17:06 -0700
Subject: [PATCH 035/250] Conform play() method with opponent to test

If the opponent is changed through the play method, a new
game is started with the current board position. This includes
a blank opponent that follows an opponent specification on
a previous move.
---
 chess/engine.py | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 149b3ff21..04899790b 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1369,6 +1369,8 @@ def __init__(self) -> None:
         self.first_game = True
         self.may_ponderhit: Optional[chess.Board] = None
         self.ponderhit = False
+        self.opponent: Optional[Opponent] = None
+        self.play_opponent: Optional[Opponent] = None
 
     async def initialize(self) -> None:
         class UciInitializeCommand(BaseCommand[UciProtocol, None]):
@@ -1456,11 +1458,23 @@ def _id(self, engine: UciProtocol, arg: str) -> None:
     def _isready(self) -> None:
         self.send_line("isready")
 
-    def _ucinewgame(self, *, opponent: Optional[Opponent] = None) -> None:
-        self.send_line("ucinewgame")
-        opponent_info = self._opponent_configuration(opponent=opponent).get("UCI_Opponent") or self.config.get("UCI_Opponent")
+    def _opponent_changed(self, opponent: Optional[Opponent]) -> bool:
+        if self.play_opponent:
+            return opponent != self.play_opponent
+        elif opponent:
+            return opponent != self.opponent
+        
+        return False
+
+    def _opponent_info(self) -> None:
+        opponent = self.play_opponent or self.opponent
+        opponent_info = self._opponent_configuration(opponent=opponent).get("UCI_Opponent")
         if opponent_info:
             self.send_line(f"setoption name UCI_Opponent value {opponent_info}")
+
+    def _ucinewgame(self) -> None:
+        self.send_line("ucinewgame")
+        self._opponent_info()
         self.first_game = False
         self.ponderhit = False
 
@@ -1537,6 +1551,7 @@ def _opponent_configuration(self, *, opponent: Optional[Opponent] = None, engine
             return {}
 
     async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
+        self.opponent = opponent
         return await self.configure(self._opponent_configuration(opponent=opponent, engine_rating=engine_rating))
 
     def _position(self, board: chess.Board) -> None:
@@ -1623,7 +1638,7 @@ def __init__(self, engine: UciProtocol):
                 # May ponderhit only in the same game and with unchanged target
                 # options. The managed options UCI_AnalyseMode, Ponder, and
                 # MultiPV never change between pondering play commands.
-                engine.may_ponderhit = board if ponder and not engine.first_game and game == engine.game and not engine._changed_options(options) else None
+                engine.may_ponderhit = board if ponder and not engine.first_game and game == engine.game and not engine._changed_options(options) and not engine._opponent_changed(opponent) else None
 
             def start(self, engine: UciProtocol) -> None:
                 self.info: InfoDict = {}
@@ -1645,9 +1660,10 @@ def start(self, engine: UciProtocol) -> None:
 
                 engine._configure(options)
 
-                if engine.first_game or engine.game != game or opponent:
+                if engine.first_game or engine.game != game or engine._opponent_changed(opponent):
                     engine.game = game
-                    engine._ucinewgame(opponent=opponent)
+                    engine.play_opponent = opponent
+                    engine._ucinewgame()
                     self.sent_isready = True
                     engine._isready()
                 else:

From 35beb1f226a2adc8751859275d7c2775d82840c8 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 15 Mar 2023 02:20:40 -0700
Subject: [PATCH 036/250] Update send_opponent_information() docstring

---
 chess/engine.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 04899790b..b0486bf48 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1134,7 +1134,9 @@ async def configure(self, options: ConfigMapping) -> None:
     async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
         """
         Sends the engine information about its opponent. The information will
-        be sent after a new game is announced and before the first move.
+        be sent after a new game is announced and before the first move. This
+        method should be called before the first move of a game--i.e., the
+        first call to :func:`chess.engine.Protocol.play()`.
 
         :param opponent: Optional. The opponent's information.
         :param engine_rating: Optional. This engine's own rating. Only used by XBoard engines.

From 7a5f82ae250a953b42b78886f3e71a13c99f9f00 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 15 Mar 2023 23:08:49 -0700
Subject: [PATCH 037/250] Use Protocol.config to update opponent

Instead of having separate members of the UciProtocol class
incorporate new opponent information into the config
argument to simplify code.
---
 chess/engine.py | 30 ++++++++++++------------------
 1 file changed, 12 insertions(+), 18 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index b0486bf48..5fe95f960 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1371,8 +1371,6 @@ def __init__(self) -> None:
         self.first_game = True
         self.may_ponderhit: Optional[chess.Board] = None
         self.ponderhit = False
-        self.opponent: Optional[Opponent] = None
-        self.play_opponent: Optional[Opponent] = None
 
     async def initialize(self) -> None:
         class UciInitializeCommand(BaseCommand[UciProtocol, None]):
@@ -1460,17 +1458,8 @@ def _id(self, engine: UciProtocol, arg: str) -> None:
     def _isready(self) -> None:
         self.send_line("isready")
 
-    def _opponent_changed(self, opponent: Optional[Opponent]) -> bool:
-        if self.play_opponent:
-            return opponent != self.play_opponent
-        elif opponent:
-            return opponent != self.opponent
-        
-        return False
-
     def _opponent_info(self) -> None:
-        opponent = self.play_opponent or self.opponent
-        opponent_info = self._opponent_configuration(opponent=opponent).get("UCI_Opponent")
+        opponent_info = self.config.get("UCI_Opponent") or self.target_config.get("UCI_Opponent")
         if opponent_info:
             self.send_line(f"setoption name UCI_Opponent value {opponent_info}")
 
@@ -1553,7 +1542,6 @@ def _opponent_configuration(self, *, opponent: Optional[Opponent] = None, engine
             return {}
 
     async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
-        self.opponent = opponent
         return await self.configure(self._opponent_configuration(opponent=opponent, engine_rating=engine_rating))
 
     def _position(self, board: chess.Board) -> None:
@@ -1633,6 +1621,11 @@ def _go(self, limit: Limit, *, root_moves: Optional[Iterable[chess.Move]] = None
         self.send_line(" ".join(builder))
 
     async def play(self, board: chess.Board, limit: Limit, *, game: object = None, info: Info = INFO_NONE, ponder: bool = False, draw_offered: bool = False, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}, opponent: Optional[Opponent] = None) -> PlayResult:
+        new_options: Dict[str, ConfigValue] = {}
+        for name, value in options.items():
+            new_options[name] = value
+        new_options.update(self._opponent_configuration(opponent=opponent))
+
         class UciPlayCommand(BaseCommand[UciProtocol, PlayResult]):
             def __init__(self, engine: UciProtocol):
                 super().__init__(engine)
@@ -1640,7 +1633,7 @@ def __init__(self, engine: UciProtocol):
                 # May ponderhit only in the same game and with unchanged target
                 # options. The managed options UCI_AnalyseMode, Ponder, and
                 # MultiPV never change between pondering play commands.
-                engine.may_ponderhit = board if ponder and not engine.first_game and game == engine.game and not engine._changed_options(options) and not engine._opponent_changed(opponent) else None
+                engine.may_ponderhit = board if ponder and not engine.first_game and game == engine.game and not engine._changed_options(new_options) else None
 
             def start(self, engine: UciProtocol) -> None:
                 self.info: InfoDict = {}
@@ -1653,18 +1646,19 @@ def start(self, engine: UciProtocol) -> None:
                     engine.send_line("ponderhit")
                     return
 
-                if "UCI_AnalyseMode" in engine.options and "UCI_AnalyseMode" not in engine.target_config and all(name.lower() != "uci_analysemode" for name in options):
+                if "UCI_AnalyseMode" in engine.options and "UCI_AnalyseMode" not in engine.target_config and all(name.lower() != "uci_analysemode" for name in new_options):
                     engine._setoption("UCI_AnalyseMode", False)
                 if "Ponder" in engine.options:
                     engine._setoption("Ponder", ponder)
                 if "MultiPV" in engine.options:
                     engine._setoption("MultiPV", engine.options["MultiPV"].default)
 
-                engine._configure(options)
+                new_opponent = new_options.get("UCI_Opponent") or engine.target_config.get("UCI_Opponent")
+                opponent_changed = new_opponent != engine.config.get("UCI_Opponent")
+                engine._configure(new_options)
 
-                if engine.first_game or engine.game != game or engine._opponent_changed(opponent):
+                if engine.first_game or engine.game != game or opponent_changed:
                     engine.game = game
-                    engine.play_opponent = opponent
                     engine._ucinewgame()
                     self.sent_isready = True
                     engine._isready()

From 28aa39a6b8fb64ce75e4024095995e754977b78b Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 16 Mar 2023 00:09:31 -0700
Subject: [PATCH 038/250] Remove options handled by Opponent class

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 5fe95f960..80b757858 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2106,7 +2106,7 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping, opponen
 
         # Set up starting position.
         root = board.root()
-        new_options = any(param in options for param in ("random", "computer", "name", "engine_rating", "opponent_rating"))
+        new_options = any(param in options for param in ("random", "computer"))
         new_game = self.first_game or self.game != game or new_options or opponent or root != self.board.root()
         self.game = game
         self.first_game = False

From 191a1c1f8c1b41f20f35fb757148f7fafab00869 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 16 Mar 2023 00:10:06 -0700
Subject: [PATCH 039/250] XBoard engines don't have to support name option

---
 chess/engine.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 80b757858..4b7b4b976 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1993,7 +1993,6 @@ def __init__(self) -> None:
         self.options = {
             "random": Option("random", "check", False, None, None, None),
             "computer": Option("computer", "check", False, None, None, None),
-            "name": Option("name", "string", "", None, None, None),
             "engine_rating": Option("engine_rating", "spin", 0, None, None, None),
             "opponent_rating": Option("opponent_rating", "spin", 0, None, None, None)
         }

From 3685db1634d545b5198438192687ee0b3ecd8539 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 16 Mar 2023 00:16:54 -0700
Subject: [PATCH 040/250] Protocol.target_config contains current opponent

---
 chess/engine.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 4b7b4b976..c99aa49a9 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2122,15 +2122,15 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping, opponen
             if self.config.get("random"):
                 self.send_line("random")
             
-            opponent_name = (opponent.name if opponent else None) or self.config.get("name")
+            opponent_name = (opponent.name if opponent else None) or self.target_config.get("name")
             if opponent_name and self.features.get("name", True):
-                self.send_line(f"name {self.config['name']}")
+                self.send_line(f"name {opponent_name}")
 
-            opponent_rating = (opponent.rating if opponent else None) or self.config.get("opponent_rating") or 0
-            if self.config.get("engine_rating") or opponent_rating:
-                self.send_line(f"rating {self.config.get('engine_rating') or 0} {opponent_rating}")
+            opponent_rating = (opponent.rating if opponent else None) or self.target_config.get("opponent_rating") or 0
+            if self.target_config.get("engine_rating") or opponent_rating:
+                self.send_line(f"rating {self.target_config.get('engine_rating') or 0} {opponent_rating}")
 
-            if (opponent and opponent.is_engine) or self.config.get("computer"):
+            if (opponent and opponent.is_engine) or (self.target_config.get("computer") if self.config.get("computer") is None else self.config.get("computer")):
                 self.send_line("computer")
 
         self.send_line("force")

From da4106369ccf13b9399e262d5757feb219041a47 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 16 Mar 2023 00:50:56 -0700
Subject: [PATCH 041/250] Revert "XBoard engines don't have to support name
 option"

This reverts commit 191a1c1f8c1b41f20f35fb757148f7fafab00869.

The default is that XBoard engines accept the "name" feature.
---
 chess/engine.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/chess/engine.py b/chess/engine.py
index c99aa49a9..c3b863032 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1993,6 +1993,7 @@ def __init__(self) -> None:
         self.options = {
             "random": Option("random", "check", False, None, None, None),
             "computer": Option("computer", "check", False, None, None, None),
+            "name": Option("name", "string", "", None, None, None),
             "engine_rating": Option("engine_rating", "spin", 0, None, None, None),
             "opponent_rating": Option("opponent_rating", "spin", 0, None, None, None)
         }

From 87ec56a9473a5074a89a592e0a2e68664795bdc6 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 16 Mar 2023 00:52:29 -0700
Subject: [PATCH 042/250] Test sending opponent information to XBoard engine

---
 test.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test.py b/test.py
index a9dd5d89b..42f77ea68 100755
--- a/test.py
+++ b/test.py
@@ -3542,8 +3542,14 @@ async def main():
             board.push_san("d4")
             board.push_san("Nf6")
             board.push_san("c4")
+            opponent = chess.engine.Opponent("Turk", None, 2100, True)
+            engine_rating = 3600
+            await protocol.send_opponent_information(opponent=opponent, engine_rating=engine_rating)
 
             mock.expect("new")
+            mock.expect("name Turk")
+            mock.expect("rating 3600 2100")
+            mock.expect("computer")
             mock.expect("force")
             mock.expect("d2d4")
             mock.expect("g8f6")

From a904617d389e0f179f24ab8e5b4b327d7bf15cdd Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 16 Mar 2023 23:00:54 -0700
Subject: [PATCH 043/250] Complete opponent information

---
 test.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test.py b/test.py
index 42f77ea68..f0ba7d9dc 100755
--- a/test.py
+++ b/test.py
@@ -3542,12 +3542,12 @@ async def main():
             board.push_san("d4")
             board.push_san("Nf6")
             board.push_san("c4")
-            opponent = chess.engine.Opponent("Turk", None, 2100, True)
+            opponent = chess.engine.Opponent("Turk", "Mechanical", 2100, True)
             engine_rating = 3600
             await protocol.send_opponent_information(opponent=opponent, engine_rating=engine_rating)
 
             mock.expect("new")
-            mock.expect("name Turk")
+            mock.expect("name Mechanical Turk")
             mock.expect("rating 3600 2100")
             mock.expect("computer")
             mock.expect("force")

From 06e314531a6c653c537921faf70c2dce2813a57a Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 16 Mar 2023 23:16:31 -0700
Subject: [PATCH 044/250] Move XBoard opponent tests to own method

---
 test.py | 55 +++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 49 insertions(+), 6 deletions(-)

diff --git a/test.py b/test.py
index f0ba7d9dc..56843fde1 100755
--- a/test.py
+++ b/test.py
@@ -3542,14 +3542,8 @@ async def main():
             board.push_san("d4")
             board.push_san("Nf6")
             board.push_san("c4")
-            opponent = chess.engine.Opponent("Turk", "Mechanical", 2100, True)
-            engine_rating = 3600
-            await protocol.send_opponent_information(opponent=opponent, engine_rating=engine_rating)
 
             mock.expect("new")
-            mock.expect("name Mechanical Turk")
-            mock.expect("rating 3600 2100")
-            mock.expect("computer")
             mock.expect("force")
             mock.expect("d2d4")
             mock.expect("g8f6")
@@ -3595,6 +3589,55 @@ async def main():
         asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
+    def test_xboard_opponent(self):
+        async def main():
+            protocol = chess.engine.XBoardProtocol()
+            mock = chess.engine.MockTransport(protocol)
+
+            mock.expect("xboard")
+            mock.expect("protover 2", ["feature ping=1 setboard=1 name=1 done=1"])
+            await protocol.initialize()
+            mock.assert_done()
+
+            limit = chess.engine.Limit(time=5)
+            board = chess.Board()
+            opponent = chess.engine.Opponent("Turk", "Mechanical", 2100, True)
+            await protocol.send_opponent_information(opponent=opponent, engine_rating=3600)
+
+            mock.expect("new")
+            mock.expect("name Mechanical Turk")
+            mock.expect("rating 3600 2100")
+            mock.expect("computer")
+            mock.expect("force")
+            mock.expect("st 5")
+            mock.expect("nopost")
+            mock.expect("easy")
+            mock.expect("go", ["move e2e4"])
+            mock.expect_ping()
+            result = await protocol.play(board, limit, game="game")
+            self.assertEqual(result.move, board.parse_san("e4"))
+            mock.assert_done()
+
+            new_opponent = chess.engine.Opponent("Turochamp", None, 800, True)
+            board.push(result.move)
+            mock.expect("new")
+            mock.expect("name Turochamp")
+            mock.expect("rating 3600 800")
+            mock.expect("computer")
+            mock.expect("force")
+            mock.expect("e2e4")
+            mock.expect("st 5")
+            mock.expect("nopost")
+            mock.expect("easy")
+            mock.expect("go", ["move e7e5"])
+            mock.expect_ping()
+            result = await protocol.play(board, limit, game="game", opponent=new_opponent)
+            self.assertEqual(result.move, board.parse_san("e5"))
+            mock.assert_done()
+
+        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
+        asyncio.run(main())
+
     def test_xboard_analyse(self):
         async def main():
             protocol = chess.engine.XBoardProtocol()

From 7d670a489ae0da06f4a9275f82fcfbd42979bb6e Mon Sep 17 00:00:00 2001
From: snowdrop4 <82846066+snowdrop4@users.noreply.github.com>
Date: Thu, 30 Mar 2023 14:04:14 +0100
Subject: [PATCH 045/250] add BaseVisitor.begin_parse_san() method

---
 chess/pgn.py | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 8750443c5..553b6ece6 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -1043,6 +1043,13 @@ def end_headers(self) -> Optional[SkipType]:
         """Called after visiting game headers."""
         pass
 
+    def begin_parse_san(self, board: chess.Board, san: str) -> Optional[SkipType]:
+        """
+        When the visitor is used by a parser, this is called at the start of
+        each standard algebraic notation detailing a move.
+        """
+        pass
+
     def parse_san(self, board: chess.Board, san: str) -> chess.Move:
         """
         When the visitor is used by a parser, this is called to parse a move
@@ -1682,14 +1689,15 @@ def read_game(handle: TextIO, *, Visitor: Any = GameBuilder) -> Any:
                 visitor.visit_result(token)
             else:
                 # Parse SAN tokens.
-                try:
-                    move = visitor.parse_san(board_stack[-1], token)
-                except ValueError as error:
-                    visitor.handle_error(error)
-                    skip_variation_depth = 1
-                else:
-                    visitor.visit_move(board_stack[-1], move)
-                    board_stack[-1].push(move)
+                if visitor.begin_parse_san(board_stack[-1], token) is not SKIP:
+                    try:
+                        move = visitor.parse_san(board_stack[-1], token)
+                    except ValueError as error:
+                        visitor.handle_error(error)
+                        skip_variation_depth = 1
+                    else:
+                        visitor.visit_move(board_stack[-1], move)
+                        board_stack[-1].push(move)
                 visitor.visit_board(board_stack[-1])
 
         if fresh_line:

From 039239718d4137c1b37cc212238303c27829c957 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 31 Mar 2023 18:20:19 +0200
Subject: [PATCH 046/250] Add another insufficient material test

---
 test.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test.py b/test.py
index 56843fde1..0ca635d43 100755
--- a/test.py
+++ b/test.py
@@ -579,6 +579,7 @@ def _check(board, white, black):
         _check(chess.variant.CrazyhouseBoard("8/8/8/8/3k4/3N~4/3K4/8 w - - 0 1"), False, False)
 
         _check(chess.variant.HordeBoard("8/5k2/8/8/8/4NN2/8/8 w - - 0 1"), True, False)
+        _check(chess.variant.HordeBoard("8/1b5r/1P6/1Pk3q1/1PP5/r1P5/P1P5/2P5 b - - 0 52"), False, False)
 
     def test_promotion_with_check(self):
         board = chess.Board("8/6P1/2p5/1Pqk4/6P1/2P1RKP1/4P1P1/8 w - - 0 1")

From 12c6211360a36fce4cd1f324b76a2caa54a091e1 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 31 Mar 2023 18:42:59 +0200
Subject: [PATCH 047/250] Revert default Syzygy max_fds to 128

Python's mmap.mmap() actually (unnecessarily, with regard to our use
case) duplicates the file descriptor and keeps a copy around for the
lifetime of the memory map.
---
 chess/syzygy.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/syzygy.py b/chess/syzygy.py
index 45eb963d0..2d835b200 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -1483,7 +1483,7 @@ class Tablebase:
     """
     Manages a collection of tablebase files for probing.
     """
-    def __init__(self, *, max_fds: Optional[int] = None, VariantBoard: Type[chess.Board] = chess.Board) -> None:
+    def __init__(self, *, max_fds: Optional[int] = 128, VariantBoard: Type[chess.Board] = chess.Board) -> None:
         self.variant = VariantBoard
 
         self.max_fds = max_fds
@@ -1963,7 +1963,7 @@ def __exit__(self, exc_type: Optional[Type[BaseException]], exc_value: Optional[
         self.close()
 
 
-def open_tablebase(directory: str, *, load_wdl: bool = True, load_dtz: bool = True, max_fds: Optional[int] = None, VariantBoard: Type[chess.Board] = chess.Board) -> Tablebase:
+def open_tablebase(directory: str, *, load_wdl: bool = True, load_dtz: bool = True, max_fds: Optional[int] = 128, VariantBoard: Type[chess.Board] = chess.Board) -> Tablebase:
     """
     Opens a collection of tables for probing. See
     :class:`~chess.syzygy.Tablebase`.

From 363672783357ccfafb23a6917953ad4d61219047 Mon Sep 17 00:00:00 2001
From: Trevor Bayless <trevorbayless1@gmail.com>
Date: Fri, 31 Mar 2023 13:22:13 -0500
Subject: [PATCH 048/250] Add cli-chess

---
 README.rst                |   5 +++++
 docs/images/cli-chess.png | Bin 0 -> 3570 bytes
 2 files changed, 5 insertions(+)
 create mode 100644 docs/images/cli-chess.png

diff --git a/README.rst b/README.rst
index aae81e788..cbacf299e 100644
--- a/README.rst
+++ b/README.rst
@@ -331,6 +331,11 @@ If you like, share interesting things you are using python-chess for, for exampl
 |     :height: 64                                                                                      |                                                                                              |
 |     :target: https://pettingzoo.farama.org/environments/classic/chess/                               | A multi-agent reinforcement learning environment                                             |
 +------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+
+| .. image:: https://github.com/niklasf/python-chess/blob/master/docs/images/cli-chess.png?raw=true    | `cli-chess <https://github.com/trevorbayless/cli-chess>`_                                    |
+|     :width: 64                                                                                       |                                                                                              |
+|     :height: 64                                                                                      |                                                                                              |
+|     :target: https://github.com/trevorbayless/cli-chess                                              | A highly customizable way to play chess in your terminal                                     |
++------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+
 
 * extensions to build engines (search and evaluation) – https://github.com/Mk-Chan/python-chess-engine-extensions
 * a stand-alone chess computer based on DGT board – http://www.picochess.org/
diff --git a/docs/images/cli-chess.png b/docs/images/cli-chess.png
new file mode 100644
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se`^*3{1*5H5XAo<%)oxY^TFbO06cqLazxc|uK)l507*qoM6N<$f<Ph3+W-In

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HcmV?d00001


From 59b60ea6c0dedad9bc43482ce0251d8d15f2f91a Mon Sep 17 00:00:00 2001
From: AInnuganti <130129680+AInnuganti@users.noreply.github.com>
Date: Fri, 7 Apr 2023 19:46:12 -0400
Subject: [PATCH 049/250] Add square_manhattan_distance and
 square_knight_distance

---
 chess/__init__.py | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index e205bba8e..d6ef1d153 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -218,10 +218,41 @@ def square_rank(square: Square) -> int:
 
 def square_distance(a: Square, b: Square) -> int:
     """
-    Gets the distance (i.e., the number of king steps) from square *a* to *b*.
+    Gets the Chebyshev distance (i.e., the number of king steps) from square *a* to *b*.
     """
+    if a == b:
+        return 0;
     return max(abs(square_file(a) - square_file(b)), abs(square_rank(a) - square_rank(b)))
 
+def square_manhattan_distance(a: Square, b: Square) -> int:
+    """
+    Gets the Manhattan/Taxicab distance (i.e., the number of orthogonal king steps) from square *a* to *b*.
+    """
+    if a == b:
+        return 0;
+    return abs(square_file(a) - square_file(b)) + abs(square_rank(a) - square_rank(b))
+
+def square_knight_distance(a: Square, b: Square) -> int:
+    """
+    Gets the Knight distance (i.e., the number of knight moves) from square *a* to *b*.
+    """
+    if a == b:
+        return 0;
+
+    dx = abs(square_file(a) - square_file(b))
+    dy = abs(square_rank(a) - square_rank(b))
+
+    if dx + dy == 1:
+        return 3
+    elif dx == dy == 2:
+        return 4
+    elif dx == dy == 1:
+        if 1 << a & BB_CORNERS or 1 << b & BB_CORNERS: # Special case only for corner squares
+            return 4
+
+    m = math.ceil(max(dx / 2, dy / 2, (dx + dy) / 3))
+    return m + ((m + dx + dy) % 2)
+
 def square_mirror(square: Square) -> Square:
     """Mirrors the square vertically."""
     return square ^ 0x38

From 9cc4372dce66eb4757eb3ae9adc676e3965a152e Mon Sep 17 00:00:00 2001
From: AInnuganti <130129680+AInnuganti@users.noreply.github.com>
Date: Sun, 9 Apr 2023 14:42:34 -0400
Subject: [PATCH 050/250] Made requested changes

---
 chess/__init__.py | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index d6ef1d153..980dc34b4 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -220,25 +220,18 @@ def square_distance(a: Square, b: Square) -> int:
     """
     Gets the Chebyshev distance (i.e., the number of king steps) from square *a* to *b*.
     """
-    if a == b:
-        return 0;
     return max(abs(square_file(a) - square_file(b)), abs(square_rank(a) - square_rank(b)))
 
 def square_manhattan_distance(a: Square, b: Square) -> int:
     """
     Gets the Manhattan/Taxicab distance (i.e., the number of orthogonal king steps) from square *a* to *b*.
     """
-    if a == b:
-        return 0;
     return abs(square_file(a) - square_file(b)) + abs(square_rank(a) - square_rank(b))
 
 def square_knight_distance(a: Square, b: Square) -> int:
     """
     Gets the Knight distance (i.e., the number of knight moves) from square *a* to *b*.
     """
-    if a == b:
-        return 0;
-
     dx = abs(square_file(a) - square_file(b))
     dy = abs(square_rank(a) - square_rank(b))
 
@@ -247,7 +240,7 @@ def square_knight_distance(a: Square, b: Square) -> int:
     elif dx == dy == 2:
         return 4
     elif dx == dy == 1:
-        if 1 << a & BB_CORNERS or 1 << b & BB_CORNERS: # Special case only for corner squares
+        if BB_SQUARES[a] & BB_CORNERS or BB_SQUARES[b] & BB_CORNERS: # Special case only for corner squares
             return 4
 
     m = math.ceil(max(dx / 2, dy / 2, (dx + dy) / 3))

From a2f1588e20123f946b1eaf98492b35e87739e26d Mon Sep 17 00:00:00 2001
From: AInnuganti <130129680+AInnuganti@users.noreply.github.com>
Date: Sat, 15 Apr 2023 23:32:50 -0400
Subject: [PATCH 051/250] Add tests for new distance functions

---
 test.py | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/test.py b/test.py
index 0ca635d43..17dec2916 100755
--- a/test.py
+++ b/test.py
@@ -93,6 +93,31 @@ def test_parse_square(self):
         with self.assertRaises(ValueError):
             self.assertEqual(chess.parse_square("a0"))
 
+    def test_square_distance(self):
+        self.assertEqual(chess.square_distance(chess.A1, chess.A1), 0)
+        self.assertEqual(chess.square_distance(chess.A1, chess.H8), 7)
+        self.assertEqual(chess.square_distance(chess.E1, chess.E8), 7)
+        self.assertEqual(chess.square_distance(chess.A4, chess.H4), 7)
+        self.assertEqual(chess.square_distance(chess.D4, chess.E5), 1)
+
+    def test_square_manhattan_distance(self):
+        self.assertEqual(chess.square_manhattan_distance(chess.A1, chess.A1), 0)
+        self.assertEqual(chess.square_manhattan_distance(chess.A1, chess.H8), 14)
+        self.assertEqual(chess.square_manhattan_distance(chess.E1, chess.E8), 7)
+        self.assertEqual(chess.square_manhattan_distance(chess.A4, chess.H4), 7)
+        self.assertEqual(chess.square_manhattan_distance(chess.D4, chess.E5), 2)
+
+    def test_square_knight_distance(self):
+        self.assertEqual(chess.square_knight_distance(chess.A1, chess.A1), 0)
+        self.assertEqual(chess.square_knight_distance(chess.A1, chess.H8), 6)
+        self.assertEqual(chess.square_knight_distance(chess.G1, chess.F3), 1)
+        self.assertEqual(chess.square_knight_distance(chess.E1, chess.E8), 5)
+        self.assertEqual(chess.square_knight_distance(chess.A4, chess.H4), 5)
+        self.assertEqual(chess.square_knight_distance(chess.A1, chess.B1), 3)
+        self.assertEqual(chess.square_knight_distance(chess.A1, chess.C3), 4)
+        self.assertEqual(chess.square_knight_distance(chess.A1, chess.B2), 4)
+        self.assertEqual(chess.square_knight_distance(chess.C1, chess.B2), 2)
+
 
 class MoveTestCase(unittest.TestCase):
 

From d5da1d5849fdd85f7fc19d49d57cc38729906e6a Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 16 Apr 2023 09:42:15 +0200
Subject: [PATCH 052/250] Add new distance functions to docs (#986)

---
 docs/core.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/core.rst b/docs/core.rst
index d5790820a..8bb045bbb 100644
--- a/docs/core.rst
+++ b/docs/core.rst
@@ -85,6 +85,10 @@ and so on to
 
 .. autofunction:: chess.square_distance
 
+.. autofunction:: chess.square_manhattan_distance
+
+.. autofunction:: chess.square_knight_distance
+
 .. autofunction:: chess.square_mirror
 
 Pieces

From bd371f68b631499d9107c20f1f785b111c547f62 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 22 Apr 2023 20:43:01 +0200
Subject: [PATCH 053/250] Remove SVG version and baseProfile

https://github.com/niklasf/python-chess/discussions/992
---
 chess/svg.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/chess/svg.py b/chess/svg.py
index 008b0c87c..94ae21569 100644
--- a/chess/svg.py
+++ b/chess/svg.py
@@ -169,8 +169,6 @@ def _svg(viewbox: int, size: Optional[int]) -> ET.Element:
     svg = ET.Element("svg", {
         "xmlns": "http://www.w3.org/2000/svg",
         "xmlns:xlink": "http://www.w3.org/1999/xlink",
-        "version": "1.2",
-        "baseProfile": "tiny",
         "viewBox": f"0 0 {viewbox:d} {viewbox:d}",
     })
 

From dc2e284e9ddf909720a2bbe32e994269d4168244 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Mon, 24 Apr 2023 20:58:29 -0700
Subject: [PATCH 054/250] Send the final result of a game to engines

UCI engines receive the final board position.

Xboard engines receive the final move of the game and a
message describing the winner and reason for the game
ending.
---
 chess/engine.py | 68 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/chess/engine.py b/chess/engine.py
index c3b863032..afb4c9d8a 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1246,6 +1246,27 @@ async def analysis(self, board: chess.Board, limit: Optional[Limit] = None, *, m
         and stopping the analysis at any time.
         """
 
+    @abc.abstractmethod
+    async def send_game_result(self, board: chess.Board, winner: Optional[Color] = None, game_ending: Optional[str] = None, game_complete: bool = True) -> None:
+        """
+        Sends the engine the result of the game.
+
+        UCI engines only recieve the final position of the board. XBoard engines
+        receive the final moves and a line of the form "result <winner> {<ending>}",
+        where <winner> is one of "1-0", "0-1", "1/2-1/2", or "*" to indicate white
+        won, black won, draw, or adjournment, respectively.
+
+        :param board: The final state of the board.
+        :param winner: Optional. Specify the winner of the game. This is useful
+            if the result of the game is not evident from the board--e.g., time
+            forfeiture or draw by agreement.
+        :param game_ending: Optional. Text describing the reason for the game
+            ending. Similarly to the winner paramter, this overrides any game
+            result derivable from the board.
+        :param game_complete: Optional. Whether the game is complete or may resume
+            at a later time.
+        """
+
     @abc.abstractmethod
     async def quit(self) -> None:
         """Asks the engine to shut down."""
@@ -1797,6 +1818,15 @@ def engine_terminated(self, engine: UciProtocol, exc: Exception) -> None:
 
         return await self.communicate(UciAnalysisCommand)
 
+    async def send_game_result(self, board: chess.Board, winner: Optional[Color] = None, game_ending: Optional[str] = None, game_complete: bool = True) -> None:
+        class UciGameResultCommand(BaseCommand[UciProtocol, None]):
+            def start(self, engine: UciProtocol) -> None:
+                engine._position(board)  # Send final board position
+                self.result.set_result(None)
+                self.set_finished()
+
+        return await self.communicate(UciGameResultCommand)
+
     async def quit(self) -> None:
         self.send_line("quit")
         await asyncio.shield(self.returncode)
@@ -2477,6 +2507,38 @@ def _opponent_configuration(self, *, opponent: Optional[Opponent] = None, engine
     async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
         return await self.configure(self._opponent_configuration(opponent=opponent, engine_rating=engine_rating))
 
+    async def send_game_result(self, board: chess.Board, winner: Optional[Color] = None, game_ending: Optional[str] = None, game_complete: bool = True) -> None:
+        class XBoardGameResultCommand(BaseCommand[XBoardProtocol, None]):
+            def start(self, engine: XBoardProtocol) -> None:
+                engine._new(board, engine.game, {})  # Send final moves to engine.
+                
+                outcome = board.outcome(claim_draw=True)
+
+                if not game_complete:
+                    result = "*"
+                    ending = game_ending or "Game adjourned"
+                elif winner is not None or game_ending:
+                    result = "1-0" if winner == chess.WHITE else ("0-1" if winner == chess.BLACK else "1/2-1/2")
+                    ending = game_ending or ""
+                elif outcome is not None and outcome.winner is not None:
+                    result = outcome.result()
+                    winning_color = "White" if outcome.winner == chess.WHITE else "Black"
+                    is_checkmate = outcome.termination == chess.Termination.CHECKMATE
+                    ending = f"{winning_color} {'mates' if is_checkmate else 'variant win'}"
+                elif outcome is not None:
+                    result = outcome.result()
+                    ending = outcome.termination.name.capitalize().replace("_", " ")
+                else:
+                    result = "*"
+                    ending = ""
+
+                ending_text = f"{{{ending}}}" if ending else ""
+                engine.send_line(f"result {result} {ending_text}".strip())
+                self.result.set_result(None)
+                self.set_finished()
+
+        return await self.communicate(XBoardGameResultCommand)
+
     async def quit(self) -> None:
         self.send_line("quit")
         await asyncio.shield(self.returncode)
@@ -2904,6 +2966,12 @@ def analysis(self, board: chess.Board, limit: Optional[Limit] = None, *, multipv
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
         return SimpleAnalysisResult(self, future.result())
 
+    def send_game_result(self, board: chess.Board, winner: Optional[Color] = None, game_ending: Optional[str] = None, game_complete: bool = True) -> None:
+        with self._not_shut_down():
+            coro = asyncio.wait_for(self.protocol.send_game_result(board, winner, game_ending, game_complete), self.timeout)
+            future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
+        return future.result()
+
     def quit(self) -> None:
         with self._not_shut_down():
             coro = asyncio.wait_for(self.protocol.quit(), self.timeout)

From 91996e2d9043a8eab3885e1fa30cd93ec5da80b2 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 25 Apr 2023 21:14:26 -0700
Subject: [PATCH 055/250] Do nothing for UCI engines

UCI engines do not expect to get a message once a game ends.
---
 chess/engine.py | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index afb4c9d8a..75dd3633b 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1819,13 +1819,7 @@ def engine_terminated(self, engine: UciProtocol, exc: Exception) -> None:
         return await self.communicate(UciAnalysisCommand)
 
     async def send_game_result(self, board: chess.Board, winner: Optional[Color] = None, game_ending: Optional[str] = None, game_complete: bool = True) -> None:
-        class UciGameResultCommand(BaseCommand[UciProtocol, None]):
-            def start(self, engine: UciProtocol) -> None:
-                engine._position(board)  # Send final board position
-                self.result.set_result(None)
-                self.set_finished()
-
-        return await self.communicate(UciGameResultCommand)
+        pass
 
     async def quit(self) -> None:
         self.send_line("quit")

From ee210f4a9fbc9286863b3f495259708b95bd7846 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 25 Apr 2023 21:15:00 -0700
Subject: [PATCH 056/250] Make default message for incomplete game blank

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 75dd3633b..314dfc753 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2510,7 +2510,7 @@ def start(self, engine: XBoardProtocol) -> None:
 
                 if not game_complete:
                     result = "*"
-                    ending = game_ending or "Game adjourned"
+                    ending = game_ending or ""
                 elif winner is not None or game_ending:
                     result = "1-0" if winner == chess.WHITE else ("0-1" if winner == chess.BLACK else "1/2-1/2")
                     ending = game_ending or ""

From f4d73525c97d4a4aa604481b4e8a37b55fb2caf8 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 25 Apr 2023 21:45:48 -0700
Subject: [PATCH 057/250] Tests for sending game result

---
 test.py | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/test.py b/test.py
index 17dec2916..b52f38590 100755
--- a/test.py
+++ b/test.py
@@ -3664,6 +3664,80 @@ async def main():
         asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
+    def test_xboard_result(self):
+        async def main():
+            protocol = chess.engine.XBoardProtocol()
+            mock = chess.engine.MockTransport(protocol)
+
+            mock.expect("xboard")
+            mock.expect("protover 2", ["feature ping=1 setboard=1 done=1"])
+            await protocol.initialize()
+            mock.assert_done()
+
+            limit = chess.engine.Limit(time=5)
+            checkmate_board = chess.Board("k7/7R/6R1/8/8/8/8/K7 w - - 0 1")
+
+            mock.expect("new")
+            mock.expect("force")
+            mock.expect("setboard k7/7R/6R1/8/8/8/8/K7 w - - 0 1")
+            mock.expect("st 5")
+            mock.expect("nopost")
+            mock.expect("easy")
+            mock.expect("go", ["move g6g8"])
+            mock.expect_ping()
+            mock.expect("force")
+            mock.expect("result 1-0 {White mates}")
+            result = await protocol.play(checkmate_board, limit, game="checkmate")
+            self.assertEqual(result.move, checkmate_board.parse_uci("g6g8"))
+            checkmate_board.push(result.move)
+            self.assertTrue(checkmate_board.is_checkmate())
+            await protocol.send_game_result(checkmate_board)
+            mock.assert_done()
+
+            unfinished_board = chess.Board()
+            mock.expect("new")
+            mock.expect("force")
+            mock.expect("st 5")
+            mock.expect("nopost")
+            mock.expect("easy")
+            mock.expect("go", ["move e2e4"])
+            mock.expect_ping()
+            mock.expect("force")
+            mock.expect("result *")
+            result = await protocol.play(unfinished_board, limit, game="unfinished")
+            self.assertEqual(result.move, unfinished_board.parse_uci("e2e4"))
+            unfinished_board.push(result.move)
+            await protocol.send_game_result(unfinished_board, game_complete=False)
+            mock.assert_done()
+
+            timeout_board = chess.Board()
+            mock.expect("new")
+            mock.expect("force")
+            mock.expect("st 5")
+            mock.expect("nopost")
+            mock.expect("easy")
+            mock.expect("go", ["move e2e4"])
+            mock.expect_ping()
+            mock.expect("force")
+            mock.expect("result 0-1 {Time forfeiture}")
+            result = await protocol.play(timeout_board, limit, game="timeout")
+            self.assertEqual(result.move, timeout_board.parse_uci("e2e4"))
+            timeout_board.push(result.move)
+            await protocol.send_game_result(timeout_board, chess.BLACK, "Time forfeiture")
+            mock.assert_done()
+
+            material_board = chess.Board("k7/8/8/8/8/8/8/K7 b - - 0 1")
+            self.assertTrue(material_board.is_insufficient_material())
+            mock.expect("new")
+            mock.expect("force")
+            mock.expect("setboard k7/8/8/8/8/8/8/K7 b - - 0 1")
+            mock.expect("result 1/2-1/2 {Insufficient material}")
+            await protocol.send_game_result(material_board)
+            mock.assert_done()
+
+        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
+        asyncio.run(main())
+
     def test_xboard_analyse(self):
         async def main():
             protocol = chess.engine.XBoardProtocol()

From e5d8c6d9232037e616ee8a540ea73b3247560049 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 25 Apr 2023 21:48:34 -0700
Subject: [PATCH 058/250] Edit parameter comment

---
 chess/engine.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 314dfc753..0f91bca3f 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1263,8 +1263,7 @@ async def send_game_result(self, board: chess.Board, winner: Optional[Color] = N
         :param game_ending: Optional. Text describing the reason for the game
             ending. Similarly to the winner paramter, this overrides any game
             result derivable from the board.
-        :param game_complete: Optional. Whether the game is complete or may resume
-            at a later time.
+        :param game_complete: Optional. Whether the game reached completion.
         """
 
     @abc.abstractmethod

From 0512fe01c32cef2bdcbb46d9afe15ecae98eadd4 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 25 Apr 2023 22:42:56 -0700
Subject: [PATCH 059/250] Add test for do-nothing UCI send_game_result()

---
 test.py | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/test.py b/test.py
index b52f38590..fd3b93ed8 100755
--- a/test.py
+++ b/test.py
@@ -3465,6 +3465,32 @@ def test_uci_info(self):
         info = chess.engine._parse_uci_info("depth 1 seldepth 2 time 16 nodes 1 score cp 72 wdl 249 747 4 hashfull 0 nps 400 tbhits 0 multipv 1", board)
         self.assertEqual(info["wdl"], (249, 747, 4))
 
+    def test_uci_result(self):
+        async def main():
+            protocol = chess.engine.UciProtocol()
+            mock = chess.engine.MockTransport(protocol)
+
+            mock.expect("uci", ["uciok"])
+            await protocol.initialize()
+            mock.assert_done()
+
+            limit = chess.engine.Limit(time=5)
+            checkmate_board = chess.Board("k7/7R/6R1/8/8/8/8/K7 w - - 0 1")
+
+            mock.expect("ucinewgame")
+            mock.expect("isready", ["readyok"])
+            mock.expect("position fen k7/7R/6R1/8/8/8/8/K7 w - - 0 1")
+            mock.expect("go movetime 5000", ["bestmove g6g8"])
+            result = await protocol.play(checkmate_board, limit, game="checkmate")
+            self.assertEqual(result.move, checkmate_board.parse_uci("g6g8"))
+            checkmate_board.push(result.move)
+            self.assertTrue(checkmate_board.is_checkmate())
+            await protocol.send_game_result(checkmate_board)
+            mock.assert_done()
+
+        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
+        asyncio.run(main())
+
     def test_hiarcs_bestmove(self):
         async def main():
             protocol = chess.engine.UciProtocol()

From 885d59f708423fd3a1f18ae1fb9a35532dc51293 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 25 Apr 2023 22:48:10 -0700
Subject: [PATCH 060/250] Delete unneeded parentheses

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 0f91bca3f..ae33db688 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2511,7 +2511,7 @@ def start(self, engine: XBoardProtocol) -> None:
                     result = "*"
                     ending = game_ending or ""
                 elif winner is not None or game_ending:
-                    result = "1-0" if winner == chess.WHITE else ("0-1" if winner == chess.BLACK else "1/2-1/2")
+                    result = "1-0" if winner == chess.WHITE else "0-1" if winner == chess.BLACK else "1/2-1/2"
                     ending = game_ending or ""
                 elif outcome is not None and outcome.winner is not None:
                     result = outcome.result()

From 622f3a0b8cbf7098082dca20f86d98a2a5e5f171 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 29 Apr 2023 23:42:00 +0200
Subject: [PATCH 061/250] Add perft with impossible castling rights

---
 examples/perft/tricky.perft | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/examples/perft/tricky.perft b/examples/perft/tricky.perft
index b3cca9fd2..6a572a330 100644
--- a/examples/perft/tricky.perft
+++ b/examples/perft/tricky.perft
@@ -129,3 +129,15 @@ epd rnbqk1nr/bb3p1p/1q2r3/2pPp3/3P4/7P/1PP1NpPP/R1BQKBNR w KQkq c6
 perft 1 2
 perft 2 92
 perft 3 2528
+
+#
+# Impossible castling rights
+#
+
+id asymmetrical-and-king-on-h
+epd r2r3k/p7/3p4/8/8/P6P/8/R3K2R b KQq -
+perft 1 14
+perft 2 206
+perft 3 3672
+perft 4 64639
+perft 5 1320962

From 4889834dc0f1a2eb7f56440c87d4d1490c5f3f4b Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sat, 29 Apr 2023 21:47:08 -0700
Subject: [PATCH 062/250] Add optional identifier to Limit instances

This new field in the Limit class is used to signal when the time
control for a game has changed. XBoard engines expect to
receive a `level` or `st` command to indicate the time control
at the start of the game, and then only `time` and `otim`
commands before each subsequent move to update the engine's
internal clocks. The `level` and `st` commands should only be
resent when the time control changes--like in FIDE tournament
time controls. During a single time control, the same `clock_id`
should be used for every Limit instance. This field has a similar
function to the `game` parameter of the `play()` method.
---
 chess/engine.py | 25 +++++++++++++++++++------
 test.py         | 21 +++++++++++++++++++--
 2 files changed, 38 insertions(+), 8 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index c3b863032..722d2be36 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -332,6 +332,14 @@ class Limit:
     *white_clock* and *black_clock* are, then it is sudden death.
     """
 
+    clock_id: object = None
+    """
+    An identifier to use with XBoard engines to signal that the time
+    control has changed. When this field changes, Xboard engines are
+    send level or st commands as appropriate. Otherwise, only time
+    and otim commands are sent to update the engine's clock.
+    """
+
     def __repr__(self) -> str:
         # Like default __repr__, but without None values.
         return "{}({})".format(
@@ -2001,6 +2009,7 @@ def __init__(self) -> None:
         self.target_config: Dict[str, ConfigValue] = {}
         self.board = chess.Board()
         self.game: object = None
+        self.clock_id: object = None
         self.first_game = True
 
     async def initialize(self) -> None:
@@ -2202,10 +2211,9 @@ def start(self, engine: XBoardProtocol) -> None:
                 # Limit or time control.
                 clock = limit.white_clock if board.turn else limit.black_clock
                 increment = limit.white_inc if board.turn else limit.black_inc
-                if limit.remaining_moves or clock is not None or increment is not None:
-                    base_mins, base_secs = divmod(int(clock or 0), 60)
-                    engine.send_line(f"level {limit.remaining_moves or 0} {base_mins}:{base_secs:02d} {increment or 0}")
-
+                if limit.clock_id is None or limit.clock_id != engine.clock_id:
+                    self._send_time_control(engine, clock, increment)
+                engine.clock_id = limit.clock_id
                 if limit.nodes is not None:
                     if limit.time is not None or limit.white_clock is not None or limit.black_clock is not None or increment is not None:
                         raise EngineError("xboard does not support mixing node limits with time limits")
@@ -2217,8 +2225,6 @@ def start(self, engine: XBoardProtocol) -> None:
 
                     engine.send_line("nps 1")
                     engine.send_line(f"st {max(1, int(limit.nodes))}")
-                if limit.time is not None:
-                    engine.send_line(f"st {max(0.01, limit.time)}")
                 if limit.depth is not None:
                     engine.send_line(f"sd {max(1, int(limit.depth))}")
                 if limit.white_clock is not None:
@@ -2270,6 +2276,13 @@ def line_received(self, engine: XBoardProtocol, line: str) -> None:
                 else:
                     LOGGER.warning("%s: Unexpected engine output: %r", engine, line)
 
+            def _send_time_control(self, engine: XBoardProtocol, clock: Optional[float], increment: Optional[float]) -> None:
+                if limit.remaining_moves or clock is not None or increment is not None:
+                    base_mins, base_secs = divmod(int(clock or 0), 60)
+                    engine.send_line(f"level {limit.remaining_moves or 0} {base_mins}:{base_secs:02d} {increment or 0}")
+                if limit.time is not None:
+                    engine.send_line(f"st {max(0.01, limit.time)}")
+
             def _post(self, engine: XBoardProtocol, line: str) -> None:
                 if not self.result.done():
                     self.play_result.info = _parse_xboard_post(line, engine.board, info)
diff --git a/test.py b/test.py
index 17dec2916..d6d0b3926 100755
--- a/test.py
+++ b/test.py
@@ -3713,7 +3713,9 @@ async def main():
             mock.assert_done()
 
             limit = chess.engine.Limit(black_clock=65, white_clock=100,
-                                       black_inc=4, white_inc=8)
+                                       black_inc=4, white_inc=8,
+                                       clock_id="xboard level")
+            board = chess.Board()
             mock.expect("new")
             mock.expect("force")
             mock.expect("level 0 1:40 8")
@@ -3723,10 +3725,25 @@ async def main():
             mock.expect("easy")
             mock.expect("go", ["move e2e4"])
             mock.expect_ping()
-            result = await protocol.play(chess.Board(), limit)
+            result = await protocol.play(board, limit)
             self.assertEqual(result.move, chess.Move.from_uci("e2e4"))
             mock.assert_done()
 
+            board.push(result.move)
+            board.push_uci("e7e5")
+
+            mock.expect("force")
+            mock.expect("e7e5")
+            mock.expect("time 10000")
+            mock.expect("otim 6500")
+            mock.expect("nopost")
+            mock.expect("easy")
+            mock.expect("go", ["move d2d4"])
+            mock.expect_ping()
+            result = await protocol.play(board, limit)
+            self.assertEqual(result.move, chess.Move.from_uci("d2d4"))
+            mock.assert_done()
+
         asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 

From 13ef9447ae2a6063b06200965f923fc34a872ba5 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 30 Apr 2023 11:59:51 +0200
Subject: [PATCH 063/250] Try Sphinx 7.0.0

---
 docs/requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/requirements.txt b/docs/requirements.txt
index 8f65fe1fd..526215aee 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1 @@
-Sphinx==6.1.2
+Sphinx==7.0.0

From e73121a0caea542bc493ad72b59d7fbc17e02633 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 30 Apr 2023 13:37:13 +0200
Subject: [PATCH 064/250] Revert "Try Sphinx 7.0.0"

This reverts commit 13ef9447ae2a6063b06200965f923fc34a872ba5.
---
 docs/requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/requirements.txt b/docs/requirements.txt
index 526215aee..8f65fe1fd 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1 @@
-Sphinx==7.0.0
+Sphinx==6.1.2

From 29bf03e1b030f761589ace9fe75da5152853f6c4 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 1 May 2023 13:09:36 +0200
Subject: [PATCH 065/250] Add perft with pinned ep capturer and impossible
 check

---
 examples/perft/tricky.perft | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/examples/perft/tricky.perft b/examples/perft/tricky.perft
index 6a572a330..2510a9aea 100644
--- a/examples/perft/tricky.perft
+++ b/examples/perft/tricky.perft
@@ -124,6 +124,12 @@ perft 1 6
 perft 2 121
 perft 3 711
 
+id align-ep-pinned
+epd 1b1k4/8/8/1rPpK3/8/8/8/8 w - d6
+perft 1 5
+perft 2 100
+perft 3 555
+
 id ep-unrelated-check
 epd rnbqk1nr/bb3p1p/1q2r3/2pPp3/3P4/7P/1PP1NpPP/R1BQKBNR w KQkq c6
 perft 1 2

From 736478a1c7cd798cd7a603b92a5ac7dff692349b Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Tue, 2 May 2023 20:58:22 +0200
Subject: [PATCH 066/250] Work around jQuery removed from Sphinx (fixes #1006)

---
 docs/conf.py          | 7 ++++++-
 docs/requirements.txt | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/docs/conf.py b/docs/conf.py
index bde54010b..ede90b63b 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -15,7 +15,12 @@
 }
 
 # Autodoc.
-extensions = ["sphinx.ext.autodoc", "sphinx.ext.viewcode", "sphinx.ext.intersphinx"]
+extensions = [
+    "sphinx.ext.autodoc",
+    "sphinx.ext.viewcode",
+    "sphinx.ext.intersphinx",
+    "sphinxcontrib.jquery"
+]
 autodoc_member_order = "bysource"
 intersphinx_mapping = {
     "python": ("https://docs.python.org/3", None),
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 8f65fe1fd..d99b8c473 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1,2 @@
 Sphinx==6.1.2
+sphinxcontrib-jquery==4.1

From 40e633bab5145945536c45fd178e8dd9a265ae1f Mon Sep 17 00:00:00 2001
From: Mark Harrison <MarkZH@users.noreply.github.com>
Date: Wed, 3 May 2023 03:04:37 -0700
Subject: [PATCH 067/250] Correct grammar

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 722d2be36..5b921de70 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -336,7 +336,7 @@ class Limit:
     """
     An identifier to use with XBoard engines to signal that the time
     control has changed. When this field changes, Xboard engines are
-    send level or st commands as appropriate. Otherwise, only time
+    sent level or st commands as appropriate. Otherwise, only time
     and otim commands are sent to update the engine's clock.
     """
 

From c3bc113bcc765dd51f998dc2be83b32c1345091f Mon Sep 17 00:00:00 2001
From: johndoknjas <jdoknjas@sfu.ca>
Date: Sun, 4 Jun 2023 18:39:59 -0700
Subject: [PATCH 068/250] Small cleanups.

---
 chess/engine.py   | 8 ++++----
 chess/pgn.py      | 5 +----
 chess/polyglot.py | 5 +----
 3 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index c3b863032..65fc8f6c2 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1532,7 +1532,7 @@ def start(self, engine: UciProtocol) -> None:
 
         return await self.communicate(UciConfigureCommand)
 
-    def _opponent_configuration(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> ConfigMapping:
+    def _opponent_configuration(self, *, opponent: Optional[Opponent] = None) -> ConfigMapping:
         if opponent and opponent.name and "UCI_Opponent" in self.options:
             rating = opponent.rating or "none"
             title = opponent.title or "none"
@@ -1542,7 +1542,7 @@ def _opponent_configuration(self, *, opponent: Optional[Opponent] = None, engine
             return {}
 
     async def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engine_rating: Optional[int] = None) -> None:
-        return await self.configure(self._opponent_configuration(opponent=opponent, engine_rating=engine_rating))
+        return await self.configure(self._opponent_configuration(opponent=opponent))
 
     def _position(self, board: chess.Board) -> None:
         # Select UCI_Variant and UCI_Chess960.
@@ -1932,7 +1932,7 @@ def _chain_config(a: ConfigMapping, b: ConfigMapping) -> Iterator[Tuple[str, Con
 class UciOptionMap(MutableMapping[str, T]):
     """Dictionary with case-insensitive keys."""
 
-    def __init__(self, data: Optional[Union[Iterable[Tuple[str, T]]]] = None, **kwargs: T) -> None:
+    def __init__(self, data: Optional[Iterable[Tuple[str, T]]] = None, **kwargs: T) -> None:
         self._store: Dict[str, Tuple[str, T]] = {}
         if data is None:
             data = {}
@@ -1948,7 +1948,7 @@ def __delitem__(self, key: str) -> None:
         del self._store[key.lower()]
 
     def __iter__(self) -> Iterator[str]:
-        return (casedkey for casedkey, mappedvalue in self._store.values())
+        return (casedkey for casedkey, _ in self._store.values())
 
     def __len__(self) -> int:
         return len(self._store)
diff --git a/chess/pgn.py b/chess/pgn.py
index 553b6ece6..1f99f6506 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -942,10 +942,7 @@ def __setitem__(self, key: str, value: str) -> None:
             self._others[key] = value
 
     def __getitem__(self, key: str) -> str:
-        if key in TAG_ROSTER:
-            return self._tag_roster[key]
-        else:
-            return self._others[key]
+        return self._tag_roster[key] if key in TAG_ROSTER else self._others[key]
 
     def __delitem__(self, key: str) -> None:
         if key in TAG_ROSTER:
diff --git a/chess/polyglot.py b/chess/polyglot.py
index c56c5ecfb..39270c129 100644
--- a/chess/polyglot.py
+++ b/chess/polyglot.py
@@ -391,11 +391,8 @@ def __getitem__(self, index: int) -> Entry:
         return Entry(key, raw_move, weight, learn, move)
 
     def __iter__(self) -> Iterator[Entry]:
-        i = 0
-        size = len(self)
-        while i < size:
+        for i in range(len(self)):
             yield self[i]
-            i += 1
 
     def bisect_key_left(self, key: int) -> int:
         lo = 0

From 67aa18e3bb78d245d6762e514c0037f519c7a30f Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 7 Jul 2023 22:49:38 +0200
Subject: [PATCH 069/250] Fix typo in docs: INFO_BASE -> INFO_BASIC

---
 chess/engine.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index c3b863032..22de2b440 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1155,7 +1155,7 @@ async def play(self, board: chess.Board, limit: Limit, *, game: object = None, i
             Will automatically inform the engine if the object is not equal
             to the previous game (e.g., ``ucinewgame``, ``new``).
         :param info: Selects which additional information to retrieve from the
-            engine. ``INFO_NONE``, ``INFO_BASE`` (basic information that is
+            engine. ``INFO_NONE``, ``INFO_BASIC`` (basic information that is
             trivial to obtain), ``INFO_SCORE``, ``INFO_PV``,
             ``INFO_REFUTATION``, ``INFO_CURRLINE``, ``INFO_ALL`` or any
             bitwise combination. Some overhead is associated with parsing
@@ -1197,7 +1197,7 @@ async def analyse(self, board: chess.Board, limit: Limit, *, multipv: Optional[i
             Will automatically inform the engine if the object is not equal
             to the previous game (e.g., ``ucinewgame``, ``new``).
         :param info: Selects which information to retrieve from the
-            engine. ``INFO_NONE``, ``INFO_BASE`` (basic information that is
+            engine. ``INFO_NONE``, ``INFO_BASIC`` (basic information that is
             trivial to obtain), ``INFO_SCORE``, ``INFO_PV``,
             ``INFO_REFUTATION``, ``INFO_CURRLINE``, ``INFO_ALL`` or any
             bitwise combination. Some overhead is associated with parsing
@@ -1230,7 +1230,7 @@ async def analysis(self, board: chess.Board, limit: Optional[Limit] = None, *, m
             Will automatically inform the engine if the object is not equal
             to the previous game (e.g., ``ucinewgame``, ``new``).
         :param info: Selects which information to retrieve from the
-            engine. ``INFO_NONE``, ``INFO_BASE`` (basic information that is
+            engine. ``INFO_NONE``, ``INFO_BASIC`` (basic information that is
             trivial to obtain), ``INFO_SCORE``, ``INFO_PV``,
             ``INFO_REFUTATION``, ``INFO_CURRLINE``, ``INFO_ALL`` or any
             bitwise combination. Some overhead is associated with parsing

From c4611185b060635bf6b4aef30f7daf75e9737b22 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 8 Jul 2023 17:26:00 +0200
Subject: [PATCH 070/250] Add sf16 WDL model

---
 chess/engine.py | 18 +++++++++++++++---
 test.py         |  1 +
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 22de2b440..55c5bc9b0 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -44,7 +44,7 @@
 
 try:
     from typing import Literal
-    _WdlModel = Literal["sf", "sf15.1", "sf15", "sf14", "sf12", "lichess"]
+    _WdlModel = Literal["sf", "sf16", "sf15.1", "sf15", "sf14", "sf12", "lichess"]
 except ImportError:
     # Before Python 3.8.
     _WdlModel = str  # type: ignore
@@ -637,11 +637,20 @@ def __ge__(self, other: object) -> bool:
         else:
             return NotImplemented
 
+def _sf16_wins(cp: int, *, ply: int) -> int:
+    # https://github.com/official-stockfish/Stockfish/blob/sf_16/src/uci.h#L38
+    NormalizeToPawnValue = 328
+    # https://github.com/official-stockfish/Stockfish/blob/sf_16/src/uci.cpp#L200-L224
+    m = min(240, max(ply, 0)) / 64
+    a = (((0.38036525 * m + -2.82015070) * m + 23.17882135) * m) + 307.36768407
+    b = (((-2.29434733 * m + 13.27689788) * m + -14.26828904) * m) + 63.45318330
+    x = min(4000, max(cp * NormalizeToPawnValue / 100, -4000))
+    return int(0.5 + 1000 / (1 + math.exp((a - x) / b)))
 
 def _sf15_1_wins(cp: int, *, ply: int) -> int:
-    # https://github.com/official-stockfish/Stockfish/blob/sf_15.1/src/uci.cpp#L200-L224
     # https://github.com/official-stockfish/Stockfish/blob/sf_15.1/src/uci.h#L38
     NormalizeToPawnValue = 361
+    # https://github.com/official-stockfish/Stockfish/blob/sf_15.1/src/uci.cpp#L200-L224
     m = min(240, max(ply, 0)) / 64
     a = (((-0.58270499 * m + 2.68512549) * m + 15.24638015) * m) + 344.49745382
     b = (((-2.65734562 * m + 15.96509799) * m + -20.69040836) * m) + 73.61029937
@@ -703,9 +712,12 @@ def wdl(self, *, model: _WdlModel = "sf", ply: int = 30) -> Wdl:
         elif model == "sf15":
             wins = _sf15_wins(self.cp, ply=ply)
             losses = _sf15_wins(-self.cp, ply=ply)
-        else:
+        elif model == "sf15.1":
             wins = _sf15_1_wins(self.cp, ply=ply)
             losses = _sf15_1_wins(-self.cp, ply=ply)
+        else:
+            wins = _sf16_wins(self.cp, ply=ply)
+            losses = _sf16_wins(-self.cp, ply=ply)
         draws = 1000 - wins - losses
         return Wdl(wins, draws, losses)
 
diff --git a/test.py b/test.py
index 17dec2916..50b45cf5c 100755
--- a/test.py
+++ b/test.py
@@ -3002,6 +3002,7 @@ def test_wdl_model(self):
         self.assertEqual(chess.engine.Cp(146).wdl(model="sf14", ply=25), chess.engine.Wdl(601, 398, 1))
         self.assertEqual(chess.engine.Cp(40).wdl(model="sf15", ply=25), chess.engine.Wdl(58, 937, 5))
         self.assertEqual(chess.engine.Cp(100).wdl(model="sf15.1", ply=64), chess.engine.Wdl(497, 503, 0))
+        self.assertEqual(chess.engine.Cp(-52).wdl(model="sf16", ply=63), chess.engine.Wdl(0, 932, 68))
 
     @catchAndSkip(FileNotFoundError, "need stockfish")
     def test_sf_forced_mates(self):

From a1f16f828c9d101abb8c7789ee418b06c74d919f Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sat, 8 Jul 2023 17:03:38 -0700
Subject: [PATCH 071/250] Correct documentation of send_game_result method

---
 chess/engine.py | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index ae33db688..2b0285aca 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1251,10 +1251,15 @@ async def send_game_result(self, board: chess.Board, winner: Optional[Color] = N
         """
         Sends the engine the result of the game.
 
-        UCI engines only recieve the final position of the board. XBoard engines
-        receive the final moves and a line of the form "result <winner> {<ending>}",
-        where <winner> is one of "1-0", "0-1", "1/2-1/2", or "*" to indicate white
-        won, black won, draw, or adjournment, respectively.
+        XBoard engines receive the final moves and a line of the form
+        "result <winner> {<ending>}". The <winner> field is one of "1-0",
+        "0-1", "1/2-1/2", or "*" to indicate white won, black won, draw,
+        or adjournment, respectively. The <ending> field is a description
+        of the specific reason for the end of the game: "White mates",
+        "Time forfeiture", "Stalemate", etc.
+
+        UCI engines do not expect end-of-game information and so are not
+        sent anything.
 
         :param board: The final state of the board.
         :param winner: Optional. Specify the winner of the game. This is useful

From 65bf3d09bd0707ac257305f4151eace2cf8db8f0 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sat, 8 Jul 2023 18:44:33 -0700
Subject: [PATCH 072/250] Error on dubious characters in ending messages

Curly braces and newlines can allow arbitrary messages to be sent
to an engine. Do not allow these characters to be sent in
end-of-game messages.

Add tests to make sure an exception is raised for invalid characters.
---
 chess/engine.py |  3 +++
 test.py         | 16 ++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/chess/engine.py b/chess/engine.py
index 2b0285aca..41b12033e 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2508,6 +2508,9 @@ async def send_opponent_information(self, *, opponent: Optional[Opponent] = None
     async def send_game_result(self, board: chess.Board, winner: Optional[Color] = None, game_ending: Optional[str] = None, game_complete: bool = True) -> None:
         class XBoardGameResultCommand(BaseCommand[XBoardProtocol, None]):
             def start(self, engine: XBoardProtocol) -> None:
+                if game_ending and any(c in game_ending for c in "{}\n\r"):
+                    raise EngineError(f"invalid line break or curly braces in game ending message: {game_ending!r}")
+
                 engine._new(board, engine.game, {})  # Send final moves to engine.
                 
                 outcome = board.outcome(claim_draw=True)
diff --git a/test.py b/test.py
index fd3b93ed8..4c1bd15c9 100755
--- a/test.py
+++ b/test.py
@@ -3752,6 +3752,22 @@ async def main():
             await protocol.send_game_result(timeout_board, chess.BLACK, "Time forfeiture")
             mock.assert_done()
 
+            error_board = chess.Board()
+            mock.expect("new")
+            mock.expect("force")
+            mock.expect("st 5")
+            mock.expect("nopost")
+            mock.expect("easy")
+            mock.expect("go", ["move e2e4"])
+            mock.expect_ping()
+            result = await protocol.play(error_board, limit, game="error")
+            self.assertEqual(result.move, error_board.parse_uci("e2e4"))
+            error_board.push(result.move)
+            for c in "\n\r{}":
+                with self.assertRaises(chess.engine.EngineError):
+                    await protocol.send_game_result(error_board, chess.BLACK, f"Time{c}forfeiture")
+            mock.assert_done()
+
             material_board = chess.Board("k7/8/8/8/8/8/8/K7 b - - 0 1")
             self.assertTrue(material_board.is_insufficient_material())
             mock.expect("new")

From ee11a56c96c2105a50111eef9a8a7eb1e5e5e29a Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 13 Jul 2023 01:25:12 -0700
Subject: [PATCH 073/250] Error when XBoard opponent has newline in name

Use the configuration machinery to send the opponent's information
to the engine instead of using the Opponent class directly. This will
make sure that an exception is raised if the opponent's name has
newlines in it before send_line() is called. This prevents opponents
from injecting commands into the engine. For example, if an
opponent sets their name as "Cheat\neasy", then the following
commands will be sent to the local engine

name Cheat
easy

which would cause the engine to turn off pondering.

Also, add tests to show the change works as expected.
---
 chess/engine.py | 14 ++++++++------
 test.py         |  9 +++++++++
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 4c24681ee..efcc0f134 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2152,6 +2152,7 @@ def _variant(self, variant: Optional[str]) -> None:
 
     def _new(self, board: chess.Board, game: object, options: ConfigMapping, opponent: Optional[Opponent] = None) -> None:
         self._configure(options)
+        self._configure(self._opponent_configuration(opponent=opponent))
 
         # Set up starting position.
         root = board.root()
@@ -2172,15 +2173,16 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping, opponen
             if self.config.get("random"):
                 self.send_line("random")
             
-            opponent_name = (opponent.name if opponent else None) or self.target_config.get("name")
+            opponent_name = self.config.get("name")
             if opponent_name and self.features.get("name", True):
                 self.send_line(f"name {opponent_name}")
 
-            opponent_rating = (opponent.rating if opponent else None) or self.target_config.get("opponent_rating") or 0
-            if self.target_config.get("engine_rating") or opponent_rating:
-                self.send_line(f"rating {self.target_config.get('engine_rating') or 0} {opponent_rating}")
+            opponent_rating = self.config.get("opponent_rating")
+            engine_rating = self.config.get("engine_rating")
+            if engine_rating or opponent_rating:
+                self.send_line(f"rating {engine_rating or 0} {opponent_rating or 0}")
 
-            if (opponent and opponent.is_engine) or (self.target_config.get("computer") if self.config.get("computer") is None else self.config.get("computer")):
+            if self.config.get("computer"):
                 self.send_line("computer")
 
         self.send_line("force")
@@ -2518,7 +2520,7 @@ def _opponent_configuration(self, *, opponent: Optional[Opponent] = None, engine
         if opponent is None:
             return {}
 
-        opponent_info: Dict[str, Union[int, bool, str]] = {"engine_rating": engine_rating or 0,
+        opponent_info: Dict[str, Union[int, bool, str]] = {"engine_rating": engine_rating or self.target_config.get("engine_rating") or 0,
                                                            "opponent_rating": opponent.rating or 0,
                                                            "computer": opponent.is_engine or False}
         
diff --git a/test.py b/test.py
index 8cd599474..b109fabf8 100755
--- a/test.py
+++ b/test.py
@@ -3688,6 +3688,15 @@ async def main():
             self.assertEqual(result.move, board.parse_san("e5"))
             mock.assert_done()
 
+            bad_opponent = chess.engine.Opponent("New\nLine", "GM", 1, False)
+            with self.assertRaises(chess.engine.EngineError):
+                await protocol.send_opponent_information(opponent=bad_opponent)
+            mock.assert_done()
+
+            with self.assertRaises(chess.engine.EngineError):
+                result = await protocol.play(board, limit, game="bad game", opponent=bad_opponent)
+            mock.assert_done()
+
         asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 

From 0dae9d773f18ab10086896969c5842c7caa78f9c Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sat, 15 Jul 2023 05:56:56 -0700
Subject: [PATCH 074/250] Add send_opponent_information() documentation

---
 chess/engine.py | 10 +++++++++-
 docs/engine.rst |  6 ++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index efcc0f134..d60179635 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -449,10 +449,18 @@ class Info(enum.IntFlag):
 @dataclasses.dataclass
 class Opponent:
     """Used to store information about an engine's opponent."""
+
     name: Optional[str]
+    """The name of the opponent."""
+
     title: Optional[str]
+    """The opponent's title--for example, GM, IM, or BOT."""
+
     rating: Optional[int]
+    """The opponent's ELO rating."""
+
     is_engine: Optional[bool]
+    """Whether the opponent is a chess engine/computer program."""
 
 
 class PovScore:
@@ -1158,7 +1166,7 @@ async def send_opponent_information(self, *, opponent: Optional[Opponent] = None
         method should be called before the first move of a game--i.e., the
         first call to :func:`chess.engine.Protocol.play()`.
 
-        :param opponent: Optional. The opponent's information.
+        :param opponent: Optional. An instance of :class:`chess.engine.Opponent` that has the opponent's information.
         :param engine_rating: Optional. This engine's own rating. Only used by XBoard engines.
         """
 
diff --git a/docs/engine.rst b/docs/engine.rst
index 08f8f8f5e..556d64793 100644
--- a/docs/engine.rst
+++ b/docs/engine.rst
@@ -70,6 +70,12 @@ Example: Let Stockfish play against itself, 100 milliseconds per move.
 .. autoclass:: chess.engine.PlayResult
     :members:
 
+.. autoclass:: chess.engine.Protocol
+    :members: send_opponent_information
+
+.. autoclass:: chess.engine.Opponent
+    :members:
+
 Analysing and evaluating a position
 -----------------------------------
 

From 0fcee3568956feaba9f96cb1a906b4a68c83c9ab Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sat, 15 Jul 2023 05:58:49 -0700
Subject: [PATCH 075/250] Add send_game_result() documentation

Also, correct formatting and spelling.
---
 chess/engine.py | 11 ++++++-----
 docs/engine.rst |  3 +++
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index d60179635..30618d829 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1280,9 +1280,9 @@ async def send_game_result(self, board: chess.Board, winner: Optional[Color] = N
         Sends the engine the result of the game.
 
         XBoard engines receive the final moves and a line of the form
-        "result <winner> {<ending>}". The <winner> field is one of "1-0",
-        "0-1", "1/2-1/2", or "*" to indicate white won, black won, draw,
-        or adjournment, respectively. The <ending> field is a description
+        ``result <winner> {<ending>}``. The ``<winner>`` field is one of ``1-0``,
+        ``0-1``, ``1/2-1/2``, or ``*`` to indicate white won, black won, draw,
+        or adjournment, respectively. The ``<ending>`` field is a description
         of the specific reason for the end of the game: "White mates",
         "Time forfeiture", "Stalemate", etc.
 
@@ -1292,9 +1292,10 @@ async def send_game_result(self, board: chess.Board, winner: Optional[Color] = N
         :param board: The final state of the board.
         :param winner: Optional. Specify the winner of the game. This is useful
             if the result of the game is not evident from the board--e.g., time
-            forfeiture or draw by agreement.
+            forfeiture or draw by agreement. If not ``None``, this parameter
+            overrides any winner derivable from the board.
         :param game_ending: Optional. Text describing the reason for the game
-            ending. Similarly to the winner paramter, this overrides any game
+            ending. Similarly to the winner parameter, this overrides any game
             result derivable from the board.
         :param game_complete: Optional. Whether the game reached completion.
         """
diff --git a/docs/engine.rst b/docs/engine.rst
index 556d64793..02dd4548f 100644
--- a/docs/engine.rst
+++ b/docs/engine.rst
@@ -76,6 +76,9 @@ Example: Let Stockfish play against itself, 100 milliseconds per move.
 .. autoclass:: chess.engine.Opponent
     :members:
 
+.. autoclass:: chess.engine.Protocol
+    :members: send_game_result
+
 Analysing and evaluating a position
 -----------------------------------
 

From 53e92b445b9340368b1791843e24a8975fb602d5 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Tue, 25 Jul 2023 21:16:14 +0200
Subject: [PATCH 076/250] Document potentially surprising time complexities
 (closes #1000)

---
 chess/pgn.py | 50 +++++++++++++++++++++++++++++++++++++++++++++-----
 docs/pgn.rst |  4 ++++
 2 files changed, 49 insertions(+), 5 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 1f99f6506..f6783585c 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -215,6 +215,8 @@ def board(self) -> chess.Board:
         ``Variant``) unless the ``FEN`` header tag is set.
 
         It's a copy, so modifying the board will not alter the game.
+
+        Complexity is `O(n)`.
         """
 
     @abc.abstractmethod
@@ -226,11 +228,15 @@ def ply(self) -> int:
 
         Usually this is equal to the number of parent nodes, but it may be
         more if the game was started from a custom position.
+
+        Complexity is `O(n)`.
         """
 
     def turn(self) -> Color:
         """
         Gets the color to move at this node. See :data:`chess.Board.turn`.
+
+        Complexity is `O(n)`.
         """
         return self.ply() % 2 == 0
 
@@ -241,13 +247,21 @@ def root(self) -> GameNode:
         return node
 
     def game(self) -> Game:
-        """Gets the root node, i.e., the game."""
+        """
+        Gets the root node, i.e., the game.
+
+        Complexity is `O(n)`.
+        """
         root = self.root()
         assert isinstance(root, Game), "GameNode not rooted in Game"
         return root
 
     def end(self) -> GameNode:
-        """Follows the main variation to the end and returns the last node."""
+        """
+        Follows the main variation to the end and returns the last node.
+
+        Complexity is `O(n)`.
+        """
         node = self
 
         while node.variations:
@@ -256,7 +270,11 @@ def end(self) -> GameNode:
         return node
 
     def is_end(self) -> bool:
-        """Checks if this node is the last node in the current variation."""
+        """
+        Checks if this node is the last node in the current variation.
+
+        Complexity is `O(1)`.
+        """
         return not self.variations
 
     def starts_variation(self) -> bool:
@@ -267,6 +285,8 @@ def starts_variation(self) -> bool:
 
         For example, in ``1. e4 e5 (1... c5 2. Nf3) 2. Nf3``, the node holding
         1... c5 starts a variation.
+
+        Complexity is `O(1)`.
         """
         if not self.parent or not self.parent.variations:
             return False
@@ -274,7 +294,11 @@ def starts_variation(self) -> bool:
         return self.parent.variations[0] != self
 
     def is_mainline(self) -> bool:
-        """Checks if the node is in the mainline of the game."""
+        """
+        Checks if the node is in the mainline of the game.
+
+        Complexity is `O(n)`.
+        """
         node = self
 
         while node.parent:
@@ -291,6 +315,8 @@ def is_main_variation(self) -> bool:
         """
         Checks if this node is the first variation from the point of view of its
         parent. The root node is also in the main variation.
+
+        Complexity is `O(1)`.
         """
         if not self.parent:
             return True
@@ -367,6 +393,8 @@ def next(self) -> Optional[ChildNode]:
         """
         Returns the first node of the mainline after this node, or ``None`` if
         this node does not have any children.
+
+        Complexity is `O(1)`.
         """
         return self.variations[0] if self.variations else None
 
@@ -404,6 +432,8 @@ def eval(self) -> Optional[chess.engine.PovScore]:
         """
         Parses the first valid ``[%eval ...]`` annotation in the comment of
         this node, if any.
+
+        Complexity is `O(n)`.
         """
         match = EVAL_REGEX.search(self.comment)
         if not match:
@@ -428,6 +458,8 @@ def eval_depth(self) -> Optional[int]:
         """
         Parses the first valid ``[%eval ...]`` annotation in the comment of
         this node and returns the corresponding depth, if any.
+
+        Complexity is `O(1)`.
         """
         match = EVAL_REGEX.search(self.comment)
         return int(match.group("depth")) if match and match.group("depth") else None
@@ -670,6 +702,8 @@ def san(self) -> str:
         See :func:`chess.Board.san()`.
 
         Do not call this on the root node.
+
+        Complexity is `O(n)`.
         """
         return self.parent.board().san(self.move)
 
@@ -679,11 +713,17 @@ def uci(self, *, chess960: Optional[bool] = None) -> str:
         See :func:`chess.Board.uci()`.
 
         Do not call this on the root node.
+
+        Complexity is `O(n)`.
         """
         return self.parent.board().uci(self.move, chess960=chess960)
 
     def end(self) -> ChildNode:
-        """Follows the main variation to the end and returns the last node."""
+        """
+        Follows the main variation to the end and returns the last node.
+
+        Complexity is `O(n)`.
+        """
         return typing.cast(ChildNode, super().end())
 
     def _accept_node(self, parent_board: chess.Board, visitor: BaseVisitor[ResultT]) -> None:
diff --git a/docs/pgn.rst b/docs/pgn.rst
index 9ebe96594..dd5a6fa47 100644
--- a/docs/pgn.rst
+++ b/docs/pgn.rst
@@ -48,6 +48,10 @@ position of the game. The tree consists of one root node
 nodes (:class:`~chess.pgn.ChildNode`).
 Both extend :class:`~chess.pgn.GameNode`.
 
+.. note:: Some basic methods have complexity `O(n)` for a game with n moves.
+  When following a variation, it is often more efficient to use visitors
+  or incrementally update state (like board, ply counter, or turn).
+
 .. autoclass:: chess.pgn.GameNode
     :members:
 

From 59a5233da0f601e18df04a3b4532d54fd252e8e9 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Tue, 25 Jul 2023 21:22:54 +0200
Subject: [PATCH 077/250] Update Stockfish 11 download URLs (fixes #1019)

---
 .github/workflows/setup-ubuntu-latest.sh  | 2 +-
 .github/workflows/setup-windows-latest.sh | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/setup-ubuntu-latest.sh b/.github/workflows/setup-ubuntu-latest.sh
index de1d567fd..8954c8f0c 100755
--- a/.github/workflows/setup-ubuntu-latest.sh
+++ b/.github/workflows/setup-ubuntu-latest.sh
@@ -1,7 +1,7 @@
 #!/bin/sh -e
 
 # Stockfish
-wget https://stockfish.s3.amazonaws.com/stockfish-11-linux.zip
+wget https://files.stockfishchess.org/archive/Stockfish%2011/stockfish-11-linux.zip
 unzip stockfish-11-linux.zip
 mkdir -p bin
 cp stockfish-11-linux/Linux/stockfish_20011801_x64_bmi2 bin/stockfish
diff --git a/.github/workflows/setup-windows-latest.sh b/.github/workflows/setup-windows-latest.sh
index 3ae917a5c..685ead65a 100755
--- a/.github/workflows/setup-windows-latest.sh
+++ b/.github/workflows/setup-windows-latest.sh
@@ -2,7 +2,7 @@
 
 echo Download ...
 choco install wget
-wget https://stockfishchess.org/files/stockfish-11-win.zip
+wget https://files.stockfishchess.org/archive/Stockfish%2011/stockfish-11-win.zip
 
 echo Unzip ..
 7z e stockfish-11-win.zip stockfish-11-win/Windows/*.exe

From 34de67dfd285e36f152a6e4eca0ce9f32ab82328 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Tue, 25 Jul 2023 22:29:10 +0200
Subject: [PATCH 078/250] Prepare changelog for next release

---
 CHANGELOG.rst | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 2580c841c..0e5872ed4 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,38 @@
 Changelog for python-chess
 ==========================
 
+Upcoming in the next release
+----------------------------
+
+New features:
+
+* Use ``chess.engine.Opponent`` to send opponent information to engines.
+* Inform engines about the game result using
+  ``chess.engine.Protocol.send_game_result()``.
+* Add ``chess.engine.Limit.clock_id``.
+* Add ``chess.svg.board(..., borders=True)``.
+* Avoid rendering background behind SVG boards to better support transparency.
+* Add ``chess.pgn.BaseVisitor.begin_parse_san()``.
+* Introduce new distance metrics ``chess.square_manhattan_distance()`` and
+  ``chess.square_knight_distance()``.
+
+Bugfixes:
+
+* Fix ``chess.pgn.GameNode.eval()`` sometimes off by one centipawn.
+* Fix handling of additional spaces between UCI option tokens.
+* Handle implicit XBoard engine resignation via output like
+  ``0-1 {White resigns}``.
+
+Changes:
+
+* Add model ``sf16`` for ``chess.engine.Score.wdl()``, the new default.
+* Update ``lichess`` WDL model.
+* Keep PGN headers that do not belong to the Seven Tag Roster in insertion
+  order.
+* Halve the number of open file descriptors maintained by tablebases
+  and opening books.
+* Reduce verbosity of logged ``chess.pgn`` errors.
+
 New in v1.9.4 (22nd Dec 2022)
 -----------------------------
 

From 41b27bb099169c6b36590e1bc9b690a2de8f9a2a Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 18:30:59 +0200
Subject: [PATCH 079/250] Bump 1.10.0

---
 CHANGELOG.rst     | 4 ++--
 chess/__init__.py | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 0e5872ed4..a44b2b070 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,8 +1,8 @@
 Changelog for python-chess
 ==========================
 
-Upcoming in the next release
-----------------------------
+New in v1.10.0 (27th Jul 2023)
+------------------------------
 
 New features:
 
diff --git a/chess/__init__.py b/chess/__init__.py
index 980dc34b4..6c0cf9c94 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -27,7 +27,7 @@
 
 __email__ = "niklas.fiekas@backscattering.de"
 
-__version__ = "1.9.4"
+__version__ = "1.10.0"
 
 import collections
 import copy

From cfda9c0f70697e6c17f71ffa1d1381c5067dae62 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 18:32:48 +0200
Subject: [PATCH 080/250] Test Python 3.11 using tox

---
 tox.ini | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tox.ini b/tox.ini
index 3eeb764ba..1b103fd6c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py37,py38,py39,py310
+envlist = py37,py38,py39,py310,py311
 
 [testenv]
 passenv = LD_LIBRARY_PATH

From 23e43177cc979660907814540e210ce0ea45c43b Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 19:29:50 +0200
Subject: [PATCH 081/250] Make flake8 happy

---
 chess/__init__.py | 2 +-
 chess/engine.py   | 8 ++++----
 chess/variant.py  | 1 -
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 6c0cf9c94..b87e3cbec 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -240,7 +240,7 @@ def square_knight_distance(a: Square, b: Square) -> int:
     elif dx == dy == 2:
         return 4
     elif dx == dy == 1:
-        if BB_SQUARES[a] & BB_CORNERS or BB_SQUARES[b] & BB_CORNERS: # Special case only for corner squares
+        if BB_SQUARES[a] & BB_CORNERS or BB_SQUARES[b] & BB_CORNERS:  # Special case only for corner squares
             return 4
 
     m = math.ceil(max(dx / 2, dy / 2, (dx + dy) / 3))
diff --git a/chess/engine.py b/chess/engine.py
index 30618d829..cab9d5d2c 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2181,7 +2181,7 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping, opponen
 
             if self.config.get("random"):
                 self.send_line("random")
-            
+
             opponent_name = self.config.get("name")
             if opponent_name and self.features.get("name", True):
                 self.send_line(f"name {opponent_name}")
@@ -2532,7 +2532,7 @@ def _opponent_configuration(self, *, opponent: Optional[Opponent] = None, engine
         opponent_info: Dict[str, Union[int, bool, str]] = {"engine_rating": engine_rating or self.target_config.get("engine_rating") or 0,
                                                            "opponent_rating": opponent.rating or 0,
                                                            "computer": opponent.is_engine or False}
-        
+
         if opponent.name and self.features.get("name", True):
             opponent_info["name"] = f"{opponent.title or ''} {opponent.name}".strip()
 
@@ -2548,7 +2548,7 @@ def start(self, engine: XBoardProtocol) -> None:
                     raise EngineError(f"invalid line break or curly braces in game ending message: {game_ending!r}")
 
                 engine._new(board, engine.game, {})  # Send final moves to engine.
-                
+
                 outcome = board.outcome(claim_draw=True)
 
                 if not game_complete:
@@ -2966,7 +2966,7 @@ def send_opponent_information(self, *, opponent: Optional[Opponent] = None, engi
                 self.timeout)
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
         return future.result()
-        
+
     def ping(self) -> None:
         with self._not_shut_down():
             coro = asyncio.wait_for(self.protocol.ping(), self.timeout)
diff --git a/chess/variant.py b/chess/variant.py
index cd1670480..31cdea287 100644
--- a/chess/variant.py
+++ b/chess/variant.py
@@ -17,7 +17,6 @@
 from __future__ import annotations
 
 import chess
-import copy
 import itertools
 
 from typing import Dict, Generic, Hashable, Iterable, Iterator, List, Optional, Type, TypeVar, Union

From 8ede90039228a78e0d74c3b07fb3cbaacea752f6 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 19:34:26 +0200
Subject: [PATCH 082/250] PyPI has removed GPG signatures

---
 release.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/release.py b/release.py
index 099dd4a98..d27ddf04e 100755
--- a/release.py
+++ b/release.py
@@ -99,7 +99,7 @@ def pypi():
     system("rm -rf build")
     system("python3 setup.py sdist bdist_wheel")
     system("twine check dist/*")
-    system("twine upload --skip-existing --sign dist/*")
+    system("twine upload --skip-existing")
 
 
 def github_release(tagname):

From 1cca86ff8fcf6ee587d9a138fd774d1b762ed0e6 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 19:39:46 +0200
Subject: [PATCH 083/250] Remove redundant license headers

---
 chess/__init__.py | 16 ----------------
 chess/engine.py   | 16 ----------------
 chess/gaviota.py  | 17 -----------------
 chess/pgn.py      | 16 ----------------
 chess/polyglot.py | 16 ----------------
 chess/svg.py      | 20 --------------------
 chess/syzygy.py   | 16 ----------------
 chess/variant.py  | 16 ----------------
 setup.py          | 16 ----------------
 test.py           | 16 ----------------
 10 files changed, 165 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index b87e3cbec..a41f38501 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -1,19 +1,3 @@
-# This file is part of the python-chess library.
-# Copyright (C) 2012-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
 """
 A chess library with move generation and validation,
 Polyglot opening book probing, PGN reading and writing,
diff --git a/chess/engine.py b/chess/engine.py
index cab9d5d2c..37b7715fd 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1,19 +1,3 @@
-# This file is part of the python-chess library.
-# Copyright (C) 2012-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
 from __future__ import annotations
 
 import abc
diff --git a/chess/gaviota.py b/chess/gaviota.py
index 454949795..c2439728f 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -1,20 +1,3 @@
-# This file is part of the python-chess library.
-# Copyright (C) 2015 Jean-Noël Avila <jn.avila@free.fr>
-# Copyright (C) 2015-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
 from __future__ import annotations
 
 import ctypes
diff --git a/chess/pgn.py b/chess/pgn.py
index f6783585c..edeab84a3 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -1,19 +1,3 @@
-# This file is part of the python-chess library.
-# Copyright (C) 2012-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
 from __future__ import annotations
 
 import abc
diff --git a/chess/polyglot.py b/chess/polyglot.py
index 39270c129..7d9e425ea 100644
--- a/chess/polyglot.py
+++ b/chess/polyglot.py
@@ -1,19 +1,3 @@
-# This file is part of the python-chess library.
-# Copyright (C) 2012-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
 from __future__ import annotations
 
 import chess
diff --git a/chess/svg.py b/chess/svg.py
index 94ae21569..3e034ce30 100644
--- a/chess/svg.py
+++ b/chess/svg.py
@@ -1,23 +1,3 @@
-# This file is part of the python-chess library.
-# Copyright (C) 2016-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-# Piece vector graphics are copyright (C) Colin M.L. Burnett
-# <https://en.wikipedia.org/wiki/User:Cburnett> and also licensed under the
-# GNU General Public License.
-
 from __future__ import annotations
 
 import math
diff --git a/chess/syzygy.py b/chess/syzygy.py
index 2d835b200..fd9d80890 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -1,19 +1,3 @@
-# This file is part of the python-chess library.
-# Copyright (C) 2012-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
 from __future__ import annotations
 
 import collections
diff --git a/chess/variant.py b/chess/variant.py
index 31cdea287..e81d0aa72 100644
--- a/chess/variant.py
+++ b/chess/variant.py
@@ -1,19 +1,3 @@
-# This file is part of the python-chess library.
-# Copyright (C) 2016-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
 from __future__ import annotations
 
 import chess
diff --git a/setup.py b/setup.py
index bc6a8af51..09675868e 100755
--- a/setup.py
+++ b/setup.py
@@ -1,21 +1,5 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
-#
-# This file is part of the python-chess library.
-# Copyright (C) 2012-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 import os
 import platform
diff --git a/test.py b/test.py
index b109fabf8..d25dd75ad 100755
--- a/test.py
+++ b/test.py
@@ -1,20 +1,4 @@
 #!/usr/bin/env python3
-#
-# This file is part of the python-chess library.
-# Copyright (C) 2012-2021 Niklas Fiekas <niklas.fiekas@backscattering.de>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 import asyncio
 import copy

From ff1a974408abf6da882b633a19e9a340fd21b3e2 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 19:42:27 +0200
Subject: [PATCH 084/250] Test WDL consistency under all models

---
 test.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/test.py b/test.py
index d25dd75ad..6419eb89f 100755
--- a/test.py
+++ b/test.py
@@ -2948,9 +2948,10 @@ def test_score_ordering(self):
                 self.assertEqual(i >= j, a >= b)
                 self.assertEqual(i < j, a.score(mate_score=100000) < b.score(mate_score=100000))
 
-                self.assertTrue(not (i < j) or a.wdl().expectation() <= b.wdl().expectation())
-                self.assertTrue(not (i < j) or a.wdl().winning_chance() <= b.wdl().winning_chance())
-                self.assertTrue(not (i < j) or a.wdl().losing_chance() >= b.wdl().losing_chance())
+                for model in ["sf12", "sf14", "sf15", "sf15.1", "sf16"]:
+                    self.assertTrue(not (i < j) or a.wdl(model=model).expectation() <= b.wdl(model=model).expectation())
+                    self.assertTrue(not (i < j) or a.wdl(model=model).winning_chance() <= b.wdl(model=model).winning_chance())
+                    self.assertTrue(not (i < j) or a.wdl(model=model).losing_chance() >= b.wdl(model=model).losing_chance())
 
     def test_score(self):
         # Negation.

From 9ba8b68d789a6fb7f96c3640cbc7c1c3667cb119 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 19:51:35 +0200
Subject: [PATCH 085/250] Drop support for Python 3.7 (#463)

---
 .github/workflows/test.yml | 2 +-
 chess/polyglot.py          | 4 ++--
 chess/syzygy.py            | 2 +-
 setup.py                   | 3 +--
 tox.ini                    | 4 ++--
 5 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 95e9a3728..e06db4221 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
diff --git a/chess/polyglot.py b/chess/polyglot.py
index 7d9e425ea..92704e6a4 100644
--- a/chess/polyglot.py
+++ b/chess/polyglot.py
@@ -333,8 +333,8 @@ def __init__(self, filename: PathLike) -> None:
             raise IOError(f"invalid file size: ensure {filename!r} is a valid polyglot opening book")
 
         try:
-            # Python 3.8
-            self.mmap.madvise(mmap.MADV_RANDOM)  # type: ignore
+            # Linux
+            self.mmap.madvise(mmap.MADV_RANDOM)
         except AttributeError:
             pass
 
diff --git a/chess/syzygy.py b/chess/syzygy.py
index fd9d80890..af375b5da 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -596,7 +596,7 @@ def init_mmap(self) -> None:
                 raise IOError(f"invalid file size: ensure {self.path!r} is a valid syzygy tablebase file")
 
             try:
-                # Python 3.8
+                # Linux
                 data.madvise(mmap.MADV_RANDOM)
             except AttributeError:
                 pass
diff --git a/setup.py b/setup.py
index 09675868e..ed3d8b0bf 100755
--- a/setup.py
+++ b/setup.py
@@ -65,7 +65,7 @@ def read_description():
     package_data={
         "chess": ["py.typed"],
     },
-    python_requires=">=3.7",
+    python_requires=">=3.8",
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
@@ -73,7 +73,6 @@ def read_description():
         "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
         "Operating System :: OS Independent",
         "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
diff --git a/tox.ini b/tox.ini
index 1b103fd6c..665e9f38b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py37,py38,py39,py310,py311
+envlist = py38,py39,py310,py311
 
 [testenv]
 passenv = LD_LIBRARY_PATH
@@ -10,7 +10,7 @@ commands =
     python test.py --verbose
     python -m doctest README.rst --verbose
 
-[testenv:{py37,py38,py39}]
+[testenv:{py38,py39}]
 passenv = LD_LIBRARY_PATH
 whitelist_externals =
     stockfish

From 85816125b4936ebfd0fd90a2cbddda747c7eeafd Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 19:52:02 +0200
Subject: [PATCH 086/250] Try mypy also under Python 3.10

---
 .github/workflows/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e06db4221..184092752 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -39,7 +39,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.9", "3.11"]
+        python-version: ["3.9", "3.10", "3.11"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

From 8b9e1481568e35802c733140ef2303361976e764 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 20:05:07 +0200
Subject: [PATCH 087/250] fixup! Drop support for Python 3.7 (#463)

---
 chess/polyglot.py | 5 ++++-
 chess/syzygy.py   | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/chess/polyglot.py b/chess/polyglot.py
index 92704e6a4..ac339902c 100644
--- a/chess/polyglot.py
+++ b/chess/polyglot.py
@@ -312,6 +312,9 @@ def size(self) -> int:
     def close(self) -> None:
         pass
 
+    def madvise(self, option: int, start: int = ..., length: int = ...) -> None:
+        pass
+
 
 def _randint(rng: Optional[random.Random], a: int, b: int) -> int:
     return random.randint(a, b) if rng is None else rng.randint(a, b)
@@ -333,7 +336,7 @@ def __init__(self, filename: PathLike) -> None:
             raise IOError(f"invalid file size: ensure {filename!r} is a valid polyglot opening book")
 
         try:
-            # Linux
+            # Unix
             self.mmap.madvise(mmap.MADV_RANDOM)
         except AttributeError:
             pass
diff --git a/chess/syzygy.py b/chess/syzygy.py
index af375b5da..96a17e921 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -596,7 +596,7 @@ def init_mmap(self) -> None:
                 raise IOError(f"invalid file size: ensure {self.path!r} is a valid syzygy tablebase file")
 
             try:
-                # Linux
+                # Unix
                 data.madvise(mmap.MADV_RANDOM)
             except AttributeError:
                 pass

From 6fbb309554e7aaaa450432972a66a1879fcbfe86 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 20:05:31 +0200
Subject: [PATCH 088/250] Unconditionally use typing.Literal

---
 chess/__init__.py | 15 +++++----------
 chess/engine.py   | 19 +++++++------------
 chess/pgn.py      | 13 +++----------
 chess/variant.py  |  4 ++--
 4 files changed, 17 insertions(+), 34 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index a41f38501..0604cec54 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -22,14 +22,9 @@
 import itertools
 import typing
 
-from typing import ClassVar, Callable, Counter, Dict, Generic, Hashable, Iterable, Iterator, List, Mapping, Optional, SupportsInt, Tuple, Type, TypeVar, Union
+from typing import ClassVar, Callable, Counter, Dict, Generic, Hashable, Iterable, Iterator, List, Literal, Mapping, Optional, SupportsInt, Tuple, Type, TypeVar, Union
 
-try:
-    from typing import Literal
-    _EnPassantSpec = Literal["legal", "fen", "xfen"]
-except ImportError:
-    # Before Python 3.8.
-    _EnPassantSpec = str  # type: ignore
+EnPassantSpec = Literal["legal", "fen", "xfen"]
 
 
 Color = bool
@@ -2394,7 +2389,7 @@ def has_legal_en_passant(self) -> bool:
         """Checks if there is a legal en passant capture."""
         return self.ep_square is not None and any(self.generate_legal_ep())
 
-    def fen(self, *, shredder: bool = False, en_passant: _EnPassantSpec = "legal", promoted: Optional[bool] = None) -> str:
+    def fen(self, *, shredder: bool = False, en_passant: EnPassantSpec = "legal", promoted: Optional[bool] = None) -> str:
         """
         Gets a FEN representation of the position.
 
@@ -2426,7 +2421,7 @@ def fen(self, *, shredder: bool = False, en_passant: _EnPassantSpec = "legal", p
             str(self.fullmove_number)
         ])
 
-    def shredder_fen(self, *, en_passant: _EnPassantSpec = "legal", promoted: Optional[bool] = None) -> str:
+    def shredder_fen(self, *, en_passant: EnPassantSpec = "legal", promoted: Optional[bool] = None) -> str:
         return " ".join([
             self.epd(shredder=True, en_passant=en_passant, promoted=promoted),
             str(self.halfmove_clock),
@@ -2662,7 +2657,7 @@ def _epd_operations(self, operations: Mapping[str, Union[None, str, int, float,
 
         return "".join(epd)
 
-    def epd(self, *, shredder: bool = False, en_passant: _EnPassantSpec = "legal", promoted: Optional[bool] = None, **operations: Union[None, str, int, float, Move, Iterable[Move]]) -> str:
+    def epd(self, *, shredder: bool = False, en_passant: EnPassantSpec = "legal", promoted: Optional[bool] = None, **operations: Union[None, str, int, float, Move, Iterable[Move]]) -> str:
         """
         Gets an EPD representation of the current position.
 
diff --git a/chess/engine.py b/chess/engine.py
index 37b7715fd..144fbb649 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -24,14 +24,9 @@
 
 from chess import Color
 from types import TracebackType
-from typing import Any, Callable, Coroutine, Deque, Dict, Generator, Generic, Iterable, Iterator, List, Mapping, MutableMapping, Optional, Tuple, Type, TypeVar, Union
+from typing import Any, Callable, Coroutine, Deque, Dict, Generator, Generic, Iterable, Iterator, List, Literal, Mapping, MutableMapping, Optional, Tuple, Type, TypeVar, Union
 
-try:
-    from typing import Literal
-    _WdlModel = Literal["sf", "sf16", "sf15.1", "sf15", "sf14", "sf12", "lichess"]
-except ImportError:
-    # Before Python 3.8.
-    _WdlModel = str  # type: ignore
+WdlModel = Literal["sf", "sf16", "sf15.1", "sf15", "sf14", "sf12", "lichess"]
 
 
 T = TypeVar("T")
@@ -476,7 +471,7 @@ def is_mate(self) -> bool:
         """Tests if this is a mate score."""
         return self.relative.is_mate()
 
-    def wdl(self, *, model: _WdlModel = "sf", ply: int = 30) -> PovWdl:
+    def wdl(self, *, model: WdlModel = "sf", ply: int = 30) -> PovWdl:
         """See :func:`~chess.engine.Score.wdl()`."""
         return PovWdl(self.relative.wdl(model=model, ply=ply), self.turn)
 
@@ -553,7 +548,7 @@ def is_mate(self) -> bool:
         return self.mate() is not None
 
     @abc.abstractmethod
-    def wdl(self, *, model: _WdlModel = "sf", ply: int = 30) -> Wdl:
+    def wdl(self, *, model: WdlModel = "sf", ply: int = 30) -> Wdl:
         """
         Returns statistics for the expected outcome of this game, based on
         a *model*, given that this score is reached at *ply*.
@@ -699,7 +694,7 @@ def mate(self) -> None:
     def score(self, *, mate_score: Optional[int] = None) -> int:
         return self.cp
 
-    def wdl(self, *, model: _WdlModel = "sf", ply: int = 30) -> Wdl:
+    def wdl(self, *, model: WdlModel = "sf", ply: int = 30) -> Wdl:
         if model == "lichess":
             wins = _lichess_raw_wins(max(-1000, min(self.cp, 1000)))
             losses = 1000 - wins
@@ -758,7 +753,7 @@ def score(self, *, mate_score: Optional[int] = None) -> Optional[int]:
         else:
             return -mate_score - self.moves
 
-    def wdl(self, *, model: _WdlModel = "sf", ply: int = 30) -> Wdl:
+    def wdl(self, *, model: WdlModel = "sf", ply: int = 30) -> Wdl:
         if model == "lichess":
             cp = (21 - min(10, abs(self.moves))) * 100
             wins = _lichess_raw_wins(cp)
@@ -795,7 +790,7 @@ def score(self, *, mate_score: Optional[int] = None) -> Optional[int]: ...
     def score(self, *, mate_score: Optional[int] = None) -> Optional[int]:
         return mate_score
 
-    def wdl(self, *, model: _WdlModel = "sf", ply: int = 30) -> Wdl:
+    def wdl(self, *, model: WdlModel = "sf", ply: int = 30) -> Wdl:
         return Wdl(1000, 0, 0)
 
     def __neg__(self) -> Mate:
diff --git a/chess/pgn.py b/chess/pgn.py
index edeab84a3..ae22afaf6 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -11,16 +11,9 @@
 import chess.engine
 import chess.svg
 
-from typing import Any, Callable, Dict, Generic, Iterable, Iterator, List, Mapping, MutableMapping, Set, TextIO, Tuple, Type, TypeVar, Optional, Union
+from typing import Any, Callable, Dict, Generic, Iterable, Iterator, List, Literal, Mapping, MutableMapping, Set, TextIO, Tuple, Type, TypeVar, Optional, Union
 from chess import Color, Square
 
-try:
-    from typing import Literal
-    _TrueLiteral = Literal[True]
-except ImportError:
-    # Before Python 3.8.
-    _TrueLiteral = bool  # type: ignore
-
 
 LOGGER = logging.getLogger(__name__)
 
@@ -1289,7 +1282,7 @@ def result(self) -> chess.Board:
         return self.board
 
 
-class SkipVisitor(BaseVisitor[_TrueLiteral]):
+class SkipVisitor(BaseVisitor[Literal[True]]):
     """Skips a game."""
 
     def begin_game(self) -> SkipType:
@@ -1301,7 +1294,7 @@ def end_headers(self) -> SkipType:
     def begin_variation(self) -> SkipType:
         return SKIP
 
-    def result(self) -> _TrueLiteral:
+    def result(self) -> Literal[True]:
         return True
 
 
diff --git a/chess/variant.py b/chess/variant.py
index e81d0aa72..6160696a2 100644
--- a/chess/variant.py
+++ b/chess/variant.py
@@ -762,7 +762,7 @@ def set_fen(self, fen: str) -> None:
         self.remaining_checks[chess.WHITE] = wc
         self.remaining_checks[chess.BLACK] = bc
 
-    def epd(self, shredder: bool = False, en_passant: chess._EnPassantSpec = "legal", promoted: Optional[bool] = None, **operations: Union[None, str, int, float, chess.Move, Iterable[chess.Move]]) -> str:
+    def epd(self, shredder: bool = False, en_passant: chess.EnPassantSpec = "legal", promoted: Optional[bool] = None, **operations: Union[None, str, int, float, chess.Move, Iterable[chess.Move]]) -> str:
         epd = [super().epd(shredder=shredder, en_passant=en_passant, promoted=promoted),
                "{:d}+{:d}".format(max(self.remaining_checks[chess.WHITE], 0),
                                   max(self.remaining_checks[chess.BLACK], 0))]
@@ -1019,7 +1019,7 @@ def board_fen(self, promoted: Optional[bool] = None) -> str:
             promoted = True
         return super().board_fen(promoted=promoted)
 
-    def epd(self, shredder: bool = False, en_passant: chess._EnPassantSpec = "legal", promoted: Optional[bool] = None, **operations: Union[None, str, int, float, chess.Move, Iterable[chess.Move]]) -> str:
+    def epd(self, shredder: bool = False, en_passant: chess.EnPassantSpec = "legal", promoted: Optional[bool] = None, **operations: Union[None, str, int, float, chess.Move, Iterable[chess.Move]]) -> str:
         epd = super().epd(shredder=shredder, en_passant=en_passant, promoted=promoted)
         board_part, info_part = epd.split(" ", 1)
         return f"{board_part}[{str(self.pockets[chess.WHITE]).upper()}{self.pockets[chess.BLACK]}] {info_part}"

From 6dcc975d7ca599a8288c1b9435e1a161221aea49 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 20:06:55 +0200
Subject: [PATCH 089/250] Unconditionally use TypedDict

---
 chess/engine.py | 62 +++++++++++++++++++++++--------------------------
 1 file changed, 29 insertions(+), 33 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 144fbb649..75ee9de58 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -328,41 +328,37 @@ def __repr__(self) -> str:
                       if getattr(self, attr) is not None))
 
 
-try:
-    class InfoDict(typing.TypedDict, total=False):
-        """
-        Dictionary of aggregated information sent by the engine.
+class InfoDict(typing.TypedDict, total=False):
+    """
+    Dictionary of aggregated information sent by the engine.
 
-        Commonly used keys are: ``score`` (a :class:`~chess.engine.PovScore`),
-        ``pv`` (a list of :class:`~chess.Move` objects), ``depth``,
-        ``seldepth``, ``time`` (in seconds), ``nodes``, ``nps``, ``multipv``
-        (``1`` for the mainline).
+    Commonly used keys are: ``score`` (a :class:`~chess.engine.PovScore`),
+    ``pv`` (a list of :class:`~chess.Move` objects), ``depth``,
+    ``seldepth``, ``time`` (in seconds), ``nodes``, ``nps``, ``multipv``
+    (``1`` for the mainline).
 
-        Others: ``tbhits``, ``currmove``, ``currmovenumber``, ``hashfull``,
-        ``cpuload``, ``refutation``, ``currline``, ``ebf`` (effective branching factor),
-        ``wdl`` (a :class:`~chess.engine.PovWdl`), and ``string``.
-        """
-        score: PovScore
-        pv: List[chess.Move]
-        depth: int
-        seldepth: int
-        time: float
-        nodes: int
-        nps: int
-        tbhits: int
-        multipv: int
-        currmove: chess.Move
-        currmovenumber: int
-        hashfull: int
-        cpuload: int
-        refutation: Dict[chess.Move, List[chess.Move]]
-        currline: Dict[int, List[chess.Move]]
-        ebf: float
-        wdl: PovWdl
-        string: str
-except AttributeError:
-    # Before Python 3.8.
-    InfoDict = dict  # type: ignore
+    Others: ``tbhits``, ``currmove``, ``currmovenumber``, ``hashfull``,
+    ``cpuload``, ``refutation``, ``currline``, ``ebf`` (effective branching factor),
+    ``wdl`` (a :class:`~chess.engine.PovWdl`), and ``string``.
+    """
+    score: PovScore
+    pv: List[chess.Move]
+    depth: int
+    seldepth: int
+    time: float
+    nodes: int
+    nps: int
+    tbhits: int
+    multipv: int
+    currmove: chess.Move
+    currmovenumber: int
+    hashfull: int
+    cpuload: int
+    refutation: Dict[chess.Move, List[chess.Move]]
+    currline: Dict[int, List[chess.Move]]
+    ebf: float
+    wdl: PovWdl
+    string: str
 
 
 class PlayResult:

From 8214d9757da593c71ad13a1bcb933393125d5937 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 20:23:14 +0200
Subject: [PATCH 090/250] Remove PollingChildWatcher

---
 chess/engine.py | 45 +++++----------------------------------------
 1 file changed, 5 insertions(+), 40 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 75ee9de58..6fac0c602 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -108,46 +108,11 @@ def _init_watcher(self) -> asyncio.AbstractChildWatcher:
             pass
 
         if threading.current_thread() is threading.main_thread():
-            try:
-                watcher = asyncio.ThreadedChildWatcher()
-                LOGGER.debug("Using ThreadedChildWatcher")
-                return watcher
-            except AttributeError:
-                # Before Python 3.8.
-                LOGGER.debug("Using SafeChildWatcher")
-                return asyncio.SafeChildWatcher()
-
-        class PollingChildWatcher(asyncio.SafeChildWatcher):
-            _loop: Optional[asyncio.AbstractEventLoop]
-            _callbacks: Dict[int, Any]
-
-            def __init__(self) -> None:
-                super().__init__()
-                self._poll_handle: Optional[asyncio.Handle] = None
-                self._poll_delay = 0.001
-
-            def attach_loop(self, loop: Optional[asyncio.AbstractEventLoop]) -> None:
-                assert loop is None or isinstance(loop, asyncio.AbstractEventLoop)
-
-                if self._loop is not None and loop is None and self._callbacks:
-                    warnings.warn("A loop is being detached from a child watcher with pending handlers", RuntimeWarning)
-
-                if self._poll_handle is not None:
-                    self._poll_handle.cancel()
-
-                self._loop = loop
-                if self._loop is not None:
-                    self._poll_handle = self._loop.call_soon(self._poll)
-                    self._do_waitpid_all()  # type: ignore
-
-            def _poll(self) -> None:
-                if self._loop:
-                    self._do_waitpid_all()  # type: ignore
-                    self._poll_delay = min(self._poll_delay * 2, 1.0)
-                    self._poll_handle = self._loop.call_later(self._poll_delay, self._poll)
-
-        LOGGER.debug("Using PollingChildWatcher")
-        return PollingChildWatcher()
+            LOGGER.debug("Using SafeChildWatcher")
+            return asyncio.SafeChildWatcher()
+        else:
+            LOGGER.debug("Using ThreadedChildWatcher")
+            return asyncio.ThreadedChildWatcher()
 
 
 def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Coroutine[Any, Any, None]], *, name: Optional[str] = None, debug: bool = False, _policy_lock: threading.Lock = threading.Lock()) -> T:

From 7acc7cf603dee1e129957a68b1584e7cc9a9536a Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 20:33:46 +0200
Subject: [PATCH 091/250] Stop using chess.engine.EventLoopPolicy

---
 chess/engine.py                       | 80 +--------------------------
 docs/engine.rst                       |  6 --
 examples/bratko_kopec/bratko_kopec.py |  1 -
 fuzz/engine.py                        |  1 -
 test.py                               | 17 ------
 5 files changed, 2 insertions(+), 103 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 6fac0c602..6958479f9 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -42,77 +42,8 @@
 MANAGED_OPTIONS = ["uci_chess960", "uci_variant", "multipv", "ponder"]
 
 
-class EventLoopPolicy(asyncio.AbstractEventLoopPolicy):
-    """
-    An event loop policy for thread-local event loops and child watchers.
-    Ensures each event loop is capable of spawning and watching subprocesses,
-    even when not running on the main thread.
-
-    Windows: Uses :class:`~asyncio.ProactorEventLoop`.
-
-    Unix: Uses :class:`~asyncio.SelectorEventLoop`. If available,
-    :class:`~asyncio.PidfdChildWatcher` is used to detect subprocess
-    termination (Python 3.9+ on Linux 5.3+). Otherwise, the default child
-    watcher is used on the main thread and relatively slow eager polling
-    is used on all other threads.
-    """
-    class _Local(threading.local):
-        loop: Optional[asyncio.AbstractEventLoop] = None
-        set_called = False
-        watcher: Optional[asyncio.AbstractChildWatcher] = None
-
-    def __init__(self) -> None:
-        self._local = self._Local()
-
-    def get_event_loop(self) -> asyncio.AbstractEventLoop:
-        if self._local.loop is None and not self._local.set_called and threading.current_thread() is threading.main_thread():
-            self.set_event_loop(self.new_event_loop())
-        if self._local.loop is None:
-            raise RuntimeError(f"no current event loop in thread {threading.current_thread().name!r}")
-        return self._local.loop
-
-    def set_event_loop(self, loop: Optional[asyncio.AbstractEventLoop]) -> None:
-        assert loop is None or isinstance(loop, asyncio.AbstractEventLoop)
-        self._local.set_called = True
-        self._local.loop = loop
-        if self._local.watcher is not None:
-            self._local.watcher.attach_loop(loop)
-
-    def new_event_loop(self) -> asyncio.AbstractEventLoop:
-        return asyncio.ProactorEventLoop() if sys.platform == "win32" else asyncio.SelectorEventLoop()  # type: ignore
-
-    def get_child_watcher(self) -> asyncio.AbstractChildWatcher:
-        if self._local.watcher is None:
-            self._local.watcher = self._init_watcher()
-            self._local.watcher.attach_loop(self._local.loop)
-        return self._local.watcher
-
-    def set_child_watcher(self, watcher: Optional[asyncio.AbstractChildWatcher]) -> None:
-        assert watcher is None or isinstance(watcher, asyncio.AbstractChildWatcher)
-        if self._local.watcher is not None:
-            self._local.watcher.close()
-        self._local.watcher = watcher
-
-    def _init_watcher(self) -> asyncio.AbstractChildWatcher:
-        if sys.platform == "win32":
-            raise NotImplementedError
-
-        try:
-            os.close(os.pidfd_open(os.getpid()))
-            watcher: asyncio.AbstractChildWatcher = asyncio.PidfdChildWatcher()
-            LOGGER.debug("Using PidfdChildWatcher")
-            return watcher
-        except (AttributeError, OSError):
-            # Before Python 3.9 or before Linux 5.3 or the syscall is not
-            # permitted.
-            pass
-
-        if threading.current_thread() is threading.main_thread():
-            LOGGER.debug("Using SafeChildWatcher")
-            return asyncio.SafeChildWatcher()
-        else:
-            LOGGER.debug("Using ThreadedChildWatcher")
-            return asyncio.ThreadedChildWatcher()
+# No longer needed, but alias kept around for compatibility.
+EventLoopPolicy = asyncio.DefaultEventLoopPolicy
 
 
 def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Coroutine[Any, Any, None]], *, name: Optional[str] = None, debug: bool = False, _policy_lock: threading.Lock = threading.Lock()) -> T:
@@ -122,16 +53,9 @@ def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Corout
     Blocks on *future* and returns the result as soon as it is resolved.
     The coroutine and all remaining tasks continue running in the background
     until complete.
-
-    Note: This installs a :class:`chess.engine.EventLoopPolicy` for the entire
-    process.
     """
     assert asyncio.iscoroutinefunction(coroutine)
 
-    with _policy_lock:
-        if not isinstance(asyncio.get_event_loop_policy(), EventLoopPolicy):
-            asyncio.set_event_loop_policy(EventLoopPolicy())
-
     future: concurrent.futures.Future[T] = concurrent.futures.Future()
 
     def background() -> None:
diff --git a/docs/engine.rst b/docs/engine.rst
index 02dd4548f..a326430e0 100644
--- a/docs/engine.rst
+++ b/docs/engine.rst
@@ -58,7 +58,6 @@ Example: Let Stockfish play against itself, 100 milliseconds per move.
 
         await engine.quit()
 
-    asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
     asyncio.run(main())
 
 .. autoclass:: chess.engine.Protocol
@@ -126,7 +125,6 @@ Example:
 
         await engine.quit()
 
-    asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
     asyncio.run(main())
 
 .. autoclass:: chess.engine.Protocol
@@ -189,7 +187,6 @@ Example: Stream information from the engine and stop on an arbitrary condition.
 
         await engine.quit()
 
-    asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
     asyncio.run(main())
 
 .. autoclass:: chess.engine.Protocol
@@ -243,7 +240,6 @@ Options
 
         # [...]
 
-    asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
     asyncio.run(main())
 
 .. autoclass:: chess.engine.Protocol
@@ -315,5 +311,3 @@ Reference
 
 .. autoclass:: chess.engine.SimpleAnalysisResult
     :members:
-
-.. autofunction:: chess.engine.EventLoopPolicy
diff --git a/examples/bratko_kopec/bratko_kopec.py b/examples/bratko_kopec/bratko_kopec.py
index 62e3655a6..2553f4399 100755
--- a/examples/bratko_kopec/bratko_kopec.py
+++ b/examples/bratko_kopec/bratko_kopec.py
@@ -152,5 +152,4 @@ async def main() -> None:
 
 
 if __name__ == "__main__":
-    asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
     asyncio.run(main())
diff --git a/fuzz/engine.py b/fuzz/engine.py
index a08d08bf3..ad0cb9fe9 100644
--- a/fuzz/engine.py
+++ b/fuzz/engine.py
@@ -7,7 +7,6 @@
 
 
 logging.getLogger("chess.engine").setLevel(logging.CRITICAL)
-asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
 
 
 @PythonFuzz
diff --git a/test.py b/test.py
index 6419eb89f..73b96f71c 100755
--- a/test.py
+++ b/test.py
@@ -3114,7 +3114,6 @@ async def main():
             await protocol.ping()
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_uci_debug(self):
@@ -3130,7 +3129,6 @@ async def main():
             protocol.debug(False)
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_uci_go(self):
@@ -3173,7 +3171,6 @@ async def main():
             self.assertEqual(result.ponder, None)
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_iota_log(self):
@@ -3196,7 +3193,6 @@ async def main():
                 await protocol.play(board, chess.engine.Limit(time=5.0))
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_uci_analyse_mode(self):
@@ -3243,7 +3239,6 @@ async def main():
             self.assertEqual(best.ponder, chess.Move.from_uci("e7e5"))
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_uci_play_after_analyse(self):
@@ -3271,7 +3266,6 @@ async def main():
 
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_uci_ponderhit(self):
@@ -3387,7 +3381,6 @@ async def main():
 
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_uci_info(self):
@@ -3474,7 +3467,6 @@ async def main():
             await protocol.send_game_result(checkmate_board)
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_hiarcs_bestmove(self):
@@ -3499,7 +3491,6 @@ async def main():
             self.assertEqual(result.info["string"], "keep double  space")
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_xboard_options(self):
@@ -3562,7 +3553,6 @@ async def main():
             await protocol.configure({"buttonvar": None})
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_xboard_replay(self):
@@ -3624,7 +3614,6 @@ async def main():
             self.assertEqual(result.move, board.parse_san("d4"))
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_xboard_opponent(self):
@@ -3682,7 +3671,6 @@ async def main():
                 result = await protocol.play(board, limit, game="bad game", opponent=bad_opponent)
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_xboard_result(self):
@@ -3772,7 +3760,6 @@ async def main():
             await protocol.send_game_result(material_board)
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_xboard_analyse(self):
@@ -3810,7 +3797,6 @@ async def main():
             self.assertEqual(info["pv"], [chess.Move.from_uci(move) for move in ["f7f6", "e2e4", "e7e6"]])
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_xboard_level(self):
@@ -3855,7 +3841,6 @@ async def main():
             self.assertEqual(result.move, chess.Move.from_uci("d2d4"))
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     def test_xboard_error(self):
@@ -3874,7 +3859,6 @@ async def main():
 
             mock.assert_done()
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     @catchAndSkip(FileNotFoundError, "need /bin/bash")
@@ -3886,7 +3870,6 @@ async def main():
             self.assertNotEqual(results[0], None)
             self.assertNotEqual(results[1], None)
 
-        asyncio.set_event_loop_policy(chess.engine.EventLoopPolicy())
         asyncio.run(main())
 
     @catchAndSkip(FileNotFoundError, "need /bin/bash")

From 61a660f5d94b5be60f5d488f04145cecdb27cf29 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 20:43:43 +0200
Subject: [PATCH 092/250] Rename acknowledgements section

---
 README.rst | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/README.rst b/README.rst
index cbacf299e..d8089b146 100644
--- a/README.rst
+++ b/README.rst
@@ -352,8 +352,8 @@ If you like, share interesting things you are using python-chess for, for exampl
 * an accessible chessboard that allows blind and visually impaired  players  to play chess against Stockfish – https://github.com/blindpandas/chessmart
 
 
-Acknowledgements
-----------------
+Prior art
+---------
 
 Thanks to the Stockfish authors and thanks to Sam Tannous for publishing his
 approach to `avoid rotated bitboards with direct lookup (PDF) <http://arxiv.org/pdf/0704.3773.pdf>`_
@@ -371,4 +371,4 @@ License
 -------
 
 python-chess is licensed under the GPL 3 (or any later version at your option).
-Check out LICENSE.txt for the full text.
+Check out `LICENSE.txt` for the full text.

From 773888594fe44c35b5d070a9b6b04464c07958ef Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 20:47:27 +0200
Subject: [PATCH 093/250] Fix outdated WDL model docs

---
 chess/engine.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 6958479f9..4e18a3cf7 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -453,7 +453,8 @@ def wdl(self, *, model: WdlModel = "sf", ply: int = 30) -> Wdl:
 
         :param model:
             * ``sf``, the WDL model used by the latest Stockfish
-              (currently ``sf15.1``).
+              (currently ``sf16``).
+            * ``sf16``, the WDL model used by Stockfish 16.
             * ``sf15.1``, the WDL model used by Stockfish 15.1.
             * ``sf15``, the WDL model used by Stockfish 15.
             * ``sf14``, the WDL model used by Stockfish 14.

From dc026b9b5a931faa6f47e79cb7da5c61a19bb53b Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 20:57:31 +0200
Subject: [PATCH 094/250] Bump copyright year in docs

---
 docs/conf.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/conf.py b/docs/conf.py
index ede90b63b..22f960575 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -34,7 +34,7 @@
 
 # General information about the project.
 project = "python-chess"
-copyright = "2014–2022, Niklas Fiekas"
+copyright = "2014–2023, Niklas Fiekas"
 
 # The version.
 version = chess.__version__

From 179b6f3032008a500f5c12ab760a7f4037b2b142 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 21:02:50 +0200
Subject: [PATCH 095/250] Remove experimental interactive PGN viewer (closes
 #753)

---
 chess/_interactive.py | 190 ------------------------------------------
 chess/pgn.py          |   5 --
 2 files changed, 195 deletions(-)
 delete mode 100644 chess/_interactive.py

diff --git a/chess/_interactive.py b/chess/_interactive.py
deleted file mode 100644
index edeef3df0..000000000
--- a/chess/_interactive.py
+++ /dev/null
@@ -1,190 +0,0 @@
-# TODO: Fix typing in this file.
-# mypy: ignore-errors
-
-import chess.svg
-
-
-class WidgetError(Exception):
-    """
-    raised when ipywidgets is not installed
-    """
-
-
-class NotJupyter(Exception):
-    """
-    raised when InteractiveViewer is instantiated from a non jupyter shell
-    """
-
-
-try:
-    from ipywidgets import Button, GridBox, Layout, HTML, Output, HBox, Select
-    from IPython.display import display, clear_output
-except ModuleNotFoundError:
-    raise WidgetError("You need to have ipywidgets installed and running from Jupyter")
-
-
-class InteractiveViewer:
-    def __new__(cls, game):
-        jupyter = True
-        try:
-            if get_ipython().__class__.__name__ != "ZMQInteractiveShell":
-                jupyter = False
-        except NameError:
-            jupyter = False
-
-        if not jupyter:
-            raise NotJupyter("The interactive viewer only runs in Jupyter shell")
-
-        return object.__new__(cls)
-
-    def __init__(self, game):
-        self.game = game
-        self.__board = game.board()
-        self.__moves = list(game.mainline_moves())
-        self.__white_moves = [str(move) for (i, move) in enumerate(self.__moves) if i % 2 == 0]
-        self.__black_moves = [str(move) for (i, move) in enumerate(self.__moves) if i % 2 == 1]
-        self.__move_list_len = len(self.__white_moves)
-        self.__num_moves = len(self.__moves)
-        self.__next_move = 0 if self.__moves else None
-        self.__out = Output()
-
-    def __next_click(self, _):
-        move = self.__moves[self.__next_move]
-        self.__next_move += 1
-        self.__board.push(move)
-        self.show()
-
-    def __prev_click(self, _):
-        self.__board.pop()
-        self.__next_move -= 1
-        self.show()
-
-    def __reset_click(self, _):
-        self.__board.reset()
-        self.__next_move = 0
-        self.show()
-
-    def __white_select_change(self, change):
-        new = change["new"]
-        if (isinstance(new, dict)) and ("index" in new):
-            target = new["index"] * 2
-            self.__seek(target)
-            self.show()
-
-    def __black_select_change(self, change):
-        new = change["new"]
-        if (isinstance(new, dict)) and ("index" in new):
-            target = new["index"] * 2 + 1
-            self.__seek(target)
-            self.show()
-
-    def __seek(self, target):
-        while self.__next_move <= target:
-            move = self.__moves[self.__next_move]
-            self.__next_move += 1
-            self.__board.push(move)
-
-        while self.__next_move > target + 1:
-            self.__board.pop()
-            self.__next_move -= 1
-
-    def show(self):
-        display(self.__out)
-        next_move = Button(
-            icon="step-forward",
-            layout=Layout(width="60px", grid_area="right"),
-            disabled=self.__next_move >= self.__num_moves,
-        )
-
-        prev_move = Button(
-            icon="step-backward",
-            layout=Layout(width="60px", grid_area="left"),
-            disabled=self.__next_move == 0,
-        )
-
-        reset = Button(
-            icon="stop",
-            layout=Layout(width="60px", grid_area="middle"),
-            disabled=self.__next_move == 0,
-        )
-
-        if self.__next_move == 0:
-            white_move = None
-            black_move = None
-        else:
-            white_move = (
-                self.__white_moves[self.__next_move // 2]
-                if (self.__next_move % 2) == 1
-                else None
-            )
-            black_move = (
-                self.__black_moves[self.__next_move // 2 - 1]
-                if (self.__next_move % 2) == 0
-                else None
-            )
-
-        white_move_list = Select(
-            options=self.__white_moves,
-            value=white_move,
-            rows=max(self.__move_list_len, 24),
-            disabled=False,
-            layout=Layout(width="80px"),
-        )
-
-        black_move_list = Select(
-            options=self.__black_moves,
-            value=black_move,
-            rows=max(self.__move_list_len, 24),
-            disabled=False,
-            layout=Layout(width="80px"),
-        )
-
-        white_move_list.observe(self.__white_select_change)
-        black_move_list.observe(self.__black_select_change)
-
-        move_number_width = 3 + len(str(self.__move_list_len)) * 10
-
-        move_number = Select(
-            options=range(1, self.__move_list_len + 1),
-            value=None,
-            disabled=True,
-            rows=max(self.__move_list_len, 24),
-            layout=Layout(width=f"{move_number_width}px"),
-        )
-
-        move_list = HBox(
-            [move_number, white_move_list, black_move_list],
-            layout=Layout(height="407px", grid_area="moves"),
-        )
-
-        next_move.on_click(self.__next_click)
-        prev_move.on_click(self.__prev_click)
-        reset.on_click(self.__reset_click)
-
-        with self.__out:
-            grid_box = GridBox(
-                children=[next_move, prev_move, reset, self.svg, move_list],
-                layout=Layout(
-                    width=f"{390+move_number_width+160}px",
-                    grid_template_rows="90% 10%",
-                    grid_template_areas="""
-                                "top top top top top moves"
-                                ". left middle right . moves"
-                                """,
-                ),
-            )
-            clear_output(wait=True)
-            display(grid_box)
-
-    @property
-    def svg(self) -> HTML:
-        svg = chess.svg.board(
-            board=self.__board,
-            size=390,
-            lastmove=self.__board.peek() if self.__board.move_stack else None,
-            check=self.__board.king(self.__board.turn)
-            if self.__board.is_check()
-            else None,
-        )
-        svg_widget = HTML(value=svg, layout=Layout(grid_area="top"))
-        return svg_widget
diff --git a/chess/pgn.py b/chess/pgn.py
index ae22afaf6..9ff218ead 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -804,11 +804,6 @@ def __init__(self, headers: Optional[Union[Mapping[str, str], Iterable[Tuple[str
     def board(self) -> chess.Board:
         return self.headers.board()
 
-    # TODO: Consider naming.
-    def _interactive_viewer(self) -> Any:
-        from chess._interactive import InteractiveViewer
-        return InteractiveViewer(self)  # type: ignore
-
     def ply(self) -> int:
         # Optimization: Parse FEN only for custom starting positions.
         return self.board().ply() if "FEN" in self.headers else 0

From bab76653b11e447f7431106025ddd4ebaefc407e Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 21:30:46 +0200
Subject: [PATCH 096/250] Let setup.py show better error on Python 3.7

---
 setup.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/setup.py b/setup.py
index ed3d8b0bf..8c397e456 100755
--- a/setup.py
+++ b/setup.py
@@ -18,8 +18,13 @@
         end of 2018. Consider upgrading to Python 3.
         """))
 
-if sys.version_info < (3, 7):
-    raise ImportError("Since version 1.0.0, python-chess requires Python 3.7 or later.")
+if sys.version_info < (3, 8):
+    raise ImportError(textwrap.dedent("""\
+        You are trying to install python-chess.
+
+        Since version 1.11.0, python-chess requires Python 3.8 or later.
+        Since version 1.0.0, python-chess requires Python 3.7 or later.
+        """))
 
 import chess
 

From 86da00e86f458537bc1a0a6929149a9d2730dd9a Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 27 Jul 2023 21:32:46 +0200
Subject: [PATCH 097/250] Fix rst syntax

---
 README.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.rst b/README.rst
index d8089b146..8ab138666 100644
--- a/README.rst
+++ b/README.rst
@@ -371,4 +371,4 @@ License
 -------
 
 python-chess is licensed under the GPL 3 (or any later version at your option).
-Check out `LICENSE.txt` for the full text.
+Check out ``LICENSE.txt`` for the full text.

From 60d38d5abea8ef1dc2a4787bd8a8981741324a78 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 30 Jul 2023 18:51:45 +0200
Subject: [PATCH 098/250] Start changelog for next release

---
 CHANGELOG.rst | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index a44b2b070..0fa76effa 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,15 @@
 Changelog for python-chess
 ==========================
 
+Upcoming in the next release
+----------------------------
+
+Changes:
+
+* Dropped support for Python 3.7, which had reached its end of life.
+* `chess.engine.EventLoopPolicy` is no longer needed and now merely an alias
+  for the default event loop policy.
+
 New in v1.10.0 (27th Jul 2023)
 ------------------------------
 

From 7857668ed939d346200ac624bcb7e6cecbebf19e Mon Sep 17 00:00:00 2001
From: mauricesvp <maurice@walny.de>
Date: Wed, 2 Aug 2023 16:00:19 +0200
Subject: [PATCH 099/250] Add PGN TimeControl Header Parser

---
 chess/pgn.py                            | 100 ++++++++++++++++++++++++
 data/pgn/nepomniachtchi-liren-game1.pgn |  22 ++++++
 test.py                                 |  47 +++++++++++
 3 files changed, 169 insertions(+)
 create mode 100644 data/pgn/nepomniachtchi-liren-game1.pgn

diff --git a/chess/pgn.py b/chess/pgn.py
index 9ff218ead..72c613dd4 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import abc
+import dataclasses
 import enum
 import itertools
 import logging
@@ -141,6 +142,39 @@ class SkipType(enum.Enum):
 ResultT = TypeVar("ResultT", covariant=True)
 
 
+class TimeControlType(enum.Enum):
+    UNKNOW = 0
+    UNLIMITED = 1
+    STANDARD = 2
+    RAPID = 3
+    BLITZ = 4
+    BULLET = 5
+
+
+@dataclasses.dataclass
+class TimeControlPart:
+    moves: int = 0
+    time: int = 0
+    increment: float = 0
+    delay: float = 0
+
+
+@dataclasses.dataclass
+class TimeControl:
+    """
+    PGN TimeControl Parser
+    Spec: http://www.saremba.de/chessgml/standards/pgn/pgn-complete.htm#c9.6
+
+    Not Yet Implemented:
+    - Hourglass/Sandclock ('*' prefix)
+    - Differentiating between Bronstein and Simple Delay (Not part of the PGN Spec)
+      - More Info: https://en.wikipedia.org/wiki/Chess_clock#Timing_methods
+    """
+
+    parts: list[TimeControlPart] = dataclasses.field(default_factory=list)
+    type: TimeControlType = TimeControlType.UNKNOW
+
+
 class _AcceptFrame:
     def __init__(self, node: ChildNode, *, is_variation: bool = False, sidelines: bool = True):
         self.state = "pre"
@@ -859,6 +893,14 @@ def accept(self, visitor: BaseVisitor[ResultT]) -> ResultT:
         visitor.end_game()
         return visitor.result()
 
+    def time_control(self) -> TimeControl:
+        """
+        Returns the time control of the game. If the game has no time control
+        information, the default time control ('UNKNOWN') is returned.
+        """
+        time_control_header = self.headers.get("TimeControl", "")
+        return parse_time_control(time_control_header)
+
     @classmethod
     def from_board(cls: Type[GameT], board: chess.Board) -> GameT:
         """Creates a game from the move stack of a :class:`~chess.Board()`."""
@@ -1763,3 +1805,61 @@ def skip_game(handle: TextIO) -> bool:
     Skips a game. Returns ``True`` if a game was found and skipped.
     """
     return bool(read_game(handle, Visitor=SkipVisitor))
+
+
+def parse_time_control(time_control: str) -> TimeControl:
+    tc = TimeControl()
+
+    if not time_control:
+        return tc
+
+    if time_control.startswith("?"):
+        return tc
+
+    if time_control.startswith("-"):
+        tc.type = TimeControlType.UNLIMITED
+        return tc
+
+    def _parse_part(part: str) -> TimeControlPart:
+        tcp = TimeControlPart()
+
+        moves_time, *bonus = part.split("+")
+
+        if bonus:
+            bonus = bonus[0]
+            if bonus.lower().endswith("d"):
+                tcp.delay = float(bonus[:-1])
+            else:
+                tcp.increment = float(bonus)
+
+        moves, *time = moves_time.split("/")
+        if time:
+            tcp.moves = int(moves)
+            tcp.time = int(time[0])
+        else:
+            tcp.moves = 0
+            tcp.time = int(moves)
+
+        return tcp
+
+    tc.parts = [_parse_part(part) for part in time_control.split(":")]
+
+    if len(tc.parts) > 1:
+        for part in tc.parts[:-1]:
+            if part.moves == 0:
+                raise ValueError("Only last part can be 'sudden death'.")
+
+    # Classification according to https://www.fide.com/FIDE/handbook/LawsOfChess.pdf
+    # (Bullet added)
+    base_time = tc.parts[0].time
+    increment = tc.parts[0].increment
+    if (base_time + 60 * increment) < 3 * 60:
+        tc.type = TimeControlType.BULLET
+    elif (base_time + 60 * increment) < 15 * 60:
+        tc.type = TimeControlType.BLITZ
+    elif (base_time + 60 * increment) < 60 * 60:
+        tc.type = TimeControlType.RAPID
+    else:
+        tc.type = TimeControlType.STANDARD
+
+    return tc
diff --git a/data/pgn/nepomniachtchi-liren-game1.pgn b/data/pgn/nepomniachtchi-liren-game1.pgn
new file mode 100644
index 000000000..ea3234154
--- /dev/null
+++ b/data/pgn/nepomniachtchi-liren-game1.pgn
@@ -0,0 +1,22 @@
+[Event "FIDE World Championship 2023"]
+[Site "Astana KAZ"]
+[Date "2023.04.09"]
+[Round "1"]
+[White "Nepomniachtchi, Ian"]
+[Black "Liren, Ding"]
+[Result "1/2-1/2"]
+[TimeControl "40/7200:20/3600:900+30"]
+[WhiteFideId "4168119"]
+[BlackFideId "8603677"]
+[WhiteElo "2795"]
+[BlackElo "2788"]
+
+1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Bxc6 dxc6
+7. Re1 Nd7 8. d4 exd4 9. Qxd4 O-O 10. Bf4 Nc5 11. Qe3 Bg4 12. Nd4
+Qd7 13. Nc3 Rad8 14. Nf5 Ne6 15. Nxe7+ Qxe7 16. Bg3 Bh5 17. f3 f6
+18. h3 h6 19. Kh2 Bf7 20. Rad1 b6 21. a3 a5 22. Ne2 Rxd1 23. Rxd1
+Rd8 24. Rd3 c5 25. Qd2 c6 26. Rxd8+ Nxd8 27. Qf4 b5 28. Qb8 Kh7
+29. Bd6 Qd7 30. Ng3 Ne6 31. f4 h5 32. c3 c4 33. h4 Qd8 34. Qb7
+Be8 35. Nf5 Qd7 36. Qb8 Qd8 37. Qxd8 Nxd8 38. Nd4 Nb7 39. e5 Kg8
+40. Kg3 Bd7 41. Bc7 Nc5 42. Bxa5 Kf7 43. Bb4 Nd3 44. e6+ Bxe6
+45. Nxc6 Bd7 46. Nd4 Nxb2 47. Kf3 Nd3 48. g3 Nc1 49. Ke3 1/2-1/2
diff --git a/test.py b/test.py
index 73b96f71c..e1d0d50c5 100755
--- a/test.py
+++ b/test.py
@@ -2493,6 +2493,53 @@ def test_read_headers(self):
             self.assertEqual(first_drawn_game.headers["Site"], "03")
             self.assertEqual(first_drawn_game[0].move, chess.Move.from_uci("d2d3"))
 
+    def test_parse_time_control(self):
+        with open("data/pgn/nepomniachtchi-liren-game1.pgn") as pgn:
+            game = chess.pgn.read_game(pgn)
+            tc = game.time_control()
+
+            self.assertEqual(tc, chess.pgn.parse_time_control(game.headers["TimeControl"]))
+
+            self.assertEqual(tc.type, chess.pgn.TimeControlType.STANDARD)
+            self.assertEqual(len(tc.parts), 3)
+
+            tcp1, tcp2, tcp3 = tc.parts
+
+            self.assertEqual(tcp1, chess.pgn.TimeControlPart(40, 7200))
+            self.assertEqual(tcp2, chess.pgn.TimeControlPart(20, 3600))
+            self.assertEqual(tcp3, chess.pgn.TimeControlPart(0, 900, 30))
+
+        self.assertEqual(chess.pgn.TimeControlType.BULLET, chess.pgn.parse_time_control("60").type)
+        self.assertEqual(chess.pgn.TimeControlType.BULLET, chess.pgn.parse_time_control("60+1").type)
+
+        self.assertEqual(chess.pgn.TimeControlType.BLITZ, chess.pgn.parse_time_control("60+2").type)
+        self.assertEqual(chess.pgn.TimeControlType.BLITZ, chess.pgn.parse_time_control("300").type)
+        self.assertEqual(chess.pgn.TimeControlType.BLITZ, chess.pgn.parse_time_control("300+3").type)
+
+        self.assertEqual(chess.pgn.TimeControlType.RAPID, chess.pgn.parse_time_control("300+10").type)
+        self.assertEqual(chess.pgn.TimeControlType.RAPID, chess.pgn.parse_time_control("1800").type)
+        self.assertEqual(chess.pgn.TimeControlType.RAPID, chess.pgn.parse_time_control("1800+10").type)
+
+        self.assertEqual(chess.pgn.TimeControlType.STANDARD, chess.pgn.parse_time_control("1800+30").type)
+        self.assertEqual(chess.pgn.TimeControlType.STANDARD, chess.pgn.parse_time_control("5400").type)
+        self.assertEqual(chess.pgn.TimeControlType.STANDARD, chess.pgn.parse_time_control("5400+30").type)
+
+        with self.assertRaises(ValueError):
+            chess.pgn.parse_time_control("300+a")
+
+        with self.assertRaises(ValueError):
+            chess.pgn.parse_time_control("300+ad")
+
+        with self.assertRaises(ValueError):
+            chess.pgn.parse_time_control("600:20/180")
+
+        with self.assertRaises(ValueError):
+            chess.pgn.parse_time_control("abc")
+
+        with self.assertRaises(ValueError):
+            chess.pgn.parse_time_control("40/abc")
+
+
     def test_visit_board(self):
         class TraceVisitor(chess.pgn.BaseVisitor):
             def __init__(self):

From acc85c2c4ede81ccd79183cb05c2754663bcc658 Mon Sep 17 00:00:00 2001
From: mauricesvp <maurice@walny.de>
Date: Wed, 2 Aug 2023 20:53:52 +0200
Subject: [PATCH 100/250] Fix mypy

---
 chess/pgn.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 72c613dd4..55eddbc29 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -1826,11 +1826,11 @@ def _parse_part(part: str) -> TimeControlPart:
         moves_time, *bonus = part.split("+")
 
         if bonus:
-            bonus = bonus[0]
-            if bonus.lower().endswith("d"):
-                tcp.delay = float(bonus[:-1])
+            _bonus = bonus[0]
+            if _bonus.lower().endswith("d"):
+                tcp.delay = float(_bonus[:-1])
             else:
-                tcp.increment = float(bonus)
+                tcp.increment = float(_bonus)
 
         moves, *time = moves_time.split("/")
         if time:

From 48bd065b14c5b61cc94227ed5532a97db8ac5a45 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 2 Aug 2023 21:25:18 +0200
Subject: [PATCH 101/250] Add ColorName literal type

---
 chess/__init__.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 0604cec54..65719fd5c 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -29,7 +29,8 @@
 
 Color = bool
 COLORS = [WHITE, BLACK] = [True, False]
-COLOR_NAMES = ["black", "white"]
+ColorName = Literal["white", "black"]
+COLOR_NAMES: List[ColorName] = ["black", "white"]
 
 PieceType = int
 PIECE_TYPES = [PAWN, KNIGHT, BISHOP, ROOK, QUEEN, KING] = range(1, 7)

From 552d6b8060a4960c765eb591c37a1252f857adbc Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 2 Aug 2023 21:48:32 +0200
Subject: [PATCH 102/250] Import TypedDict directly

---
 chess/engine.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 4e18a3cf7..ed01e353a 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -24,7 +24,7 @@
 
 from chess import Color
 from types import TracebackType
-from typing import Any, Callable, Coroutine, Deque, Dict, Generator, Generic, Iterable, Iterator, List, Literal, Mapping, MutableMapping, Optional, Tuple, Type, TypeVar, Union
+from typing import Any, Callable, Coroutine, Deque, Dict, Generator, Generic, Iterable, Iterator, List, Literal, Mapping, MutableMapping, Optional, Tuple, Type, TypedDict, TypeVar, Union
 
 WdlModel = Literal["sf", "sf16", "sf15.1", "sf15", "sf14", "sf12", "lichess"]
 
@@ -217,7 +217,7 @@ def __repr__(self) -> str:
                       if getattr(self, attr) is not None))
 
 
-class InfoDict(typing.TypedDict, total=False):
+class InfoDict(TypedDict, total=False):
     """
     Dictionary of aggregated information sent by the engine.
 

From e1732436dcd590ea02cd51810c05d9e0ea030cab Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 2 Aug 2023 22:50:44 +0200
Subject: [PATCH 103/250] Remove _policy_lock

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index ed01e353a..fcd92563d 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -46,7 +46,7 @@
 EventLoopPolicy = asyncio.DefaultEventLoopPolicy
 
 
-def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Coroutine[Any, Any, None]], *, name: Optional[str] = None, debug: bool = False, _policy_lock: threading.Lock = threading.Lock()) -> T:
+def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Coroutine[Any, Any, None]], *, name: Optional[str] = None, debug: bool = False) -> T:
     """
     Runs ``coroutine(future)`` in a new event loop on a background thread.
 

From 90eeeb0f9047197bcdfb26879061545cc34bbc94 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 2 Aug 2023 22:53:43 +0200
Subject: [PATCH 104/250] Fix unused debug in chess.engine.run_in_background()

---
 chess/engine.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index fcd92563d..5f50a1414 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -46,7 +46,7 @@
 EventLoopPolicy = asyncio.DefaultEventLoopPolicy
 
 
-def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Coroutine[Any, Any, None]], *, name: Optional[str] = None, debug: bool = False) -> T:
+def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Coroutine[Any, Any, None]], *, name: Optional[str] = None, debug: Optional[bool] = None) -> T:
     """
     Runs ``coroutine(future)`` in a new event loop on a background thread.
 
@@ -60,7 +60,7 @@ def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Corout
 
     def background() -> None:
         try:
-            asyncio.run(coroutine(future))
+            asyncio.run(coroutine(future), debug=debug)
             future.cancel()
         except Exception as exc:
             future.set_exception(exc)
@@ -2894,7 +2894,7 @@ def _shutdown() -> None:
                 self.protocol.loop.call_soon_threadsafe(_shutdown)
 
     @classmethod
-    def popen(cls, Protocol: Type[Protocol], command: Union[str, List[str]], *, timeout: Optional[float] = 10.0, debug: bool = False, setpgrp: bool = False, **popen_args: Any) -> SimpleEngine:
+    def popen(cls, Protocol: Type[Protocol], command: Union[str, List[str]], *, timeout: Optional[float] = 10.0, debug: Optional[bool] = None, setpgrp: bool = False, **popen_args: Any) -> SimpleEngine:
         async def background(future: concurrent.futures.Future[SimpleEngine]) -> None:
             transport, protocol = await Protocol.popen(command, setpgrp=setpgrp, **popen_args)
             threading.current_thread().name = f"{cls.__name__} (pid={transport.get_pid()})"
@@ -2911,7 +2911,7 @@ async def background(future: concurrent.futures.Future[SimpleEngine]) -> None:
         return run_in_background(background, name=f"{cls.__name__} (command={command!r})", debug=debug)
 
     @classmethod
-    def popen_uci(cls, command: Union[str, List[str]], *, timeout: Optional[float] = 10.0, debug: bool = False, setpgrp: bool = False, **popen_args: Any) -> SimpleEngine:
+    def popen_uci(cls, command: Union[str, List[str]], *, timeout: Optional[float] = 10.0, debug: Optional[bool] = None, setpgrp: bool = False, **popen_args: Any) -> SimpleEngine:
         """
         Spawns and initializes a UCI engine.
         Returns a :class:`~chess.engine.SimpleEngine` instance.
@@ -2919,7 +2919,7 @@ def popen_uci(cls, command: Union[str, List[str]], *, timeout: Optional[float] =
         return cls.popen(UciProtocol, command, timeout=timeout, debug=debug, setpgrp=setpgrp, **popen_args)
 
     @classmethod
-    def popen_xboard(cls, command: Union[str, List[str]], *, timeout: Optional[float] = 10.0, debug: bool = False, setpgrp: bool = False, **popen_args: Any) -> SimpleEngine:
+    def popen_xboard(cls, command: Union[str, List[str]], *, timeout: Optional[float] = 10.0, debug: Optional[bool] = None, setpgrp: bool = False, **popen_args: Any) -> SimpleEngine:
         """
         Spawns and initializes an XBoard engine.
         Returns a :class:`~chess.engine.SimpleEngine` instance.

From 35b961c17b7a6dcbad98f4f3bfb9df115a28db29 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 6 Aug 2023 10:47:25 +0200
Subject: [PATCH 105/250] Avoid start_new_session if possible

---
 chess/engine.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 5f50a1414..01ee08b3e 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1180,7 +1180,11 @@ async def popen(cls: Type[ProtocolT], command: Union[str, List[str]], *, setpgrp
                 popen_args["creationflags"] = popen_args.get("creationflags", 0) | subprocess.CREATE_NEW_PROCESS_GROUP  # type: ignore
             except AttributeError:
                 # Unix.
-                popen_args["start_new_session"] = True
+                if sys.version_info >= (3, 11):
+                    popen_args["process_group"] = 0
+                else:
+                    # Before Python 3.11
+                    popen_args["start_new_session"] = True
 
         return await asyncio.get_running_loop().subprocess_exec(cls, *command, **popen_args)
 

From b6a04e8db55b6fca08250ba883aba50c60a3c589 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 3 Sep 2023 21:37:44 -0700
Subject: [PATCH 106/250] Delete unused imports

---
 chess/engine.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 01ee08b3e..0b0f061dc 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -10,14 +10,12 @@
 import enum
 import logging
 import math
-import warnings
 import shlex
 import subprocess
 import sys
 import threading
 import time
 import typing
-import os
 import re
 
 import chess

From e9997d52c8c06b773a797029ee7ba8630c0829bd Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 5 Sep 2023 22:56:14 -0700
Subject: [PATCH 107/250] Create new function for parsing engine output

The function next_token() extracts the next word from a string and
removes the leading and trailing whitespace around that word. It
also returns the remainder of the string unchanged. Using this function
instead of split() gets rid of extraneous whitespace when searching
for keywords and preserves whitespace in strings generated by
users and their engines.
---
 chess/engine.py | 169 +++++++++++++++++++++++++++++++-----------------
 1 file changed, 110 insertions(+), 59 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 0b0f061dc..22b6125dd 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1303,14 +1303,15 @@ def start(self, engine: UciProtocol) -> None:
                 engine.send_line("uci")
 
             def line_received(self, engine: UciProtocol, line: str) -> None:
-                if line == "uciok" and not self.result.done():
+                token, remaining = _next_token(line)
+                if line.strip() == "uciok" and not self.result.done():
                     engine.initialized = True
                     self.result.set_result(None)
                     self.set_finished()
-                elif line.startswith("option "):
-                    self._option(engine, line.split(" ", 1)[1])
-                elif line.startswith("id "):
-                    self._id(engine, line.split(" ", 1)[1])
+                elif token == "option":
+                    self._option(engine, remaining)
+                elif token == "id":
+                    self._id(engine, remaining)
 
             def _option(self, engine: UciProtocol, arg: str) -> None:
                 current_parameter = None
@@ -1371,8 +1372,8 @@ def _option(self, engine: UciProtocol, arg: str) -> None:
                     engine.target_config[option.name] = option.default
 
             def _id(self, engine: UciProtocol, arg: str) -> None:
-                key, value = arg.split(" ", 1)
-                engine.id[key] = value
+                key, value = _next_token(arg)
+                engine.id[key] = value.strip()
 
         return await self.communicate(UciInitializeCommand)
 
@@ -1587,11 +1588,12 @@ def start(self, engine: UciProtocol) -> None:
                     self._readyok(engine)
 
             def line_received(self, engine: UciProtocol, line: str) -> None:
-                if line.startswith("info "):
-                    self._info(engine, line.split(" ", 1)[1])
-                elif line.startswith("bestmove "):
-                    self._bestmove(engine, line.split(" ", 1)[1])
-                elif line == "readyok" and self.sent_isready:
+                token, remaining = _next_token(line)
+                if token == "info":
+                    self._info(engine, remaining)
+                elif token == "bestmove":
+                    self._bestmove(engine, remaining)
+                elif line.strip() == "readyok" and self.sent_isready:
                     self._readyok(engine)
                 else:
                     LOGGER.warning("%s: Unexpected engine output: %r", engine, line)
@@ -1679,11 +1681,12 @@ def start(self, engine: UciProtocol) -> None:
                     self._readyok(engine)
 
             def line_received(self, engine: UciProtocol, line: str) -> None:
-                if line.startswith("info "):
-                    self._info(engine, line.split(" ", 1)[1])
-                elif line.startswith("bestmove "):
-                    self._bestmove(engine, line.split(" ", 1)[1])
-                elif line == "readyok" and self.sent_isready:
+                token, remaining = _next_token(line)
+                if token == "info":
+                    self._info(engine, remaining)
+                elif token == "bestmove":
+                    self._bestmove(engine, remaining)
+                elif line.strip() == "readyok" and self.sent_isready:
                     self._readyok(engine)
                 else:
                     LOGGER.warning("%s: Unexpected engine output: %r", engine, line)
@@ -1733,34 +1736,39 @@ def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL
     if not selector:
         return info
 
-    tokens = arg.split(" ")
-    while tokens:
-        parameter = tokens.pop(0)
+    remaining_line = arg
+    while remaining_line:
+        parameter, remaining_line = _next_token(remaining_line)
 
         if parameter == "string":
-            info["string"] = " ".join(tokens)
+            info["string"] = remaining_line
             break
         elif parameter in ["depth", "seldepth", "nodes", "multipv", "currmovenumber", "hashfull", "nps", "tbhits", "cpuload"]:
             try:
-                info[parameter] = int(tokens.pop(0))  # type: ignore
+                number, remaining_line = _next_token(remaining_line)
+                info[parameter] = int(number)  # type: ignore
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing %s from info: %r", parameter, arg)
         elif parameter == "time":
             try:
-                info["time"] = int(tokens.pop(0)) / 1000.0
+                time_ms, remaining_line = _next_token(remaining_line)
+                info["time"] = int(time_ms) / 1000.0
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing %s from info: %r", parameter, arg)
         elif parameter == "ebf":
             try:
-                info["ebf"] = float(tokens.pop(0))
+                number, remaining_line = _next_token(remaining_line)
+                info["ebf"] = float(number)
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing %s from info: %r", parameter, arg)
         elif parameter == "score" and selector & INFO_SCORE:
             try:
-                kind = tokens.pop(0)
-                value = tokens.pop(0)
-                if tokens and tokens[0] in ["lowerbound", "upperbound"]:
-                    info[tokens.pop(0)] = True  # type: ignore
+                kind, remaining_line = _next_token(remaining_line)
+                value, remaining_line = _next_token(remaining_line)
+                token, remaining_after_token = _next_token(remaining_line)
+                if token in ["lowerbound", "upperbound"]:
+                    info[token] = True  # type: ignore
+                    remaining_line = remaining_after_token
                 if kind == "cp":
                     info["score"] = PovScore(Cp(int(value)), root_board.turn)
                 elif kind == "mate":
@@ -1771,7 +1779,8 @@ def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL
                 LOGGER.error("Exception parsing score from info: %r", arg)
         elif parameter == "currmove":
             try:
-                info["currmove"] = chess.Move.from_uci(tokens.pop(0))
+                current_move, remaining_line = _next_token(remaining_line)
+                info["currmove"] = chess.Move.from_uci(current_move)
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing currmove from info: %r", arg)
         elif parameter == "currline" and selector & INFO_CURRLINE:
@@ -1779,13 +1788,19 @@ def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL
                 if "currline" not in info:
                     info["currline"] = {}
 
-                cpunr = int(tokens.pop(0))
+                cpunr_text, remaining_line = _next_token(remaining_line)
+                cpunr = int(cpunr_text)
                 currline: List[chess.Move] = []
                 info["currline"][cpunr] = currline
 
                 board = root_board.copy(stack=False)
-                while tokens and UCI_REGEX.match(tokens[0]):
-                    currline.append(board.push_uci(tokens.pop(0)))
+                while True:
+                    next_move, remaining_line_after_move = _next_token(remaining_line)
+                    if UCI_REGEX.match(next_move):
+                        currline.append(board.push_uci(next_move))
+                        remaining_line = remaining_line_after_move
+                    else:
+                        break
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing currline from info: %r, position at root: %s", arg, root_board.fen())
         elif parameter == "refutation" and selector & INFO_REFUTATION:
@@ -1794,13 +1809,19 @@ def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL
                     info["refutation"] = {}
 
                 board = root_board.copy(stack=False)
-                refuted = board.push_uci(tokens.pop(0))
+                refuted_text, remaining_line = _next_token(remaining_line)
+                refuted = board.push_uci(refuted_text)
 
                 refuted_by: List[chess.Move] = []
                 info["refutation"][refuted] = refuted_by
 
-                while tokens and UCI_REGEX.match(tokens[0]):
-                    refuted_by.append(board.push_uci(tokens.pop(0)))
+                while True:
+                    token, remaining_line_after_move = _next_token(remaining_line)
+                    if UCI_REGEX.match(token):
+                        refuted_by.append(board.push_uci(token))
+                        remaining_line = remaining_line_after_move
+                    else:
+                        break
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing refutation from info: %r, position at root: %s", arg, root_board.fen())
         elif parameter == "pv" and selector & INFO_PV:
@@ -1808,13 +1829,21 @@ def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL
                 pv: List[chess.Move] = []
                 info["pv"] = pv
                 board = root_board.copy(stack=False)
-                while tokens and UCI_REGEX.match(tokens[0]):
-                    pv.append(board.push_uci(tokens.pop(0)))
+                while True:
+                    token, remaining_line_after_pv = _next_token(remaining_line)
+                    if UCI_REGEX.match(token):
+                        pv.append(board.push_uci(token))
+                        remaining_line = remaining_line_after_pv
+                    else:
+                        break
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing pv from info: %r, position at root: %s", arg, root_board.fen())
         elif parameter == "wdl":
             try:
-                info["wdl"] = PovWdl(Wdl(int(tokens.pop(0)), int(tokens.pop(0)), int(tokens.pop(0))), root_board.turn)
+                wins, remaining_line = _next_token(remaining_line)
+                draws, remaining_line = _next_token(remaining_line)
+                losses, remaining_line = _next_token(remaining_line)
+                info["wdl"] = PovWdl(Wdl(int(wins), int(draws), int(losses)), root_board.turn)
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing wdl from info: %r", arg)
 
@@ -1944,10 +1973,11 @@ def timeout(self, engine: XBoardProtocol) -> None:
                 self.end(engine)
 
             def line_received(self, engine: XBoardProtocol, line: str) -> None:
-                if line.startswith("#"):
+                token, remaining = _next_token(line)
+                if token.startswith("#"):
                     pass
-                elif line.startswith("feature "):
-                    self._feature(engine, line.split(" ", 1)[1])
+                elif token == "feature":
+                    self._feature(engine, remaining)
                 elif XBOARD_ERROR_REGEX.match(line):
                     raise EngineError(line)
 
@@ -2159,32 +2189,35 @@ def start(self, engine: XBoardProtocol) -> None:
                 engine.send_line("go")
 
             def line_received(self, engine: XBoardProtocol, line: str) -> None:
-                if line.startswith("move "):
-                    self._move(engine, line.split(" ", 1)[1])
-                elif line.startswith("Hint: "):
-                    self._hint(engine, line.split(" ", 1)[1])
-                elif line == self.pong_after_move:
-                    if not self.result.done():
-                        self.result.set_result(self.play_result)
-                    if not ponder:
+                token, remaining = _next_token(line)
+                if token == "move":
+                    self._move(engine, remaining.strip())
+                elif token == "Hint:":
+                    self._hint(engine, remaining.strip())
+                elif token == "pong":
+                    pong_line = f"{token} {remaining.strip()}"
+                    if pong_line == self.pong_after_move:
+                        if not self.result.done():
+                            self.result.set_result(self.play_result)
+                        if not ponder:
+                            self.set_finished()
+                    elif pong_line == self.pong_after_ponder:
+                        if not self.result.done():
+                            self.result.set_result(self.play_result)
                         self.set_finished()
-                elif line == self.pong_after_ponder:
-                    if not self.result.done():
-                        self.result.set_result(self.play_result)
-                    self.set_finished()
-                elif line == "offer draw":
+                elif f"{token} {remaining.strip()}" == "offer draw":
                     if not self.result.done():
                         self.play_result.draw_offered = True
                     self._ping_after_move(engine)
-                elif line == "resign":
+                elif line.strip() == "resign":
                     if not self.result.done():
                         self.play_result.resigned = True
                     self._ping_after_move(engine)
-                elif line.startswith("1-0") or line.startswith("0-1") or line.startswith("1/2-1/2"):
+                elif token in ["1-0", "0-1", "1/2-1/2"]:
                     if "resign" in line and not self.result.done():
                         self.play_result.resigned = True
                     self._ping_after_move(engine)
-                elif line.startswith("#"):
+                elif token.startswith("#"):
                     pass
                 elif XBOARD_ERROR_REGEX.match(line):
                     engine.first_game = True  # Board state might no longer be in sync
@@ -2291,11 +2324,12 @@ def start(self, engine: XBoardProtocol) -> None:
                     self.time_limit_handle = None
 
             def line_received(self, engine: XBoardProtocol, line: str) -> None:
-                if line.startswith("#"):
+                token, remaining = _next_token(line)
+                if token.startswith("#"):
                     pass
                 elif len(line.split()) >= 4 and line.lstrip()[0].isdigit():
                     self._post(engine, line)
-                elif line == self.final_pong:
+                elif f"{token} {remaining.strip()}" == self.final_pong:
                     self.end(engine)
                 elif XBOARD_ERROR_REGEX.match(line):
                     engine.first_game = True  # Board state might no longer be in sync
@@ -2551,6 +2585,23 @@ def _parse_xboard_post(line: str, root_board: chess.Board, selector: Info = INFO
     return info
 
 
+def _next_token(line: str) -> tuple[str, str]:
+    """Get the next token in a whitespace-delimited line of text.
+
+    The result is returned as a 2-part tuple of strings.
+
+    If the input line is empty or all whitespace, then the result is two
+    empty strings.
+
+    If the input line is not empty and not completely whitespace, then
+    the first element of the returned tuple is a single word with
+    leading and trailing whitespace removed. The second element is the
+    unchanged rest of the line."""
+
+    parts = line.split(maxsplit=1)
+    return (parts[0] if parts else "", parts[1] if len(parts) == 2 else "")
+
+
 class BestMove:
     """Returned by :func:`chess.engine.AnalysisResult.wait()`."""
 

From a68636e7a82841e4389b1d53390b6b33ff7a43e5 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 10 Sep 2023 01:34:03 -0700
Subject: [PATCH 108/250] Split on all whitespace

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 22b6125dd..c8ed5cd4d 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1324,7 +1324,7 @@ def _option(self, engine: UciProtocol, arg: str) -> None:
                 current_var = None
                 var = []
 
-                for token in arg.strip().split(" "):
+                for token in arg.split():
                     if token == "name" and not name:
                         current_parameter = "name"
                     elif token == "type" and not type:

From dbc278f7cedb33409fc60186df20e1ac55ab39b3 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 10 Sep 2023 01:34:40 -0700
Subject: [PATCH 109/250] Gather repeated code in option parsing

---
 chess/engine.py | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index c8ed5cd4d..1ec7c2c8e 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1323,6 +1323,13 @@ def _option(self, engine: UciProtocol, arg: str) -> None:
                 max = None
                 current_var = None
                 var = []
+                
+                def parse_min_max_value(token: str, which: Literal["min", "max"]):
+                    try:
+                        return int(token)
+                    except ValueError:
+                        LOGGER.exception(f"Exception parsing option {which}")
+                        return None
 
                 for token in arg.split():
                     if token == "name" and not name:
@@ -1349,15 +1356,9 @@ def _option(self, engine: UciProtocol, arg: str) -> None:
                     elif current_parameter == "var":
                         current_var.append(token)
                     elif current_parameter == "min":
-                        try:
-                            min = int(token)
-                        except ValueError:
-                            LOGGER.exception("Exception parsing option min")
+                        min = parse_min_max_value(token, "min")
                     elif current_parameter == "max":
-                        try:
-                            max = int(token)
-                        except ValueError:
-                            LOGGER.exception("Exception parsing option max")
+                        max = parse_min_max_value(token, "max")
 
                 if current_var is not None:
                     var.append(" ".join(current_var))

From 2e6ff83ace87d54da0cea6c679ae1b642afe8331 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 10 Sep 2023 02:09:09 -0700
Subject: [PATCH 110/250] Create function for repeated code

---
 chess/engine.py | 43 +++++++++++++++----------------------------
 1 file changed, 15 insertions(+), 28 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 1ec7c2c8e..72681a627 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1732,6 +1732,18 @@ async def quit(self) -> None:
 
 UCI_REGEX = re.compile(r"^[a-h][1-8][a-h][1-8][pnbrqk]?|[PNBRQK]@[a-h][1-8]|0000\Z")
 
+def _create_variation_line(root_board: chess.Board, line: str) -> tuple[list[chess.Move], str]:
+    board = root_board.copy(stack=False)
+    currline: list[chess.Move] = []
+    while True:
+        next_move, remaining_line_after_move = _next_token(line)
+        if UCI_REGEX.match(next_move):
+            currline.append(board.push_uci(next_move))
+            line = remaining_line_after_move
+        else:
+            return currline, line
+        
+
 def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL) -> InfoDict:
     info: InfoDict = {}
     if not selector:
@@ -1791,17 +1803,8 @@ def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL
 
                 cpunr_text, remaining_line = _next_token(remaining_line)
                 cpunr = int(cpunr_text)
-                currline: List[chess.Move] = []
+                currline, remaining_line = _create_variation_line(root_board, remaining_line)
                 info["currline"][cpunr] = currline
-
-                board = root_board.copy(stack=False)
-                while True:
-                    next_move, remaining_line_after_move = _next_token(remaining_line)
-                    if UCI_REGEX.match(next_move):
-                        currline.append(board.push_uci(next_move))
-                        remaining_line = remaining_line_after_move
-                    else:
-                        break
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing currline from info: %r, position at root: %s", arg, root_board.fen())
         elif parameter == "refutation" and selector & INFO_REFUTATION:
@@ -1813,30 +1816,14 @@ def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL
                 refuted_text, remaining_line = _next_token(remaining_line)
                 refuted = board.push_uci(refuted_text)
 
-                refuted_by: List[chess.Move] = []
+                refuted_by, remaining_line = _create_variation_line(board, remaining_line)
                 info["refutation"][refuted] = refuted_by
-
-                while True:
-                    token, remaining_line_after_move = _next_token(remaining_line)
-                    if UCI_REGEX.match(token):
-                        refuted_by.append(board.push_uci(token))
-                        remaining_line = remaining_line_after_move
-                    else:
-                        break
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing refutation from info: %r, position at root: %s", arg, root_board.fen())
         elif parameter == "pv" and selector & INFO_PV:
             try:
-                pv: List[chess.Move] = []
+                pv, remaining_line = _create_variation_line(root_board, remaining_line)
                 info["pv"] = pv
-                board = root_board.copy(stack=False)
-                while True:
-                    token, remaining_line_after_pv = _next_token(remaining_line)
-                    if UCI_REGEX.match(token):
-                        pv.append(board.push_uci(token))
-                        remaining_line = remaining_line_after_pv
-                    else:
-                        break
             except (ValueError, IndexError):
                 LOGGER.error("Exception parsing pv from info: %r, position at root: %s", arg, root_board.fen())
         elif parameter == "wdl":

From 7aaf9d324f28e9b6a3abc82e284b7e5224b8438f Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 10 Sep 2023 02:20:11 -0700
Subject: [PATCH 111/250] Fix tox.ini comments

Latest version of flake8 no longer allows inline comments in config file.
---
 tox.ini | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/tox.ini b/tox.ini
index 665e9f38b..f629723cd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,11 +20,18 @@ commands =
 
 [flake8]
 ignore =
-    E126 E131  # Allow over-indent and unaligned indent
-    E241  # Allow indenting array elements
-    E302 E305  # Allow grouping functions
-    E741  # Allow "ambiguous" variable names
-    W504  # Allow binary operators before EOL (end of line)
-    E704 E301  # Allow "def overloaded(): ..."
-    E722  # Bare except (with or without reraise)
+    # Allow over-indent and unaligned indent
+    E126 E131
+    # Allow indenting array elements
+    E241
+    # Allow grouping functions
+    E302 E305
+    # Allow "ambiguous" variable names
+    E741
+    # Allow binary operators before EOL (end of line)
+    W504
+    # Allow "def overloaded(): ..."
+    E704 E301
+    # Bare except (with or without reraise)
+    E722
 max-line-length = 160

From 3cb886c7a0bae1c1163db6340da8c989d4625a66 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 10 Sep 2023 02:22:53 -0700
Subject: [PATCH 112/250] Add return value annotation

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 72681a627..74aeb9980 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1324,7 +1324,7 @@ def _option(self, engine: UciProtocol, arg: str) -> None:
                 current_var = None
                 var = []
                 
-                def parse_min_max_value(token: str, which: Literal["min", "max"]):
+                def parse_min_max_value(token: str, which: Literal["min", "max"]) -> Optional[int]:
                     try:
                         return int(token)
                     except ValueError:

From 69041525dd05b496ab01d839880f437093f66536 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 10 Sep 2023 16:22:58 -0700
Subject: [PATCH 113/250] Delete trailing whitespace

---
 chess/engine.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 74aeb9980..7a8bbc845 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1323,7 +1323,7 @@ def _option(self, engine: UciProtocol, arg: str) -> None:
                 max = None
                 current_var = None
                 var = []
-                
+
                 def parse_min_max_value(token: str, which: Literal["min", "max"]) -> Optional[int]:
                     try:
                         return int(token)
@@ -1742,7 +1742,7 @@ def _create_variation_line(root_board: chess.Board, line: str) -> tuple[list[che
             line = remaining_line_after_move
         else:
             return currline, line
-        
+
 
 def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL) -> InfoDict:
     info: InfoDict = {}

From 55060d497b2c56d96ff5935329645c5d2f3dc818 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 10 Sep 2023 16:24:24 -0700
Subject: [PATCH 114/250] Simplify UCI option parsing with regex

---
 chess/engine.py | 32 +++++++++++++-------------------
 1 file changed, 13 insertions(+), 19 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 7a8bbc845..80312fa19 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1274,6 +1274,8 @@ def __repr__(self) -> str:
         return "<{} at {:#x} (state={}, result={}, finished={}>".format(type(self).__name__, id(self), self.state, self.result, self.finished)
 
 
+UCI_OPTION_REGEX = re.compile(r"\s*(name|type|default|min|max|var)\s*")
+
 class UciProtocol(Protocol):
     """
     An implementation of the
@@ -1314,14 +1316,11 @@ def line_received(self, engine: UciProtocol, line: str) -> None:
                     self._id(engine, remaining)
 
             def _option(self, engine: UciProtocol, arg: str) -> None:
-                current_parameter = None
-
-                name: List[str] = []
-                type: List[str] = []
-                default: List[str] = []
+                name = ""
+                type = ""
+                default = ""
                 min = None
                 max = None
-                current_var = None
                 var = []
 
                 def parse_min_max_value(token: str, which: Literal["min", "max"]) -> Optional[int]:
@@ -1331,7 +1330,8 @@ def parse_min_max_value(token: str, which: Literal["min", "max"]) -> Optional[in
                         LOGGER.exception(f"Exception parsing option {which}")
                         return None
 
-                for token in arg.split():
+                current_parameter = None
+                for token in UCI_OPTION_REGEX.split(arg):
                     if token == "name" and not name:
                         current_parameter = "name"
                     elif token == "type" and not type:
@@ -1344,27 +1344,21 @@ def parse_min_max_value(token: str, which: Literal["min", "max"]) -> Optional[in
                         current_parameter = "max"
                     elif token == "var":
                         current_parameter = "var"
-                        if current_var is not None:
-                            var.append(" ".join(current_var))
-                        current_var = []
                     elif current_parameter == "name":
-                        name.append(token)
+                        name = token
                     elif current_parameter == "type":
-                        type.append(token)
+                        type = token
                     elif current_parameter == "default":
-                        default.append(token)
+                        default = token
                     elif current_parameter == "var":
-                        current_var.append(token)
+                        var.append(token)
                     elif current_parameter == "min":
                         min = parse_min_max_value(token, "min")
                     elif current_parameter == "max":
                         max = parse_min_max_value(token, "max")
 
-                if current_var is not None:
-                    var.append(" ".join(current_var))
-
-                without_default = Option(" ".join(name), " ".join(type), None, min, max, var)
-                option = Option(without_default.name, without_default.type, without_default.parse(" ".join(default)), min, max, var)
+                without_default = Option(name, type, None, min, max, var)
+                option = Option(without_default.name, without_default.type, without_default.parse(default), min, max, var)
                 engine.options[option.name] = option
 
                 if option.default is not None:

From 4cb2b9a85f682091500ccb947dda73e305361e94 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 12 Sep 2023 23:06:30 -0700
Subject: [PATCH 115/250] Simplify UCI option parsing

Replace repeated code with a dictionary.
---
 chess/engine.py | 52 ++++++++++++++++++-------------------------------
 1 file changed, 19 insertions(+), 33 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 80312fa19..33c2a3e8c 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1276,6 +1276,7 @@ def __repr__(self) -> str:
 
 UCI_OPTION_REGEX = re.compile(r"\s*(name|type|default|min|max|var)\s*")
 
+
 class UciProtocol(Protocol):
     """
     An implementation of the
@@ -1316,46 +1317,31 @@ def line_received(self, engine: UciProtocol, line: str) -> None:
                     self._id(engine, remaining)
 
             def _option(self, engine: UciProtocol, arg: str) -> None:
-                name = ""
-                type = ""
-                default = ""
-                min = None
-                max = None
+                current_parameter = None
+                option_parts: dict[str, str] = {k: "" for k in ["name", "type", "default", "min", "max"]}
                 var = []
 
-                def parse_min_max_value(token: str, which: Literal["min", "max"]) -> Optional[int]:
+                for token in UCI_OPTION_REGEX.split(arg):
+                    if token == "var" or (token in option_parts and not option_parts[token]):
+                        current_parameter = token
+                    elif current_parameter == "var":
+                        var.append(token)
+                    elif current_parameter:
+                        option_parts[current_parameter] = token
+
+                def parse_min_max_value(option_parts: dict[str, str], which: Literal["min", "max"]) -> Optional[int]:
                     try:
-                        return int(token)
+                        number = option_parts[which]
+                        return int(number) if number else None
                     except ValueError:
                         LOGGER.exception(f"Exception parsing option {which}")
                         return None
 
-                current_parameter = None
-                for token in UCI_OPTION_REGEX.split(arg):
-                    if token == "name" and not name:
-                        current_parameter = "name"
-                    elif token == "type" and not type:
-                        current_parameter = "type"
-                    elif token == "default" and not default:
-                        current_parameter = "default"
-                    elif token == "min" and min is None:
-                        current_parameter = "min"
-                    elif token == "max" and max is None:
-                        current_parameter = "max"
-                    elif token == "var":
-                        current_parameter = "var"
-                    elif current_parameter == "name":
-                        name = token
-                    elif current_parameter == "type":
-                        type = token
-                    elif current_parameter == "default":
-                        default = token
-                    elif current_parameter == "var":
-                        var.append(token)
-                    elif current_parameter == "min":
-                        min = parse_min_max_value(token, "min")
-                    elif current_parameter == "max":
-                        max = parse_min_max_value(token, "max")
+                name = option_parts["name"]
+                type = option_parts["type"]
+                default = option_parts["default"]
+                min = parse_min_max_value(option_parts, "min")
+                max = parse_min_max_value(option_parts, "max")
 
                 without_default = Option(name, type, None, min, max, var)
                 option = Option(without_default.name, without_default.type, without_default.parse(default), min, max, var)

From fb991b817718770fdd0291ae4aa962df2ce9cf61 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Tue, 12 Sep 2023 23:28:50 -0700
Subject: [PATCH 116/250] Consolidate UCI option parameter list

---
 chess/engine.py | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 33c2a3e8c..126668c7d 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1274,9 +1274,6 @@ def __repr__(self) -> str:
         return "<{} at {:#x} (state={}, result={}, finished={}>".format(type(self).__name__, id(self), self.state, self.result, self.finished)
 
 
-UCI_OPTION_REGEX = re.compile(r"\s*(name|type|default|min|max|var)\s*")
-
-
 class UciProtocol(Protocol):
     """
     An implementation of the
@@ -1321,7 +1318,9 @@ def _option(self, engine: UciProtocol, arg: str) -> None:
                 option_parts: dict[str, str] = {k: "" for k in ["name", "type", "default", "min", "max"]}
                 var = []
 
-                for token in UCI_OPTION_REGEX.split(arg):
+                parameters = list(option_parts.keys()) + ['var']
+                option_regex = fr"\s*({'|'.join(parameters)})\s*"
+                for token in re.split(option_regex, arg):
                     if token == "var" or (token in option_parts and not option_parts[token]):
                         current_parameter = token
                     elif current_parameter == "var":

From f22e3282b69abe37204589829d1eb09267174261 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 13 Sep 2023 00:12:22 -0700
Subject: [PATCH 117/250] Trim whitespace from option line

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 126668c7d..45fe56372 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1320,7 +1320,7 @@ def _option(self, engine: UciProtocol, arg: str) -> None:
 
                 parameters = list(option_parts.keys()) + ['var']
                 option_regex = fr"\s*({'|'.join(parameters)})\s*"
-                for token in re.split(option_regex, arg):
+                for token in re.split(option_regex, arg.strip()):
                     if token == "var" or (token in option_parts and not option_parts[token]):
                         current_parameter = token
                     elif current_parameter == "var":

From f2fd4d3257e7f0cf8078cafa44a25a9d6e4e40c9 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 13 Sep 2023 00:26:11 -0700
Subject: [PATCH 118/250] Strip whitespace when receiving "readyok"

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 45fe56372..9a7a0aa8a 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1387,7 +1387,7 @@ def start(self, engine: UciProtocol) -> None:
                 engine._isready()
 
             def line_received(self, engine: UciProtocol, line: str) -> None:
-                if line == "readyok":
+                if line.strip() == "readyok":
                     self.result.set_result(None)
                     self.set_finished()
                 else:

From 312e477ad24905941d3adbaf8e4b4aaa002e2ba3 Mon Sep 17 00:00:00 2001
From: Josh Giesbrecht <josh@thoughtlost.org>
Date: Fri, 22 Sep 2023 20:52:21 -0700
Subject: [PATCH 119/250] Update README.rst

PicoChess URL seems to have changed - .org domain goes to a domain-for-sale page.
---
 README.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.rst b/README.rst
index 8ab138666..f4cfd955c 100644
--- a/README.rst
+++ b/README.rst
@@ -338,7 +338,7 @@ If you like, share interesting things you are using python-chess for, for exampl
 +------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+
 
 * extensions to build engines (search and evaluation) – https://github.com/Mk-Chan/python-chess-engine-extensions
-* a stand-alone chess computer based on DGT board – http://www.picochess.org/
+* a stand-alone chess computer based on DGT board – http://picochess.com/
 * a bridge between Lichess API and chess engines – https://github.com/careless25/lichess-bot
 * a command-line PGN annotator – https://github.com/rpdelaney/python-chess-annotator
 * an HTTP microservice to render board images – https://github.com/niklasf/web-boardimage

From c0bb57204f7f24c8640ba81a819b41ee3e17f253 Mon Sep 17 00:00:00 2001
From: Mark Harrison <MarkZH@users.noreply.github.com>
Date: Fri, 22 Sep 2023 21:04:30 -0700
Subject: [PATCH 120/250] Update lichess-bot URL in README.rst

---
 README.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.rst b/README.rst
index 8ab138666..cf249e466 100644
--- a/README.rst
+++ b/README.rst
@@ -339,7 +339,7 @@ If you like, share interesting things you are using python-chess for, for exampl
 
 * extensions to build engines (search and evaluation) – https://github.com/Mk-Chan/python-chess-engine-extensions
 * a stand-alone chess computer based on DGT board – http://www.picochess.org/
-* a bridge between Lichess API and chess engines – https://github.com/careless25/lichess-bot
+* a bridge between Lichess API and chess engines – https://github.com/lichess-bot-devs/lichess-bot
 * a command-line PGN annotator – https://github.com/rpdelaney/python-chess-annotator
 * an HTTP microservice to render board images – https://github.com/niklasf/web-boardimage
 * building a toy chess engine with alpha-beta pruning, piece-square tables, and move ordering – https://healeycodes.com/building-my-own-chess-engine/

From e773cd4eb93519397fe3eea0a8f92cc4662c718c Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 23 Sep 2023 12:45:55 +0200
Subject: [PATCH 121/250] Try explicitly installing and using sphinx-rtd-theme
 (#1044)

---
 docs/conf.py          | 2 +-
 docs/requirements.txt | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/conf.py b/docs/conf.py
index 22f960575..a6e8a79d9 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -49,4 +49,4 @@
 
 # The theme to use for HTML and HTML Help pages. See the documentation for
 # a list of built-in themes.
-html_theme = "default"
+html_theme = "sphinx_rtd_theme"
diff --git a/docs/requirements.txt b/docs/requirements.txt
index d99b8c473..a63c6a7ca 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,3 @@
 Sphinx==6.1.2
 sphinxcontrib-jquery==4.1
+sphinx-rtd-theme==1.3.0

From 97b887ac723d748cbdfe5597971cfd75b520911d Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 30 Sep 2023 18:40:04 +0200
Subject: [PATCH 122/250] Simplify _EmptyMmap.madvise signature

---
 chess/polyglot.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/polyglot.py b/chess/polyglot.py
index ac339902c..cdf9b0c2f 100644
--- a/chess/polyglot.py
+++ b/chess/polyglot.py
@@ -312,7 +312,7 @@ def size(self) -> int:
     def close(self) -> None:
         pass
 
-    def madvise(self, option: int, start: int = ..., length: int = ...) -> None:
+    def madvise(self, option: int) -> None:
         pass
 
 

From 2093a7348edf709d1128ad3aed4707c22e6ee739 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 30 Sep 2023 18:49:47 +0200
Subject: [PATCH 123/250] Fix local chess.engine.InfoDict in type hint

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 9a7a0aa8a..b1d3896ab 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2597,7 +2597,7 @@ class AnalysisResult:
     Automatically stops the analysis when used as a context manager.
     """
 
-    multipv: List[chess.engine.InfoDict]
+    multipv: List[InfoDict]
     """
     A list of dictionaries with aggregated information sent by the engine.
     One item for each root move.

From 6f4d35a0bb0f88cbe9f1fccb46a4babc22d098cf Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 30 Sep 2023 19:29:50 +0200
Subject: [PATCH 124/250] Remove some unused loop variables

---
 chess/gaviota.py | 12 ++++++------
 chess/syzygy.py  |  2 +-
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index c2439728f..15371eb19 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -147,7 +147,7 @@ def init_pp48_idx() -> Tuple[List[List[int]], List[int], List[int]]:
     MAX_I = 48
     MAX_J = 48
     idx = 0
-    pp48_idx = [[-1] * MAX_J for i in range(MAX_I)]
+    pp48_idx = [[-1] * MAX_J for _ in range(MAX_I)]
     pp48_sq_x = [NOSQUARE] * MAX_PP48_INDEX
     pp48_sq_y = [NOSQUARE] * MAX_PP48_INDEX
 
@@ -173,7 +173,7 @@ def init_ppp48_idx() -> Tuple[List[List[List[int]]], List[int], List[int], List[
     MAX_I = 48
     MAX_J = 48
     MAX_K = 48
-    ppp48_idx = [[[-1] * MAX_I for j in range(MAX_J)] for k in range(MAX_K)]
+    ppp48_idx = [[[-1] * MAX_I for _ in range(MAX_J)] for _ in range(MAX_K)]
     ppp48_sq_x = [NOSQUARE] * MAX_PPP48_INDEX
     ppp48_sq_y = [NOSQUARE] * MAX_PPP48_INDEX
     ppp48_sq_z = [NOSQUARE] * MAX_PPP48_INDEX
@@ -210,7 +210,7 @@ def init_ppp48_idx() -> Tuple[List[List[List[int]]], List[int], List[int], List[
 
 
 def init_aaidx() -> Tuple[List[int], List[List[int]]]:
-    aaidx = [[-1] * 64 for y in range(64)]
+    aaidx = [[-1] * 64 for _ in range(64)]
     aabase = [0] * MAX_AAINDEX
 
     idx = 0
@@ -240,7 +240,7 @@ def init_aaa() -> Tuple[List[int], List[List[int]]]:
         aaa_base[a + 1] = accum
 
     # Get aaa_xyz.
-    aaa_xyz = [[-1] * 3 for idx in range(MAX_AAAINDEX)]
+    aaa_xyz = [[-1] * 3 for _ in range(MAX_AAAINDEX)]
 
     idx = 0
     for z in range(64):
@@ -319,7 +319,7 @@ def wsq_to_pidx48(pawn: int) -> int:
     return idx48
 
 def init_ppidx() -> Tuple[List[List[int]], List[int], List[int]]:
-    ppidx = [[-1] * 48 for i in range(24)]
+    ppidx = [[-1] * 48 for _ in range(24)]
     pp_hi24 = [-1] * MAX_PPINDEX
     pp_lo48 = [-1] * MAX_PPINDEX
 
@@ -379,7 +379,7 @@ def norm_kkindex(x: chess.Square, y: chess.Square) -> Tuple[int, int]:
     return x, y
 
 def init_kkidx() -> Tuple[List[List[int]], List[int], List[int]]:
-    kkidx = [[-1] * 64 for x in range(64)]
+    kkidx = [[-1] * 64 for _ in range(64)]
     bksq = [-1] * MAX_KKINDEX
     wksq = [-1] * MAX_KKINDEX
     idx = 0
diff --git a/chess/syzygy.py b/chess/syzygy.py
index 96a17e921..8953b8e6b 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -1257,7 +1257,7 @@ def init_table_dtz(self) -> None:
             self.norm = [0 for _ in range(self.num)]
             self.tb_size = [0, 0, 0, 0]
             self.size = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
-            self.files = [PawnFileDataDtz() for f in range(4)]
+            self.files = [PawnFileDataDtz() for _ in range(4)]
 
             files = 4 if self.data[4] & 0x02 else 1
 

From 15e3584ff65c46c6b1cecaf14b6fc25868587a93 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 30 Sep 2023 19:44:41 +0200
Subject: [PATCH 125/250] Provide type hints for empty lists

---
 chess/__init__.py | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 65719fd5c..a9328a04b 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -412,8 +412,8 @@ def _carry_rippler(mask: Bitboard) -> Iterator[Bitboard]:
             break
 
 def _attack_table(deltas: List[int]) -> Tuple[List[Bitboard], List[Dict[Bitboard, Bitboard]]]:
-    mask_table = []
-    attack_table = []
+    mask_table: List[Bitboard] = []
+    attack_table: List[Dict[Bitboard, Bitboard]] = []
 
     for square in SQUARES:
         attacks = {}
@@ -433,9 +433,9 @@ def _attack_table(deltas: List[int]) -> Tuple[List[Bitboard], List[Dict[Bitboard
 
 
 def _rays() -> List[List[Bitboard]]:
-    rays = []
+    rays: List[List[Bitboard]] = []
     for a, bb_a in enumerate(BB_SQUARES):
-        rays_row = []
+        rays_row: List[Bitboard] = []
         for b, bb_b in enumerate(BB_SQUARES):
             if BB_DIAG_ATTACKS[a][0] & bb_b:
                 rays_row.append((BB_DIAG_ATTACKS[a][0] & BB_DIAG_ATTACKS[b][0]) | bb_a | bb_b)
@@ -961,7 +961,7 @@ def board_fen(self, *, promoted: Optional[bool] = False) -> str:
         Gets the board FEN (e.g.,
         ``rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR``).
         """
-        builder = []
+        builder: List[str] = []
         empty = 0
 
         for square in SQUARES_180:
@@ -1056,7 +1056,7 @@ def piece_map(self, *, mask: Bitboard = BB_ALL) -> Dict[Square, Piece]:
         """
         Gets a dictionary of :class:`pieces <chess.Piece>` by square index.
         """
-        result = {}
+        result: Dict[Square, Piece] = {}
         for square in scan_reversed(self.occupied & mask):
             result[square] = typing.cast(Piece, self.piece_at(square))
         return result
@@ -1225,7 +1225,7 @@ def __repr__(self) -> str:
         return f"{type(self).__name__}({self.board_fen()!r})"
 
     def __str__(self) -> str:
-        builder = []
+        builder: List[str] = []
 
         for square in SQUARES_180:
             piece = self.piece_at(square)
@@ -1251,7 +1251,7 @@ def unicode(self, *, invert_color: bool = False, borders: bool = False, empty_sq
         :param invert_color: Invert color of the Unicode pieces.
         :param borders: Show borders and a coordinate margin.
         """
-        builder = []
+        builder: List[str] = []
         for rank_index in (range(7, -1, -1) if orientation else range(8)):
             if borders:
                 builder.append("  ")
@@ -2094,7 +2094,7 @@ def can_claim_threefold_repetition(self) -> bool:
         transpositions.update((transposition_key, ))
 
         # Count positions.
-        switchyard = []
+        switchyard: List[Move] = []
         while self.move_stack:
             move = self.pop()
             switchyard.append(move)
@@ -2147,7 +2147,7 @@ def is_repetition(self, count: int = 3) -> bool:
 
         # Check full replay.
         transposition_key = self._transposition_key()
-        switchyard = []
+        switchyard: List[Move] = []
 
         try:
             while True:
@@ -2343,7 +2343,7 @@ def castling_shredder_fen(self) -> str:
         if not castling_rights:
             return "-"
 
-        builder = []
+        builder: List[str] = []
 
         for square in scan_reversed(castling_rights & BB_RANK_1):
             builder.append(FILE_NAMES[square_file(square)].upper())
@@ -2354,7 +2354,7 @@ def castling_shredder_fen(self) -> str:
         return "".join(builder)
 
     def castling_xfen(self) -> str:
-        builder = []
+        builder: List[str] = []
 
         for color in COLORS:
             king = self.king(color)
@@ -2615,7 +2615,7 @@ def chess960_pos(self, *, ignore_turn: bool = False, ignore_castling: bool = Fal
         return super().chess960_pos()
 
     def _epd_operations(self, operations: Mapping[str, Union[None, str, int, float, Move, Iterable[Move]]]) -> str:
-        epd = []
+        epd: List[str] = []
         first_op = True
 
         for opcode, operand in operations.items():
@@ -2786,7 +2786,7 @@ def _parse_epd_ops(self: BoardT, operation_part: str, make_board: Callable[[], B
 
                     if opcode == "pv":
                         # A variation.
-                        variation = []
+                        variation: List[Move] = []
                         for token in operand.split():
                             move = position.parse_xboard(token)
                             variation.append(move)
@@ -2963,7 +2963,7 @@ def variation_san(self, variation: Iterable[Move]) -> str:
         :raises: :exc:`IllegalMoveError` if any moves in the sequence are illegal.
         """
         board = self.copy(stack=False)
-        san = []
+        san: List[str] = []
 
         for move in variation:
             if not board.is_legal(move):
@@ -3781,7 +3781,7 @@ def __contains__(self, move: Move) -> bool:
         return self.board.is_pseudo_legal(move)
 
     def __repr__(self) -> str:
-        builder = []
+        builder: List[str] = []
 
         for move in self:
             if self.board.is_legal(move):
@@ -3898,7 +3898,7 @@ class SquareSet:
 
     def __init__(self, squares: IntoSquareSet = BB_EMPTY) -> None:
         try:
-            self.mask = squares.__int__() & BB_ALL  # type: ignore
+            self.mask: Bitboard = squares.__int__() & BB_ALL  # type: ignore
             return
         except AttributeError:
             self.mask = 0
@@ -4095,7 +4095,7 @@ def __repr__(self) -> str:
         return f"SquareSet({self.mask:#021_x})"
 
     def __str__(self) -> str:
-        builder = []
+        builder: List[str] = []
 
         for square in SQUARES_180:
             mask = BB_SQUARES[square]

From e57312294bdce09d08714e83f74e274b94f18597 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 1 Oct 2023 22:04:14 +0200
Subject: [PATCH 126/250] Bump actions/checkout to v4

---
 .github/workflows/codeql.yml | 2 +-
 .github/workflows/test.yml   | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index a37e82933..cd5d5a2d8 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -11,7 +11,7 @@ jobs:
       contents: read
       security-events: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: github/codeql-action/init@v2
         with:
           languages: python
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 184092752..637880b51 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
@@ -21,7 +21,7 @@ jobs:
   perft:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: "3.11"
@@ -42,7 +42,7 @@ jobs:
         python-version: ["3.9", "3.10", "3.11"]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
@@ -53,7 +53,7 @@ jobs:
   readme:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: "3.11"

From 86f5f55846caaec1c22bc40a2b53d42b06916617 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 1 Oct 2023 22:10:32 +0200
Subject: [PATCH 127/250] Fix map_idx type

---
 chess/syzygy.py | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/chess/syzygy.py b/chess/syzygy.py
index 8953b8e6b..6a0efdef5 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -12,7 +12,7 @@
 import chess
 
 from types import TracebackType
-from typing import Deque, Dict, Iterable, Iterator, List, Optional, Tuple, Type, TypeVar, Union
+from typing import Deque, Dict, Iterable, Iterator, List, Optional, Set, Tuple, Type, TypeVar, Union
 
 
 UINT64_BE = struct.Struct(">Q")
@@ -368,7 +368,7 @@ def is_tablename(name: str, *, one_king: bool = True, piece_count: Optional[int]
 def tablenames(*, one_king: bool = True, piece_count: int = 6) -> Iterator[str]:
     first = "K" if one_king else "P"
 
-    targets = []
+    targets: List[str] = []
 
     white_pieces = piece_count - 2
     black_pieces = 0
@@ -411,7 +411,7 @@ def _dependencies(target: str, *, one_king: bool = True) -> Iterator[str]:
 
 
 def dependencies(target: str, *, one_king: bool = True) -> Iterator[str]:
-    closed = set()
+    closed: Set[str] = set()
     if one_king:
         closed.add("KvK")
 
@@ -422,7 +422,7 @@ def dependencies(target: str, *, one_king: bool = True) -> Iterator[str]:
 
 
 def all_dependencies(targets: Iterable[str], *, one_king: bool = True) -> Iterator[str]:
-    closed = set()
+    closed: Set[str] = set()
     if one_king:
         closed.add("KvK")
 
@@ -684,10 +684,7 @@ def set_norm_piece(self, norm: List[int], pieces: List[int]) -> None:
             i += norm[i]
 
     def calc_factors_piece(self, factor: List[int], order: int, norm: List[int]) -> int:
-        if not self.variant.connected_kings:
-            PIVFAC = [31332, 28056, 462]
-        else:
-            PIVFAC = [31332, 0, 518, 278]
+        PIVFAC = [31332, 0, 518, 278] if self.variant.connected_kings else [31332, 28056, 462]
 
         n = 64 - norm[0]
 
@@ -1310,7 +1307,7 @@ def init_table_dtz(self) -> None:
                     p_data = self._next
                     self.flags.append(self._flags)
 
-                self.map_idx = []
+                self.map_idx: List[List[int]] = []
                 self.p_map = p_data
                 for f in range(files):
                     self.map_idx.append([])

From 1dd3e1e11e637113f42ad29ace841876029d7a81 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 1 Oct 2023 22:19:54 +0200
Subject: [PATCH 128/250] Make also mypy happy

---
 chess/svg.py    | 2 +-
 chess/syzygy.py | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/chess/svg.py b/chess/svg.py
index 3e034ce30..d3d19e89e 100644
--- a/chess/svg.py
+++ b/chess/svg.py
@@ -434,7 +434,7 @@ def board(board: Optional[chess.BaseBoard] = None, *,
                 })
 
         # Render selected squares.
-        if squares is not None and square in squares:
+        if square in squares:
             ET.SubElement(svg, "use", _attrs({
                 "href": "#xx",
                 "xlink:href": "#xx",
diff --git a/chess/syzygy.py b/chess/syzygy.py
index 6a0efdef5..e1fe07eb7 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -1261,7 +1261,7 @@ def init_table_dtz(self) -> None:
             p_data = 5
 
             if not self.has_pawns:
-                self.map_idx = [[0, 0, 0, 0]]
+                self.map_idx: List[List[int]] = [[0, 0, 0, 0]]
 
                 self.setup_pieces_piece_dtz(p_data, 0)
                 p_data += self.num + 1
@@ -1307,7 +1307,7 @@ def init_table_dtz(self) -> None:
                     p_data = self._next
                     self.flags.append(self._flags)
 
-                self.map_idx: List[List[int]] = []
+                self.map_idx = []
                 self.p_map = p_data
                 for f in range(files):
                     self.map_idx.append([])

From 3a99f1bfc76185c81632b00c5a700b3b2a62fd4b Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 8 Oct 2023 17:39:43 +0200
Subject: [PATCH 129/250] Declare chess.popcount in pyright compatible way

---
 chess/__init__.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index a9328a04b..49ec73d9c 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -297,8 +297,12 @@ def scan_reversed(bb: Bitboard) -> Iterator[Square]:
         yield r
         bb ^= BB_SQUARES[r]
 
-# Python 3.10 or fallback.
-popcount: Callable[[Bitboard], int] = getattr(int, "bit_count", lambda bb: bin(bb).count("1"))
+try:
+    # Python 3.10
+    popcount = Bitboard.bit_count
+except AttributeError:
+    def popcount(self: Bitboard) -> int:
+        return bin(self).count("1")
 
 def flip_vertical(bb: Bitboard) -> Bitboard:
     # https://www.chessprogramming.org/Flipping_Mirroring_and_Rotating#FlipVertically

From 99eeeae4d2eed95939f6c52eae9d3418fd1c8a8e Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 8 Oct 2023 19:08:01 +0200
Subject: [PATCH 130/250] Revert "Declare chess.popcount in pyright compatible
 way"

This reverts commit 3a99f1bfc76185c81632b00c5a700b3b2a62fd4b.
---
 chess/__init__.py | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 49ec73d9c..a9328a04b 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -297,12 +297,8 @@ def scan_reversed(bb: Bitboard) -> Iterator[Square]:
         yield r
         bb ^= BB_SQUARES[r]
 
-try:
-    # Python 3.10
-    popcount = Bitboard.bit_count
-except AttributeError:
-    def popcount(self: Bitboard) -> int:
-        return bin(self).count("1")
+# Python 3.10 or fallback.
+popcount: Callable[[Bitboard], int] = getattr(int, "bit_count", lambda bb: bin(bb).count("1"))
 
 def flip_vertical(bb: Bitboard) -> Bitboard:
     # https://www.chessprogramming.org/Flipping_Mirroring_and_Rotating#FlipVertically

From 4a6dd9a89b7810312ab4ea1cf255d1a501ae09ca Mon Sep 17 00:00:00 2001
From: Rahul Saini <137695929+ProgramR4732@users.noreply.github.com>
Date: Fri, 13 Oct 2023 21:24:56 +0530
Subject: [PATCH 131/250] Removed unnecessary indentation blocks and updated
 conditional statements.

---
 release.py | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/release.py b/release.py
index d27ddf04e..f2f7d81fa 100755
--- a/release.py
+++ b/release.py
@@ -10,7 +10,7 @@
 def system(command):
     print(command)
     exit_code = os.system(command)
-    if exit_code != 0:
+    if exit_code:
         sys.exit(exit_code)
 
 
@@ -21,7 +21,7 @@ def check_git():
 
     system("git fetch origin")
     behind = int(subprocess.check_output(["git", "rev-list", "--count", "master..origin/master"]))
-    if behind > 0:
+    if behind:
         print(f"master is {behind} commit(s) behind origin/master")
         sys.exit(1)
 
@@ -65,15 +65,14 @@ def tag_and_push():
             release_txt.write(headline + os.linesep)
 
             for line in changelog_file:
-                if not first_section:
-                    if line.startswith("-------"):
-                        first_section = True
+                if line.startswith("-------") and not first_section:
+                    first_section = True
                 else:
                     if line.startswith("-------"):
                         break
-                    else:
-                        if not prev_line.startswith("------"):
-                            release_txt.write(prev_line)
+
+                    if not prev_line.startswith("------"):
+                        release_txt.write(prev_line)
 
                 prev_line = line
 

From 615a21b4ca7679c51388159324f2a9545868f6f1 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 15 Oct 2023 19:02:54 +0200
Subject: [PATCH 132/250] Link chess-playground

---
 README.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.rst b/README.rst
index ee3b315e7..07e0e3251 100644
--- a/README.rst
+++ b/README.rst
@@ -350,6 +350,7 @@ If you like, share interesting things you are using python-chess for, for exampl
 * Django Rest Framework API for multiplayer chess – https://github.com/WorkShoft/capablanca-api
 * a `browser based PGN viewer <https://about.nmstoker.com/chess2.html>`_ written in PyScript – https://github.com/nmstoker/ChessMatchViewer
 * an accessible chessboard that allows blind and visually impaired  players  to play chess against Stockfish – https://github.com/blindpandas/chessmart
+* analyse games to extract various statistics – https://github.com/mvrozanti/chess-playground
 
 
 Prior art

From 2b754a25854b41c68a847c5c36439f2eb1cdffb2 Mon Sep 17 00:00:00 2001
From: anonymousdouble <112695649+anonymousdouble@users.noreply.github.com>
Date: Mon, 1 Jan 2024 21:15:29 +1100
Subject: [PATCH 133/250] Update gaviota.py

refactor with chain constant value assignment to make code more Pythonic, concise and efficient.
---
 chess/gaviota.py | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index 15371eb19..39173b593 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -144,8 +144,7 @@ def init_flipt() -> List[List[int]]:
 
 
 def init_pp48_idx() -> Tuple[List[List[int]], List[int], List[int]]:
-    MAX_I = 48
-    MAX_J = 48
+    MAX_I = MAX_J = 48
     idx = 0
     pp48_idx = [[-1] * MAX_J for _ in range(MAX_I)]
     pp48_sq_x = [NOSQUARE] * MAX_PP48_INDEX
@@ -170,9 +169,7 @@ def init_pp48_idx() -> Tuple[List[List[int]], List[int], List[int]]:
 
 
 def init_ppp48_idx() -> Tuple[List[List[List[int]]], List[int], List[int], List[int]]:
-    MAX_I = 48
-    MAX_J = 48
-    MAX_K = 48
+    MAX_I = MAX_J = MAX_K = 48
     ppp48_idx = [[[-1] * MAX_I for _ in range(MAX_J)] for _ in range(MAX_K)]
     ppp48_sq_x = [NOSQUARE] * MAX_PPP48_INDEX
     ppp48_sq_y = [NOSQUARE] * MAX_PPP48_INDEX

From a64f78eb42b48a7a1f79a4fb2134c649d4dea4c2 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 1 Jan 2024 12:07:17 +0100
Subject: [PATCH 134/250] Try to test with Ubuntu engine packages in CI

---
 .github/workflows/setup-ubuntu-latest.sh | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/setup-ubuntu-latest.sh b/.github/workflows/setup-ubuntu-latest.sh
index 8954c8f0c..fae35b61a 100755
--- a/.github/workflows/setup-ubuntu-latest.sh
+++ b/.github/workflows/setup-ubuntu-latest.sh
@@ -1,19 +1,10 @@
 #!/bin/sh -e
 
 # Stockfish
-wget https://files.stockfishchess.org/archive/Stockfish%2011/stockfish-11-linux.zip
-unzip stockfish-11-linux.zip
-mkdir -p bin
-cp stockfish-11-linux/Linux/stockfish_20011801_x64_bmi2 bin/stockfish
-chmod +x bin/stockfish
-echo "`pwd`/bin" >> $GITHUB_PATH
+sudo apt-get install -y stockfish
 
 # Crafty
-git clone https://github.com/lazydroid/crafty-chess --depth 1
-cd crafty-chess
-make unix-gcc
-pwd >> $GITHUB_PATH
-cd ..
+sudo apt-get install -y crafty
 
 # Gaviota libgtb
 git clone https://github.com/michiguel/Gaviota-Tablebases.git --depth 1

From 0082833d30ac98cae1b272e220f56e0797f1187c Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 1 Jan 2024 12:17:41 +0100
Subject: [PATCH 135/250] Try to download Stockfish release in Windows CI

---
 .github/workflows/setup-windows-latest.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/setup-windows-latest.sh b/.github/workflows/setup-windows-latest.sh
index 685ead65a..f92bd9059 100755
--- a/.github/workflows/setup-windows-latest.sh
+++ b/.github/workflows/setup-windows-latest.sh
@@ -2,11 +2,11 @@
 
 echo Download ...
 choco install wget
-wget https://files.stockfishchess.org/archive/Stockfish%2011/stockfish-11-win.zip
+wget https://github.com/official-stockfish/Stockfish/releases/download/sf_16/stockfish-windows-x86-64-avx2.zip
 
 echo Unzip ..
-7z e stockfish-11-win.zip stockfish-11-win/Windows/*.exe
+7z e stockfish-windows-x86-64-avx2.zip /stockfish/stockfish-windows-x86-64-avx2.exe
 
 echo Setup path ...
-mv stockfish_20011801_x64_bmi2.exe stockfish.exe
+mv stockfish-windows-x86-64-avx2.exe stockfish.exe
 pwd >> $GITHUB_PATH

From 8a70a2c90f228826f34f9bf2629de86e750ab796 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 1 Jan 2024 12:21:40 +0100
Subject: [PATCH 136/250] Try to fix Stockfish zip extract

---
 .github/workflows/setup-windows-latest.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/setup-windows-latest.sh b/.github/workflows/setup-windows-latest.sh
index f92bd9059..815eb0db2 100755
--- a/.github/workflows/setup-windows-latest.sh
+++ b/.github/workflows/setup-windows-latest.sh
@@ -5,7 +5,7 @@ choco install wget
 wget https://github.com/official-stockfish/Stockfish/releases/download/sf_16/stockfish-windows-x86-64-avx2.zip
 
 echo Unzip ..
-7z e stockfish-windows-x86-64-avx2.zip /stockfish/stockfish-windows-x86-64-avx2.exe
+7z e stockfish-windows-x86-64-avx2.zip stockfish/stockfish-windows-x86-64-avx2.exe
 
 echo Setup path ...
 mv stockfish-windows-x86-64-avx2.exe stockfish.exe

From 2477ae8f4f36ce4ff872383a47ec2cf2e2eb6cf7 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 1 Jan 2024 12:28:48 +0100
Subject: [PATCH 137/250] Fix typing involving PathLike

---
 chess/polyglot.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/chess/polyglot.py b/chess/polyglot.py
index cdf9b0c2f..bf4fa0cd1 100644
--- a/chess/polyglot.py
+++ b/chess/polyglot.py
@@ -11,7 +11,7 @@
 from typing import Callable, Container, Iterator, List, NamedTuple, Optional, Type, Union
 
 
-PathLike = Union[str, bytes, os.PathLike]
+StrOrBytesPath = Union[str, bytes, os.PathLike[str], os.PathLike[bytes]]
 
 
 ENTRY_STRUCT = struct.Struct(">QHHI")
@@ -323,7 +323,7 @@ def _randint(rng: Optional[random.Random], a: int, b: int) -> int:
 class MemoryMappedReader:
     """Maps a Polyglot opening book to memory."""
 
-    def __init__(self, filename: PathLike) -> None:
+    def __init__(self, filename: StrOrBytesPath) -> None:
         fd = os.open(filename, os.O_RDONLY | os.O_BINARY if hasattr(os, "O_BINARY") else os.O_RDONLY)
         try:
             self.mmap: Union[mmap.mmap, _EmptyMmap] = mmap.mmap(fd, 0, access=mmap.ACCESS_READ)
@@ -500,7 +500,7 @@ def close(self) -> None:
         self.mmap.close()
 
 
-def open_reader(path: PathLike) -> MemoryMappedReader:
+def open_reader(path: StrOrBytesPath) -> MemoryMappedReader:
     """
     Creates a reader for the file at the given path.
 

From 62148665fd966c6047e2560bc289763ddca556af Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 1 Jan 2024 12:33:05 +0100
Subject: [PATCH 138/250] Test also with Python 3.12

---
 .github/workflows/test.yml | 8 ++++----
 setup.py                   | 1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 637880b51..576d8b491 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.11"
+          python-version: "3.12"
       - run: pip install -e .
       - run: python examples/perft/perft.py -t 1 examples/perft/random.perft --max-nodes 10000
       - run: python examples/perft/perft.py -t 1 examples/perft/chess960.perft --max-nodes 100000
@@ -39,7 +39,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -56,7 +56,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.11"
+          python-version: "3.12"
       - run: sudo apt-get update && sudo apt-get install -y docutils-common
       - run: python setup.py --long-description | rst2html --strict --no-raw > /dev/null
       - run: pip install -e .
diff --git a/setup.py b/setup.py
index 8c397e456..b825adb44 100755
--- a/setup.py
+++ b/setup.py
@@ -82,6 +82,7 @@ def read_description():
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Topic :: Games/Entertainment :: Board Games",
         "Topic :: Games/Entertainment :: Turn Based Strategy",
         "Topic :: Software Development :: Libraries :: Python Modules",

From 0946d784bfead47bfba88ca185b2ed626fd31bbd Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 1 Jan 2024 12:34:51 +0100
Subject: [PATCH 139/250] Work around PathLike not subscriptable on Python 3.8

---
 chess/polyglot.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/polyglot.py b/chess/polyglot.py
index bf4fa0cd1..44a68caa5 100644
--- a/chess/polyglot.py
+++ b/chess/polyglot.py
@@ -11,7 +11,7 @@
 from typing import Callable, Container, Iterator, List, NamedTuple, Optional, Type, Union
 
 
-StrOrBytesPath = Union[str, bytes, os.PathLike[str], os.PathLike[bytes]]
+StrOrBytesPath = Union[str, bytes, "os.PathLike[str]", "os.PathLike[bytes]"]
 
 
 ENTRY_STRUCT = struct.Struct(">QHHI")

From c5c388292c7986405ebbe4813b1691299bf3e900 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 1 Jan 2024 12:37:49 +0100
Subject: [PATCH 140/250] Bump version requirement and copyright year

---
 README.rst   | 2 +-
 docs/conf.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.rst b/README.rst
index 07e0e3251..7a677a451 100644
--- a/README.rst
+++ b/README.rst
@@ -59,7 +59,7 @@ python-chess:
 Installing
 ----------
 
-Requires Python 3.7+. Download and install the latest release:
+Requires Python 3.8+. Download and install the latest release:
 
 ::
 
diff --git a/docs/conf.py b/docs/conf.py
index a6e8a79d9..98e926efa 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -34,7 +34,7 @@
 
 # General information about the project.
 project = "python-chess"
-copyright = "2014–2023, Niklas Fiekas"
+copyright = "2014–2024, Niklas Fiekas"
 
 # The version.
 version = chess.__version__

From cd7f5958289dd08156436a1f84b9ea03cb1f75a1 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 1 Jan 2024 14:48:01 +0100
Subject: [PATCH 141/250] Update to CodeQL 3

---
 .github/workflows/codeql.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index cd5d5a2d8..bc991c885 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -12,7 +12,7 @@ jobs:
       security-events: write
     steps:
       - uses: actions/checkout@v4
-      - uses: github/codeql-action/init@v2
+      - uses: github/codeql-action/init@v3
         with:
           languages: python
-      - uses: github/codeql-action/analyze@v2
+      - uses: github/codeql-action/analyze@v3

From 65f6d7d7a2229be1c6c9051182d299404b0186d5 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 21 Feb 2024 03:23:07 -0800
Subject: [PATCH 142/250] Add support for multiple comments per move

---
 chess/pgn.py | 108 +++++++++++++++++++++++++++++----------------------
 test.py      |  58 +++++++++++++--------------
 2 files changed, 91 insertions(+), 75 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 55eddbc29..65ef0e6d5 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -197,24 +197,24 @@ class GameNode(abc.ABC):
     variations: List[ChildNode]
     """A list of child nodes."""
 
-    comment: str
+    comments: list[str]
     """
-    A comment that goes behind the move leading to this node. Comments
+    Comments that go behind the move leading to this node. Comments
     that occur before any moves are assigned to the root node.
     """
 
-    starting_comment: str
+    starting_comments: list[str]
     nags: Set[int]
 
-    def __init__(self, *, comment: str = "") -> None:
+    def __init__(self, *, comment: Union[str, list[str]] = "") -> None:
         self.parent = None
         self.move = None
         self.variations = []
-        self.comment = comment
+        self.comment = comment if isinstance(comment, list) else [comment] if comment else []
 
         # Deprecated: These should be properties of ChildNode, but need to
         # remain here for backwards compatibility.
-        self.starting_comment = ""
+        self.starting_comment: list[str] = []
         self.nags = set()
 
     @abc.abstractmethod
@@ -386,7 +386,7 @@ def remove_variation(self, move: Union[int, chess.Move, GameNode]) -> None:
         """Removes a variation."""
         self.variations.remove(self.variation(move))
 
-    def add_variation(self, move: chess.Move, *, comment: str = "", starting_comment: str = "", nags: Iterable[int] = []) -> ChildNode:
+    def add_variation(self, move: chess.Move, *, comment: Union[str, list[str]] = "", starting_comment: Union[str, list[str]] = "", nags: Iterable[int] = []) -> ChildNode:
         """Creates a child node with the given attributes."""
         # Instanciate ChildNode only in this method.
         return ChildNode(self, move, comment=comment, starting_comment=starting_comment, nags=nags)
@@ -417,7 +417,7 @@ def mainline_moves(self) -> Mainline[chess.Move]:
         """Returns an iterable over the main moves after this node."""
         return Mainline(self, lambda node: node.move)
 
-    def add_line(self, moves: Iterable[chess.Move], *, comment: str = "", starting_comment: str = "", nags: Iterable[int] = []) -> GameNode:
+    def add_line(self, moves: Iterable[chess.Move], *, comment: Union[str, list[str]] = "", starting_comment: Union[str, list[str]] = "", nags: Iterable[int] = []) -> GameNode:
         """
         Creates a sequence of child nodes for the given list of moves.
         Adds *comment* and *nags* to the last node of the line and returns it.
@@ -431,9 +431,12 @@ def add_line(self, moves: Iterable[chess.Move], *, comment: str = "", starting_c
 
         # Merge comment and NAGs.
         if node.comment:
-            node.comment += " " + comment
+            if isinstance(comment, str):
+                node.comment.append(comment)
+            else:
+                node.comment.extend(comment)
         else:
-            node.comment = comment
+            node.comment = comment if isinstance(comment, list) else [comment] if comment else []
 
         node.nags.update(nags)
 
@@ -446,7 +449,7 @@ def eval(self) -> Optional[chess.engine.PovScore]:
 
         Complexity is `O(n)`.
         """
-        match = EVAL_REGEX.search(self.comment)
+        match = EVAL_REGEX.search(" ".join(self.comment))
         if not match:
             return None
 
@@ -472,7 +475,7 @@ def eval_depth(self) -> Optional[int]:
 
         Complexity is `O(1)`.
         """
-        match = EVAL_REGEX.search(self.comment)
+        match = EVAL_REGEX.search(" ".join(self.comment))
         return int(match.group("depth")) if match and match.group("depth") else None
 
     def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int] = None) -> None:
@@ -489,12 +492,16 @@ def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int]
             elif score.white().mate():
                 eval = f"[%eval #{score.white().mate()}{depth_suffix}]"
 
-        self.comment, found = EVAL_REGEX.subn(_condense_affix(eval), self.comment, count=1)
+        found = 0
+        for index in range(len(self.comment)):
+            self.comment[index], found = EVAL_REGEX.subn(_condense_affix(eval), self.comment[index], count=1)
+            if found:
+                break
+
+        self.comment = list(filter(None, self.comment))
 
         if not found and eval:
-            if self.comment and not self.comment.endswith(" "):
-                self.comment += " "
-            self.comment += eval
+            self.comment.append(eval)
 
     def arrows(self) -> List[chess.svg.Arrow]:
         """
@@ -504,7 +511,7 @@ def arrows(self) -> List[chess.svg.Arrow]:
         Returns a list of :class:`arrows <chess.svg.Arrow>`.
         """
         arrows = []
-        for match in ARROWS_REGEX.finditer(self.comment):
+        for match in ARROWS_REGEX.finditer(" ".join(self.comment)):
             for group in match.group("arrows").split(","):
                 arrows.append(chess.svg.Arrow.from_pgn(group))
 
@@ -526,7 +533,10 @@ def set_arrows(self, arrows: Iterable[Union[chess.svg.Arrow, Tuple[Square, Squar
                 pass
             (csl if arrow.tail == arrow.head else cal).append(arrow.pgn())  # type: ignore
 
-        self.comment = ARROWS_REGEX.sub(_condense_affix(""), self.comment)
+        for index in range(len(self.comment)):
+            self.comment[index] = ARROWS_REGEX.sub(_condense_affix(""), self.comment[index])
+
+        self.comment = list(filter(None, self.comment))
 
         prefix = ""
         if csl:
@@ -534,10 +544,8 @@ def set_arrows(self, arrows: Iterable[Union[chess.svg.Arrow, Tuple[Square, Squar
         if cal:
             prefix += f"[%cal {','.join(cal)}]"
 
-        if prefix and self.comment and not self.comment.startswith(" ") and not self.comment.startswith("\n"):
-            self.comment = prefix + " " + self.comment
-        else:
-            self.comment = prefix + self.comment
+        if prefix:
+            self.comment.insert(0, prefix)
 
     def clock(self) -> Optional[float]:
         """
@@ -547,7 +555,7 @@ def clock(self) -> Optional[float]:
         Returns the player's remaining time to the next time control after this
         move, in seconds.
         """
-        match = CLOCK_REGEX.search(self.comment)
+        match = CLOCK_REGEX.search(" ".join(self.comment))
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))
@@ -566,12 +574,16 @@ def set_clock(self, seconds: Optional[float]) -> None:
             seconds_part = f"{seconds:06.3f}".rstrip("0").rstrip(".")
             clk = f"[%clk {hours:d}:{minutes:02d}:{seconds_part}]"
 
-        self.comment, found = CLOCK_REGEX.subn(_condense_affix(clk), self.comment, count=1)
+        found = 0
+        for index in range(len(self.comment)):
+            self.comment[index], found = CLOCK_REGEX.subn(_condense_affix(clk), self.comment[index], count=1)
+            if found:
+                break
+
+        self.comment = list(filter(None, self.comment))
 
         if not found and clk:
-            if self.comment and not self.comment.endswith(" ") and not self.comment.endswith("\n"):
-                self.comment += " "
-            self.comment += clk
+            self.comment.append(clk)
 
     def emt(self) -> Optional[float]:
         """
@@ -581,7 +593,7 @@ def emt(self) -> Optional[float]:
         Returns the player's elapsed move time use for the comment of this
         move, in seconds.
         """
-        match = EMT_REGEX.search(self.comment)
+        match = EMT_REGEX.search(" ".join(self.comment))
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))
@@ -600,12 +612,16 @@ def set_emt(self, seconds: Optional[float]) -> None:
             seconds_part = f"{seconds:06.3f}".rstrip("0").rstrip(".")
             emt = f"[%emt {hours:d}:{minutes:02d}:{seconds_part}]"
 
-        self.comment, found = EMT_REGEX.subn(_condense_affix(emt), self.comment, count=1)
+        found = 0
+        for index in range(len(self.comment)):
+            self.comment[index], found = EMT_REGEX.subn(_condense_affix(emt), self.comment[index], count=1)
+            if found:
+                break
+
+        self.comment = list(filter(None, self.comment))
 
         if not found and emt:
-            if self.comment and not self.comment.endswith(" ") and not self.comment.endswith("\n"):
-                self.comment += " "
-            self.comment += emt
+            self.comment.append(emt)
 
     @abc.abstractmethod
     def accept(self, visitor: BaseVisitor[ResultT]) -> ResultT:
@@ -661,7 +677,7 @@ class ChildNode(GameNode):
     move: chess.Move
     """The move leading to this node."""
 
-    starting_comment: str
+    starting_comment: list[str]
     """
     A comment for the start of a variation. Only nodes that
     actually start a variation (:func:`~chess.pgn.GameNode.starts_variation()`
@@ -675,14 +691,14 @@ class ChildNode(GameNode):
     node of the game will never have NAGs.
     """
 
-    def __init__(self, parent: GameNode, move: chess.Move, *, comment: str = "", starting_comment: str = "", nags: Iterable[int] = []) -> None:
+    def __init__(self, parent: GameNode, move: chess.Move, *, comment: Union[str, list[str]] = "", starting_comment: Union[str, list[str]] = "", nags: Iterable[int] = []) -> None:
         super().__init__(comment=comment)
         self.parent = parent
         self.move = move
         self.parent.variations.append(self)
 
         self.nags.update(nags)
-        self.starting_comment = starting_comment
+        self.starting_comment = starting_comment if isinstance(starting_comment, list) else [starting_comment] if starting_comment else []
 
     def board(self) -> chess.Board:
         stack: List[chess.Move] = []
@@ -1134,7 +1150,7 @@ def visit_board(self, board: chess.Board) -> None:
         """
         pass
 
-    def visit_comment(self, comment: str) -> None:
+    def visit_comment(self, comment: list[str]) -> None:
         """Called for each comment."""
         pass
 
@@ -1188,7 +1204,7 @@ def begin_game(self) -> None:
         self.game: GameT = self.Game()
 
         self.variation_stack: List[GameNode] = [self.game]
-        self.starting_comment = ""
+        self.starting_comment: list[str] = []
         self.in_variation = False
 
     def begin_headers(self) -> Headers:
@@ -1213,22 +1229,22 @@ def visit_result(self, result: str) -> None:
         if self.game.headers.get("Result", "*") == "*":
             self.game.headers["Result"] = result
 
-    def visit_comment(self, comment: str) -> None:
+    def visit_comment(self, comment: list[str]) -> None:
         if self.in_variation or (self.variation_stack[-1].parent is None and self.variation_stack[-1].is_end()):
             # Add as a comment for the current node if in the middle of
             # a variation. Add as a comment for the game if the comment
             # starts before any move.
-            new_comment = [self.variation_stack[-1].comment, comment]
-            self.variation_stack[-1].comment = " ".join(filter(None, new_comment))
+            new_comment = self.variation_stack[-1].comment + comment
+            self.variation_stack[-1].comment = list(filter(None, new_comment))
         else:
             # Otherwise, it is a starting comment.
-            new_comment = [self.starting_comment, comment]
-            self.starting_comment = " ".join(filter(None, new_comment))
+            new_comment = self.starting_comment + comment
+            self.starting_comment = list(filter(None, new_comment))
 
     def visit_move(self, board: chess.Board, move: chess.Move) -> None:
         self.variation_stack[-1] = self.variation_stack[-1].add_variation(move)
         self.variation_stack[-1].starting_comment = self.starting_comment
-        self.starting_comment = ""
+        self.starting_comment = []
         self.in_variation = True
 
     def handle_error(self, error: Exception) -> None:
@@ -1396,9 +1412,9 @@ def end_variation(self) -> None:
             self.write_token(") ")
             self.force_movenumber = True
 
-    def visit_comment(self, comment: str) -> None:
+    def visit_comment(self, comment: list[str]) -> None:
         if self.comments and (self.variations or not self.variation_depth):
-            self.write_token("{ " + comment.replace("}", "").strip() + " } ")
+            self.write_token(" ".join("{ " + single_comment.replace("}", "").strip() + " }" for single_comment in comment) + " ")
             self.force_movenumber = True
 
     def visit_nag(self, nag: int) -> None:
@@ -1693,7 +1709,7 @@ def read_game(handle: TextIO, *, Visitor: Any = GameBuilder) -> Any:
                     line = line[close_index + 1:]
 
                 if not skip_variation_depth:
-                    visitor.visit_comment("".join(comment_lines))
+                    visitor.visit_comment(["".join(comment_lines)])
 
                 # Continue with the current line.
                 fresh_line = False
diff --git a/test.py b/test.py
index e1d0d50c5..d3961cc6b 100755
--- a/test.py
+++ b/test.py
@@ -2078,29 +2078,29 @@ class PgnTestCase(unittest.TestCase):
 
     def test_exporter(self):
         game = chess.pgn.Game()
-        game.comment = "Test game:"
+        game.comment = ["Test game:"]
         game.headers["Result"] = "*"
         game.headers["VeryLongHeader"] = "This is a very long header, much wider than the 80 columns that PGNs are formatted with by default"
 
         e4 = game.add_variation(game.board().parse_san("e4"))
-        e4.comment = "Scandinavian Defense:"
+        e4.comment = ["Scandinavian Defense:"]
 
         e4_d5 = e4.add_variation(e4.board().parse_san("d5"))
 
         e4_h5 = e4.add_variation(e4.board().parse_san("h5"))
         e4_h5.nags.add(chess.pgn.NAG_MISTAKE)
-        e4_h5.starting_comment = "This"
-        e4_h5.comment = "is nonsense"
+        e4_h5.starting_comment = ["This"]
+        e4_h5.comment = ["is nonsense"]
 
         e4_e5 = e4.add_variation(e4.board().parse_san("e5"))
         e4_e5_Qf3 = e4_e5.add_variation(e4_e5.board().parse_san("Qf3"))
         e4_e5_Qf3.nags.add(chess.pgn.NAG_MISTAKE)
 
         e4_c5 = e4.add_variation(e4.board().parse_san("c5"))
-        e4_c5.comment = "Sicilian"
+        e4_c5.comment = ["Sicilian"]
 
         e4_d5_exd5 = e4_d5.add_main_variation(e4_d5.board().parse_san("exd5"))
-        e4_d5_exd5.comment = "Best"
+        e4_d5_exd5.comment = ["Best"]
 
         # Test string exporter with various options.
         exporter = chess.pgn.StringExporter(headers=False, comments=False, variations=False)
@@ -2229,7 +2229,7 @@ def test_comment_at_eol(self):
 
         # Make sure the comment for the second variation is there.
         self.assertIn(5, node[1].nags)
-        self.assertEqual(node[1].comment, "\n/\\ Ne7, c6")
+        self.assertEqual(node[1].comment, ["\n/\\ Ne7, c6"])
 
     def test_promotion_without_equals(self):
         # Example game from https://github.com/rozim/ChessData as originally
@@ -2317,12 +2317,12 @@ def test_variation_stack(self):
     def test_game_starting_comment(self):
         pgn = io.StringIO("{ Game starting comment } 1. d3")
         game = chess.pgn.read_game(pgn)
-        self.assertEqual(game.comment, "Game starting comment")
+        self.assertEqual(game.comment, ["Game starting comment"])
         self.assertEqual(game[0].san(), "d3")
 
         pgn = io.StringIO("{ Empty game, but has a comment }")
         game = chess.pgn.read_game(pgn)
-        self.assertEqual(game.comment, "Empty game, but has a comment")
+        self.assertEqual(game.comment, ["Empty game, but has a comment"])
 
     def test_game_starting_variation(self):
         pgn = io.StringIO(textwrap.dedent("""\
@@ -2330,7 +2330,7 @@ def test_game_starting_variation(self):
             """))
 
         game = chess.pgn.read_game(pgn)
-        self.assertEqual(game.comment, "Start of game")
+        self.assertEqual(game.comment, ["Start of game"])
 
         node = game[0]
         self.assertEqual(node.move, chess.Move.from_uci("e2e4"))
@@ -2340,7 +2340,7 @@ def test_game_starting_variation(self):
         node = game[1]
         self.assertEqual(node.move, chess.Move.from_uci("d2d4"))
         self.assertFalse(node.comment)
-        self.assertEqual(node.starting_comment, "Start of variation")
+        self.assertEqual(node.starting_comment, ["Start of variation"])
 
     def test_annotation_symbols(self):
         pgn = io.StringIO("1. b4?! g6 2. Bb2 Nc6? 3. Bxh8!!")
@@ -2685,12 +2685,12 @@ def test_add_line(self):
         tail = game.add_line(moves, starting_comment="start", comment="end", nags=(17, 42))
 
         self.assertEqual(tail.parent.move, chess.Move.from_uci("g1f3"))
-        self.assertEqual(tail.parent.starting_comment, "start")
-        self.assertEqual(tail.parent.comment, "")
+        self.assertEqual(tail.parent.starting_comment, ["start"])
+        self.assertEqual(tail.parent.comment, [])
         self.assertEqual(len(tail.parent.nags), 0)
 
         self.assertEqual(tail.move, chess.Move.from_uci("d7d5"))
-        self.assertEqual(tail.comment, "end")
+        self.assertEqual(tail.comment, ["end"])
         self.assertIn(42, tail.nags)
 
     def test_mainline(self):
@@ -2820,27 +2820,27 @@ def test_recursion(self):
 
     def test_annotations(self):
         game = chess.pgn.Game()
-        game.comment = "foo [%bar] baz"
+        game.comment = ["foo [%bar] baz"]
 
         self.assertTrue(game.clock() is None)
         clock = 12345
         game.set_clock(clock)
-        self.assertEqual(game.comment, "foo [%bar] baz [%clk 3:25:45]")
+        self.assertEqual(game.comment, ["foo [%bar] baz", "[%clk 3:25:45]"])
         self.assertEqual(game.clock(), clock)
 
         self.assertTrue(game.eval() is None)
         game.set_eval(chess.engine.PovScore(chess.engine.Cp(-80), chess.WHITE))
-        self.assertEqual(game.comment, "foo [%bar] baz [%clk 3:25:45] [%eval -0.80]")
+        self.assertEqual(game.comment, ["foo [%bar] baz", "[%clk 3:25:45]", "[%eval -0.80]"])
         self.assertEqual(game.eval().white().score(), -80)
         self.assertEqual(game.eval_depth(), None)
         game.set_eval(chess.engine.PovScore(chess.engine.Mate(1), chess.WHITE), 5)
-        self.assertEqual(game.comment, "foo [%bar] baz [%clk 3:25:45] [%eval #1,5]")
+        self.assertEqual(game.comment, ["foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]"])
         self.assertEqual(game.eval().white().mate(), 1)
         self.assertEqual(game.eval_depth(), 5)
 
         self.assertEqual(game.arrows(), [])
         game.set_arrows([(chess.A1, chess.A1), chess.svg.Arrow(chess.A1, chess.H1, color="red"), chess.svg.Arrow(chess.B1, chess.B8)])
-        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45] [%eval #1,5]")
+        self.assertEqual(game.comment, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]"])
         arrows = game.arrows()
         self.assertEqual(len(arrows), 3)
         self.assertEqual(arrows[0].color, "green")
@@ -2850,18 +2850,18 @@ def test_annotations(self):
         self.assertTrue(game.emt() is None)
         emt = 321
         game.set_emt(emt)
-        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45] [%eval #1,5] [%emt 0:05:21]")
+        self.assertEqual(game.comment, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]", "[%emt 0:05:21]"])
         self.assertEqual(game.emt(), emt)
 
         game.set_eval(None)
-        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45] [%emt 0:05:21]")
+        self.assertEqual(game.comment, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%emt 0:05:21]"])
 
         game.set_emt(None)
-        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45]")
+        self.assertEqual(game.comment, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]"])
 
         game.set_clock(None)
         game.set_arrows([])
-        self.assertEqual(game.comment, "foo [%bar] baz")
+        self.assertEqual(game.comment, ["foo [%bar] baz"])
 
     def test_eval(self):
         game = chess.pgn.Game()
@@ -2871,28 +2871,28 @@ def test_eval(self):
 
     def test_float_emt(self):
         game = chess.pgn.Game()
-        game.comment = "[%emt 0:00:01.234]"
+        game.comment = ["[%emt 0:00:01.234]"]
         self.assertEqual(game.emt(), 1.234)
 
         game.set_emt(6.54321)
-        self.assertEqual(game.comment, "[%emt 0:00:06.543]")
+        self.assertEqual(game.comment, ["[%emt 0:00:06.543]"])
         self.assertEqual(game.emt(), 6.543)
 
         game.set_emt(-70)
-        self.assertEqual(game.comment, "[%emt 0:00:00]")  # Clamped
+        self.assertEqual(game.comment, ["[%emt 0:00:00]"])  # Clamped
         self.assertEqual(game.emt(), 0)
 
     def test_float_clk(self):
         game = chess.pgn.Game()
-        game.comment = "[%clk 0:00:01.234]"
+        game.comment = ["[%clk 0:00:01.234]"]
         self.assertEqual(game.clock(), 1.234)
 
         game.set_clock(6.54321)
-        self.assertEqual(game.comment, "[%clk 0:00:06.543]")
+        self.assertEqual(game.comment, ["[%clk 0:00:06.543]"])
         self.assertEqual(game.clock(), 6.543)
 
         game.set_clock(-70)
-        self.assertEqual(game.comment, "[%clk 0:00:00]")  # Clamped
+        self.assertEqual(game.comment, ["[%clk 0:00:00]"])  # Clamped
         self.assertEqual(game.clock(), 0)
 
     def test_node_turn(self):

From 2269d6a05e137dfe42043474fdaca58c2c6b84a3 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 21 Feb 2024 03:25:33 -0800
Subject: [PATCH 143/250] Add test for exporting a move with multiple comments

---
 test.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test.py b/test.py
index d3961cc6b..2008ef49d 100755
--- a/test.py
+++ b/test.py
@@ -2100,7 +2100,7 @@ def test_exporter(self):
         e4_c5.comment = ["Sicilian"]
 
         e4_d5_exd5 = e4_d5.add_main_variation(e4_d5.board().parse_san("exd5"))
-        e4_d5_exd5.comment = ["Best"]
+        e4_d5_exd5.comment = ["Best", "and the end of this example"]
 
         # Test string exporter with various options.
         exporter = chess.pgn.StringExporter(headers=False, comments=False, variations=False)
@@ -2125,7 +2125,7 @@ def test_exporter(self):
 
             { Test game: } 1. e4 { Scandinavian Defense: } 1... d5 ( { This } 1... h5 $2
             { is nonsense } ) ( 1... e5 2. Qf3 $2 ) ( 1... c5 { Sicilian } ) 2. exd5
-            { Best } *""")
+            { Best } { and the end of this example } *""")
         self.assertEqual(str(exporter), pgn)
 
         # Test file exporter.

From 05da5981c5494b1c87b214a0fd46dfc4b0f6ac5a Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 21 Feb 2024 03:48:21 -0800
Subject: [PATCH 144/250] Undo member renaming

---
 chess/pgn.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 65ef0e6d5..f13812bae 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -197,13 +197,13 @@ class GameNode(abc.ABC):
     variations: List[ChildNode]
     """A list of child nodes."""
 
-    comments: list[str]
+    comment: list[str]
     """
     Comments that go behind the move leading to this node. Comments
     that occur before any moves are assigned to the root node.
     """
 
-    starting_comments: list[str]
+    starting_comment: list[str]
     nags: Set[int]
 
     def __init__(self, *, comment: Union[str, list[str]] = "") -> None:

From c06030895cbcf49251279724bd19669c6f580349 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 21 Feb 2024 03:48:45 -0800
Subject: [PATCH 145/250] Add test for reading game with mulit-comment moves

---
 test.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test.py b/test.py
index 2008ef49d..c912948c4 100755
--- a/test.py
+++ b/test.py
@@ -2215,6 +2215,14 @@ def test_read_game(self):
         self.assertEqual(sixth_game.headers["White"], "Deep Blue (Computer)")
         self.assertEqual(sixth_game.headers["Result"], "1-0")
 
+    def test_read_game_with_multicomment_move(self):
+        pgn = io.StringIO("1. e4 {A common opening} 1... e5 {A common response} {An uncommon comment}")
+        game = chess.pgn.read_game(pgn)
+        first_move = game.variation(0)
+        self.assertEqual(first_move.comment, ["A common opening"])
+        second_move = first_move.variation(0)
+        self.assertEqual(second_move.comment, ["A common response", "An uncommon comment"])
+
     def test_comment_at_eol(self):
         pgn = io.StringIO(textwrap.dedent("""\
             1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Nbd2 a6 $6 (6... Bb6 $5 {

From 8d076cb77600d84f692e19f70abfdf9d04b93498 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 03:43:33 -0800
Subject: [PATCH 146/250] Undo comment change

---
 chess/pgn.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index f13812bae..513698dff 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -199,7 +199,7 @@ class GameNode(abc.ABC):
 
     comment: list[str]
     """
-    Comments that go behind the move leading to this node. Comments
+    A comment that goes behind the move leading to this node. Comments
     that occur before any moves are assigned to the root node.
     """
 

From 1df1b76fb064765b7e7510fbe6b35c1b27c3dde0 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 03:55:05 -0800
Subject: [PATCH 147/250] Create class to hold multiple comments

---
 chess/pgn.py | 116 ++++++++++++++++++++++++++++++++++++++++-----------
 test.py      |  18 ++++----
 2 files changed, 100 insertions(+), 34 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 513698dff..763b90f02 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -184,6 +184,70 @@ def __init__(self, node: ChildNode, *, is_variation: bool = False, sidelines: bo
         self.in_variation = False
 
 
+class GameNodeComment:
+    """
+    PGN Comment Storage
+
+    A class that can hold one or more comments for a GameNode.
+    """
+    def __init__(self, comment: Union[str, list[str]] = ""):
+        self.set(comment)
+
+    def set(self, new_comment: Union[str, list[str]]):
+        """Replace the comment with a new comment or a list of comments."""
+        self._comments = new_comment if isinstance(new_comment, list) else [new_comment] if new_comment else []
+
+    def pgn_format(self) -> str:
+        """Create a string representation of the comments in PGN format."""
+        comments = list(map(lambda s: s.replace("{", ""), self._comments))
+        comments = list(map(lambda s: s.replace("}", "").strip(), comments))
+        output_comments = GameNodeComment(comments)
+        output_comments.remove_empty()
+        return "{ " + output_comments.join(" } { ") + " }"
+
+    def remove_empty(self) -> None:
+        """Remove empty comments from the comment list."""
+        self._comments = list(filter(None, self._comments))
+
+    def append(self, new_comment: str) -> None:
+        """Append a new comment to the end of the comment list."""
+        self._comments.append(new_comment)
+
+    def extend(self, new_comments: list[str]) -> None:
+        """Append several new comments to the end of the comment list."""
+        self._comments.extend(new_comments)
+
+    def insert(self, index: int, new_comment: str) -> None:
+        """Insert a new comment before the specified index."""
+        self._comments.insert(index, new_comment)
+
+    def join(self, joiner: str) -> str:
+        """Join all of the comments together with a joiner string between each."""
+        return joiner.join(self._comments)
+
+    def __len__(self) -> int:
+        return len(self._comments)
+
+    def __getitem__(self, index: int) -> str:
+        return self._comments[index]
+
+    def __setitem__(self, index: int, new_comment: str) -> None:
+        self._comments[index] = new_comment
+
+    def __add__(self, other: GameNodeComment) -> GameNodeComment:
+        return GameNodeComment(self._comments + other._comments)
+
+    def __eq__(self, other: object) -> bool:
+        if isinstance(other, str):
+            return len(self) == 1 and self[0] == other
+        elif isinstance(other, list):
+            return self._comments == other
+        elif isinstance(other, GameNodeComment):
+            return self._comments == other._comments
+        else:
+            return False
+
+
 class GameNode(abc.ABC):
     parent: Optional[GameNode]
     """The parent node or ``None`` if this is the root node of the game."""
@@ -197,24 +261,24 @@ class GameNode(abc.ABC):
     variations: List[ChildNode]
     """A list of child nodes."""
 
-    comment: list[str]
+    comment: GameNodeComment
     """
     A comment that goes behind the move leading to this node. Comments
     that occur before any moves are assigned to the root node.
     """
 
-    starting_comment: list[str]
+    starting_comment: GameNodeComment
     nags: Set[int]
 
     def __init__(self, *, comment: Union[str, list[str]] = "") -> None:
         self.parent = None
         self.move = None
         self.variations = []
-        self.comment = comment if isinstance(comment, list) else [comment] if comment else []
+        self.comment = GameNodeComment(comment)
 
         # Deprecated: These should be properties of ChildNode, but need to
         # remain here for backwards compatibility.
-        self.starting_comment: list[str] = []
+        self.starting_comment = GameNodeComment()
         self.nags = set()
 
     @abc.abstractmethod
@@ -436,7 +500,7 @@ def add_line(self, moves: Iterable[chess.Move], *, comment: Union[str, list[str]
             else:
                 node.comment.extend(comment)
         else:
-            node.comment = comment if isinstance(comment, list) else [comment] if comment else []
+            node.comment.set(comment)
 
         node.nags.update(nags)
 
@@ -449,7 +513,7 @@ def eval(self) -> Optional[chess.engine.PovScore]:
 
         Complexity is `O(n)`.
         """
-        match = EVAL_REGEX.search(" ".join(self.comment))
+        match = EVAL_REGEX.search(self.comment.join(" "))
         if not match:
             return None
 
@@ -475,7 +539,7 @@ def eval_depth(self) -> Optional[int]:
 
         Complexity is `O(1)`.
         """
-        match = EVAL_REGEX.search(" ".join(self.comment))
+        match = EVAL_REGEX.search(self.comment.join(" "))
         return int(match.group("depth")) if match and match.group("depth") else None
 
     def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int] = None) -> None:
@@ -498,7 +562,7 @@ def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int]
             if found:
                 break
 
-        self.comment = list(filter(None, self.comment))
+        self.comment.remove_empty()
 
         if not found and eval:
             self.comment.append(eval)
@@ -511,7 +575,7 @@ def arrows(self) -> List[chess.svg.Arrow]:
         Returns a list of :class:`arrows <chess.svg.Arrow>`.
         """
         arrows = []
-        for match in ARROWS_REGEX.finditer(" ".join(self.comment)):
+        for match in ARROWS_REGEX.finditer(self.comment.join(" ")):
             for group in match.group("arrows").split(","):
                 arrows.append(chess.svg.Arrow.from_pgn(group))
 
@@ -536,7 +600,7 @@ def set_arrows(self, arrows: Iterable[Union[chess.svg.Arrow, Tuple[Square, Squar
         for index in range(len(self.comment)):
             self.comment[index] = ARROWS_REGEX.sub(_condense_affix(""), self.comment[index])
 
-        self.comment = list(filter(None, self.comment))
+        self.comment.remove_empty()
 
         prefix = ""
         if csl:
@@ -555,7 +619,7 @@ def clock(self) -> Optional[float]:
         Returns the player's remaining time to the next time control after this
         move, in seconds.
         """
-        match = CLOCK_REGEX.search(" ".join(self.comment))
+        match = CLOCK_REGEX.search(self.comment.join(" "))
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))
@@ -580,7 +644,7 @@ def set_clock(self, seconds: Optional[float]) -> None:
             if found:
                 break
 
-        self.comment = list(filter(None, self.comment))
+        self.comment.remove_empty()
 
         if not found and clk:
             self.comment.append(clk)
@@ -593,7 +657,7 @@ def emt(self) -> Optional[float]:
         Returns the player's elapsed move time use for the comment of this
         move, in seconds.
         """
-        match = EMT_REGEX.search(" ".join(self.comment))
+        match = EMT_REGEX.search(self.comment.join(" "))
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))
@@ -618,7 +682,7 @@ def set_emt(self, seconds: Optional[float]) -> None:
             if found:
                 break
 
-        self.comment = list(filter(None, self.comment))
+        self.comment.remove_empty()
 
         if not found and emt:
             self.comment.append(emt)
@@ -677,7 +741,7 @@ class ChildNode(GameNode):
     move: chess.Move
     """The move leading to this node."""
 
-    starting_comment: list[str]
+    starting_comment: GameNodeComment
     """
     A comment for the start of a variation. Only nodes that
     actually start a variation (:func:`~chess.pgn.GameNode.starts_variation()`
@@ -698,7 +762,7 @@ def __init__(self, parent: GameNode, move: chess.Move, *, comment: Union[str, li
         self.parent.variations.append(self)
 
         self.nags.update(nags)
-        self.starting_comment = starting_comment if isinstance(starting_comment, list) else [starting_comment] if starting_comment else []
+        self.starting_comment = GameNodeComment(starting_comment)
 
     def board(self) -> chess.Board:
         stack: List[chess.Move] = []
@@ -1150,7 +1214,7 @@ def visit_board(self, board: chess.Board) -> None:
         """
         pass
 
-    def visit_comment(self, comment: list[str]) -> None:
+    def visit_comment(self, comment: GameNodeComment) -> None:
         """Called for each comment."""
         pass
 
@@ -1204,7 +1268,7 @@ def begin_game(self) -> None:
         self.game: GameT = self.Game()
 
         self.variation_stack: List[GameNode] = [self.game]
-        self.starting_comment: list[str] = []
+        self.starting_comment = GameNodeComment()
         self.in_variation = False
 
     def begin_headers(self) -> Headers:
@@ -1229,22 +1293,24 @@ def visit_result(self, result: str) -> None:
         if self.game.headers.get("Result", "*") == "*":
             self.game.headers["Result"] = result
 
-    def visit_comment(self, comment: list[str]) -> None:
+    def visit_comment(self, comment: GameNodeComment) -> None:
         if self.in_variation or (self.variation_stack[-1].parent is None and self.variation_stack[-1].is_end()):
             # Add as a comment for the current node if in the middle of
             # a variation. Add as a comment for the game if the comment
             # starts before any move.
             new_comment = self.variation_stack[-1].comment + comment
-            self.variation_stack[-1].comment = list(filter(None, new_comment))
+            new_comment.remove_empty()
+            self.variation_stack[-1].comment = new_comment
         else:
             # Otherwise, it is a starting comment.
             new_comment = self.starting_comment + comment
-            self.starting_comment = list(filter(None, new_comment))
+            new_comment.remove_empty()
+            self.starting_comment = new_comment
 
     def visit_move(self, board: chess.Board, move: chess.Move) -> None:
         self.variation_stack[-1] = self.variation_stack[-1].add_variation(move)
         self.variation_stack[-1].starting_comment = self.starting_comment
-        self.starting_comment = []
+        self.starting_comment = GameNodeComment()
         self.in_variation = True
 
     def handle_error(self, error: Exception) -> None:
@@ -1412,9 +1478,9 @@ def end_variation(self) -> None:
             self.write_token(") ")
             self.force_movenumber = True
 
-    def visit_comment(self, comment: list[str]) -> None:
+    def visit_comment(self, comment: GameNodeComment) -> None:
         if self.comments and (self.variations or not self.variation_depth):
-            self.write_token(" ".join("{ " + single_comment.replace("}", "").strip() + " }" for single_comment in comment) + " ")
+            self.write_token(comment.pgn_format() + " ")
             self.force_movenumber = True
 
     def visit_nag(self, nag: int) -> None:
@@ -1709,7 +1775,7 @@ def read_game(handle: TextIO, *, Visitor: Any = GameBuilder) -> Any:
                     line = line[close_index + 1:]
 
                 if not skip_variation_depth:
-                    visitor.visit_comment(["".join(comment_lines)])
+                    visitor.visit_comment(GameNodeComment("".join(comment_lines)))
 
                 # Continue with the current line.
                 fresh_line = False
diff --git a/test.py b/test.py
index c912948c4..8750031ca 100755
--- a/test.py
+++ b/test.py
@@ -2078,29 +2078,29 @@ class PgnTestCase(unittest.TestCase):
 
     def test_exporter(self):
         game = chess.pgn.Game()
-        game.comment = ["Test game:"]
+        game.comment.set("Test game:")
         game.headers["Result"] = "*"
         game.headers["VeryLongHeader"] = "This is a very long header, much wider than the 80 columns that PGNs are formatted with by default"
 
         e4 = game.add_variation(game.board().parse_san("e4"))
-        e4.comment = ["Scandinavian Defense:"]
+        e4.comment.set("Scandinavian Defense:")
 
         e4_d5 = e4.add_variation(e4.board().parse_san("d5"))
 
         e4_h5 = e4.add_variation(e4.board().parse_san("h5"))
         e4_h5.nags.add(chess.pgn.NAG_MISTAKE)
-        e4_h5.starting_comment = ["This"]
-        e4_h5.comment = ["is nonsense"]
+        e4_h5.starting_comment.set("This")
+        e4_h5.comment.set("is nonsense")
 
         e4_e5 = e4.add_variation(e4.board().parse_san("e5"))
         e4_e5_Qf3 = e4_e5.add_variation(e4_e5.board().parse_san("Qf3"))
         e4_e5_Qf3.nags.add(chess.pgn.NAG_MISTAKE)
 
         e4_c5 = e4.add_variation(e4.board().parse_san("c5"))
-        e4_c5.comment = ["Sicilian"]
+        e4_c5.comment.set("Sicilian")
 
         e4_d5_exd5 = e4_d5.add_main_variation(e4_d5.board().parse_san("exd5"))
-        e4_d5_exd5.comment = ["Best", "and the end of this example"]
+        e4_d5_exd5.comment.set(["Best", "and the end of this example"])
 
         # Test string exporter with various options.
         exporter = chess.pgn.StringExporter(headers=False, comments=False, variations=False)
@@ -2828,7 +2828,7 @@ def test_recursion(self):
 
     def test_annotations(self):
         game = chess.pgn.Game()
-        game.comment = ["foo [%bar] baz"]
+        game.comment = chess.pgn.GameNodeComment("foo [%bar] baz")
 
         self.assertTrue(game.clock() is None)
         clock = 12345
@@ -2879,7 +2879,7 @@ def test_eval(self):
 
     def test_float_emt(self):
         game = chess.pgn.Game()
-        game.comment = ["[%emt 0:00:01.234]"]
+        game.comment = chess.pgn.GameNodeComment("[%emt 0:00:01.234]")
         self.assertEqual(game.emt(), 1.234)
 
         game.set_emt(6.54321)
@@ -2892,7 +2892,7 @@ def test_float_emt(self):
 
     def test_float_clk(self):
         game = chess.pgn.Game()
-        game.comment = ["[%clk 0:00:01.234]"]
+        game.comment.set("[%clk 0:00:01.234]")
         self.assertEqual(game.clock(), 1.234)
 
         game.set_clock(6.54321)

From 829a3bf6ded7f8d738655ee924df90812b8af0c2 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 04:01:57 -0800
Subject: [PATCH 148/250] Empty GameNodeComments equal empty strings

---
 chess/pgn.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 763b90f02..058c932a8 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -239,7 +239,7 @@ def __add__(self, other: GameNodeComment) -> GameNodeComment:
 
     def __eq__(self, other: object) -> bool:
         if isinstance(other, str):
-            return len(self) == 1 and self[0] == other
+            return (len(self) == 1 and self[0] == other) or (not self and not other)
         elif isinstance(other, list):
             return self._comments == other
         elif isinstance(other, GameNodeComment):

From 7e0081e6d5b5f1188224a02ab9d78f0fe6b5b80d Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 04:02:15 -0800
Subject: [PATCH 149/250] Revert unnecessary test changes

---
 test.py | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/test.py b/test.py
index 8750031ca..f6d30a4d1 100755
--- a/test.py
+++ b/test.py
@@ -2219,7 +2219,7 @@ def test_read_game_with_multicomment_move(self):
         pgn = io.StringIO("1. e4 {A common opening} 1... e5 {A common response} {An uncommon comment}")
         game = chess.pgn.read_game(pgn)
         first_move = game.variation(0)
-        self.assertEqual(first_move.comment, ["A common opening"])
+        self.assertEqual(first_move.comment, "A common opening")
         second_move = first_move.variation(0)
         self.assertEqual(second_move.comment, ["A common response", "An uncommon comment"])
 
@@ -2237,7 +2237,7 @@ def test_comment_at_eol(self):
 
         # Make sure the comment for the second variation is there.
         self.assertIn(5, node[1].nags)
-        self.assertEqual(node[1].comment, ["\n/\\ Ne7, c6"])
+        self.assertEqual(node[1].comment, "\n/\\ Ne7, c6")
 
     def test_promotion_without_equals(self):
         # Example game from https://github.com/rozim/ChessData as originally
@@ -2325,12 +2325,12 @@ def test_variation_stack(self):
     def test_game_starting_comment(self):
         pgn = io.StringIO("{ Game starting comment } 1. d3")
         game = chess.pgn.read_game(pgn)
-        self.assertEqual(game.comment, ["Game starting comment"])
+        self.assertEqual(game.comment, "Game starting comment")
         self.assertEqual(game[0].san(), "d3")
 
         pgn = io.StringIO("{ Empty game, but has a comment }")
         game = chess.pgn.read_game(pgn)
-        self.assertEqual(game.comment, ["Empty game, but has a comment"])
+        self.assertEqual(game.comment, "Empty game, but has a comment")
 
     def test_game_starting_variation(self):
         pgn = io.StringIO(textwrap.dedent("""\
@@ -2338,7 +2338,7 @@ def test_game_starting_variation(self):
             """))
 
         game = chess.pgn.read_game(pgn)
-        self.assertEqual(game.comment, ["Start of game"])
+        self.assertEqual(game.comment, "Start of game")
 
         node = game[0]
         self.assertEqual(node.move, chess.Move.from_uci("e2e4"))
@@ -2348,7 +2348,7 @@ def test_game_starting_variation(self):
         node = game[1]
         self.assertEqual(node.move, chess.Move.from_uci("d2d4"))
         self.assertFalse(node.comment)
-        self.assertEqual(node.starting_comment, ["Start of variation"])
+        self.assertEqual(node.starting_comment, "Start of variation")
 
     def test_annotation_symbols(self):
         pgn = io.StringIO("1. b4?! g6 2. Bb2 Nc6? 3. Bxh8!!")
@@ -2693,12 +2693,12 @@ def test_add_line(self):
         tail = game.add_line(moves, starting_comment="start", comment="end", nags=(17, 42))
 
         self.assertEqual(tail.parent.move, chess.Move.from_uci("g1f3"))
-        self.assertEqual(tail.parent.starting_comment, ["start"])
-        self.assertEqual(tail.parent.comment, [])
+        self.assertEqual(tail.parent.starting_comment, "start")
+        self.assertEqual(tail.parent.comment, "")
         self.assertEqual(len(tail.parent.nags), 0)
 
         self.assertEqual(tail.move, chess.Move.from_uci("d7d5"))
-        self.assertEqual(tail.comment, ["end"])
+        self.assertEqual(tail.comment, "end")
         self.assertIn(42, tail.nags)
 
     def test_mainline(self):
@@ -2828,7 +2828,7 @@ def test_recursion(self):
 
     def test_annotations(self):
         game = chess.pgn.Game()
-        game.comment = chess.pgn.GameNodeComment("foo [%bar] baz")
+        game.comment.set("foo [%bar] baz")
 
         self.assertTrue(game.clock() is None)
         clock = 12345
@@ -2869,7 +2869,7 @@ def test_annotations(self):
 
         game.set_clock(None)
         game.set_arrows([])
-        self.assertEqual(game.comment, ["foo [%bar] baz"])
+        self.assertEqual(game.comment, "foo [%bar] baz")
 
     def test_eval(self):
         game = chess.pgn.Game()
@@ -2879,15 +2879,15 @@ def test_eval(self):
 
     def test_float_emt(self):
         game = chess.pgn.Game()
-        game.comment = chess.pgn.GameNodeComment("[%emt 0:00:01.234]")
+        game.comment.set("[%emt 0:00:01.234]")
         self.assertEqual(game.emt(), 1.234)
 
         game.set_emt(6.54321)
-        self.assertEqual(game.comment, ["[%emt 0:00:06.543]"])
+        self.assertEqual(game.comment, "[%emt 0:00:06.543]")
         self.assertEqual(game.emt(), 6.543)
 
         game.set_emt(-70)
-        self.assertEqual(game.comment, ["[%emt 0:00:00]"])  # Clamped
+        self.assertEqual(game.comment, "[%emt 0:00:00]")  # Clamped
         self.assertEqual(game.emt(), 0)
 
     def test_float_clk(self):
@@ -2896,11 +2896,11 @@ def test_float_clk(self):
         self.assertEqual(game.clock(), 1.234)
 
         game.set_clock(6.54321)
-        self.assertEqual(game.comment, ["[%clk 0:00:06.543]"])
+        self.assertEqual(game.comment, "[%clk 0:00:06.543]")
         self.assertEqual(game.clock(), 6.543)
 
         game.set_clock(-70)
-        self.assertEqual(game.comment, ["[%clk 0:00:00]"])  # Clamped
+        self.assertEqual(game.comment, "[%clk 0:00:00]")  # Clamped
         self.assertEqual(game.clock(), 0)
 
     def test_node_turn(self):

From b524c3a130c8a535b060af7e73e82339c97617eb Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 04:24:26 -0800
Subject: [PATCH 150/250] Combine append() and extend() methods

---
 chess/pgn.py | 23 ++++++++---------------
 1 file changed, 8 insertions(+), 15 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 058c932a8..a44aea6fb 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -209,13 +209,13 @@ def remove_empty(self) -> None:
         """Remove empty comments from the comment list."""
         self._comments = list(filter(None, self._comments))
 
-    def append(self, new_comment: str) -> None:
-        """Append a new comment to the end of the comment list."""
-        self._comments.append(new_comment)
-
-    def extend(self, new_comments: list[str]) -> None:
-        """Append several new comments to the end of the comment list."""
-        self._comments.extend(new_comments)
+    def append(self, new_comment: Union[str, list[str]]) -> None:
+        """Append one or more new comments to the end of the comment list."""
+        if new_comment:
+            if isinstance(new_comment, str):
+                self._comments.append(new_comment)
+            else:
+                self._comments.extend(new_comment)
 
     def insert(self, index: int, new_comment: str) -> None:
         """Insert a new comment before the specified index."""
@@ -494,14 +494,7 @@ def add_line(self, moves: Iterable[chess.Move], *, comment: Union[str, list[str]
             starting_comment = ""
 
         # Merge comment and NAGs.
-        if node.comment:
-            if isinstance(comment, str):
-                node.comment.append(comment)
-            else:
-                node.comment.extend(comment)
-        else:
-            node.comment.set(comment)
-
+        node.comment.append(comment)
         node.nags.update(nags)
 
         return node

From 9123ebd98765ccda2b81b21118d0a7e007937d10 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 04:30:00 -0800
Subject: [PATCH 151/250] Add missing return type annotation

---
 chess/pgn.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index a44aea6fb..6fc34133c 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -193,7 +193,7 @@ class GameNodeComment:
     def __init__(self, comment: Union[str, list[str]] = ""):
         self.set(comment)
 
-    def set(self, new_comment: Union[str, list[str]]):
+    def set(self, new_comment: Union[str, list[str]]) -> None:
         """Replace the comment with a new comment or a list of comments."""
         self._comments = new_comment if isinstance(new_comment, list) else [new_comment] if new_comment else []
 

From 4e084cc1d652fcf4070dd8eee0a5c561534631d5 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 20:56:04 -0800
Subject: [PATCH 152/250] Remove unneeded GameNodeComment instance

---
 chess/pgn.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 6fc34133c..78c238287 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -201,9 +201,8 @@ def pgn_format(self) -> str:
         """Create a string representation of the comments in PGN format."""
         comments = list(map(lambda s: s.replace("{", ""), self._comments))
         comments = list(map(lambda s: s.replace("}", "").strip(), comments))
-        output_comments = GameNodeComment(comments)
-        output_comments.remove_empty()
-        return "{ " + output_comments.join(" } { ") + " }"
+        comments = list(filter(None, comments))
+        return "{ " + " } { ".join(comments) + " }"
 
     def remove_empty(self) -> None:
         """Remove empty comments from the comment list."""

From 91801c873b58d20a48d533027d4f940907a4a3ac Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 21:37:36 -0800
Subject: [PATCH 153/250] Use @property to make changes backwards compatible

---
 chess/pgn.py | 52 ++++++++++++++++++++++++++++++++++++++++++++++------
 test.py      | 18 +++++++++---------
 2 files changed, 55 insertions(+), 15 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 78c238287..5cc70747a 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -233,8 +233,13 @@ def __getitem__(self, index: int) -> str:
     def __setitem__(self, index: int, new_comment: str) -> None:
         self._comments[index] = new_comment
 
-    def __add__(self, other: GameNodeComment) -> GameNodeComment:
-        return GameNodeComment(self._comments + other._comments)
+    def __add__(self, other: Union[str, list[str], GameNodeComment]) -> GameNodeComment:
+        if not isinstance(other, GameNodeComment):
+            new_node_comment = GameNodeComment(self._comments)
+            new_node_comment.append(other)
+            return new_node_comment
+        else:
+            return GameNodeComment(self._comments + other._comments)
 
     def __eq__(self, other: object) -> bool:
         if isinstance(other, str):
@@ -260,13 +265,37 @@ class GameNode(abc.ABC):
     variations: List[ChildNode]
     """A list of child nodes."""
 
-    comment: GameNodeComment
+    _comment: GameNodeComment
     """
     A comment that goes behind the move leading to this node. Comments
     that occur before any moves are assigned to the root node.
     """
 
-    starting_comment: GameNodeComment
+    @property
+    def comment(self) -> GameNodeComment:
+        return self._comment
+
+    @comment.setter
+    def comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
+        if isinstance(new_comment, GameNodeComment):
+            self._comment = new_comment
+        else:
+            self._comment = GameNodeComment(new_comment)
+
+
+    _starting_comment: GameNodeComment
+
+    @property
+    def starting_comment(self) -> GameNodeComment:
+        return self._starting_comment
+
+    @starting_comment.setter
+    def starting_comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
+        if isinstance(new_comment, GameNodeComment):
+            self._starting_comment = new_comment
+        else:
+            self._starting_comment = GameNodeComment(new_comment)
+
     nags: Set[int]
 
     def __init__(self, *, comment: Union[str, list[str]] = "") -> None:
@@ -733,7 +762,7 @@ class ChildNode(GameNode):
     move: chess.Move
     """The move leading to this node."""
 
-    starting_comment: GameNodeComment
+    _starting_comment: GameNodeComment
     """
     A comment for the start of a variation. Only nodes that
     actually start a variation (:func:`~chess.pgn.GameNode.starts_variation()`
@@ -741,6 +770,17 @@ class ChildNode(GameNode):
     a starting comment.
     """
 
+    @property
+    def starting_comment(self) -> GameNodeComment:
+        return self._starting_comment
+
+    @starting_comment.setter
+    def starting_comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
+        if isinstance(new_comment, GameNodeComment):
+            self._starting_comment = new_comment
+        else:
+            self._starting_comment = GameNodeComment(new_comment)
+
     nags: Set[int]
     """
     A set of NAGs as integers. NAGs always go behind a move, so the root
@@ -1767,7 +1807,7 @@ def read_game(handle: TextIO, *, Visitor: Any = GameBuilder) -> Any:
                     line = line[close_index + 1:]
 
                 if not skip_variation_depth:
-                    visitor.visit_comment(GameNodeComment("".join(comment_lines)))
+                    visitor.visit_comment("".join(comment_lines))
 
                 # Continue with the current line.
                 fresh_line = False
diff --git a/test.py b/test.py
index f6d30a4d1..91e54e5d5 100755
--- a/test.py
+++ b/test.py
@@ -2078,29 +2078,29 @@ class PgnTestCase(unittest.TestCase):
 
     def test_exporter(self):
         game = chess.pgn.Game()
-        game.comment.set("Test game:")
+        game.comment = "Test game:"
         game.headers["Result"] = "*"
         game.headers["VeryLongHeader"] = "This is a very long header, much wider than the 80 columns that PGNs are formatted with by default"
 
         e4 = game.add_variation(game.board().parse_san("e4"))
-        e4.comment.set("Scandinavian Defense:")
+        e4.comment = "Scandinavian Defense:"
 
         e4_d5 = e4.add_variation(e4.board().parse_san("d5"))
 
         e4_h5 = e4.add_variation(e4.board().parse_san("h5"))
         e4_h5.nags.add(chess.pgn.NAG_MISTAKE)
-        e4_h5.starting_comment.set("This")
-        e4_h5.comment.set("is nonsense")
+        e4_h5.starting_comment = "This"
+        e4_h5.comment = "is nonsense"
 
         e4_e5 = e4.add_variation(e4.board().parse_san("e5"))
         e4_e5_Qf3 = e4_e5.add_variation(e4_e5.board().parse_san("Qf3"))
         e4_e5_Qf3.nags.add(chess.pgn.NAG_MISTAKE)
 
         e4_c5 = e4.add_variation(e4.board().parse_san("c5"))
-        e4_c5.comment.set("Sicilian")
+        e4_c5.comment = "Sicilian"
 
         e4_d5_exd5 = e4_d5.add_main_variation(e4_d5.board().parse_san("exd5"))
-        e4_d5_exd5.comment.set(["Best", "and the end of this example"])
+        e4_d5_exd5.comment = ["Best", "and the end of this example"]
 
         # Test string exporter with various options.
         exporter = chess.pgn.StringExporter(headers=False, comments=False, variations=False)
@@ -2828,7 +2828,7 @@ def test_recursion(self):
 
     def test_annotations(self):
         game = chess.pgn.Game()
-        game.comment.set("foo [%bar] baz")
+        game.comment = "foo [%bar] baz"
 
         self.assertTrue(game.clock() is None)
         clock = 12345
@@ -2879,7 +2879,7 @@ def test_eval(self):
 
     def test_float_emt(self):
         game = chess.pgn.Game()
-        game.comment.set("[%emt 0:00:01.234]")
+        game.comment = "[%emt 0:00:01.234]"
         self.assertEqual(game.emt(), 1.234)
 
         game.set_emt(6.54321)
@@ -2892,7 +2892,7 @@ def test_float_emt(self):
 
     def test_float_clk(self):
         game = chess.pgn.Game()
-        game.comment.set("[%clk 0:00:01.234]")
+        game.comment = "[%clk 0:00:01.234]"
         self.assertEqual(game.clock(), 1.234)
 
         game.set_clock(6.54321)

From 54e044ac6fc2e9288453a72b3a8db435d3380f2b Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 21:50:47 -0800
Subject: [PATCH 154/250] Positive branch first

---
 chess/pgn.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 5cc70747a..a9910f45b 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -234,12 +234,12 @@ def __setitem__(self, index: int, new_comment: str) -> None:
         self._comments[index] = new_comment
 
     def __add__(self, other: Union[str, list[str], GameNodeComment]) -> GameNodeComment:
-        if not isinstance(other, GameNodeComment):
-            new_node_comment = GameNodeComment(self._comments)
+        if isinstance(other, GameNodeComment):
+            return GameNodeComment(self._comments + other._comments)
+        else:
+            new_node_comment = GameNodeComment(self._comments.copy())
             new_node_comment.append(other)
             return new_node_comment
-        else:
-            return GameNodeComment(self._comments + other._comments)
 
     def __eq__(self, other: object) -> bool:
         if isinstance(other, str):

From aa47f1e7de3a36ff117b6b2ac9c3ef0b23bef3b8 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 22:11:05 -0800
Subject: [PATCH 155/250] Add display methods to GameNodeComment

---
 chess/pgn.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/chess/pgn.py b/chess/pgn.py
index a9910f45b..7695a1c68 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -251,6 +251,12 @@ def __eq__(self, other: object) -> bool:
         else:
             return False
 
+    def __repr__(self) -> str:
+        return f"{self.__class__.__name__}({self._comments})"
+
+    def __str__(self) -> str:
+        return self.pgn_format()
+
 
 class GameNode(abc.ABC):
     parent: Optional[GameNode]

From f1a56125104ca3c80a9c615c949d18401b465948 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Thu, 22 Feb 2024 22:57:05 -0800
Subject: [PATCH 156/250] Create method for deleting individual comments

---
 chess/pgn.py | 4 ++++
 test.py      | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/chess/pgn.py b/chess/pgn.py
index 7695a1c68..fd3096013 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -220,6 +220,10 @@ def insert(self, index: int, new_comment: str) -> None:
         """Insert a new comment before the specified index."""
         self._comments.insert(index, new_comment)
 
+    def pop(self, index: int = -1) -> None:
+        """Delete comment at the given index (default is the last comment)."""
+        self._comments.pop(index)
+
     def join(self, joiner: str) -> str:
         """Join all of the comments together with a joiner string between each."""
         return joiner.join(self._comments)
diff --git a/test.py b/test.py
index 91e54e5d5..cbc41d6dd 100755
--- a/test.py
+++ b/test.py
@@ -2222,6 +2222,14 @@ def test_read_game_with_multicomment_move(self):
         self.assertEqual(first_move.comment, "A common opening")
         second_move = first_move.variation(0)
         self.assertEqual(second_move.comment, ["A common response", "An uncommon comment"])
+        second_move.comment.pop()
+        self.assertEqual(second_move.comment, ["A common response"])
+        self.assertEqual(second_move.comment, "A common response")
+        second_move.comment.append("A replaced comment")
+        self.assertEqual(second_move.comment, ["A common response", "A replaced comment"])
+        second_move.comment.pop(0)
+        self.assertEqual(second_move.comment, ["A replaced comment"])
+        self.assertEqual(second_move.comment, "A replaced comment")
 
     def test_comment_at_eol(self):
         pgn = io.StringIO(textwrap.dedent("""\

From 8e91525e47593932911951919a6855f2ea2aa170 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 24 Feb 2024 20:20:38 +0100
Subject: [PATCH 157/250] Add sf16.1 WDL model

---
 chess/engine.py | 17 +++++++++++++++--
 test.py         |  3 ++-
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index b1d3896ab..b72bf5907 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -24,7 +24,7 @@
 from types import TracebackType
 from typing import Any, Callable, Coroutine, Deque, Dict, Generator, Generic, Iterable, Iterator, List, Literal, Mapping, MutableMapping, Optional, Tuple, Type, TypedDict, TypeVar, Union
 
-WdlModel = Literal["sf", "sf16", "sf15.1", "sf15", "sf14", "sf12", "lichess"]
+WdlModel = Literal["sf", "sf16.1", "sf16", "sf15.1", "sf15", "sf14", "sf12", "lichess"]
 
 
 T = TypeVar("T")
@@ -516,6 +516,16 @@ def __ge__(self, other: object) -> bool:
         else:
             return NotImplemented
 
+def _sf16_1_wins(cp: int, *, ply=int) -> int:
+    # https://github.com/official-stockfish/Stockfish/blob/sf_16.1/src/uci.cpp#L48
+    NormalizeToPawnValue = 356
+    # https://github.com/official-stockfish/Stockfish/blob/sf_16.1/src/uci.cpp#L383-L384
+    m = min(120, max(8, ply / 2 + 1)) / 32
+    a = (((-1.06249702 * m + 7.42016937) * m + 0.89425629) * m) + 348.60356174
+    b = (((-5.33122190 * m + 39.57831533) * m + -90.84473771) * m) + 123.40620748
+    x = min(4000, max(cp * NormalizeToPawnValue / 100, -4000))
+    return int(0.5 + 1000 / (1 + math.exp((a - x) / b)))
+
 def _sf16_wins(cp: int, *, ply: int) -> int:
     # https://github.com/official-stockfish/Stockfish/blob/sf_16/src/uci.h#L38
     NormalizeToPawnValue = 328
@@ -594,9 +604,12 @@ def wdl(self, *, model: WdlModel = "sf", ply: int = 30) -> Wdl:
         elif model == "sf15.1":
             wins = _sf15_1_wins(self.cp, ply=ply)
             losses = _sf15_1_wins(-self.cp, ply=ply)
-        else:
+        elif model == "sf16":
             wins = _sf16_wins(self.cp, ply=ply)
             losses = _sf16_wins(-self.cp, ply=ply)
+        else:
+            wins = _sf16_1_wins(self.cp, ply=ply)
+            losses = _sf16_1_wins(-self.cp, ply=ply)
         draws = 1000 - wins - losses
         return Wdl(wins, draws, losses)
 
diff --git a/test.py b/test.py
index e1d0d50c5..8dbc95a25 100755
--- a/test.py
+++ b/test.py
@@ -2995,7 +2995,7 @@ def test_score_ordering(self):
                 self.assertEqual(i >= j, a >= b)
                 self.assertEqual(i < j, a.score(mate_score=100000) < b.score(mate_score=100000))
 
-                for model in ["sf12", "sf14", "sf15", "sf15.1", "sf16"]:
+                for model in ["sf12", "sf14", "sf15", "sf15.1", "sf16", "sf16.1"]:
                     self.assertTrue(not (i < j) or a.wdl(model=model).expectation() <= b.wdl(model=model).expectation())
                     self.assertTrue(not (i < j) or a.wdl(model=model).winning_chance() <= b.wdl(model=model).winning_chance())
                     self.assertTrue(not (i < j) or a.wdl(model=model).losing_chance() >= b.wdl(model=model).losing_chance())
@@ -3035,6 +3035,7 @@ def test_wdl_model(self):
         self.assertEqual(chess.engine.Cp(40).wdl(model="sf15", ply=25), chess.engine.Wdl(58, 937, 5))
         self.assertEqual(chess.engine.Cp(100).wdl(model="sf15.1", ply=64), chess.engine.Wdl(497, 503, 0))
         self.assertEqual(chess.engine.Cp(-52).wdl(model="sf16", ply=63), chess.engine.Wdl(0, 932, 68))
+        self.assertEqual(chess.engine.Cp(51).wdl(model="sf16.1", ply=158), chess.engine.Wdl(36, 964, 0))
 
     @catchAndSkip(FileNotFoundError, "need stockfish")
     def test_sf_forced_mates(self):

From 315052c0105ea1e0d0b4e1cbee70577fd9349f2d Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 24 Feb 2024 20:25:56 +0100
Subject: [PATCH 158/250] Fix argument syntax

---
 chess/engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index b72bf5907..c2b470dd5 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -516,7 +516,7 @@ def __ge__(self, other: object) -> bool:
         else:
             return NotImplemented
 
-def _sf16_1_wins(cp: int, *, ply=int) -> int:
+def _sf16_1_wins(cp: int, *, ply: int) -> int:
     # https://github.com/official-stockfish/Stockfish/blob/sf_16.1/src/uci.cpp#L48
     NormalizeToPawnValue = 356
     # https://github.com/official-stockfish/Stockfish/blob/sf_16.1/src/uci.cpp#L383-L384

From 8756e7878b2076fe9a7fe574086e43be58d4e7a2 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 28 Feb 2024 01:05:43 -0800
Subject: [PATCH 159/250] Test that GameNodeComment is iterable

---
 test.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/test.py b/test.py
index cbc41d6dd..ee770de0f 100755
--- a/test.py
+++ b/test.py
@@ -2226,7 +2226,11 @@ def test_read_game_with_multicomment_move(self):
         self.assertEqual(second_move.comment, ["A common response"])
         self.assertEqual(second_move.comment, "A common response")
         second_move.comment.append("A replaced comment")
-        self.assertEqual(second_move.comment, ["A common response", "A replaced comment"])
+        multiple_comments = ["A common response", "A replaced comment"]
+        self.assertEqual(second_move.comment, multiple_comments)
+        for move_comment, test_comment in zip(second_move.comment, multiple_comments):
+            self.assertEqual(move_comment, test_comment)
+        self.assertEqual(list(second_move.comment), multiple_comments)
         second_move.comment.pop(0)
         self.assertEqual(second_move.comment, ["A replaced comment"])
         self.assertEqual(second_move.comment, "A replaced comment")

From 603c9755e23093ddf985a603fa19f6b24878cad0 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 28 Feb 2024 01:20:01 -0800
Subject: [PATCH 160/250] Make pgn_format() code easier to read

---
 chess/pgn.py | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index fd3096013..2d7f31096 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -199,10 +199,9 @@ def set(self, new_comment: Union[str, list[str]]) -> None:
 
     def pgn_format(self) -> str:
         """Create a string representation of the comments in PGN format."""
-        comments = list(map(lambda s: s.replace("{", ""), self._comments))
-        comments = list(map(lambda s: s.replace("}", "").strip(), comments))
-        comments = list(filter(None, comments))
-        return "{ " + " } { ".join(comments) + " }"
+        comments = map(lambda s: s.replace("{", ""), self._comments)
+        comments = map(lambda s: s.replace("}", "").strip(), comments)
+        return " ".join(f"{{ {comment} }}" for comment in comments if comment)
 
     def remove_empty(self) -> None:
         """Remove empty comments from the comment list."""

From cce50dcacd0774d6a6595de1ce65b5f0dd7b5101 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 28 Feb 2024 01:54:19 -0800
Subject: [PATCH 161/250] Use built-in join()

---
 chess/pgn.py | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 2d7f31096..0e0345a92 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -223,10 +223,6 @@ def pop(self, index: int = -1) -> None:
         """Delete comment at the given index (default is the last comment)."""
         self._comments.pop(index)
 
-    def join(self, joiner: str) -> str:
-        """Join all of the comments together with a joiner string between each."""
-        return joiner.join(self._comments)
-
     def __len__(self) -> int:
         return len(self._comments)
 
@@ -236,6 +232,9 @@ def __getitem__(self, index: int) -> str:
     def __setitem__(self, index: int, new_comment: str) -> None:
         self._comments[index] = new_comment
 
+    def __iter__(self) -> Iterator[str]:
+        return iter(self._comments)
+
     def __add__(self, other: Union[str, list[str], GameNodeComment]) -> GameNodeComment:
         if isinstance(other, GameNodeComment):
             return GameNodeComment(self._comments + other._comments)
@@ -543,7 +542,7 @@ def eval(self) -> Optional[chess.engine.PovScore]:
 
         Complexity is `O(n)`.
         """
-        match = EVAL_REGEX.search(self.comment.join(" "))
+        match = EVAL_REGEX.search(" ".join(self.comment))
         if not match:
             return None
 
@@ -569,7 +568,7 @@ def eval_depth(self) -> Optional[int]:
 
         Complexity is `O(1)`.
         """
-        match = EVAL_REGEX.search(self.comment.join(" "))
+        match = EVAL_REGEX.search(" ".join(self.comment))
         return int(match.group("depth")) if match and match.group("depth") else None
 
     def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int] = None) -> None:
@@ -605,7 +604,7 @@ def arrows(self) -> List[chess.svg.Arrow]:
         Returns a list of :class:`arrows <chess.svg.Arrow>`.
         """
         arrows = []
-        for match in ARROWS_REGEX.finditer(self.comment.join(" ")):
+        for match in ARROWS_REGEX.finditer(" ".join(self.comment)):
             for group in match.group("arrows").split(","):
                 arrows.append(chess.svg.Arrow.from_pgn(group))
 
@@ -649,7 +648,7 @@ def clock(self) -> Optional[float]:
         Returns the player's remaining time to the next time control after this
         move, in seconds.
         """
-        match = CLOCK_REGEX.search(self.comment.join(" "))
+        match = CLOCK_REGEX.search(" ".join(self.comment))
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))
@@ -687,7 +686,7 @@ def emt(self) -> Optional[float]:
         Returns the player's elapsed move time use for the comment of this
         move, in seconds.
         """
-        match = EMT_REGEX.search(self.comment.join(" "))
+        match = EMT_REGEX.search(" ".join(self.comment))
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))

From 4e695e2bc7c50066c0f84abd4206e61c917b2d03 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 28 Feb 2024 02:04:08 -0800
Subject: [PATCH 162/250] Add docstrings for methods

Also, fix spacing.
---
 chess/pgn.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 0e0345a92..36cac2c59 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -190,7 +190,9 @@ class GameNodeComment:
 
     A class that can hold one or more comments for a GameNode.
     """
+
     def __init__(self, comment: Union[str, list[str]] = ""):
+        """Create a new comment."""
         self.set(comment)
 
     def set(self, new_comment: Union[str, list[str]]) -> None:
@@ -224,18 +226,23 @@ def pop(self, index: int = -1) -> None:
         self._comments.pop(index)
 
     def __len__(self) -> int:
+        """Get the number of comments in this node."""
         return len(self._comments)
 
     def __getitem__(self, index: int) -> str:
+        """Get the comment at the given index."""
         return self._comments[index]
 
     def __setitem__(self, index: int, new_comment: str) -> None:
+        """Change the comment at the given index."""
         self._comments[index] = new_comment
 
     def __iter__(self) -> Iterator[str]:
+        """Return an iterator over all comments."""
         return iter(self._comments)
 
     def __add__(self, other: Union[str, list[str], GameNodeComment]) -> GameNodeComment:
+        """Create a new comment set by adding two comment sets with +."""
         if isinstance(other, GameNodeComment):
             return GameNodeComment(self._comments + other._comments)
         else:
@@ -244,6 +251,7 @@ def __add__(self, other: Union[str, list[str], GameNodeComment]) -> GameNodeComm
             return new_node_comment
 
     def __eq__(self, other: object) -> bool:
+        """Check for equality between two comment sets."""
         if isinstance(other, str):
             return (len(self) == 1 and self[0] == other) or (not self and not other)
         elif isinstance(other, list):
@@ -254,9 +262,11 @@ def __eq__(self, other: object) -> bool:
             return False
 
     def __repr__(self) -> str:
+        """Return a code-like representation of the class."""
         return f"{self.__class__.__name__}({self._comments})"
 
     def __str__(self) -> str:
+        """Return a string representation of the comments in PGN format."""
         return self.pgn_format()
 
 
@@ -290,7 +300,6 @@ def comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
         else:
             self._comment = GameNodeComment(new_comment)
 
-
     _starting_comment: GameNodeComment
 
     @property

From d1dce61a45ed3784ce867ec0218d6fb3ca47e735 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 18 Apr 2024 15:53:08 +0200
Subject: [PATCH 163/250] Bump Sphinx to 7.3.6

---
 docs/requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/requirements.txt b/docs/requirements.txt
index a63c6a7ca..7516f64de 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
-Sphinx==6.1.2
+Sphinx==7.3.6
 sphinxcontrib-jquery==4.1
 sphinx-rtd-theme==1.3.0

From 4c7a9025e3442fb75a14eae367fd88200e210042 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 18 Apr 2024 17:40:45 +0200
Subject: [PATCH 164/250] Use typing_extensions.TypeAlias (#564)

---
 chess/__init__.py | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index a9328a04b..9eeb2c5e2 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -24,15 +24,19 @@
 
 from typing import ClassVar, Callable, Counter, Dict, Generic, Hashable, Iterable, Iterator, List, Literal, Mapping, Optional, SupportsInt, Tuple, Type, TypeVar, Union
 
+if typing.TYPE_CHECKING:
+    from typing_extensions import TypeAlias
+
+
 EnPassantSpec = Literal["legal", "fen", "xfen"]
 
 
-Color = bool
+Color: TypeAlias = bool
 COLORS = [WHITE, BLACK] = [True, False]
 ColorName = Literal["white", "black"]
 COLOR_NAMES: List[ColorName] = ["black", "white"]
 
-PieceType = int
+PieceType: TypeAlias = int
 PIECE_TYPES = [PAWN, KNIGHT, BISHOP, ROOK, QUEEN, KING] = range(1, 7)
 PIECE_SYMBOLS = [None, "p", "n", "b", "r", "q", "k"]
 PIECE_NAMES = [None, "pawn", "knight", "bishop", "rook", "queen", "king"]
@@ -157,7 +161,7 @@ class AmbiguousMoveError(ValueError):
     """Raised when the attempted move is ambiguous in the current position"""
 
 
-Square = int
+Square: TypeAlias = int
 SQUARES = [
     A1, B1, C1, D1, E1, F1, G1, H1,
     A2, B2, C2, D2, E2, F2, G2, H2,
@@ -233,7 +237,7 @@ def square_mirror(square: Square) -> Square:
 SQUARES_180 = [square_mirror(sq) for sq in SQUARES]
 
 
-Bitboard = int
+Bitboard: TypeAlias = int
 BB_EMPTY = 0
 BB_ALL = 0xffff_ffff_ffff_ffff
 
@@ -3816,7 +3820,7 @@ def __repr__(self) -> str:
         return f"<LegalMoveGenerator at {id(self):#x} ({sans})>"
 
 
-IntoSquareSet = Union[SupportsInt, Iterable[Square]]
+IntoSquareSet: TypeAlias = Union[SupportsInt, Iterable[Square]]
 
 class SquareSet:
     """

From 6af0ff4c8947486e3e3fa8e83ca88815301aaa37 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 18 Apr 2024 17:59:10 +0200
Subject: [PATCH 165/250] Expand core constant definitions

More verbose, but better IDE support
---
 chess/__init__.py | 234 ++++++++++++++++++++++++++++++++++------------
 1 file changed, 175 insertions(+), 59 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 9eeb2c5e2..f9a9ab7f5 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -32,12 +32,20 @@
 
 
 Color: TypeAlias = bool
-COLORS = [WHITE, BLACK] = [True, False]
+WHITE: Color = True
+BLACK: Color = False
+COLORS: List[Color] = [WHITE, BLACK]
 ColorName = Literal["white", "black"]
 COLOR_NAMES: List[ColorName] = ["black", "white"]
 
 PieceType: TypeAlias = int
-PIECE_TYPES = [PAWN, KNIGHT, BISHOP, ROOK, QUEEN, KING] = range(1, 7)
+PAWN: PieceType = 1
+KNIGHT: PieceType = 2
+BISHOP: PieceType = 3
+ROOK: PieceType = 4
+QUEEN: PieceType = 5
+KING: PieceType = 6
+PIECE_TYPES: List[PieceType] = [PAWN, KNIGHT, BISHOP, ROOK, QUEEN, KING]
 PIECE_SYMBOLS = [None, "p", "n", "b", "r", "q", "k"]
 PIECE_NAMES = [None, "pawn", "knight", "bishop", "rook", "queen", "king"]
 
@@ -162,16 +170,71 @@ class AmbiguousMoveError(ValueError):
 
 
 Square: TypeAlias = int
-SQUARES = [
-    A1, B1, C1, D1, E1, F1, G1, H1,
-    A2, B2, C2, D2, E2, F2, G2, H2,
-    A3, B3, C3, D3, E3, F3, G3, H3,
-    A4, B4, C4, D4, E4, F4, G4, H4,
-    A5, B5, C5, D5, E5, F5, G5, H5,
-    A6, B6, C6, D6, E6, F6, G6, H6,
-    A7, B7, C7, D7, E7, F7, G7, H7,
-    A8, B8, C8, D8, E8, F8, G8, H8,
-] = range(64)
+A1: Square = 0
+B1: Square = 1
+C1: Square = 2
+D1: Square = 3
+E1: Square = 4
+F1: Square = 5
+G1: Square = 6
+H1: Square = 7
+A2: Square = 8
+B2: Square = 9
+C2: Square = 10
+D2: Square = 11
+E2: Square = 12
+F2: Square = 13
+G2: Square = 14
+H2: Square = 15
+A3: Square = 16
+B3: Square = 17
+C3: Square = 18
+D3: Square = 19
+E3: Square = 20
+F3: Square = 21
+G3: Square = 22
+H3: Square = 23
+A4: Square = 24
+B4: Square = 25
+C4: Square = 26
+D4: Square = 27
+E4: Square = 28
+F4: Square = 29
+G4: Square = 30
+H4: Square = 31
+A5: Square = 32
+B5: Square = 33
+C5: Square = 34
+D5: Square = 35
+E5: Square = 36
+F5: Square = 37
+G5: Square = 38
+H5: Square = 39
+A6: Square = 40
+B6: Square = 41
+C6: Square = 42
+D6: Square = 43
+E6: Square = 44
+F6: Square = 45
+G6: Square = 46
+H6: Square = 47
+A7: Square = 48
+B7: Square = 49
+C7: Square = 50
+D7: Square = 51
+E7: Square = 52
+F7: Square = 53
+G7: Square = 54
+H7: Square = 55
+A8: Square = 56
+B8: Square = 57
+C8: Square = 58
+D8: Square = 59
+E8: Square = 60
+F8: Square = 61
+G8: Square = 62
+H8: Square = 63
+SQUARES: List[Square] = list(range(64))
 
 SQUARE_NAMES = [f + r for r in RANK_NAMES for f in FILE_NAMES]
 
@@ -234,53 +297,106 @@ def square_mirror(square: Square) -> Square:
     """Mirrors the square vertically."""
     return square ^ 0x38
 
-SQUARES_180 = [square_mirror(sq) for sq in SQUARES]
+SQUARES_180: List[Square] = [square_mirror(sq) for sq in SQUARES]
 
 
 Bitboard: TypeAlias = int
-BB_EMPTY = 0
-BB_ALL = 0xffff_ffff_ffff_ffff
-
-BB_SQUARES = [
-    BB_A1, BB_B1, BB_C1, BB_D1, BB_E1, BB_F1, BB_G1, BB_H1,
-    BB_A2, BB_B2, BB_C2, BB_D2, BB_E2, BB_F2, BB_G2, BB_H2,
-    BB_A3, BB_B3, BB_C3, BB_D3, BB_E3, BB_F3, BB_G3, BB_H3,
-    BB_A4, BB_B4, BB_C4, BB_D4, BB_E4, BB_F4, BB_G4, BB_H4,
-    BB_A5, BB_B5, BB_C5, BB_D5, BB_E5, BB_F5, BB_G5, BB_H5,
-    BB_A6, BB_B6, BB_C6, BB_D6, BB_E6, BB_F6, BB_G6, BB_H6,
-    BB_A7, BB_B7, BB_C7, BB_D7, BB_E7, BB_F7, BB_G7, BB_H7,
-    BB_A8, BB_B8, BB_C8, BB_D8, BB_E8, BB_F8, BB_G8, BB_H8,
-] = [1 << sq for sq in SQUARES]
-
-BB_CORNERS = BB_A1 | BB_H1 | BB_A8 | BB_H8
-BB_CENTER = BB_D4 | BB_E4 | BB_D5 | BB_E5
-
-BB_LIGHT_SQUARES = 0x55aa_55aa_55aa_55aa
-BB_DARK_SQUARES = 0xaa55_aa55_aa55_aa55
-
-BB_FILES = [
-    BB_FILE_A,
-    BB_FILE_B,
-    BB_FILE_C,
-    BB_FILE_D,
-    BB_FILE_E,
-    BB_FILE_F,
-    BB_FILE_G,
-    BB_FILE_H,
-] = [0x0101_0101_0101_0101 << i for i in range(8)]
-
-BB_RANKS = [
-    BB_RANK_1,
-    BB_RANK_2,
-    BB_RANK_3,
-    BB_RANK_4,
-    BB_RANK_5,
-    BB_RANK_6,
-    BB_RANK_7,
-    BB_RANK_8,
-] = [0xff << (8 * i) for i in range(8)]
-
-BB_BACKRANKS = BB_RANK_1 | BB_RANK_8
+BB_EMPTY: Bitboard = 0
+BB_ALL: Bitboard = 0xffff_ffff_ffff_ffff
+
+BB_A1: Bitboard = 1 << A1
+BB_B1: Bitboard = 1 << B1
+BB_C1: Bitboard = 1 << C1
+BB_D1: Bitboard = 1 << D1
+BB_E1: Bitboard = 1 << E1
+BB_F1: Bitboard = 1 << F1
+BB_G1: Bitboard = 1 << G1
+BB_H1: Bitboard = 1 << H1
+BB_A2: Bitboard = 1 << A2
+BB_B2: Bitboard = 1 << B2
+BB_C2: Bitboard = 1 << C2
+BB_D2: Bitboard = 1 << D2
+BB_E2: Bitboard = 1 << E2
+BB_F2: Bitboard = 1 << F2
+BB_G2: Bitboard = 1 << G2
+BB_H2: Bitboard = 1 << H2
+BB_A3: Bitboard = 1 << A3
+BB_B3: Bitboard = 1 << B3
+BB_C3: Bitboard = 1 << C3
+BB_D3: Bitboard = 1 << D3
+BB_E3: Bitboard = 1 << E3
+BB_F3: Bitboard = 1 << F3
+BB_G3: Bitboard = 1 << G3
+BB_H3: Bitboard = 1 << H3
+BB_A4: Bitboard = 1 << A4
+BB_B4: Bitboard = 1 << B4
+BB_C4: Bitboard = 1 << C4
+BB_D4: Bitboard = 1 << D4
+BB_E4: Bitboard = 1 << E4
+BB_F4: Bitboard = 1 << F4
+BB_G4: Bitboard = 1 << G4
+BB_H4: Bitboard = 1 << H4
+BB_A5: Bitboard = 1 << A5
+BB_B5: Bitboard = 1 << B5
+BB_C5: Bitboard = 1 << C5
+BB_D5: Bitboard = 1 << D5
+BB_E5: Bitboard = 1 << E5
+BB_F5: Bitboard = 1 << F5
+BB_G5: Bitboard = 1 << G5
+BB_H5: Bitboard = 1 << H5
+BB_A6: Bitboard = 1 << A6
+BB_B6: Bitboard = 1 << B6
+BB_C6: Bitboard = 1 << C6
+BB_D6: Bitboard = 1 << D6
+BB_E6: Bitboard = 1 << E6
+BB_F6: Bitboard = 1 << F6
+BB_G6: Bitboard = 1 << G6
+BB_H6: Bitboard = 1 << H6
+BB_A7: Bitboard = 1 << A7
+BB_B7: Bitboard = 1 << B7
+BB_C7: Bitboard = 1 << C7
+BB_D7: Bitboard = 1 << D7
+BB_E7: Bitboard = 1 << E7
+BB_F7: Bitboard = 1 << F7
+BB_G7: Bitboard = 1 << G7
+BB_H7: Bitboard = 1 << H7
+BB_A8: Bitboard = 1 << A8
+BB_B8: Bitboard = 1 << B8
+BB_C8: Bitboard = 1 << C8
+BB_D8: Bitboard = 1 << D8
+BB_E8: Bitboard = 1 << E8
+BB_F8: Bitboard = 1 << F8
+BB_G8: Bitboard = 1 << G8
+BB_H8: Bitboard = 1 << H8
+BB_SQUARES: List[Bitboard] = [1 << sq for sq in SQUARES]
+
+BB_CORNERS: Bitboard = BB_A1 | BB_H1 | BB_A8 | BB_H8
+BB_CENTER: Bitboard = BB_D4 | BB_E4 | BB_D5 | BB_E5
+
+BB_LIGHT_SQUARES: Bitboard = 0x55aa_55aa_55aa_55aa
+BB_DARK_SQUARES: Bitboard = 0xaa55_aa55_aa55_aa55
+
+BB_FILE_A: Bitboard = 0x0101_0101_0101_0101 << 0
+BB_FILE_B: Bitboard = 0x0101_0101_0101_0101 << 1
+BB_FILE_C: Bitboard = 0x0101_0101_0101_0101 << 2
+BB_FILE_D: Bitboard = 0x0101_0101_0101_0101 << 3
+BB_FILE_E: Bitboard = 0x0101_0101_0101_0101 << 4
+BB_FILE_F: Bitboard = 0x0101_0101_0101_0101 << 5
+BB_FILE_G: Bitboard = 0x0101_0101_0101_0101 << 6
+BB_FILE_H: Bitboard = 0x0101_0101_0101_0101 << 7
+BB_FILES: List[Bitboard] = [BB_FILE_A, BB_FILE_B, BB_FILE_C, BB_FILE_D, BB_FILE_E, BB_FILE_F, BB_FILE_G, BB_FILE_H]
+
+BB_RANK_1: Bitboard = 0xff << (8 * 0)
+BB_RANK_2: Bitboard = 0xff << (8 * 1)
+BB_RANK_3: Bitboard = 0xff << (8 * 2)
+BB_RANK_4: Bitboard = 0xff << (8 * 3)
+BB_RANK_5: Bitboard = 0xff << (8 * 4)
+BB_RANK_6: Bitboard = 0xff << (8 * 5)
+BB_RANK_7: Bitboard = 0xff << (8 * 6)
+BB_RANK_8: Bitboard = 0xff << (8 * 7)
+BB_RANKS: List[Bitboard] = [BB_RANK_1, BB_RANK_2, BB_RANK_3, BB_RANK_4, BB_RANK_5, BB_RANK_6, BB_RANK_7, BB_RANK_8]
+
+BB_BACKRANKS: Bitboard = BB_RANK_1 | BB_RANK_8
 
 
 def lsb(bb: Bitboard) -> int:
@@ -397,9 +513,9 @@ def _sliding_attacks(square: Square, occupied: Bitboard, deltas: Iterable[int])
 def _step_attacks(square: Square, deltas: Iterable[int]) -> Bitboard:
     return _sliding_attacks(square, BB_ALL, deltas)
 
-BB_KNIGHT_ATTACKS = [_step_attacks(sq, [17, 15, 10, 6, -17, -15, -10, -6]) for sq in SQUARES]
-BB_KING_ATTACKS = [_step_attacks(sq, [9, 8, 7, 1, -9, -8, -7, -1]) for sq in SQUARES]
-BB_PAWN_ATTACKS = [[_step_attacks(sq, deltas) for sq in SQUARES] for deltas in [[-7, -9], [7, 9]]]
+BB_KNIGHT_ATTACKS: List[Bitboard] = [_step_attacks(sq, [17, 15, 10, 6, -17, -15, -10, -6]) for sq in SQUARES]
+BB_KING_ATTACKS: List[Bitboard] = [_step_attacks(sq, [9, 8, 7, 1, -9, -8, -7, -1]) for sq in SQUARES]
+BB_PAWN_ATTACKS: List[List[Bitboard]] = [[_step_attacks(sq, deltas) for sq in SQUARES] for deltas in [[-7, -9], [7, 9]]]
 
 
 def _edges(square: Square) -> Bitboard:

From 90d81da2416bf8e3f4ffdbdd70e6105fea8607b4 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sat, 20 Apr 2024 21:04:40 -0700
Subject: [PATCH 166/250] Restore previous behavior of GameNode.comment

GameNode.comment now returns all comments as a single string with single
spaces separating the comments.

GameNode.comments (plural) returns all comments as a list of strings.
---
 chess/pgn.py | 90 +++++++++++++++++++++++++++++++---------------------
 test.py      | 43 +++++++++++++++----------
 2 files changed, 80 insertions(+), 53 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 36cac2c59..50984a64d 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -290,8 +290,8 @@ class GameNode(abc.ABC):
     """
 
     @property
-    def comment(self) -> GameNodeComment:
-        return self._comment
+    def comment(self) -> str:
+        return " ".join(self._comment)
 
     @comment.setter
     def comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
@@ -300,11 +300,19 @@ def comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
         else:
             self._comment = GameNodeComment(new_comment)
 
+    @property
+    def comments(self) -> GameNodeComment:
+        return self._comment
+
+    @comments.setter
+    def comments(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
+        self.comment = new_comment
+
     _starting_comment: GameNodeComment
 
     @property
-    def starting_comment(self) -> GameNodeComment:
-        return self._starting_comment
+    def starting_comment(self) -> str:
+        return " ".join(self._starting_comment)
 
     @starting_comment.setter
     def starting_comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
@@ -313,6 +321,14 @@ def starting_comment(self, new_comment: Union[str, list[str], GameNodeComment])
         else:
             self._starting_comment = GameNodeComment(new_comment)
 
+    @property
+    def starting_comments(self) -> GameNodeComment:
+        return self._starting_comment
+
+    @starting_comments.setter
+    def starting_comments(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
+        self._starting_comment = new_comment
+
     nags: Set[int]
 
     def __init__(self, *, comment: Union[str, list[str]] = "") -> None:
@@ -539,7 +555,7 @@ def add_line(self, moves: Iterable[chess.Move], *, comment: Union[str, list[str]
             starting_comment = ""
 
         # Merge comment and NAGs.
-        node.comment.append(comment)
+        node.comments.append(comment)
         node.nags.update(nags)
 
         return node
@@ -551,7 +567,7 @@ def eval(self) -> Optional[chess.engine.PovScore]:
 
         Complexity is `O(n)`.
         """
-        match = EVAL_REGEX.search(" ".join(self.comment))
+        match = EVAL_REGEX.search(self.comment)
         if not match:
             return None
 
@@ -577,7 +593,7 @@ def eval_depth(self) -> Optional[int]:
 
         Complexity is `O(1)`.
         """
-        match = EVAL_REGEX.search(" ".join(self.comment))
+        match = EVAL_REGEX.search(self.comment)
         return int(match.group("depth")) if match and match.group("depth") else None
 
     def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int] = None) -> None:
@@ -595,15 +611,15 @@ def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int]
                 eval = f"[%eval #{score.white().mate()}{depth_suffix}]"
 
         found = 0
-        for index in range(len(self.comment)):
-            self.comment[index], found = EVAL_REGEX.subn(_condense_affix(eval), self.comment[index], count=1)
+        for index in range(len(self.comments)):
+            self.comments[index], found = EVAL_REGEX.subn(_condense_affix(eval), self.comments[index], count=1)
             if found:
                 break
 
-        self.comment.remove_empty()
+        self.comments.remove_empty()
 
         if not found and eval:
-            self.comment.append(eval)
+            self.comments.append(eval)
 
     def arrows(self) -> List[chess.svg.Arrow]:
         """
@@ -613,7 +629,7 @@ def arrows(self) -> List[chess.svg.Arrow]:
         Returns a list of :class:`arrows <chess.svg.Arrow>`.
         """
         arrows = []
-        for match in ARROWS_REGEX.finditer(" ".join(self.comment)):
+        for match in ARROWS_REGEX.finditer(self.comment):
             for group in match.group("arrows").split(","):
                 arrows.append(chess.svg.Arrow.from_pgn(group))
 
@@ -635,10 +651,10 @@ def set_arrows(self, arrows: Iterable[Union[chess.svg.Arrow, Tuple[Square, Squar
                 pass
             (csl if arrow.tail == arrow.head else cal).append(arrow.pgn())  # type: ignore
 
-        for index in range(len(self.comment)):
-            self.comment[index] = ARROWS_REGEX.sub(_condense_affix(""), self.comment[index])
+        for index in range(len(self.comments)):
+            self.comments[index] = ARROWS_REGEX.sub(_condense_affix(""), self.comments[index])
 
-        self.comment.remove_empty()
+        self.comments.remove_empty()
 
         prefix = ""
         if csl:
@@ -647,7 +663,7 @@ def set_arrows(self, arrows: Iterable[Union[chess.svg.Arrow, Tuple[Square, Squar
             prefix += f"[%cal {','.join(cal)}]"
 
         if prefix:
-            self.comment.insert(0, prefix)
+            self.comments.insert(0, prefix)
 
     def clock(self) -> Optional[float]:
         """
@@ -657,7 +673,7 @@ def clock(self) -> Optional[float]:
         Returns the player's remaining time to the next time control after this
         move, in seconds.
         """
-        match = CLOCK_REGEX.search(" ".join(self.comment))
+        match = CLOCK_REGEX.search(self.comment)
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))
@@ -677,15 +693,15 @@ def set_clock(self, seconds: Optional[float]) -> None:
             clk = f"[%clk {hours:d}:{minutes:02d}:{seconds_part}]"
 
         found = 0
-        for index in range(len(self.comment)):
-            self.comment[index], found = CLOCK_REGEX.subn(_condense_affix(clk), self.comment[index], count=1)
+        for index in range(len(self.comments)):
+            self.comments[index], found = CLOCK_REGEX.subn(_condense_affix(clk), self.comments[index], count=1)
             if found:
                 break
 
-        self.comment.remove_empty()
+        self.comments.remove_empty()
 
         if not found and clk:
-            self.comment.append(clk)
+            self.comments.append(clk)
 
     def emt(self) -> Optional[float]:
         """
@@ -695,7 +711,7 @@ def emt(self) -> Optional[float]:
         Returns the player's elapsed move time use for the comment of this
         move, in seconds.
         """
-        match = EMT_REGEX.search(" ".join(self.comment))
+        match = EMT_REGEX.search(" ".join(self.comments))
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))
@@ -715,15 +731,15 @@ def set_emt(self, seconds: Optional[float]) -> None:
             emt = f"[%emt {hours:d}:{minutes:02d}:{seconds_part}]"
 
         found = 0
-        for index in range(len(self.comment)):
-            self.comment[index], found = EMT_REGEX.subn(_condense_affix(emt), self.comment[index], count=1)
+        for index in range(len(self.comments)):
+            self.comments[index], found = EMT_REGEX.subn(_condense_affix(emt), self.comments[index], count=1)
             if found:
                 break
 
-        self.comment.remove_empty()
+        self.comments.remove_empty()
 
         if not found and emt:
-            self.comment.append(emt)
+            self.comments.append(emt)
 
     @abc.abstractmethod
     def accept(self, visitor: BaseVisitor[ResultT]) -> ResultT:
@@ -868,7 +884,7 @@ def end(self) -> ChildNode:
 
     def _accept_node(self, parent_board: chess.Board, visitor: BaseVisitor[ResultT]) -> None:
         if self.starting_comment:
-            visitor.visit_comment(self.starting_comment)
+            visitor.visit_comment(self.starting_comments)
 
         visitor.visit_move(parent_board, self.move)
 
@@ -879,8 +895,8 @@ def _accept_node(self, parent_board: chess.Board, visitor: BaseVisitor[ResultT])
         for nag in sorted(self.nags):
             visitor.visit_nag(nag)
 
-        if self.comment:
-            visitor.visit_comment(self.comment)
+        if self.comments:
+            visitor.visit_comment(self.comments)
 
     def _accept(self, parent_board: chess.Board, visitor: BaseVisitor[ResultT], *, sidelines: bool = True) -> None:
         stack = [_AcceptFrame(self, sidelines=sidelines)]
@@ -1011,8 +1027,8 @@ def accept(self, visitor: BaseVisitor[ResultT]) -> ResultT:
                 board = self.board()
                 visitor.visit_board(board)
 
-                if self.comment:
-                    visitor.visit_comment(self.comment)
+                if self.comments:
+                    visitor.visit_comment(self.comments)
 
                 if self.variations:
                     self.variations[0]._accept(board, visitor)
@@ -1347,14 +1363,14 @@ def visit_comment(self, comment: GameNodeComment) -> None:
             # Add as a comment for the current node if in the middle of
             # a variation. Add as a comment for the game if the comment
             # starts before any move.
-            new_comment = self.variation_stack[-1].comment + comment
-            new_comment.remove_empty()
-            self.variation_stack[-1].comment = new_comment
+            new_comments = self.variation_stack[-1].comments + comment
+            new_comments.remove_empty()
+            self.variation_stack[-1].comments = new_comments
         else:
             # Otherwise, it is a starting comment.
-            new_comment = self.starting_comment + comment
-            new_comment.remove_empty()
-            self.starting_comment = new_comment
+            new_comments = self.starting_comment + comment
+            new_comments.remove_empty()
+            self.starting_comment = new_comments
 
     def visit_move(self, board: chess.Board, move: chess.Move) -> None:
         self.variation_stack[-1] = self.variation_stack[-1].add_variation(move)
diff --git a/test.py b/test.py
index ee770de0f..aa89cd2c5 100755
--- a/test.py
+++ b/test.py
@@ -2220,19 +2220,24 @@ def test_read_game_with_multicomment_move(self):
         game = chess.pgn.read_game(pgn)
         first_move = game.variation(0)
         self.assertEqual(first_move.comment, "A common opening")
+        self.assertEqual(first_move.comments, "A common opening")
+        self.assertEqual(first_move.comments, ["A common opening"])
         second_move = first_move.variation(0)
-        self.assertEqual(second_move.comment, ["A common response", "An uncommon comment"])
-        second_move.comment.pop()
-        self.assertEqual(second_move.comment, ["A common response"])
+        self.assertEqual(second_move.comments, ["A common response", "An uncommon comment"])
+        second_move.comments.pop()
+        self.assertEqual(second_move.comments, ["A common response"])
+        self.assertEqual(second_move.comments, "A common response")
         self.assertEqual(second_move.comment, "A common response")
-        second_move.comment.append("A replaced comment")
+        second_move.comments.append("A replaced comment")
         multiple_comments = ["A common response", "A replaced comment"]
-        self.assertEqual(second_move.comment, multiple_comments)
-        for move_comment, test_comment in zip(second_move.comment, multiple_comments):
+        self.assertEqual(second_move.comments, multiple_comments)
+        for move_comment, test_comment in zip(second_move.comments, multiple_comments):
             self.assertEqual(move_comment, test_comment)
-        self.assertEqual(list(second_move.comment), multiple_comments)
-        second_move.comment.pop(0)
-        self.assertEqual(second_move.comment, ["A replaced comment"])
+        self.assertEqual(list(second_move.comments), multiple_comments)
+        self.assertEqual(second_move.comment, " ".join(multiple_comments))
+        second_move.comments.pop(0)
+        self.assertEqual(second_move.comments, ["A replaced comment"])
+        self.assertEqual(second_move.comments, "A replaced comment")
         self.assertEqual(second_move.comment, "A replaced comment")
 
     def test_comment_at_eol(self):
@@ -2845,22 +2850,24 @@ def test_annotations(self):
         self.assertTrue(game.clock() is None)
         clock = 12345
         game.set_clock(clock)
-        self.assertEqual(game.comment, ["foo [%bar] baz", "[%clk 3:25:45]"])
+        self.assertEqual(game.comment, "foo [%bar] baz [%clk 3:25:45]")
+        self.assertEqual(game.comments, ["foo [%bar] baz", "[%clk 3:25:45]"])
         self.assertEqual(game.clock(), clock)
 
         self.assertTrue(game.eval() is None)
         game.set_eval(chess.engine.PovScore(chess.engine.Cp(-80), chess.WHITE))
-        self.assertEqual(game.comment, ["foo [%bar] baz", "[%clk 3:25:45]", "[%eval -0.80]"])
+        self.assertEqual(game.comments, ["foo [%bar] baz", "[%clk 3:25:45]", "[%eval -0.80]"])
         self.assertEqual(game.eval().white().score(), -80)
         self.assertEqual(game.eval_depth(), None)
         game.set_eval(chess.engine.PovScore(chess.engine.Mate(1), chess.WHITE), 5)
-        self.assertEqual(game.comment, ["foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]"])
+        self.assertEqual(game.comments, ["foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]"])
         self.assertEqual(game.eval().white().mate(), 1)
         self.assertEqual(game.eval_depth(), 5)
 
         self.assertEqual(game.arrows(), [])
         game.set_arrows([(chess.A1, chess.A1), chess.svg.Arrow(chess.A1, chess.H1, color="red"), chess.svg.Arrow(chess.B1, chess.B8)])
-        self.assertEqual(game.comment, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]"])
+        self.assertEqual(game.comments, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]"])
+        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45] [%eval #1,5]")
         arrows = game.arrows()
         self.assertEqual(len(arrows), 3)
         self.assertEqual(arrows[0].color, "green")
@@ -2870,17 +2877,21 @@ def test_annotations(self):
         self.assertTrue(game.emt() is None)
         emt = 321
         game.set_emt(emt)
-        self.assertEqual(game.comment, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]", "[%emt 0:05:21]"])
+        self.assertEqual(game.comments, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]", "[%emt 0:05:21]"])
+        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45] [%eval #1,5] [%emt 0:05:21]")
         self.assertEqual(game.emt(), emt)
 
         game.set_eval(None)
-        self.assertEqual(game.comment, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%emt 0:05:21]"])
+        self.assertEqual(game.comments, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%emt 0:05:21]"])
+        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45] [%emt 0:05:21]")
 
         game.set_emt(None)
-        self.assertEqual(game.comment, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]"])
+        self.assertEqual(game.comments, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]"])
+        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45]")
 
         game.set_clock(None)
         game.set_arrows([])
+        self.assertEqual(game.comments, "foo [%bar] baz")
         self.assertEqual(game.comment, "foo [%bar] baz")
 
     def test_eval(self):

From 2761d7c2b129bb5c88b3ff59c2dbbc792863b172 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sat, 20 Apr 2024 21:16:52 -0700
Subject: [PATCH 167/250] Fix typing errors

---
 chess/pgn.py | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 50984a64d..c70c47bc2 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -306,7 +306,10 @@ def comments(self) -> GameNodeComment:
 
     @comments.setter
     def comments(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        self.comment = new_comment
+        if isinstance(new_comment, GameNodeComment):
+            self._comment = new_comment
+        else:
+            self._comment = GameNodeComment(new_comment)
 
     _starting_comment: GameNodeComment
 
@@ -327,7 +330,10 @@ def starting_comments(self) -> GameNodeComment:
 
     @starting_comments.setter
     def starting_comments(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        self._starting_comment = new_comment
+        if isinstance(new_comment, GameNodeComment):
+            self._starting_comment = new_comment
+        else:
+            self._starting_comment = GameNodeComment(new_comment)
 
     nags: Set[int]
 
@@ -335,11 +341,11 @@ def __init__(self, *, comment: Union[str, list[str]] = "") -> None:
         self.parent = None
         self.move = None
         self.variations = []
-        self.comment = GameNodeComment(comment)
+        self.comments = GameNodeComment(comment)
 
         # Deprecated: These should be properties of ChildNode, but need to
         # remain here for backwards compatibility.
-        self.starting_comment = GameNodeComment()
+        self.starting_comments = GameNodeComment()
         self.nags = set()
 
     @abc.abstractmethod
@@ -804,8 +810,8 @@ class ChildNode(GameNode):
     """
 
     @property
-    def starting_comment(self) -> GameNodeComment:
-        return self._starting_comment
+    def starting_comment(self) -> str:
+        return " ".join(self._starting_comment)
 
     @starting_comment.setter
     def starting_comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
@@ -827,7 +833,7 @@ def __init__(self, parent: GameNode, move: chess.Move, *, comment: Union[str, li
         self.parent.variations.append(self)
 
         self.nags.update(nags)
-        self.starting_comment = GameNodeComment(starting_comment)
+        self.starting_comments = GameNodeComment(starting_comment)
 
     def board(self) -> chess.Board:
         stack: List[chess.Move] = []
@@ -1374,7 +1380,7 @@ def visit_comment(self, comment: GameNodeComment) -> None:
 
     def visit_move(self, board: chess.Board, move: chess.Move) -> None:
         self.variation_stack[-1] = self.variation_stack[-1].add_variation(move)
-        self.variation_stack[-1].starting_comment = self.starting_comment
+        self.variation_stack[-1].starting_comments = self.starting_comment
         self.starting_comment = GameNodeComment()
         self.in_variation = True
 

From f0baba73ba034d48cb734bf4c0848417396a633f Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sat, 20 Apr 2024 21:22:56 -0700
Subject: [PATCH 168/250] Consolidate repeated logic

---
 chess/pgn.py | 29 +++++++----------------------
 1 file changed, 7 insertions(+), 22 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index c70c47bc2..6ff13fd7e 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -191,9 +191,9 @@ class GameNodeComment:
     A class that can hold one or more comments for a GameNode.
     """
 
-    def __init__(self, comment: Union[str, list[str]] = ""):
+    def __init__(self, comment: Union[str, list[str], GameNodeComment] = ""):
         """Create a new comment."""
-        self.set(comment)
+        self.set(comment._comments if isinstance(comment,GameNodeComment) else comment)
 
     def set(self, new_comment: Union[str, list[str]]) -> None:
         """Replace the comment with a new comment or a list of comments."""
@@ -295,10 +295,7 @@ def comment(self) -> str:
 
     @comment.setter
     def comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        if isinstance(new_comment, GameNodeComment):
-            self._comment = new_comment
-        else:
-            self._comment = GameNodeComment(new_comment)
+        self._comment = GameNodeComment(new_comment)
 
     @property
     def comments(self) -> GameNodeComment:
@@ -306,10 +303,7 @@ def comments(self) -> GameNodeComment:
 
     @comments.setter
     def comments(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        if isinstance(new_comment, GameNodeComment):
-            self._comment = new_comment
-        else:
-            self._comment = GameNodeComment(new_comment)
+        self._comment = GameNodeComment(new_comment)
 
     _starting_comment: GameNodeComment
 
@@ -319,10 +313,7 @@ def starting_comment(self) -> str:
 
     @starting_comment.setter
     def starting_comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        if isinstance(new_comment, GameNodeComment):
-            self._starting_comment = new_comment
-        else:
-            self._starting_comment = GameNodeComment(new_comment)
+        self._starting_comment = GameNodeComment(new_comment)
 
     @property
     def starting_comments(self) -> GameNodeComment:
@@ -330,10 +321,7 @@ def starting_comments(self) -> GameNodeComment:
 
     @starting_comments.setter
     def starting_comments(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        if isinstance(new_comment, GameNodeComment):
-            self._starting_comment = new_comment
-        else:
-            self._starting_comment = GameNodeComment(new_comment)
+        self._starting_comment = GameNodeComment(new_comment)
 
     nags: Set[int]
 
@@ -815,10 +803,7 @@ def starting_comment(self) -> str:
 
     @starting_comment.setter
     def starting_comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        if isinstance(new_comment, GameNodeComment):
-            self._starting_comment = new_comment
-        else:
-            self._starting_comment = GameNodeComment(new_comment)
+        self._starting_comment = GameNodeComment(new_comment)
 
     nags: Set[int]
     """

From f840f8e58e635d89ba810ffa08cb0f81d4925f79 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 21 Apr 2024 19:27:56 -0700
Subject: [PATCH 169/250] Revert unneeded code change

---
 chess/pgn.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 6ff13fd7e..e462a0750 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -705,7 +705,7 @@ def emt(self) -> Optional[float]:
         Returns the player's elapsed move time use for the comment of this
         move, in seconds.
         """
-        match = EMT_REGEX.search(" ".join(self.comments))
+        match = EMT_REGEX.search(self.comment)
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))

From 716a0b9459480b852b5169a0f1b0b3dbecd3be31 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 4 May 2024 17:44:20 +0200
Subject: [PATCH 170/250] Require that EPD opcodes start with letter (fixes
 #1080)

---
 chess/__init__.py | 16 +++++++++++++---
 test.py           |  5 +++++
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index f9a9ab7f5..bed9eec5d 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -2739,9 +2739,7 @@ def _epd_operations(self, operations: Mapping[str, Union[None, str, int, float,
         first_op = True
 
         for opcode, operand in operations.items():
-            assert opcode != "-", "dash (-) is not a valid epd opcode"
-            for blacklisted in [" ", "\n", "\t", "\r"]:
-                assert blacklisted not in opcode, f"invalid character {blacklisted!r} in epd opcode: {opcode!r}"
+            self._validate_epd_opcode(opcode)
 
             if not first_op:
                 epd.append(" ")
@@ -2819,6 +2817,17 @@ def epd(self, *, shredder: bool = False, en_passant: EnPassantSpec = "legal", pr
 
         return " ".join(epd)
 
+    def _validate_epd_opcode(self, opcode: str) -> None:
+        if not opcode:
+            raise ValueError("empty string is not a valid epd opcode")
+        if opcode == "-":
+            raise ValueError("dash (-) is not a valid epd opcode")
+        if not opcode[0].isalpha():
+            raise ValueError(f"expected epd opcode to start with a letter, got: {opcode!r}")
+        for blacklisted in [" ", "\n", "\t", "\r"]:
+            if blacklisted in opcode:
+                raise ValueError(f"invalid character {blacklisted!r} in epd opcode: {opcode!r}")
+
     def _parse_epd_ops(self: BoardT, operation_part: str, make_board: Callable[[], BoardT]) -> Dict[str, Union[None, str, int, float, Move, List[Move]]]:
         operations: Dict[str, Union[None, str, int, float, Move, List[Move]]] = {}
         state = "opcode"
@@ -2832,6 +2841,7 @@ def _parse_epd_ops(self: BoardT, operation_part: str, make_board: Callable[[], B
                     if opcode == "-":
                         opcode = ""
                     elif opcode:
+                        self._validate_epd_opcode(opcode)
                         state = "after_opcode"
                 elif ch is None or ch == ";":
                     if opcode == "-":
diff --git a/test.py b/test.py
index 8dbc95a25..4ca3be6c2 100755
--- a/test.py
+++ b/test.py
@@ -1143,6 +1143,11 @@ def test_eret_epd(self):
         self.assertEqual(ops["id"], "ERET 001 - Entlastung")
         self.assertEqual(ops["bm"], [chess.Move.from_uci("f1f4")])
 
+    def test_set_fen_as_epd(self):
+        board = chess.Board()
+        with self.assertRaises(ValueError):
+            board.set_epd(board.fen())  # Move numbers are not valid opcodes
+
     def test_null_moves(self):
         self.assertEqual(str(chess.Move.null()), "0000")
         self.assertEqual(chess.Move.null().uci(), "0000")

From df714e39a559135c51228cca6a7cb5c716756ee3 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 4 May 2024 17:59:31 +0200
Subject: [PATCH 171/250] Fixup invalid EPDs in chess960.perft file

---
 examples/perft/chess960.perft | 1920 ++++++++++++++++-----------------
 1 file changed, 960 insertions(+), 960 deletions(-)

diff --git a/examples/perft/chess960.perft b/examples/perft/chess960.perft
index 76be26eed..12276f256 100644
--- a/examples/perft/chess960.perft
+++ b/examples/perft/chess960.perft
@@ -2,7 +2,7 @@
 # https://github.com/AndyGrant/Ethereal/blob/master/src/perft/fischer.epd
 
 id 0
-epd bqnb1rkr/pp3ppp/3ppn2/2p5/5P2/P2P4/NPP1P1PP/BQ1BNRKR w HFhf - 2 9
+epd bqnb1rkr/pp3ppp/3ppn2/2p5/5P2/P2P4/NPP1P1PP/BQ1BNRKR w HFhf -
 perft 1 21
 perft 2 528
 perft 3 12189
@@ -11,7 +11,7 @@ perft 5 8146062
 perft 6 227689589
 
 id 1
-epd 2nnrbkr/p1qppppp/8/1ppb4/6PP/3PP3/PPP2P2/BQNNRBKR w HEhe - 1 9
+epd 2nnrbkr/p1qppppp/8/1ppb4/6PP/3PP3/PPP2P2/BQNNRBKR w HEhe -
 perft 1 21
 perft 2 807
 perft 3 18002
@@ -20,7 +20,7 @@ perft 5 16253601
 perft 6 590751109
 
 id 2
-epd b1q1rrkb/pppppppp/3nn3/8/P7/1PPP4/4PPPP/BQNNRKRB w GE - 1 9
+epd b1q1rrkb/pppppppp/3nn3/8/P7/1PPP4/4PPPP/BQNNRKRB w GE -
 perft 1 20
 perft 2 479
 perft 3 10471
@@ -29,7 +29,7 @@ perft 5 6417013
 perft 6 177654692
 
 id 3
-epd qbbnnrkr/2pp2pp/p7/1p2pp2/8/P3PP2/1PPP1KPP/QBBNNR1R w hf - 0 9
+epd qbbnnrkr/2pp2pp/p7/1p2pp2/8/P3PP2/1PPP1KPP/QBBNNR1R w hf -
 perft 1 22
 perft 2 593
 perft 3 13440
@@ -38,7 +38,7 @@ perft 5 9183776
 perft 6 274103539
 
 id 4
-epd 1nbbnrkr/p1p1ppp1/3p4/1p3P1p/3Pq2P/8/PPP1P1P1/QNBBNRKR w HFhf - 0 9
+epd 1nbbnrkr/p1p1ppp1/3p4/1p3P1p/3Pq2P/8/PPP1P1P1/QNBBNRKR w HFhf -
 perft 1 28
 perft 2 1120
 perft 3 31058
@@ -47,7 +47,7 @@ perft 5 34030312
 perft 6 1250970898
 
 id 5
-epd qnbnr1kr/ppp1b1pp/4p3/3p1p2/8/2NPP3/PPP1BPPP/QNB1R1KR w HEhe - 1 9
+epd qnbnr1kr/ppp1b1pp/4p3/3p1p2/8/2NPP3/PPP1BPPP/QNB1R1KR w HEhe -
 perft 1 29
 perft 2 899
 perft 3 26578
@@ -56,7 +56,7 @@ perft 5 24851983
 perft 6 775718317
 
 id 6
-epd q1bnrkr1/ppppp2p/2n2p2/4b1p1/2NP4/8/PPP1PPPP/QNB1RRKB w ge - 1 9
+epd q1bnrkr1/ppppp2p/2n2p2/4b1p1/2NP4/8/PPP1PPPP/QNB1RRKB w ge -
 perft 1 30
 perft 2 860
 perft 3 24566
@@ -65,7 +65,7 @@ perft 5 21093346
 perft 6 649209803
 
 id 7
-epd qbn1brkr/ppp1p1p1/2n4p/3p1p2/P7/6PP/QPPPPP2/1BNNBRKR w HFhf - 0 9
+epd qbn1brkr/ppp1p1p1/2n4p/3p1p2/P7/6PP/QPPPPP2/1BNNBRKR w HFhf -
 perft 1 25
 perft 2 635
 perft 3 17054
@@ -74,7 +74,7 @@ perft 5 13203304
 perft 6 377184252
 
 id 8
-epd qnnbbrkr/1p2ppp1/2pp3p/p7/1P5P/2NP4/P1P1PPP1/Q1NBBRKR w HFhf - 0 9
+epd qnnbbrkr/1p2ppp1/2pp3p/p7/1P5P/2NP4/P1P1PPP1/Q1NBBRKR w HFhf -
 perft 1 24
 perft 2 572
 perft 3 15243
@@ -83,7 +83,7 @@ perft 5 11110203
 perft 6 293989890
 
 id 9
-epd qn1rbbkr/ppp2p1p/1n1pp1p1/8/3P4/P6P/1PP1PPPK/QNNRBB1R w hd - 2 9
+epd qn1rbbkr/ppp2p1p/1n1pp1p1/8/3P4/P6P/1PP1PPPK/QNNRBB1R w hd -
 perft 1 28
 perft 2 811
 perft 3 23175
@@ -92,7 +92,7 @@ perft 5 19836606
 perft 6 594527992
 
 id 10
-epd qnr1bkrb/pppp2pp/3np3/5p2/8/P2P2P1/NPP1PP1P/QN1RBKRB w GDg - 3 9
+epd qnr1bkrb/pppp2pp/3np3/5p2/8/P2P2P1/NPP1PP1P/QN1RBKRB w GDg -
 perft 1 33
 perft 2 823
 perft 3 26895
@@ -101,7 +101,7 @@ perft 5 23114629
 perft 6 646390782
 
 id 11
-epd qb1nrkbr/1pppp1p1/1n3p2/p1B4p/8/3P1P1P/PPP1P1P1/QBNNRK1R w HEhe - 0 9
+epd qb1nrkbr/1pppp1p1/1n3p2/p1B4p/8/3P1P1P/PPP1P1P1/QBNNRK1R w HEhe -
 perft 1 31
 perft 2 855
 perft 3 25620
@@ -110,7 +110,7 @@ perft 5 21796206
 perft 6 651054626
 
 id 12
-epd qnnbrk1r/1p1ppbpp/2p5/p4p2/2NP3P/8/PPP1PPP1/Q1NBRKBR w HEhe - 0 9
+epd qnnbrk1r/1p1ppbpp/2p5/p4p2/2NP3P/8/PPP1PPP1/Q1NBRKBR w HEhe -
 perft 1 26
 perft 2 790
 perft 3 21238
@@ -119,7 +119,7 @@ perft 5 17819770
 perft 6 544866674
 
 id 13
-epd 1qnrkbbr/1pppppp1/p1n4p/8/P7/1P1N1P2/2PPP1PP/QN1RKBBR w HDhd - 0 9
+epd 1qnrkbbr/1pppppp1/p1n4p/8/P7/1P1N1P2/2PPP1PP/QN1RKBBR w HDhd -
 perft 1 37
 perft 2 883
 perft 3 32187
@@ -128,7 +128,7 @@ perft 5 29370838
 perft 6 783201510
 
 id 14
-epd qn1rkrbb/pp1p1ppp/2p1p3/3n4/4P2P/2NP4/PPP2PP1/Q1NRKRBB w FDfd - 1 9
+epd qn1rkrbb/pp1p1ppp/2p1p3/3n4/4P2P/2NP4/PPP2PP1/Q1NRKRBB w FDfd -
 perft 1 24
 perft 2 585
 perft 3 14769
@@ -137,7 +137,7 @@ perft 5 9482310
 perft 6 233468620
 
 id 15
-epd bb1qnrkr/pp1p1pp1/1np1p3/4N2p/8/1P4P1/P1PPPP1P/BBNQ1RKR w HFhf - 0 9
+epd bb1qnrkr/pp1p1pp1/1np1p3/4N2p/8/1P4P1/P1PPPP1P/BBNQ1RKR w HFhf -
 perft 1 29
 perft 2 864
 perft 3 25747
@@ -146,7 +146,7 @@ perft 5 24219627
 perft 6 776836316
 
 id 16
-epd bnqbnr1r/p1p1ppkp/3p4/1p4p1/P7/3NP2P/1PPP1PP1/BNQB1RKR w HF - 0 9
+epd bnqbnr1r/p1p1ppkp/3p4/1p4p1/P7/3NP2P/1PPP1PP1/BNQB1RKR w HF -
 perft 1 26
 perft 2 889
 perft 3 24353
@@ -155,7 +155,7 @@ perft 5 23701014
 perft 6 809194268
 
 id 17
-epd bnqnrbkr/1pp2pp1/p7/3pP2p/4P1P1/8/PPPP3P/BNQNRBKR w HEhe d6 0 9
+epd bnqnrbkr/1pp2pp1/p7/3pP2p/4P1P1/8/PPPP3P/BNQNRBKR w HEhe d6
 perft 1 31
 perft 2 984
 perft 3 28677
@@ -164,7 +164,7 @@ perft 5 29032175
 perft 6 1008880643
 
 id 18
-epd b1qnrrkb/ppp1pp1p/n2p1Pp1/8/8/P7/1PPPP1PP/BNQNRKRB w GE - 0 9
+epd b1qnrrkb/ppp1pp1p/n2p1Pp1/8/8/P7/1PPPP1PP/BNQNRKRB w GE -
 perft 1 20
 perft 2 484
 perft 3 10532
@@ -173,7 +173,7 @@ perft 5 6718715
 perft 6 193594729
 
 id 19
-epd n1bqnrkr/pp1ppp1p/2p5/6p1/2P2b2/PN6/1PNPPPPP/1BBQ1RKR w HFhf - 2 9
+epd n1bqnrkr/pp1ppp1p/2p5/6p1/2P2b2/PN6/1PNPPPPP/1BBQ1RKR w HFhf -
 perft 1 23
 perft 2 732
 perft 3 17746
@@ -182,7 +182,7 @@ perft 5 14481581
 perft 6 457140569
 
 id 20
-epd n1bb1rkr/qpnppppp/2p5/p7/P1P5/5P2/1P1PPRPP/NQBBN1KR w Hhf - 1 9
+epd n1bb1rkr/qpnppppp/2p5/p7/P1P5/5P2/1P1PPRPP/NQBBN1KR w Hhf -
 perft 1 27
 perft 2 697
 perft 3 18724
@@ -191,7 +191,7 @@ perft 5 14226907
 perft 6 400942568
 
 id 21
-epd nqb1rbkr/pppppp1p/4n3/6p1/4P3/1NP4P/PP1P1PP1/1QBNRBKR w HEhe - 1 9
+epd nqb1rbkr/pppppp1p/4n3/6p1/4P3/1NP4P/PP1P1PP1/1QBNRBKR w HEhe -
 perft 1 28
 perft 2 641
 perft 3 18811
@@ -200,7 +200,7 @@ perft 5 13780398
 perft 6 354122358
 
 id 22
-epd n1bnrrkb/pp1pp2p/2p2p2/6p1/5B2/3P4/PPP1PPPP/NQ1NRKRB w GE - 2 9
+epd n1bnrrkb/pp1pp2p/2p2p2/6p1/5B2/3P4/PPP1PPPP/NQ1NRKRB w GE -
 perft 1 28
 perft 2 606
 perft 3 16883
@@ -209,7 +209,7 @@ perft 5 10815324
 perft 6 254026570
 
 id 23
-epd nbqnbrkr/2ppp1p1/pp3p1p/8/4N2P/1N6/PPPPPPP1/1BQ1BRKR w HFhf - 0 9
+epd nbqnbrkr/2ppp1p1/pp3p1p/8/4N2P/1N6/PPPPPPP1/1BQ1BRKR w HFhf -
 perft 1 26
 perft 2 626
 perft 3 17268
@@ -218,7 +218,7 @@ perft 5 12719546
 perft 6 339132046
 
 id 24
-epd nq1bbrkr/pp2nppp/2pp4/4p3/1PP1P3/1B6/P2P1PPP/NQN1BRKR w HFhf - 2 9
+epd nq1bbrkr/pp2nppp/2pp4/4p3/1PP1P3/1B6/P2P1PPP/NQN1BRKR w HFhf -
 perft 1 21
 perft 2 504
 perft 3 11812
@@ -227,7 +227,7 @@ perft 5 7697880
 perft 6 207028745
 
 id 25
-epd nqnrb1kr/2pp1ppp/1p1bp3/p1B5/5P2/3N4/PPPPP1PP/NQ1R1BKR w HDhd - 0 9
+epd nqnrb1kr/2pp1ppp/1p1bp3/p1B5/5P2/3N4/PPPPP1PP/NQ1R1BKR w HDhd -
 perft 1 30
 perft 2 672
 perft 3 19307
@@ -236,7 +236,7 @@ perft 5 13454573
 perft 6 345445468
 
 id 26
-epd nqn2krb/p1prpppp/1pbp4/7P/5P2/8/PPPPPKP1/NQNRB1RB w g - 3 9
+epd nqn2krb/p1prpppp/1pbp4/7P/5P2/8/PPPPPKP1/NQNRB1RB w g -
 perft 1 21
 perft 2 461
 perft 3 10608
@@ -245,7 +245,7 @@ perft 5 6194124
 perft 6 152861936
 
 id 27
-epd nb1n1kbr/ppp1rppp/3pq3/P3p3/8/4P3/1PPPRPPP/NBQN1KBR w Hh - 1 9
+epd nb1n1kbr/ppp1rppp/3pq3/P3p3/8/4P3/1PPPRPPP/NBQN1KBR w Hh -
 perft 1 19
 perft 2 566
 perft 3 11786
@@ -254,7 +254,7 @@ perft 5 8047916
 perft 6 249171636
 
 id 28
-epd nqnbrkbr/1ppppp1p/p7/6p1/6P1/P6P/1PPPPP2/NQNBRKBR w HEhe - 1 9
+epd nqnbrkbr/1ppppp1p/p7/6p1/6P1/P6P/1PPPPP2/NQNBRKBR w HEhe -
 perft 1 20
 perft 2 382
 perft 3 8694
@@ -263,7 +263,7 @@ perft 5 4708975
 perft 6 112278808
 
 id 29
-epd nq1rkb1r/pp1pp1pp/1n2bp1B/2p5/8/5P1P/PPPPP1P1/NQNRKB1R w HDhd - 2 9
+epd nq1rkb1r/pp1pp1pp/1n2bp1B/2p5/8/5P1P/PPPPP1P1/NQNRKB1R w HDhd -
 perft 1 24
 perft 2 809
 perft 3 20090
@@ -272,7 +272,7 @@ perft 5 17647882
 perft 6 593457788
 
 id 30
-epd nqnrkrb1/pppppp2/7p/4b1p1/8/PN1NP3/1PPP1PPP/1Q1RKRBB w FDfd - 1 9
+epd nqnrkrb1/pppppp2/7p/4b1p1/8/PN1NP3/1PPP1PPP/1Q1RKRBB w FDfd -
 perft 1 26
 perft 2 683
 perft 3 18102
@@ -281,7 +281,7 @@ perft 5 13055173
 perft 6 352398011
 
 id 31
-epd bb1nqrkr/1pp1ppp1/pn5p/3p4/8/P2NNP2/1PPPP1PP/BB2QRKR w HFhf - 0 9
+epd bb1nqrkr/1pp1ppp1/pn5p/3p4/8/P2NNP2/1PPPP1PP/BB2QRKR w HFhf -
 perft 1 29
 perft 2 695
 perft 3 21193
@@ -290,7 +290,7 @@ perft 5 17454857
 perft 6 483785639
 
 id 32
-epd bnn1qrkr/pp1ppp1p/2p5/b3Q1p1/8/5P1P/PPPPP1P1/BNNB1RKR w HFhf - 2 9
+epd bnn1qrkr/pp1ppp1p/2p5/b3Q1p1/8/5P1P/PPPPP1P1/BNNB1RKR w HFhf -
 perft 1 44
 perft 2 920
 perft 3 35830
@@ -299,7 +299,7 @@ perft 5 29742670
 perft 6 702867204
 
 id 33
-epd bnnqrbkr/pp1p2p1/2p1p2p/5p2/1P5P/1R6/P1PPPPP1/BNNQRBK1 w Ehe - 0 9
+epd bnnqrbkr/pp1p2p1/2p1p2p/5p2/1P5P/1R6/P1PPPPP1/BNNQRBK1 w Ehe -
 perft 1 33
 perft 2 1022
 perft 3 32724
@@ -308,7 +308,7 @@ perft 5 32898113
 perft 6 1047360456
 
 id 34
-epd b1nqrkrb/2pppppp/p7/1P6/1n6/P4P2/1P1PP1PP/BNNQRKRB w GEge - 0 9
+epd b1nqrkrb/2pppppp/p7/1P6/1n6/P4P2/1P1PP1PP/BNNQRKRB w GEge -
 perft 1 23
 perft 2 638
 perft 3 15744
@@ -317,7 +317,7 @@ perft 5 11735969
 perft 6 344211589
 
 id 35
-epd n1bnqrkr/3ppppp/1p6/pNp1b3/2P3P1/8/PP1PPP1P/NBB1QRKR w HFhf - 1 9
+epd n1bnqrkr/3ppppp/1p6/pNp1b3/2P3P1/8/PP1PPP1P/NBB1QRKR w HFhf -
 perft 1 29
 perft 2 728
 perft 3 20768
@@ -326,7 +326,7 @@ perft 5 15621236
 perft 6 415766465
 
 id 36
-epd n2bqrkr/p1p1pppp/1pn5/3p1b2/P6P/1NP5/1P1PPPP1/1NBBQRKR w HFhf - 3 9
+epd n2bqrkr/p1p1pppp/1pn5/3p1b2/P6P/1NP5/1P1PPPP1/1NBBQRKR w HFhf -
 perft 1 20
 perft 2 533
 perft 3 12152
@@ -335,7 +335,7 @@ perft 5 8088751
 perft 6 223068417
 
 id 37
-epd nnbqrbkr/1pp1p1p1/p2p4/5p1p/2P1P3/N7/PPQP1PPP/N1B1RBKR w HEhe - 0 9
+epd nnbqrbkr/1pp1p1p1/p2p4/5p1p/2P1P3/N7/PPQP1PPP/N1B1RBKR w HEhe -
 perft 1 27
 perft 2 619
 perft 3 18098
@@ -344,7 +344,7 @@ perft 5 13755384
 perft 6 357222394
 
 id 38
-epd nnbqrkr1/pp1pp2p/2p2b2/5pp1/1P5P/4P1P1/P1PP1P2/NNBQRKRB w GEge - 1 9
+epd nnbqrkr1/pp1pp2p/2p2b2/5pp1/1P5P/4P1P1/P1PP1P2/NNBQRKRB w GEge -
 perft 1 32
 perft 2 1046
 perft 3 33721
@@ -353,7 +353,7 @@ perft 5 36218182
 perft 6 1202830851
 
 id 39
-epd nb1qbrkr/p1pppp2/1p1n2pp/8/1P6/2PN3P/P2PPPP1/NB1QBRKR w HFhf - 0 9
+epd nb1qbrkr/p1pppp2/1p1n2pp/8/1P6/2PN3P/P2PPPP1/NB1QBRKR w HFhf -
 perft 1 25
 perft 2 521
 perft 3 14021
@@ -362,7 +362,7 @@ perft 5 8697700
 perft 6 201455191
 
 id 40
-epd nnq1brkr/pp1pppp1/8/2p4P/8/5K2/PPPbPP1P/NNQBBR1R w hf - 0 9
+epd nnq1brkr/pp1pppp1/8/2p4P/8/5K2/PPPbPP1P/NNQBBR1R w hf -
 perft 1 23
 perft 2 724
 perft 3 18263
@@ -371,7 +371,7 @@ perft 5 15338230
 perft 6 484638597
 
 id 41
-epd nnqrbb1r/pppppk2/5pp1/7p/1P6/3P2PP/P1P1PP2/NNQRBBKR w HD - 0 9
+epd nnqrbb1r/pppppk2/5pp1/7p/1P6/3P2PP/P1P1PP2/NNQRBBKR w HD -
 perft 1 30
 perft 2 717
 perft 3 21945
@@ -380,7 +380,7 @@ perft 5 17166700
 perft 6 450069742
 
 id 42
-epd nnqr1krb/p1p1pppp/2bp4/8/1p1P4/4P3/PPP2PPP/NNQRBKRB w GDgd - 0 9
+epd nnqr1krb/p1p1pppp/2bp4/8/1p1P4/4P3/PPP2PPP/NNQRBKRB w GDgd -
 perft 1 25
 perft 2 873
 perft 3 20796
@@ -389,7 +389,7 @@ perft 5 18162741
 perft 6 641708630
 
 id 43
-epd nbnqrkbr/p2ppp2/1p4p1/2p4p/3P3P/3N4/PPP1PPPR/NB1QRKB1 w Ehe - 0 9
+epd nbnqrkbr/p2ppp2/1p4p1/2p4p/3P3P/3N4/PPP1PPPR/NB1QRKB1 w Ehe -
 perft 1 24
 perft 2 589
 perft 3 15190
@@ -398,7 +398,7 @@ perft 5 10630667
 perft 6 279474189
 
 id 44
-epd n1qbrkbr/p1ppp2p/2n2pp1/1p6/1P6/2P3P1/P2PPP1P/NNQBRKBR w HEhe - 0 9
+epd n1qbrkbr/p1ppp2p/2n2pp1/1p6/1P6/2P3P1/P2PPP1P/NNQBRKBR w HEhe -
 perft 1 22
 perft 2 592
 perft 3 14269
@@ -407,7 +407,7 @@ perft 5 10356818
 perft 6 301583306
 
 id 45
-epd 2qrkbbr/ppn1pppp/n1p5/3p4/5P2/P1PP4/1P2P1PP/NNQRKBBR w HDhd - 1 9
+epd 2qrkbbr/ppn1pppp/n1p5/3p4/5P2/P1PP4/1P2P1PP/NNQRKBBR w HDhd -
 perft 1 27
 perft 2 750
 perft 3 20584
@@ -416,7 +416,7 @@ perft 5 16819085
 perft 6 516796736
 
 id 46
-epd 1nqr1rbb/pppkp1pp/1n3p2/3p4/1P6/5P1P/P1PPPKP1/NNQR1RBB w - - 1 9
+epd 1nqr1rbb/pppkp1pp/1n3p2/3p4/1P6/5P1P/P1PPPKP1/NNQR1RBB w - -
 perft 1 24
 perft 2 623
 perft 3 15921
@@ -425,7 +425,7 @@ perft 5 11594634
 perft 6 322745925
 
 id 47
-epd bbn1rqkr/pp1pp2p/4npp1/2p5/1P6/2BPP3/P1P2PPP/1BNNRQKR w HEhe - 0 9
+epd bbn1rqkr/pp1pp2p/4npp1/2p5/1P6/2BPP3/P1P2PPP/1BNNRQKR w HEhe -
 perft 1 23
 perft 2 730
 perft 3 17743
@@ -434,7 +434,7 @@ perft 5 14496370
 perft 6 468608864
 
 id 48
-epd bn1brqkr/pppp2p1/3npp2/7p/PPP5/8/3PPPPP/BNNBRQKR w HEhe - 0 9
+epd bn1brqkr/pppp2p1/3npp2/7p/PPP5/8/3PPPPP/BNNBRQKR w HEhe -
 perft 1 25
 perft 2 673
 perft 3 17835
@@ -443,7 +443,7 @@ perft 5 14284338
 perft 6 434008567
 
 id 49
-epd bn1rqbkr/ppp1ppp1/1n6/2p4p/7P/3P4/PPP1PPP1/BN1RQBKR w HDhd - 0 9
+epd bn1rqbkr/ppp1ppp1/1n6/2p4p/7P/3P4/PPP1PPP1/BN1RQBKR w HDhd -
 perft 1 25
 perft 2 776
 perft 3 20562
@@ -452,7 +452,7 @@ perft 5 18486027
 perft 6 616653869
 
 id 50
-epd bnnr1krb/ppp2ppp/3p4/3Bp3/q1P3PP/8/PP1PPP2/BNNRQKR1 w GDgd - 0 9
+epd bnnr1krb/ppp2ppp/3p4/3Bp3/q1P3PP/8/PP1PPP2/BNNRQKR1 w GDgd -
 perft 1 29
 perft 2 1040
 perft 3 30772
@@ -461,7 +461,7 @@ perft 5 31801525
 perft 6 1075147725
 
 id 51
-epd 1bbnrqkr/pp1ppppp/8/2p5/n7/3PNPP1/PPP1P2P/NBB1RQKR w HEhe - 1 9
+epd 1bbnrqkr/pp1ppppp/8/2p5/n7/3PNPP1/PPP1P2P/NBB1RQKR w HEhe -
 perft 1 24
 perft 2 598
 perft 3 15673
@@ -470,7 +470,7 @@ perft 5 11394778
 perft 6 310589129
 
 id 52
-epd nnbbrqkr/p2ppp1p/1pp5/8/6p1/N1P5/PPBPPPPP/N1B1RQKR w HEhe - 0 9
+epd nnbbrqkr/p2ppp1p/1pp5/8/6p1/N1P5/PPBPPPPP/N1B1RQKR w HEhe -
 perft 1 26
 perft 2 530
 perft 3 14031
@@ -479,7 +479,7 @@ perft 5 8846766
 perft 6 229270702
 
 id 53
-epd nnbrqbkr/2p1p1pp/p4p2/1p1p4/8/NP6/P1PPPPPP/N1BRQBKR w HDhd - 0 9
+epd nnbrqbkr/2p1p1pp/p4p2/1p1p4/8/NP6/P1PPPPPP/N1BRQBKR w HDhd -
 perft 1 17
 perft 2 496
 perft 3 10220
@@ -488,7 +488,7 @@ perft 5 7103549
 perft 6 217108001
 
 id 54
-epd nnbrqk1b/pp2pprp/2pp2p1/8/3PP1P1/8/PPP2P1P/NNBRQRKB w d - 1 9
+epd nnbrqk1b/pp2pprp/2pp2p1/8/3PP1P1/8/PPP2P1P/NNBRQRKB w d -
 perft 1 33
 perft 2 820
 perft 3 27856
@@ -497,7 +497,7 @@ perft 5 24714401
 perft 6 645835197
 
 id 55
-epd 1bnrbqkr/ppnpp1p1/2p2p1p/8/1P6/4PPP1/P1PP3P/NBNRBQKR w HDhd - 0 9
+epd 1bnrbqkr/ppnpp1p1/2p2p1p/8/1P6/4PPP1/P1PP3P/NBNRBQKR w HDhd -
 perft 1 27
 perft 2 705
 perft 3 19760
@@ -506,7 +506,7 @@ perft 5 15964771
 perft 6 464662032
 
 id 56
-epd n1rbbqkr/pp1pppp1/7p/P1p5/1n6/2PP4/1P2PPPP/NNRBBQKR w HChc - 0 9
+epd n1rbbqkr/pp1pppp1/7p/P1p5/1n6/2PP4/1P2PPPP/NNRBBQKR w HChc -
 perft 1 22
 perft 2 631
 perft 3 14978
@@ -515,7 +515,7 @@ perft 5 10911545
 perft 6 320838556
 
 id 57
-epd n1rqb1kr/p1pppp1p/1pn4b/3P2p1/P7/1P6/2P1PPPP/NNRQBBKR w HChc - 0 9
+epd n1rqb1kr/p1pppp1p/1pn4b/3P2p1/P7/1P6/2P1PPPP/NNRQBBKR w HChc -
 perft 1 24
 perft 2 477
 perft 3 12506
@@ -524,7 +524,7 @@ perft 5 7419372
 perft 6 165945904
 
 id 58
-epd nnrqbkrb/pppp1pp1/7p/4p3/6P1/2N2B2/PPPPPP1P/NR1QBKR1 w Ggc - 2 9
+epd nnrqbkrb/pppp1pp1/7p/4p3/6P1/2N2B2/PPPPPP1P/NR1QBKR1 w Ggc -
 perft 1 29
 perft 2 658
 perft 3 19364
@@ -533,7 +533,7 @@ perft 5 14233587
 perft 6 373744834
 
 id 59
-epd n1nrqkbr/ppb2ppp/3pp3/2p5/2P3P1/5P2/PP1PPB1P/NBNRQK1R w HDhd - 1 9
+epd n1nrqkbr/ppb2ppp/3pp3/2p5/2P3P1/5P2/PP1PPB1P/NBNRQK1R w HDhd -
 perft 1 32
 perft 2 801
 perft 3 25861
@@ -542,7 +542,7 @@ perft 5 22318948
 perft 6 619857455
 
 id 60
-epd 2rbqkbr/p1pppppp/1nn5/1p6/7P/P4P2/1PPPP1PB/NNRBQK1R w HChc - 2 9
+epd 2rbqkbr/p1pppppp/1nn5/1p6/7P/P4P2/1PPPP1PB/NNRBQK1R w HChc -
 perft 1 27
 perft 2 647
 perft 3 18030
@@ -551,7 +551,7 @@ perft 5 13189156
 perft 6 354689323
 
 id 61
-epd nn1qkbbr/pp2ppp1/2rp4/2p4p/P2P4/1N5P/1PP1PPP1/1NRQKBBR w HCh - 1 9
+epd nn1qkbbr/pp2ppp1/2rp4/2p4p/P2P4/1N5P/1PP1PPP1/1NRQKBBR w HCh -
 perft 1 24
 perft 2 738
 perft 3 18916
@@ -560,7 +560,7 @@ perft 5 16420659
 perft 6 519075930
 
 id 62
-epd nnrqk1bb/p1ppp2p/5rp1/1p3p2/1P4P1/5P1P/P1PPP3/NNRQKRBB w FCc - 1 9
+epd nnrqk1bb/p1ppp2p/5rp1/1p3p2/1P4P1/5P1P/P1PPP3/NNRQKRBB w FCc -
 perft 1 25
 perft 2 795
 perft 3 20510
@@ -569,7 +569,7 @@ perft 5 17342527
 perft 6 556144017
 
 id 63
-epd bb1nrkqr/ppppn2p/4ppp1/8/1P4P1/4P3/P1PPKP1P/BBNNR1QR w he - 0 9
+epd bb1nrkqr/ppppn2p/4ppp1/8/1P4P1/4P3/P1PPKP1P/BBNNR1QR w he -
 perft 1 29
 perft 2 664
 perft 3 20024
@@ -578,7 +578,7 @@ perft 5 15373803
 perft 6 406016364
 
 id 64
-epd bnnbrkqr/1p1ppp2/8/p1p3pp/1P6/N4P2/PBPPP1PP/2NBRKQR w HEhe - 0 9
+epd bnnbrkqr/1p1ppp2/8/p1p3pp/1P6/N4P2/PBPPP1PP/2NBRKQR w HEhe -
 perft 1 31
 perft 2 770
 perft 3 24850
@@ -587,7 +587,7 @@ perft 5 22562080
 perft 6 662029574
 
 id 65
-epd 1nnrkbqr/p1pp1ppp/4p3/1p6/1Pb1P3/6PB/P1PP1P1P/BNNRK1QR w HDhd - 0 9
+epd 1nnrkbqr/p1pp1ppp/4p3/1p6/1Pb1P3/6PB/P1PP1P1P/BNNRK1QR w HDhd -
 perft 1 27
 perft 2 776
 perft 3 22133
@@ -596,7 +596,7 @@ perft 5 19153245
 perft 6 562738257
 
 id 66
-epd bnr1kqrb/pppp1pp1/1n5p/4p3/P3P3/3P2P1/1PP2P1P/BNNRKQRB w GDg - 0 9
+epd bnr1kqrb/pppp1pp1/1n5p/4p3/P3P3/3P2P1/1PP2P1P/BNNRKQRB w GDg -
 perft 1 26
 perft 2 624
 perft 3 16411
@@ -605,7 +605,7 @@ perft 5 11906515
 perft 6 338092952
 
 id 67
-epd nbbnrkqr/p1ppp1pp/1p3p2/8/2P5/4P3/PP1P1PPP/NBBNRKQR w HEhe - 1 9
+epd nbbnrkqr/p1ppp1pp/1p3p2/8/2P5/4P3/PP1P1PPP/NBBNRKQR w HEhe -
 perft 1 25
 perft 2 624
 perft 3 15561
@@ -614,7 +614,7 @@ perft 5 10817378
 perft 6 311138112
 
 id 68
-epd nn1brkqr/pp1bpppp/8/2pp4/P4P2/1PN5/2PPP1PP/N1BBRKQR w HEhe - 1 9
+epd nn1brkqr/pp1bpppp/8/2pp4/P4P2/1PN5/2PPP1PP/N1BBRKQR w HEhe -
 perft 1 23
 perft 2 659
 perft 3 16958
@@ -623,7 +623,7 @@ perft 5 13242252
 perft 6 373557073
 
 id 69
-epd n1brkbqr/ppp1pp1p/6pB/3p4/2Pn4/8/PP2PPPP/NN1RKBQR w HDhd - 0 9
+epd n1brkbqr/ppp1pp1p/6pB/3p4/2Pn4/8/PP2PPPP/NN1RKBQR w HDhd -
 perft 1 32
 perft 2 1026
 perft 3 30360
@@ -632,7 +632,7 @@ perft 5 29436320
 perft 6 957904151
 
 id 70
-epd nnbrkqrb/p2ppp2/Q5pp/1pp5/4PP2/2N5/PPPP2PP/N1BRK1RB w GDgd - 0 9
+epd nnbrkqrb/p2ppp2/Q5pp/1pp5/4PP2/2N5/PPPP2PP/N1BRK1RB w GDgd -
 perft 1 36
 perft 2 843
 perft 3 29017
@@ -641,7 +641,7 @@ perft 5 24321197
 perft 6 630396940
 
 id 71
-epd nbnrbk1r/pppppppq/8/7p/8/1N2QPP1/PPPPP2P/NB1RBK1R w HDhd - 2 9
+epd nbnrbk1r/pppppppq/8/7p/8/1N2QPP1/PPPPP2P/NB1RBK1R w HDhd -
 perft 1 36
 perft 2 973
 perft 3 35403
@@ -650,7 +650,7 @@ perft 5 37143354
 perft 6 1124883780
 
 id 72
-epd nnrbbkqr/2pppp1p/p7/6p1/1p2P3/4QPP1/PPPP3P/NNRBBK1R w HChc - 0 9
+epd nnrbbkqr/2pppp1p/p7/6p1/1p2P3/4QPP1/PPPP3P/NNRBBK1R w HChc -
 perft 1 36
 perft 2 649
 perft 3 22524
@@ -659,7 +659,7 @@ perft 5 16836636
 perft 6 416139320
 
 id 73
-epd nnrkbbqr/1p2pppp/p2p4/2p5/8/1N2P1P1/PPPP1P1P/1NKRBBQR w hc - 0 9
+epd nnrkbbqr/1p2pppp/p2p4/2p5/8/1N2P1P1/PPPP1P1P/1NKRBBQR w hc -
 perft 1 26
 perft 2 672
 perft 3 18136
@@ -668,7 +668,7 @@ perft 5 13342771
 perft 6 363074681
 
 id 74
-epd n1rkbqrb/pp1ppp2/2n3p1/2p4p/P5PP/1P6/2PPPP2/NNRKBQRB w GCgc - 0 9
+epd n1rkbqrb/pp1ppp2/2n3p1/2p4p/P5PP/1P6/2PPPP2/NNRKBQRB w GCgc -
 perft 1 24
 perft 2 804
 perft 3 20712
@@ -677,7 +677,7 @@ perft 5 18761475
 perft 6 617932151
 
 id 75
-epd nbkr1qbr/1pp1pppp/pn1p4/8/3P2P1/5R2/PPP1PP1P/NBN1KQBR w H - 2 9
+epd nbkr1qbr/1pp1pppp/pn1p4/8/3P2P1/5R2/PPP1PP1P/NBN1KQBR w H -
 perft 1 30
 perft 2 627
 perft 3 18669
@@ -686,7 +686,7 @@ perft 5 12815016
 perft 6 312798696
 
 id 76
-epd nnr1kqbr/pp1pp1p1/2p5/b4p1p/P7/1PNP4/2P1PPPP/N1RBKQBR w HChc - 1 9
+epd nnr1kqbr/pp1pp1p1/2p5/b4p1p/P7/1PNP4/2P1PPPP/N1RBKQBR w HChc -
 perft 1 12
 perft 2 421
 perft 3 6530
@@ -695,7 +695,7 @@ perft 5 4266410
 perft 6 149176979
 
 id 77
-epd n1rkqbbr/p1pp1pp1/np2p2p/8/8/N4PP1/PPPPP1BP/N1RKQ1BR w HChc - 0 9
+epd n1rkqbbr/p1pp1pp1/np2p2p/8/8/N4PP1/PPPPP1BP/N1RKQ1BR w HChc -
 perft 1 27
 perft 2 670
 perft 3 19119
@@ -704,7 +704,7 @@ perft 5 14708490
 perft 6 397268628
 
 id 78
-epd nnr1qrbb/p2kpppp/1p1p4/2p5/6P1/PP1P4/2P1PP1P/NNRKQRBB w FC - 0 9
+epd nnr1qrbb/p2kpppp/1p1p4/2p5/6P1/PP1P4/2P1PP1P/NNRKQRBB w FC -
 perft 1 27
 perft 2 604
 perft 3 17043
@@ -713,7 +713,7 @@ perft 5 11993332
 perft 6 308518181
 
 id 79
-epd bbnnrkrq/ppp1pp2/6p1/3p4/7p/7P/PPPPPPP1/BBNNRRKQ w ge - 0 9
+epd bbnnrkrq/ppp1pp2/6p1/3p4/7p/7P/PPPPPPP1/BBNNRRKQ w ge -
 perft 1 20
 perft 2 559
 perft 3 12242
@@ -722,7 +722,7 @@ perft 5 8427161
 perft 6 252274233
 
 id 80
-epd bnnbrkr1/ppp2p1p/5q2/3pp1p1/4P3/1N4P1/PPPPRP1P/BN1B1KRQ w Gge - 0 9
+epd bnnbrkr1/ppp2p1p/5q2/3pp1p1/4P3/1N4P1/PPPPRP1P/BN1B1KRQ w Gge -
 perft 1 26
 perft 2 1036
 perft 3 27228
@@ -731,7 +731,7 @@ perft 5 28286576
 perft 6 1042120495
 
 id 81
-epd bn1rkbrq/1pppppp1/p6p/1n6/3P4/6PP/PPPRPP2/BNN1KBRQ w Ggd - 2 9
+epd bn1rkbrq/1pppppp1/p6p/1n6/3P4/6PP/PPPRPP2/BNN1KBRQ w Ggd -
 perft 1 29
 perft 2 633
 perft 3 19278
@@ -740,7 +740,7 @@ perft 5 14333034
 perft 6 361900466
 
 id 82
-epd b1nrkrqb/1p1npppp/p2p4/2p5/5P2/4P2P/PPPP1RP1/BNNRK1QB w Dfd - 1 9
+epd b1nrkrqb/1p1npppp/p2p4/2p5/5P2/4P2P/PPPP1RP1/BNNRK1QB w Dfd -
 perft 1 25
 perft 2 475
 perft 3 12603
@@ -749,7 +749,7 @@ perft 5 7545536
 perft 6 179579818
 
 id 83
-epd 1bbnrkrq/ppppppp1/8/7p/1n4P1/1PN5/P1PPPP1P/NBBR1KRQ w Gge - 0 9
+epd 1bbnrkrq/ppppppp1/8/7p/1n4P1/1PN5/P1PPPP1P/NBBR1KRQ w Gge -
 perft 1 30
 perft 2 803
 perft 3 25473
@@ -758,7 +758,7 @@ perft 5 23443854
 perft 6 686365049
 
 id 84
-epd nnbbrkrq/2pp1pp1/1p5p/pP2p3/7P/N7/P1PPPPP1/N1BBRKRQ w GEge - 0 9
+epd nnbbrkrq/2pp1pp1/1p5p/pP2p3/7P/N7/P1PPPPP1/N1BBRKRQ w GEge -
 perft 1 18
 perft 2 432
 perft 3 9638
@@ -767,7 +767,7 @@ perft 5 6131124
 perft 6 160393505
 
 id 85
-epd nnbrkbrq/1pppp1p1/p7/7p/1P2Pp2/BN6/P1PP1PPP/1N1RKBRQ w GDgd - 0 9
+epd nnbrkbrq/1pppp1p1/p7/7p/1P2Pp2/BN6/P1PP1PPP/1N1RKBRQ w GDgd -
 perft 1 27
 perft 2 482
 perft 3 13441
@@ -776,7 +776,7 @@ perft 5 8084701
 perft 6 193484216
 
 id 86
-epd n1brkrqb/pppp3p/n3pp2/6p1/3P1P2/N1P5/PP2P1PP/N1BRKRQB w FDfd - 0 9
+epd n1brkrqb/pppp3p/n3pp2/6p1/3P1P2/N1P5/PP2P1PP/N1BRKRQB w FDfd -
 perft 1 28
 perft 2 642
 perft 3 19005
@@ -785,7 +785,7 @@ perft 5 14529434
 perft 6 384837696
 
 id 87
-epd nbnrbk2/p1pppp1p/1p3qr1/6p1/1B1P4/1N6/PPP1PPPP/1BNR1RKQ w d - 2 9
+epd nbnrbk2/p1pppp1p/1p3qr1/6p1/1B1P4/1N6/PPP1PPPP/1BNR1RKQ w d -
 perft 1 30
 perft 2 796
 perft 3 22780
@@ -794,7 +794,7 @@ perft 5 20120565
 perft 6 641832725
 
 id 88
-epd nnrbbrkq/1pp2ppp/3p4/p3p3/3P1P2/1P2P3/P1P3PP/NNRBBKRQ w GC - 1 9
+epd nnrbbrkq/1pp2ppp/3p4/p3p3/3P1P2/1P2P3/P1P3PP/NNRBBKRQ w GC -
 perft 1 31
 perft 2 827
 perft 3 24538
@@ -803,7 +803,7 @@ perft 5 19979594
 perft 6 549437308
 
 id 89
-epd nnrkbbrq/1pp2p1p/p2pp1p1/2P5/8/8/PP1PPPPP/NNRKBBRQ w Ggc - 0 9
+epd nnrkbbrq/1pp2p1p/p2pp1p1/2P5/8/8/PP1PPPPP/NNRKBBRQ w Ggc -
 perft 1 24
 perft 2 762
 perft 3 19283
@@ -812,7 +812,7 @@ perft 5 16838099
 perft 6 555230555
 
 id 90
-epd nnr1brqb/1ppkp1pp/8/p2p1p2/1P1P4/N1P5/P3PPPP/N1RKBRQB w FC - 1 9
+epd nnr1brqb/1ppkp1pp/8/p2p1p2/1P1P4/N1P5/P3PPPP/N1RKBRQB w FC -
 perft 1 23
 perft 2 640
 perft 3 15471
@@ -821,7 +821,7 @@ perft 5 11343507
 perft 6 334123513
 
 id 91
-epd nbnrkrbq/2ppp2p/p4p2/1P4p1/4PP2/8/1PPP2PP/NBNRKRBQ w FDfd - 0 9
+epd nbnrkrbq/2ppp2p/p4p2/1P4p1/4PP2/8/1PPP2PP/NBNRKRBQ w FDfd -
 perft 1 31
 perft 2 826
 perft 3 26137
@@ -830,7 +830,7 @@ perft 5 23555139
 perft 6 686250413
 
 id 92
-epd 1nrbkr1q/1pppp1pp/1n6/p4p2/N1b4P/8/PPPPPPPB/N1RBKR1Q w FCfc - 2 9
+epd 1nrbkr1q/1pppp1pp/1n6/p4p2/N1b4P/8/PPPPPPPB/N1RBKR1Q w FCfc -
 perft 1 27
 perft 2 862
 perft 3 24141
@@ -839,7 +839,7 @@ perft 5 22027695
 perft 6 696353497
 
 id 93
-epd nnrkrbbq/pppp2pp/8/4pp2/4P3/P7/1PPPBPPP/NNKRR1BQ w c - 0 9
+epd nnrkrbbq/pppp2pp/8/4pp2/4P3/P7/1PPPBPPP/NNKRR1BQ w c -
 perft 1 25
 perft 2 792
 perft 3 19883
@@ -848,7 +848,7 @@ perft 5 16473376
 perft 6 532214177
 
 id 94
-epd n1rk1qbb/pppprpp1/2n4p/4p3/2PP3P/8/PP2PPP1/NNRKRQBB w ECc - 1 9
+epd n1rk1qbb/pppprpp1/2n4p/4p3/2PP3P/8/PP2PPP1/NNRKRQBB w ECc -
 perft 1 25
 perft 2 622
 perft 3 16031
@@ -857,7 +857,7 @@ perft 5 11420973
 perft 6 321855685
 
 id 95
-epd bbq1rnkr/pnp1pp1p/1p1p4/6p1/2P5/2Q1P2P/PP1P1PP1/BB1NRNKR w HEhe - 2 9
+epd bbq1rnkr/pnp1pp1p/1p1p4/6p1/2P5/2Q1P2P/PP1P1PP1/BB1NRNKR w HEhe -
 perft 1 36
 perft 2 870
 perft 3 30516
@@ -866,7 +866,7 @@ perft 5 28127620
 perft 6 799738334
 
 id 96
-epd bq1brnkr/1p1ppp1p/1np5/p5p1/8/1N5P/PPPPPPP1/BQ1BRNKR w HEhe - 0 9
+epd bq1brnkr/1p1ppp1p/1np5/p5p1/8/1N5P/PPPPPPP1/BQ1BRNKR w HEhe -
 perft 1 22
 perft 2 588
 perft 3 13524
@@ -875,7 +875,7 @@ perft 5 9359618
 perft 6 273795898
 
 id 97
-epd bq1rn1kr/1pppppbp/Nn4p1/8/8/P7/1PPPPPPP/BQ1RNBKR w HDhd - 1 9
+epd bq1rn1kr/1pppppbp/Nn4p1/8/8/P7/1PPPPPPP/BQ1RNBKR w HDhd -
 perft 1 24
 perft 2 711
 perft 3 18197
@@ -884,7 +884,7 @@ perft 5 14692779
 perft 6 445827351
 
 id 98
-epd bqnr1kr1/pppppp1p/6p1/5n2/4B3/3N2PP/PbPPPP2/BQNR1KR1 w GDgd - 2 9
+epd bqnr1kr1/pppppp1p/6p1/5n2/4B3/3N2PP/PbPPPP2/BQNR1KR1 w GDgd -
 perft 1 31
 perft 2 1132
 perft 3 36559
@@ -893,7 +893,7 @@ perft 5 43256823
 perft 6 1456721391
 
 id 99
-epd qbb1rnkr/ppp3pp/4n3/3ppp2/1P3PP1/8/P1PPPN1P/QBB1RNKR w HEhe - 0 9
+epd qbb1rnkr/ppp3pp/4n3/3ppp2/1P3PP1/8/P1PPPN1P/QBB1RNKR w HEhe -
 perft 1 28
 perft 2 696
 perft 3 20502
@@ -902,7 +902,7 @@ perft 5 16492398
 perft 6 456983120
 
 id 100
-epd qnbbr1kr/pp1ppp1p/4n3/6p1/2p3P1/2PP1P2/PP2P2P/QNBBRNKR w HEhe - 0 9
+epd qnbbr1kr/pp1ppp1p/4n3/6p1/2p3P1/2PP1P2/PP2P2P/QNBBRNKR w HEhe -
 perft 1 25
 perft 2 655
 perft 3 16520
@@ -911,7 +911,7 @@ perft 5 11767038
 perft 6 335414976
 
 id 101
-epd 1nbrnbkr/p1ppp1pp/1p6/5p2/4q1PP/3P4/PPP1PP2/QNBRNBKR w HDhd - 1 9
+epd 1nbrnbkr/p1ppp1pp/1p6/5p2/4q1PP/3P4/PPP1PP2/QNBRNBKR w HDhd -
 perft 1 30
 perft 2 1162
 perft 3 33199
@@ -920,7 +920,7 @@ perft 5 36048727
 perft 6 1290346802
 
 id 102
-epd q1brnkrb/p1pppppp/n7/1p6/P7/3P1P2/QPP1P1PP/1NBRNKRB w GDgd - 0 9
+epd q1brnkrb/p1pppppp/n7/1p6/P7/3P1P2/QPP1P1PP/1NBRNKRB w GDgd -
 perft 1 32
 perft 2 827
 perft 3 26106
@@ -929,7 +929,7 @@ perft 5 23143989
 perft 6 673147648
 
 id 103
-epd qbnrb1kr/ppp1pp1p/3p4/2n3p1/1P6/6N1/P1PPPPPP/QBNRB1KR w HDhd - 2 9
+epd qbnrb1kr/ppp1pp1p/3p4/2n3p1/1P6/6N1/P1PPPPPP/QBNRB1KR w HDhd -
 perft 1 29
 perft 2 751
 perft 3 23132
@@ -938,7 +938,7 @@ perft 5 19555214
 perft 6 530475036
 
 id 104
-epd q1rbbnkr/pppp1p2/2n3pp/2P1p3/3P4/8/PP1NPPPP/Q1RBBNKR w HChc - 2 9
+epd q1rbbnkr/pppp1p2/2n3pp/2P1p3/3P4/8/PP1NPPPP/Q1RBBNKR w HChc -
 perft 1 29
 perft 2 806
 perft 3 24540
@@ -947,7 +947,7 @@ perft 5 21694330
 perft 6 619907316
 
 id 105
-epd q1r1bbkr/pnpp1ppp/2n1p3/1p6/2P2P2/2N1N3/PP1PP1PP/Q1R1BBKR w HChc - 2 9
+epd q1r1bbkr/pnpp1ppp/2n1p3/1p6/2P2P2/2N1N3/PP1PP1PP/Q1R1BBKR w HChc -
 perft 1 32
 perft 2 1017
 perft 3 32098
@@ -956,7 +956,7 @@ perft 5 31204371
 perft 6 958455898
 
 id 106
-epd 2rnbkrb/pqppppp1/1pn5/7p/2P5/P1R5/QP1PPPPP/1N1NBKRB w Ggc - 4 9
+epd 2rnbkrb/pqppppp1/1pn5/7p/2P5/P1R5/QP1PPPPP/1N1NBKRB w Ggc -
 perft 1 26
 perft 2 625
 perft 3 16506
@@ -965,7 +965,7 @@ perft 5 11856964
 perft 6 336672890
 
 id 107
-epd qbnr1kbr/p2ppppp/2p5/1p6/4n2P/P4N2/1PPP1PP1/QBNR1KBR w HDhd - 0 9
+epd qbnr1kbr/p2ppppp/2p5/1p6/4n2P/P4N2/1PPP1PP1/QBNR1KBR w HDhd -
 perft 1 27
 perft 2 885
 perft 3 23828
@@ -974,7 +974,7 @@ perft 5 21855658
 perft 6 706272554
 
 id 108
-epd qnrbnk1r/pp1pp2p/5p2/2pbP1p1/3P4/1P6/P1P2PPP/QNRBNKBR w HChc - 0 9
+epd qnrbnk1r/pp1pp2p/5p2/2pbP1p1/3P4/1P6/P1P2PPP/QNRBNKBR w HChc -
 perft 1 26
 perft 2 954
 perft 3 24832
@@ -983,7 +983,7 @@ perft 5 24415089
 perft 6 866744329
 
 id 109
-epd qnrnk1br/p1p2ppp/8/1pbpp3/8/PP2N3/1QPPPPPP/1NR1KBBR w HChc - 0 9
+epd qnrnk1br/p1p2ppp/8/1pbpp3/8/PP2N3/1QPPPPPP/1NR1KBBR w HChc -
 perft 1 26
 perft 2 783
 perft 3 20828
@@ -992,7 +992,7 @@ perft 5 17477825
 perft 6 539674275
 
 id 110
-epd qnrnkrbb/Bpppp2p/6p1/5p2/5P2/3PP3/PPP3PP/QNRNKR1B w FCfc - 1 9
+epd qnrnkrbb/Bpppp2p/6p1/5p2/5P2/3PP3/PPP3PP/QNRNKR1B w FCfc -
 perft 1 28
 perft 2 908
 perft 3 25730
@@ -1001,7 +1001,7 @@ perft 5 25251641
 perft 6 869525254
 
 id 111
-epd bbnqrn1r/ppppp2k/5p2/6pp/7P/1QP5/PP1PPPP1/B1N1RNKR w HE - 0 9
+epd bbnqrn1r/ppppp2k/5p2/6pp/7P/1QP5/PP1PPPP1/B1N1RNKR w HE -
 perft 1 33
 perft 2 643
 perft 3 21790
@@ -1010,7 +1010,7 @@ perft 5 16693640
 perft 6 410115900
 
 id 112
-epd b1qbrnkr/ppp1pp2/2np4/6pp/4P3/2N4P/PPPP1PP1/BQ1BRNKR w HEhe - 0 9
+epd b1qbrnkr/ppp1pp2/2np4/6pp/4P3/2N4P/PPPP1PP1/BQ1BRNKR w HEhe -
 perft 1 28
 perft 2 837
 perft 3 24253
@@ -1019,7 +1019,7 @@ perft 5 22197063
 perft 6 696399065
 
 id 113
-epd bnqr1bkr/pp1ppppp/2p5/4N3/5P2/P7/1PPPPnPP/BNQR1BKR w HDhd - 3 9
+epd bnqr1bkr/pp1ppppp/2p5/4N3/5P2/P7/1PPPPnPP/BNQR1BKR w HDhd -
 perft 1 25
 perft 2 579
 perft 3 13909
@@ -1028,7 +1028,7 @@ perft 5 8601011
 perft 6 225530258
 
 id 114
-epd b1qr1krb/pp1ppppp/n2n4/8/2p5/2P3P1/PP1PPP1P/BNQRNKRB w GDgd - 0 9
+epd b1qr1krb/pp1ppppp/n2n4/8/2p5/2P3P1/PP1PPP1P/BNQRNKRB w GDgd -
 perft 1 28
 perft 2 707
 perft 3 19721
@@ -1037,7 +1037,7 @@ perft 5 15583376
 perft 6 468399900
 
 id 115
-epd nbbqr1kr/1pppp1pp/8/p1n2p2/4P3/PN6/1PPPQPPP/1BB1RNKR w HEhe - 0 9
+epd nbbqr1kr/1pppp1pp/8/p1n2p2/4P3/PN6/1PPPQPPP/1BB1RNKR w HEhe -
 perft 1 30
 perft 2 745
 perft 3 23416
@@ -1046,7 +1046,7 @@ perft 5 19478789
 perft 6 515473678
 
 id 116
-epd nqbbrn1r/p1pppp1k/1p4p1/7p/4P3/1R3B2/PPPP1PPP/NQB2NKR w H - 0 9
+epd nqbbrn1r/p1pppp1k/1p4p1/7p/4P3/1R3B2/PPPP1PPP/NQB2NKR w H -
 perft 1 24
 perft 2 504
 perft 3 13512
@@ -1055,7 +1055,7 @@ perft 5 9002073
 perft 6 228726497
 
 id 117
-epd nqbr1bkr/p1p1ppp1/1p1n4/3pN2p/1P6/8/P1PPPPPP/NQBR1BKR w HDhd - 0 9
+epd nqbr1bkr/p1p1ppp1/1p1n4/3pN2p/1P6/8/P1PPPPPP/NQBR1BKR w HDhd -
 perft 1 29
 perft 2 898
 perft 3 26532
@@ -1064,7 +1064,7 @@ perft 5 24703467
 perft 6 757166494
 
 id 118
-epd nqbrn1rb/pppp1kp1/5p1p/4p3/P4B2/3P2P1/1PP1PP1P/NQ1RNKRB w GD - 0 9
+epd nqbrn1rb/pppp1kp1/5p1p/4p3/P4B2/3P2P1/1PP1PP1P/NQ1RNKRB w GD -
 perft 1 34
 perft 2 671
 perft 3 22332
@@ -1073,7 +1073,7 @@ perft 5 15556806
 perft 6 353235120
 
 id 119
-epd nb1r1nkr/ppp1ppp1/2bp4/7p/3P2qP/P6R/1PP1PPP1/NBQRBNK1 w Dhd - 1 9
+epd nb1r1nkr/ppp1ppp1/2bp4/7p/3P2qP/P6R/1PP1PPP1/NBQRBNK1 w Dhd -
 perft 1 38
 perft 2 1691
 perft 3 60060
@@ -1082,7 +1082,7 @@ perft 5 88557078
 perft 6 3589649998
 
 id 120
-epd n1rbbnkr/1p1pp1pp/p7/2p1qp2/1B3P2/3P4/PPP1P1PP/NQRB1NKR w HChc - 0 9
+epd n1rbbnkr/1p1pp1pp/p7/2p1qp2/1B3P2/3P4/PPP1P1PP/NQRB1NKR w HChc -
 perft 1 24
 perft 2 913
 perft 3 21595
@@ -1091,7 +1091,7 @@ perft 5 19866918
 perft 6 737239330
 
 id 121
-epd nqrnbbkr/p2p1p1p/1pp5/1B2p1p1/1P3P2/4P3/P1PP2PP/NQRNB1KR w HChc - 0 9
+epd nqrnbbkr/p2p1p1p/1pp5/1B2p1p1/1P3P2/4P3/P1PP2PP/NQRNB1KR w HChc -
 perft 1 33
 perft 2 913
 perft 3 30159
@@ -1100,7 +1100,7 @@ perft 5 28053260
 perft 6 804687975
 
 id 122
-epd nqr1bkrb/ppp1pp2/2np2p1/P6p/8/2P4P/1P1PPPP1/NQRNBKRB w GCgc - 0 9
+epd nqr1bkrb/ppp1pp2/2np2p1/P6p/8/2P4P/1P1PPPP1/NQRNBKRB w GCgc -
 perft 1 24
 perft 2 623
 perft 3 16569
@@ -1109,7 +1109,7 @@ perft 5 12681936
 perft 6 351623879
 
 id 123
-epd nb1rnkbr/pqppppp1/1p5p/8/1PP4P/8/P2PPPP1/NBQRNKBR w HDhd - 1 9
+epd nb1rnkbr/pqppppp1/1p5p/8/1PP4P/8/P2PPPP1/NBQRNKBR w HDhd -
 perft 1 31
 perft 2 798
 perft 3 24862
@@ -1118,7 +1118,7 @@ perft 5 22616076
 perft 6 666227466
 
 id 124
-epd nqrbnkbr/2p1p1pp/3p4/pp3p2/6PP/3P1N2/PPP1PP2/NQRB1KBR w HChc - 0 9
+epd nqrbnkbr/2p1p1pp/3p4/pp3p2/6PP/3P1N2/PPP1PP2/NQRB1KBR w HChc -
 perft 1 24
 perft 2 590
 perft 3 14409
@@ -1127,7 +1127,7 @@ perft 5 9698432
 perft 6 274064911
 
 id 125
-epd nqrnkbbr/pp1p1p1p/4p1p1/1p6/8/5P1P/P1PPP1P1/NQRNKBBR w HChc - 0 9
+epd nqrnkbbr/pp1p1p1p/4p1p1/1p6/8/5P1P/P1PPP1P1/NQRNKBBR w HChc -
 perft 1 30
 perft 2 1032
 perft 3 31481
@@ -1136,7 +1136,7 @@ perft 5 34914919
 perft 6 1233362066
 
 id 126
-epd nqrnkrbb/p2ppppp/1p6/2p5/2P3P1/5P2/PP1PPN1P/NQR1KRBB w FCfc - 1 9
+epd nqrnkrbb/p2ppppp/1p6/2p5/2P3P1/5P2/PP1PPN1P/NQR1KRBB w FCfc -
 perft 1 30
 perft 2 775
 perft 3 23958
@@ -1145,7 +1145,7 @@ perft 5 21141738
 perft 6 621142773
 
 id 127
-epd bbnrqrk1/pp2pppp/4n3/2pp4/P7/1N5P/BPPPPPP1/B2RQNKR w HD - 2 9
+epd bbnrqrk1/pp2pppp/4n3/2pp4/P7/1N5P/BPPPPPP1/B2RQNKR w HD -
 perft 1 23
 perft 2 708
 perft 3 17164
@@ -1154,7 +1154,7 @@ perft 5 14343443
 perft 6 481405144
 
 id 128
-epd bnr1qnkr/p1pp1p1p/1p4p1/4p1b1/2P1P3/1P6/PB1P1PPP/1NRBQNKR w HChc - 1 9
+epd bnr1qnkr/p1pp1p1p/1p4p1/4p1b1/2P1P3/1P6/PB1P1PPP/1NRBQNKR w HChc -
 perft 1 30
 perft 2 931
 perft 3 29249
@@ -1163,7 +1163,7 @@ perft 5 30026687
 perft 6 968109774
 
 id 129
-epd b1rqnbkr/ppp1ppp1/3p3p/2n5/P3P3/2NP4/1PP2PPP/B1RQNBKR w HChc - 0 9
+epd b1rqnbkr/ppp1ppp1/3p3p/2n5/P3P3/2NP4/1PP2PPP/B1RQNBKR w HChc -
 perft 1 24
 perft 2 596
 perft 3 15533
@@ -1172,7 +1172,7 @@ perft 5 11099382
 perft 6 294180723
 
 id 130
-epd bnrqnr1b/pp1pkppp/2p1p3/P7/2P5/7P/1P1PPPP1/BNRQNKRB w GC - 0 9
+epd bnrqnr1b/pp1pkppp/2p1p3/P7/2P5/7P/1P1PPPP1/BNRQNKRB w GC -
 perft 1 24
 perft 2 572
 perft 3 15293
@@ -1181,7 +1181,7 @@ perft 5 11208688
 perft 6 302955778
 
 id 131
-epd n1brq1kr/bppppppp/p7/8/4P1Pn/8/PPPP1P2/NBBRQNKR w HDhd - 0 9
+epd n1brq1kr/bppppppp/p7/8/4P1Pn/8/PPPP1P2/NBBRQNKR w HDhd -
 perft 1 20
 perft 2 570
 perft 3 13139
@@ -1190,7 +1190,7 @@ perft 5 9919113
 perft 6 284592289
 
 id 132
-epd 1rbbqnkr/ppn1ppp1/3p3p/2p5/3P4/1N4P1/PPPBPP1P/1R1BQNKR w HBhb - 0 9
+epd 1rbbqnkr/ppn1ppp1/3p3p/2p5/3P4/1N4P1/PPPBPP1P/1R1BQNKR w HBhb -
 perft 1 29
 perft 2 1009
 perft 3 29547
@@ -1199,7 +1199,7 @@ perft 5 31059587
 perft 6 1111986835
 
 id 133
-epd nrbq2kr/ppppppb1/5n1p/5Pp1/8/P5P1/1PPPP2P/NRBQNBKR w HBhb - 1 9
+epd nrbq2kr/ppppppb1/5n1p/5Pp1/8/P5P1/1PPPP2P/NRBQNBKR w HBhb -
 perft 1 20
 perft 2 520
 perft 3 11745
@@ -1208,7 +1208,7 @@ perft 5 7809837
 perft 6 216997152
 
 id 134
-epd nrb1nkrb/pp3ppp/1qBpp3/2p5/8/P5P1/1PPPPP1P/NRBQNKR1 w GBgb - 2 9
+epd nrb1nkrb/pp3ppp/1qBpp3/2p5/8/P5P1/1PPPPP1P/NRBQNKR1 w GBgb -
 perft 1 32
 perft 2 850
 perft 3 25642
@@ -1217,7 +1217,7 @@ perft 5 21981567
 perft 6 664886187
 
 id 135
-epd 1br1bnkr/ppqppp1p/1np3p1/8/1PP4P/4N3/P2PPPP1/NBRQB1KR w HChc - 1 9
+epd 1br1bnkr/ppqppp1p/1np3p1/8/1PP4P/4N3/P2PPPP1/NBRQB1KR w HChc -
 perft 1 32
 perft 2 798
 perft 3 24765
@@ -1226,7 +1226,7 @@ perft 5 22076141
 perft 6 670296871
 
 id 136
-epd nrqbb1kr/1p1pp1pp/2p3n1/p4p2/3PP3/P5N1/1PP2PPP/NRQBB1KR w HBhb - 0 9
+epd nrqbb1kr/1p1pp1pp/2p3n1/p4p2/3PP3/P5N1/1PP2PPP/NRQBB1KR w HBhb -
 perft 1 32
 perft 2 791
 perft 3 26213
@@ -1235,7 +1235,7 @@ perft 5 23239122
 perft 6 634260266
 
 id 137
-epd nrqn1bkr/ppppp1pp/4b3/8/4P1p1/5P2/PPPP3P/NRQNBBKR w HBhb - 0 9
+epd nrqn1bkr/ppppp1pp/4b3/8/4P1p1/5P2/PPPP3P/NRQNBBKR w HBhb -
 perft 1 29
 perft 2 687
 perft 3 20223
@@ -1244,7 +1244,7 @@ perft 5 15236287
 perft 6 398759980
 
 id 138
-epd nrqnbrkb/pppp1p2/4p2p/3B2p1/8/1P4P1/PQPPPP1P/NR1NBKR1 w GB - 0 9
+epd nrqnbrkb/pppp1p2/4p2p/3B2p1/8/1P4P1/PQPPPP1P/NR1NBKR1 w GB -
 perft 1 37
 perft 2 764
 perft 3 27073
@@ -1253,7 +1253,7 @@ perft 5 21284835
 perft 6 514864869
 
 id 139
-epd nbrq1kbr/Bp3ppp/2pnp3/3p4/5P2/2P4P/PP1PP1P1/NBRQNK1R w HChc - 0 9
+epd nbrq1kbr/Bp3ppp/2pnp3/3p4/5P2/2P4P/PP1PP1P1/NBRQNK1R w HChc -
 perft 1 40
 perft 2 1271
 perft 3 48022
@@ -1262,7 +1262,7 @@ perft 5 56588117
 perft 6 1850696281
 
 id 140
-epd nrqbnkbr/1p2ppp1/p1p4p/3p4/1P6/8/PQPPPPPP/1RNBNKBR w HBhb - 0 9
+epd nrqbnkbr/1p2ppp1/p1p4p/3p4/1P6/8/PQPPPPPP/1RNBNKBR w HBhb -
 perft 1 28
 perft 2 757
 perft 3 23135
@@ -1271,7 +1271,7 @@ perft 5 21427496
 perft 6 650939962
 
 id 141
-epd nrqn1bbr/2ppkppp/4p3/pB6/8/2P1P3/PP1P1PPP/NRQNK1BR w HB - 1 9
+epd nrqn1bbr/2ppkppp/4p3/pB6/8/2P1P3/PP1P1PPP/NRQNK1BR w HB -
 perft 1 27
 perft 2 642
 perft 3 17096
@@ -1280,7 +1280,7 @@ perft 5 11872805
 perft 6 327545120
 
 id 142
-epd nrqnkrb1/p1ppp2p/1p4p1/4bp2/4PP1P/4N3/PPPP2P1/NRQ1KRBB w FBfb - 1 9
+epd nrqnkrb1/p1ppp2p/1p4p1/4bp2/4PP1P/4N3/PPPP2P1/NRQ1KRBB w FBfb -
 perft 1 27
 perft 2 958
 perft 3 27397
@@ -1289,7 +1289,7 @@ perft 5 28520172
 perft 6 995356563
 
 id 143
-epd 1bnrnqkr/pbpp2pp/8/1p2pp2/P6P/3P1N2/1PP1PPP1/BBNR1QKR w HDhd - 0 9
+epd 1bnrnqkr/pbpp2pp/8/1p2pp2/P6P/3P1N2/1PP1PPP1/BBNR1QKR w HDhd -
 perft 1 27
 perft 2 859
 perft 3 23475
@@ -1298,7 +1298,7 @@ perft 5 21581178
 perft 6 732696327
 
 id 144
-epd b1rbnqkr/1pp1ppp1/2n4p/p2p4/5P2/1PBP4/P1P1P1PP/1NRBNQKR w HChc - 0 9
+epd b1rbnqkr/1pp1ppp1/2n4p/p2p4/5P2/1PBP4/P1P1P1PP/1NRBNQKR w HChc -
 perft 1 26
 perft 2 545
 perft 3 14817
@@ -1307,7 +1307,7 @@ perft 5 9537260
 perft 6 233549184
 
 id 145
-epd 1nrnqbkr/p1pppppp/1p6/8/2b2P2/P1N5/1PP1P1PP/BNR1QBKR w HChc - 2 9
+epd 1nrnqbkr/p1pppppp/1p6/8/2b2P2/P1N5/1PP1P1PP/BNR1QBKR w HChc -
 perft 1 24
 perft 2 668
 perft 3 17716
@@ -1316,7 +1316,7 @@ perft 5 14216070
 perft 6 406225409
 
 id 146
-epd 1nrnqkrb/2ppp1pp/p7/1p3p2/5P2/N5K1/PPPPP2P/B1RNQ1RB w gc - 0 9
+epd 1nrnqkrb/2ppp1pp/p7/1p3p2/5P2/N5K1/PPPPP2P/B1RNQ1RB w gc -
 perft 1 33
 perft 2 725
 perft 3 23572
@@ -1325,7 +1325,7 @@ perft 5 18547476
 perft 6 471443091
 
 id 147
-epd nbbr1qkr/p1pppppp/8/1p1n4/3P4/1N3PP1/PPP1P2P/1BBRNQKR w HDhd - 1 9
+epd nbbr1qkr/p1pppppp/8/1p1n4/3P4/1N3PP1/PPP1P2P/1BBRNQKR w HDhd -
 perft 1 28
 perft 2 698
 perft 3 20527
@@ -1334,7 +1334,7 @@ perft 5 16555068
 perft 6 458045505
 
 id 148
-epd 1rbbnqkr/1pnppp1p/p5p1/2p5/2P4P/5P2/PP1PP1PR/NRBBNQK1 w Bhb - 1 9
+epd 1rbbnqkr/1pnppp1p/p5p1/2p5/2P4P/5P2/PP1PP1PR/NRBBNQK1 w Bhb -
 perft 1 24
 perft 2 554
 perft 3 14221
@@ -1343,7 +1343,7 @@ perft 5 9863080
 perft 6 269284081
 
 id 149
-epd nrb1qbkr/2pppppp/2n5/p7/2p5/4P3/PPNP1PPP/1RBNQBKR w HBhb - 0 9
+epd nrb1qbkr/2pppppp/2n5/p7/2p5/4P3/PPNP1PPP/1RBNQBKR w HBhb -
 perft 1 23
 perft 2 618
 perft 3 15572
@@ -1352,7 +1352,7 @@ perft 5 12044358
 perft 6 360311412
 
 id 150
-epd nrb1qkrb/2ppppp1/p3n3/1p1B3p/2P5/6P1/PP1PPPRP/NRBNQK2 w Bgb - 2 9
+epd nrb1qkrb/2ppppp1/p3n3/1p1B3p/2P5/6P1/PP1PPPRP/NRBNQK2 w Bgb -
 perft 1 27
 perft 2 593
 perft 3 16770
@@ -1361,7 +1361,7 @@ perft 5 11806808
 perft 6 303338935
 
 id 151
-epd nbrn1qkr/ppp1pp2/3p2p1/3Q3P/b7/8/PPPPPP1P/NBRNB1KR w HChc - 2 9
+epd nbrn1qkr/ppp1pp2/3p2p1/3Q3P/b7/8/PPPPPP1P/NBRNB1KR w HChc -
 perft 1 39
 perft 2 1056
 perft 3 40157
@@ -1370,7 +1370,7 @@ perft 5 42201531
 perft 6 1239888683
 
 id 152
-epd nr1bbqkr/pp1pp2p/1n3pp1/2p5/8/1P4P1/P1PPPPQP/NRNBBK1R w hb - 0 9
+epd nr1bbqkr/pp1pp2p/1n3pp1/2p5/8/1P4P1/P1PPPPQP/NRNBBK1R w hb -
 perft 1 25
 perft 2 585
 perft 3 15719
@@ -1379,7 +1379,7 @@ perft 5 11582539
 perft 6 320997679
 
 id 153
-epd nr2bbkr/ppp1pppp/1n1p4/8/6PP/1NP4q/PP1PPP2/1RNQBBKR w HBhb - 1 9
+epd nr2bbkr/ppp1pppp/1n1p4/8/6PP/1NP4q/PP1PPP2/1RNQBBKR w HBhb -
 perft 1 22
 perft 2 742
 perft 3 15984
@@ -1388,7 +1388,7 @@ perft 5 13287051
 perft 6 457010195
 
 id 154
-epd 1rnqbkrb/ppp1p1p1/1n3p2/3p3p/P6P/4P3/1PPP1PP1/NRNQBRKB w gb - 0 9
+epd 1rnqbkrb/ppp1p1p1/1n3p2/3p3p/P6P/4P3/1PPP1PP1/NRNQBRKB w gb -
 perft 1 22
 perft 2 574
 perft 3 14044
@@ -1397,7 +1397,7 @@ perft 5 9968830
 perft 6 281344367
 
 id 155
-epd nb1rqkbr/1pppp1pp/4n3/p4p2/6PP/5P2/PPPPPN2/NBR1QKBR w HCh - 0 9
+epd nb1rqkbr/1pppp1pp/4n3/p4p2/6PP/5P2/PPPPPN2/NBR1QKBR w HCh -
 perft 1 25
 perft 2 621
 perft 3 16789
@@ -1406,7 +1406,7 @@ perft 5 13378840
 perft 6 396575613
 
 id 156
-epd nrnbqkbr/2pp2pp/4pp2/pp6/8/1P3P2/P1PPPBPP/NRNBQ1KR w hb - 0 9
+epd nrnbqkbr/2pp2pp/4pp2/pp6/8/1P3P2/P1PPPBPP/NRNBQ1KR w hb -
 perft 1 25
 perft 2 656
 perft 3 16951
@@ -1415,7 +1415,7 @@ perft 5 12525939
 perft 6 358763789
 
 id 157
-epd nrnqkbbr/ppppp1p1/7p/5p2/8/P4PP1/NPPPP2P/NR1QKBBR w HBhb - 0 9
+epd nrnqkbbr/ppppp1p1/7p/5p2/8/P4PP1/NPPPP2P/NR1QKBBR w HBhb -
 perft 1 28
 perft 2 723
 perft 3 20621
@@ -1424,7 +1424,7 @@ perft 5 15952533
 perft 6 439046803
 
 id 158
-epd 1rnqkr1b/ppppp2p/1n3pp1/8/2P3P1/Pb1N4/1P1PPP1P/NR1QKRBB w FBfb - 0 9
+epd 1rnqkr1b/ppppp2p/1n3pp1/8/2P3P1/Pb1N4/1P1PPP1P/NR1QKRBB w FBfb -
 perft 1 26
 perft 2 713
 perft 3 19671
@@ -1433,7 +1433,7 @@ perft 5 15865528
 perft 6 454532806
 
 id 159
-epd bbnrnkqr/1pppp1pp/5p2/p7/7P/1P6/PBPPPPPR/1BNRNKQ1 w D - 2 9
+epd bbnrnkqr/1pppp1pp/5p2/p7/7P/1P6/PBPPPPPR/1BNRNKQ1 w D -
 perft 1 26
 perft 2 649
 perft 3 17834
@@ -1442,7 +1442,7 @@ perft 5 14375839
 perft 6 435585252
 
 id 160
-epd bnrbk1qr/1ppp1ppp/p2np3/8/P7/2N2P2/1PPPP1PP/B1RBNKQR w HC - 0 9
+epd bnrbk1qr/1ppp1ppp/p2np3/8/P7/2N2P2/1PPPP1PP/B1RBNKQR w HC -
 perft 1 26
 perft 2 621
 perft 3 17569
@@ -1451,7 +1451,7 @@ perft 5 13514201
 perft 6 364421088
 
 id 161
-epd br1nkbqr/ppppppp1/8/n6p/8/N1P2PP1/PP1PP2P/B1RNKBQR w HCh - 1 9
+epd br1nkbqr/ppppppp1/8/n6p/8/N1P2PP1/PP1PP2P/B1RNKBQR w HCh -
 perft 1 29
 perft 2 664
 perft 3 20182
@@ -1460,7 +1460,7 @@ perft 5 16125924
 perft 6 442508159
 
 id 162
-epd bnr1kqrb/pp1pppp1/2n5/2p5/1P4Pp/4N3/P1PPPP1P/BNKR1QRB w gc - 0 9
+epd bnr1kqrb/pp1pppp1/2n5/2p5/1P4Pp/4N3/P1PPPP1P/BNKR1QRB w gc -
 perft 1 36
 perft 2 888
 perft 3 31630
@@ -1469,7 +1469,7 @@ perft 5 27792175
 perft 6 719015345
 
 id 163
-epd 1bbrnkqr/pp1p1ppp/2p1p3/1n6/5P2/3Q4/PPPPP1PP/NBBRNK1R w HDhd - 2 9
+epd 1bbrnkqr/pp1p1ppp/2p1p3/1n6/5P2/3Q4/PPPPP1PP/NBBRNK1R w HDhd -
 perft 1 36
 perft 2 891
 perft 3 31075
@@ -1478,7 +1478,7 @@ perft 5 26998966
 perft 6 702903862
 
 id 164
-epd nrbbnk1r/pp2pppq/8/2pp3p/3P2P1/1N6/PPP1PP1P/1RBBNKQR w HBhb - 0 9
+epd nrbbnk1r/pp2pppq/8/2pp3p/3P2P1/1N6/PPP1PP1P/1RBBNKQR w HBhb -
 perft 1 29
 perft 2 1036
 perft 3 31344
@@ -1487,7 +1487,7 @@ perft 5 35627310
 perft 6 1310683359
 
 id 165
-epd nr1nkbqr/ppp3pp/5p2/3pp3/6b1/3PP3/PPP2PPP/NRBNKBQR w hb - 0 9
+epd nr1nkbqr/ppp3pp/5p2/3pp3/6b1/3PP3/PPP2PPP/NRBNKBQR w hb -
 perft 1 18
 perft 2 664
 perft 3 13306
@@ -1496,7 +1496,7 @@ perft 5 10658989
 perft 6 386307449
 
 id 166
-epd nrbnk1rb/ppp1pq1p/3p4/5pp1/2P1P3/1N6/PP1PKPPP/1RBN1QRB w gb - 2 9
+epd nrbnk1rb/ppp1pq1p/3p4/5pp1/2P1P3/1N6/PP1PKPPP/1RBN1QRB w gb -
 perft 1 25
 perft 2 966
 perft 3 24026
@@ -1505,7 +1505,7 @@ perft 5 23957242
 perft 6 913710194
 
 id 167
-epd 1brnbkqr/pppppp2/6p1/7p/1Pn5/P1NP4/2P1PPPP/NBR1BKQR w HChc - 0 9
+epd 1brnbkqr/pppppp2/6p1/7p/1Pn5/P1NP4/2P1PPPP/NBR1BKQR w HChc -
 perft 1 22
 perft 2 627
 perft 3 13760
@@ -1514,7 +1514,7 @@ perft 5 9627826
 perft 6 285900573
 
 id 168
-epd nrnbbk1r/p1pppppq/8/7p/1p6/P5PP/1PPPPPQ1/NRNBBK1R w HBhb - 2 9
+epd nrnbbk1r/p1pppppq/8/7p/1p6/P5PP/1PPPPPQ1/NRNBBK1R w HBhb -
 perft 1 29
 perft 2 888
 perft 3 26742
@@ -1523,7 +1523,7 @@ perft 5 27229468
 perft 6 930799376
 
 id 169
-epd n1nkb1qr/prppppbp/6p1/1p6/2P2P2/P7/1P1PP1PP/NRNKBBQR w HBh - 1 9
+epd n1nkb1qr/prppppbp/6p1/1p6/2P2P2/P7/1P1PP1PP/NRNKBBQR w HBh -
 perft 1 29
 perft 2 804
 perft 3 24701
@@ -1532,7 +1532,7 @@ perft 5 21952444
 perft 6 623156747
 
 id 170
-epd nr2bqrb/ppkpp1pp/1np5/5p1P/5P2/2P5/PP1PP1P1/NRNKBQRB w GB - 0 9
+epd nr2bqrb/ppkpp1pp/1np5/5p1P/5P2/2P5/PP1PP1P1/NRNKBQRB w GB -
 perft 1 22
 perft 2 530
 perft 3 13055
@@ -1541,7 +1541,7 @@ perft 5 9244693
 perft 6 264088392
 
 id 171
-epd nbr1kqbr/p3pppp/2ppn3/1p4P1/4P3/1P6/P1PP1P1P/NBRNKQBR w HChc - 1 9
+epd nbr1kqbr/p3pppp/2ppn3/1p4P1/4P3/1P6/P1PP1P1P/NBRNKQBR w HChc -
 perft 1 23
 perft 2 555
 perft 3 14291
@@ -1550,7 +1550,7 @@ perft 5 9692630
 perft 6 247479180
 
 id 172
-epd nr1bkqbr/1p1pp1pp/pnp2p2/8/6P1/P1PP4/1P2PP1P/NRNBKQBR w HBhb - 0 9
+epd nr1bkqbr/1p1pp1pp/pnp2p2/8/6P1/P1PP4/1P2PP1P/NRNBKQBR w HBhb -
 perft 1 22
 perft 2 565
 perft 3 13343
@@ -1559,7 +1559,7 @@ perft 5 9305533
 perft 6 268612479
 
 id 173
-epd nr1kqbbr/np2pppp/p1p5/1B1p1P2/8/4P3/PPPP2PP/NRNKQ1BR w HBhb - 0 9
+epd nr1kqbbr/np2pppp/p1p5/1B1p1P2/8/4P3/PPPP2PP/NRNKQ1BR w HBhb -
 perft 1 32
 perft 2 730
 perft 3 23391
@@ -1568,7 +1568,7 @@ perft 5 18103280
 perft 6 454569900
 
 id 174
-epd nrnk1rbb/p1p2ppp/3pq3/Qp2p3/1P1P4/8/P1P1PPPP/NRN1KRBB w fb - 2 9
+epd nrnk1rbb/p1p2ppp/3pq3/Qp2p3/1P1P4/8/P1P1PPPP/NRN1KRBB w fb -
 perft 1 28
 perft 2 873
 perft 3 25683
@@ -1577,7 +1577,7 @@ perft 5 23868737
 perft 6 747991356
 
 id 175
-epd bbnrnkrq/pp1ppp1p/6p1/2p5/6P1/P5RP/1PPPPP2/BBNRNK1Q w Dgd - 3 9
+epd bbnrnkrq/pp1ppp1p/6p1/2p5/6P1/P5RP/1PPPPP2/BBNRNK1Q w Dgd -
 perft 1 37
 perft 2 1260
 perft 3 45060
@@ -1586,7 +1586,7 @@ perft 5 54843403
 perft 6 1898432768
 
 id 176
-epd bnrb1rkq/ppnpppp1/3Q4/2p4p/7P/N7/PPPPPPP1/B1RBNKR1 w GC - 2 9
+epd bnrb1rkq/ppnpppp1/3Q4/2p4p/7P/N7/PPPPPPP1/B1RBNKR1 w GC -
 perft 1 38
 perft 2 878
 perft 3 31944
@@ -1595,7 +1595,7 @@ perft 5 28784300
 perft 6 784569826
 
 id 177
-epd bnrnkbrq/p1ppppp1/1p5p/8/P2PP3/5P2/1PP3PP/BNRNKBRQ w GCgc - 1 9
+epd bnrnkbrq/p1ppppp1/1p5p/8/P2PP3/5P2/1PP3PP/BNRNKBRQ w GCgc -
 perft 1 26
 perft 2 617
 perft 3 16992
@@ -1604,7 +1604,7 @@ perft 5 11965544
 perft 6 311309576
 
 id 178
-epd bnrnkrqb/pp2p2p/2pp1pp1/8/P7/2PP1P2/1P2P1PP/BNRNKRQB w FCfc - 0 9
+epd bnrnkrqb/pp2p2p/2pp1pp1/8/P7/2PP1P2/1P2P1PP/BNRNKRQB w FCfc -
 perft 1 26
 perft 2 721
 perft 3 19726
@@ -1613,7 +1613,7 @@ perft 5 15966934
 perft 6 467132503
 
 id 179
-epd nbbrnkr1/1pppp1p1/p6q/P4p1p/8/5P2/1PPPP1PP/NBBRNRKQ w gd - 2 9
+epd nbbrnkr1/1pppp1p1/p6q/P4p1p/8/5P2/1PPPP1PP/NBBRNRKQ w gd -
 perft 1 18
 perft 2 556
 perft 3 10484
@@ -1622,7 +1622,7 @@ perft 5 6629293
 perft 6 202528241
 
 id 180
-epd nrb1nkrq/2pp1ppp/p4b2/1p2p3/P4B2/3P4/1PP1PPPP/NR1BNRKQ w gb - 0 9
+epd nrb1nkrq/2pp1ppp/p4b2/1p2p3/P4B2/3P4/1PP1PPPP/NR1BNRKQ w gb -
 perft 1 24
 perft 2 562
 perft 3 14017
@@ -1631,7 +1631,7 @@ perft 5 9227883
 perft 6 247634489
 
 id 181
-epd nrbnkbrq/p3p1pp/1p6/2pp1P2/8/3PP3/PPP2P1P/NRBNKBRQ w GBgb - 0 9
+epd nrbnkbrq/p3p1pp/1p6/2pp1P2/8/3PP3/PPP2P1P/NRBNKBRQ w GBgb -
 perft 1 31
 perft 2 746
 perft 3 24819
@@ -1640,7 +1640,7 @@ perft 5 21019301
 perft 6 542954168
 
 id 182
-epd nrbnkrqb/pppp1p1p/4p1p1/8/7P/2P1P3/PPNP1PP1/1RBNKRQB w FBfb - 0 9
+epd nrbnkrqb/pppp1p1p/4p1p1/8/7P/2P1P3/PPNP1PP1/1RBNKRQB w FBfb -
 perft 1 20
 perft 2 459
 perft 3 9998
@@ -1649,7 +1649,7 @@ perft 5 5760165
 perft 6 146614723
 
 id 183
-epd nbrn1krq/ppp1p2p/6b1/3p1pp1/8/4N1PP/PPPPPP2/NBR1BRKQ w gc - 1 9
+epd nbrn1krq/ppp1p2p/6b1/3p1pp1/8/4N1PP/PPPPPP2/NBR1BRKQ w gc -
 perft 1 27
 perft 2 835
 perft 3 23632
@@ -1658,7 +1658,7 @@ perft 5 22667987
 perft 6 760795567
 
 id 184
-epd nrnbbkrq/p1pp2pp/5p2/1p6/2P1pP1B/1P6/P2PP1PP/NRNB1KRQ w GBgb - 0 9
+epd nrnbbkrq/p1pp2pp/5p2/1p6/2P1pP1B/1P6/P2PP1PP/NRNB1KRQ w GBgb -
 perft 1 24
 perft 2 646
 perft 3 16102
@@ -1667,7 +1667,7 @@ perft 5 11489727
 perft 6 324948755
 
 id 185
-epd nrn1bbrq/1ppkppp1/p2p3p/8/1P3N2/4P3/P1PP1PPP/NR1KBBRQ w GB - 2 9
+epd nrn1bbrq/1ppkppp1/p2p3p/8/1P3N2/4P3/P1PP1PPP/NR1KBBRQ w GB -
 perft 1 32
 perft 2 591
 perft 3 18722
@@ -1676,7 +1676,7 @@ perft 5 12069159
 perft 6 269922838
 
 id 186
-epd n1krbrqb/1ppppppp/p7/8/4n3/P4P1P/1PPPPQP1/NRNKBR1B w FB - 2 9
+epd n1krbrqb/1ppppppp/p7/8/4n3/P4P1P/1PPPPQP1/NRNKBR1B w FB -
 perft 1 26
 perft 2 639
 perft 3 16988
@@ -1685,7 +1685,7 @@ perft 5 12167153
 perft 6 312633873
 
 id 187
-epd n1rnkrbq/1p1ppp1p/8/p1p1b1p1/3PQ1P1/4N3/PPP1PP1P/NBR1KRB1 w FCfc - 0 9
+epd n1rnkrbq/1p1ppp1p/8/p1p1b1p1/3PQ1P1/4N3/PPP1PP1P/NBR1KRB1 w FCfc -
 perft 1 35
 perft 2 1027
 perft 3 35731
@@ -1694,7 +1694,7 @@ perft 5 35738410
 perft 6 1060661628
 
 id 188
-epd nrnbkrbq/2pp1pp1/pp6/4p2p/P7/5PPP/1PPPP3/NRNBKRBQ w FBfb - 0 9
+epd nrnbkrbq/2pp1pp1/pp6/4p2p/P7/5PPP/1PPPP3/NRNBKRBQ w FBfb -
 perft 1 26
 perft 2 628
 perft 3 16731
@@ -1703,7 +1703,7 @@ perft 5 11920087
 perft 6 331498921
 
 id 189
-epd 1rnkrbbq/pp1p2pp/1n3p2/1Bp1p3/1P6/1N2P3/P1PP1PPP/1RNKR1BQ w EBeb - 0 9
+epd 1rnkrbbq/pp1p2pp/1n3p2/1Bp1p3/1P6/1N2P3/P1PP1PPP/1RNKR1BQ w EBeb -
 perft 1 33
 perft 2 992
 perft 3 32244
@@ -1712,7 +1712,7 @@ perft 5 31703749
 perft 6 980306735
 
 id 190
-epd nr1krqbb/p1ppppp1/8/1p5p/1Pn5/5P2/P1PPP1PP/NRNKRQBB w EBeb - 0 9
+epd nr1krqbb/p1ppppp1/8/1p5p/1Pn5/5P2/P1PPP1PP/NRNKRQBB w EBeb -
 perft 1 24
 perft 2 670
 perft 3 15985
@@ -1721,7 +1721,7 @@ perft 5 11371067
 perft 6 325556465
 
 id 191
-epd bbq1rkr1/1ppppppp/p1n2n2/8/2P2P2/1P6/PQ1PP1PP/BB1NRKNR w HEe - 3 9
+epd bbq1rkr1/1ppppppp/p1n2n2/8/2P2P2/1P6/PQ1PP1PP/BB1NRKNR w HEe -
 perft 1 32
 perft 2 794
 perft 3 26846
@@ -1730,7 +1730,7 @@ perft 5 24085223
 perft 6 645633370
 
 id 192
-epd b1nbrknr/1qppp1pp/p4p2/1p6/6P1/P2NP3/1PPP1P1P/BQ1BRKNR w HEhe - 1 9
+epd b1nbrknr/1qppp1pp/p4p2/1p6/6P1/P2NP3/1PPP1P1P/BQ1BRKNR w HEhe -
 perft 1 25
 perft 2 663
 perft 3 17138
@@ -1739,7 +1739,7 @@ perft 5 13157826
 perft 6 389603029
 
 id 193
-epd bqnrk1nr/pp2ppbp/6p1/2pp4/2P5/5P2/PPQPP1PP/B1NRKBNR w HDhd - 0 9
+epd bqnrk1nr/pp2ppbp/6p1/2pp4/2P5/5P2/PPQPP1PP/B1NRKBNR w HDhd -
 perft 1 26
 perft 2 850
 perft 3 22876
@@ -1748,7 +1748,7 @@ perft 5 21341087
 perft 6 719712622
 
 id 194
-epd bqnrknrb/1ppp1p1p/p7/6p1/1P2p3/P1PN4/3PPPPP/BQ1RKNRB w GDgd - 0 9
+epd bqnrknrb/1ppp1p1p/p7/6p1/1P2p3/P1PN4/3PPPPP/BQ1RKNRB w GDgd -
 perft 1 25
 perft 2 721
 perft 3 19290
@@ -1757,7 +1757,7 @@ perft 5 16391601
 perft 6 511725087
 
 id 195
-epd q1b1rknr/pp1pppp1/4n2p/2p1b3/1PP5/4P3/PQ1P1PPP/1BBNRKNR w HEhe - 1 9
+epd q1b1rknr/pp1pppp1/4n2p/2p1b3/1PP5/4P3/PQ1P1PPP/1BBNRKNR w HEhe -
 perft 1 32
 perft 2 975
 perft 3 32566
@@ -1766,7 +1766,7 @@ perft 5 32649943
 perft 6 962536105
 
 id 196
-epd qnbbrknr/1p1ppppp/8/p1p5/5P2/PP1P4/2P1P1PP/QNBBRKNR w HEhe - 0 9
+epd qnbbrknr/1p1ppppp/8/p1p5/5P2/PP1P4/2P1P1PP/QNBBRKNR w HEhe -
 perft 1 27
 perft 2 573
 perft 3 16331
@@ -1775,7 +1775,7 @@ perft 5 11562434
 perft 6 301166330
 
 id 197
-epd q1brkb1r/p1pppppp/np3B2/8/6n1/1P5N/P1PPPPPP/QN1RKB1R w HDhd - 0 9
+epd q1brkb1r/p1pppppp/np3B2/8/6n1/1P5N/P1PPPPPP/QN1RKB1R w HDhd -
 perft 1 32
 perft 2 984
 perft 3 31549
@@ -1784,7 +1784,7 @@ perft 5 32597704
 perft 6 1075429389
 
 id 198
-epd qn1rk1rb/p1pppppp/1p2n3/8/2b5/4NPP1/PPPPP1RP/QNBRK2B w Dgd - 4 9
+epd qn1rk1rb/p1pppppp/1p2n3/8/2b5/4NPP1/PPPPP1RP/QNBRK2B w Dgd -
 perft 1 22
 perft 2 802
 perft 3 19156
@@ -1793,7 +1793,7 @@ perft 5 17761431
 perft 6 650603534
 
 id 199
-epd qbnrbknr/ppp2p1p/8/3pp1p1/1PP1B3/5N2/P2PPPPP/Q1NRBK1R w HDhd - 0 9
+epd qbnrbknr/ppp2p1p/8/3pp1p1/1PP1B3/5N2/P2PPPPP/Q1NRBK1R w HDhd -
 perft 1 34
 perft 2 943
 perft 3 32506
@@ -1802,7 +1802,7 @@ perft 5 32523099
 perft 6 955802240
 
 id 200
-epd qnrbb1nr/pp1p1ppp/2p2k2/4p3/4P3/5PPP/PPPP4/QNRBBKNR w HC - 0 9
+epd qnrbb1nr/pp1p1ppp/2p2k2/4p3/4P3/5PPP/PPPP4/QNRBBKNR w HC -
 perft 1 20
 perft 2 460
 perft 3 10287
@@ -1811,7 +1811,7 @@ perft 5 5846781
 perft 6 140714047
 
 id 201
-epd qnr1bbnr/ppk1p1pp/3p4/2p2p2/8/2P5/PP1PPPPP/QNKRBBNR w - - 1 9
+epd qnr1bbnr/ppk1p1pp/3p4/2p2p2/8/2P5/PP1PPPPP/QNKRBBNR w - -
 perft 1 19
 perft 2 572
 perft 3 11834
@@ -1820,7 +1820,7 @@ perft 5 7994547
 perft 6 243724815
 
 id 202
-epd qnrkbnrb/1p1p1ppp/2p5/4p3/p7/N1BP4/PPP1PPPP/Q1R1KNRB w gc - 0 9
+epd qnrkbnrb/1p1p1ppp/2p5/4p3/p7/N1BP4/PPP1PPPP/Q1R1KNRB w gc -
 perft 1 27
 perft 2 579
 perft 3 16233
@@ -1829,7 +1829,7 @@ perft 5 10845146
 perft 6 268229097
 
 id 203
-epd qbnrkn1r/1pppp1p1/p3bp2/2BN3p/8/5P2/PPPPP1PP/QBNRK2R w HDhd - 0 9
+epd qbnrkn1r/1pppp1p1/p3bp2/2BN3p/8/5P2/PPPPP1PP/QBNRK2R w HDhd -
 perft 1 40
 perft 2 1027
 perft 3 38728
@@ -1838,7 +1838,7 @@ perft 5 38511307
 perft 6 1104094381
 
 id 204
-epd qnrbknbr/1pp2ppp/4p3/p6N/2p5/8/PPPPPPPP/Q1RBK1BR w HChc - 0 9
+epd qnrbknbr/1pp2ppp/4p3/p6N/2p5/8/PPPPPPPP/Q1RBK1BR w HChc -
 perft 1 22
 perft 2 510
 perft 3 11844
@@ -1847,7 +1847,7 @@ perft 5 7403327
 perft 6 200581103
 
 id 205
-epd 1qkrnbbr/p1pppppp/2n5/1p6/8/5NP1/PPPPPP1P/QNRK1BBR w HC - 4 9
+epd 1qkrnbbr/p1pppppp/2n5/1p6/8/5NP1/PPPPPP1P/QNRK1BBR w HC -
 perft 1 24
 perft 2 549
 perft 3 13987
@@ -1856,7 +1856,7 @@ perft 5 9396521
 perft 6 255676649
 
 id 206
-epd q1rknr1b/1ppppppb/2n5/p2B3p/8/1PN3P1/P1PPPP1P/Q1RKNRB1 w FCfc - 3 9
+epd q1rknr1b/1ppppppb/2n5/p2B3p/8/1PN3P1/P1PPPP1P/Q1RKNRB1 w FCfc -
 perft 1 31
 perft 2 924
 perft 3 28520
@@ -1865,7 +1865,7 @@ perft 5 27463479
 perft 6 847726572
 
 id 207
-epd bbnqrk1r/pp1pppp1/2p4p/8/6n1/1N1P1P2/PPP1P1PP/BBQ1RKNR w HEhe - 4 9
+epd bbnqrk1r/pp1pppp1/2p4p/8/6n1/1N1P1P2/PPP1P1PP/BBQ1RKNR w HEhe -
 perft 1 24
 perft 2 804
 perft 3 20147
@@ -1874,7 +1874,7 @@ perft 5 18024195
 perft 6 595947631
 
 id 208
-epd bn1brknr/ppp1p1pp/5p2/3p4/6qQ/3P3P/PPP1PPP1/BN1BRKNR w HEhe - 4 9
+epd bn1brknr/ppp1p1pp/5p2/3p4/6qQ/3P3P/PPP1PPP1/BN1BRKNR w HEhe -
 perft 1 25
 perft 2 854
 perft 3 22991
@@ -1883,7 +1883,7 @@ perft 5 20290974
 perft 6 600195008
 
 id 209
-epd 1nqrkbnr/2pp1ppp/pp2p3/3b4/2P5/N7/PP1PPPPP/B1QRKBNR w HDhd - 0 9
+epd 1nqrkbnr/2pp1ppp/pp2p3/3b4/2P5/N7/PP1PPPPP/B1QRKBNR w HDhd -
 perft 1 22
 perft 2 651
 perft 3 16173
@@ -1892,7 +1892,7 @@ perft 5 13133439
 perft 6 390886040
 
 id 210
-epd bnqrk1rb/1pp1pppp/p2p4/4n3/2PPP3/8/PP3PPP/BNQRKNRB w GDgd - 1 9
+epd bnqrk1rb/1pp1pppp/p2p4/4n3/2PPP3/8/PP3PPP/BNQRKNRB w GDgd -
 perft 1 30
 perft 2 950
 perft 3 28169
@@ -1901,7 +1901,7 @@ perft 5 27610213
 perft 6 880739164
 
 id 211
-epd nbb1rknr/1ppq1ppp/3p4/p3p3/4P3/1N2R3/PPPP1PPP/1BBQ1KNR w Hhe - 2 9
+epd nbb1rknr/1ppq1ppp/3p4/p3p3/4P3/1N2R3/PPPP1PPP/1BBQ1KNR w Hhe -
 perft 1 33
 perft 2 988
 perft 3 31293
@@ -1910,7 +1910,7 @@ perft 5 30894863
 perft 6 985384035
 
 id 212
-epd nqbbrknr/2ppp2p/pp4p1/5p2/7P/3P1P2/PPPBP1P1/NQ1BRKNR w HEhe - 0 9
+epd nqbbrknr/2ppp2p/pp4p1/5p2/7P/3P1P2/PPPBP1P1/NQ1BRKNR w HEhe -
 perft 1 27
 perft 2 492
 perft 3 13266
@@ -1919,7 +1919,7 @@ perft 5 7583292
 perft 6 175376176
 
 id 213
-epd 1qbrkb1r/pppppppp/8/3n4/4P1n1/PN6/1PPP1P1P/1QBRKBNR w HDhd - 3 9
+epd 1qbrkb1r/pppppppp/8/3n4/4P1n1/PN6/1PPP1P1P/1QBRKBNR w HDhd -
 perft 1 28
 perft 2 800
 perft 3 21982
@@ -1928,7 +1928,7 @@ perft 5 17313279
 perft 6 507140861
 
 id 214
-epd 1qbrknrb/1p1ppppp/1np5/8/p4P1P/4P1N1/PPPP2P1/NQBRK1RB w GDgd - 0 9
+epd 1qbrknrb/1p1ppppp/1np5/8/p4P1P/4P1N1/PPPP2P1/NQBRK1RB w GDgd -
 perft 1 21
 perft 2 482
 perft 3 10581
@@ -1937,7 +1937,7 @@ perft 5 6218644
 perft 6 168704845
 
 id 215
-epd nbqrbkr1/ppp1pppp/8/3p4/6n1/2P2PPN/PP1PP2P/NBQRBK1R w HDd - 1 9
+epd nbqrbkr1/ppp1pppp/8/3p4/6n1/2P2PPN/PP1PP2P/NBQRBK1R w HDd -
 perft 1 29
 perft 2 921
 perft 3 25748
@@ -1946,7 +1946,7 @@ perft 5 24138518
 perft 6 806554650
 
 id 216
-epd nqrb1knr/1ppbpp1p/p7/3p2p1/2P3P1/5P1P/PP1PP3/NQRBBKNR w HChc - 1 9
+epd nqrb1knr/1ppbpp1p/p7/3p2p1/2P3P1/5P1P/PP1PP3/NQRBBKNR w HChc -
 perft 1 31
 perft 2 803
 perft 3 25857
@@ -1955,7 +1955,7 @@ perft 5 21998733
 perft 6 583349773
 
 id 217
-epd 1qrkbbr1/pppp1ppp/1n3n2/4p3/5P2/1N6/PPPPP1PP/1QRKBBNR w HCc - 0 9
+epd 1qrkbbr1/pppp1ppp/1n3n2/4p3/5P2/1N6/PPPPP1PP/1QRKBBNR w HCc -
 perft 1 25
 perft 2 715
 perft 3 19118
@@ -1964,7 +1964,7 @@ perft 5 15514933
 perft 6 459533767
 
 id 218
-epd nqrkb1rb/pp2pppp/2p1n3/3p4/3PP1N1/8/PPP2PPP/NQRKB1RB w GCgc - 0 9
+epd nqrkb1rb/pp2pppp/2p1n3/3p4/3PP1N1/8/PPP2PPP/NQRKB1RB w GCgc -
 perft 1 26
 perft 2 795
 perft 3 21752
@@ -1973,7 +1973,7 @@ perft 5 19185851
 perft 6 616508881
 
 id 219
-epd nb1rknbr/pp2ppp1/8/2Bp3p/6P1/2P2P1q/PP1PP2P/NBQRKN1R w HDhd - 0 9
+epd nb1rknbr/pp2ppp1/8/2Bp3p/6P1/2P2P1q/PP1PP2P/NBQRKN1R w HDhd -
 perft 1 35
 perft 2 1391
 perft 3 43025
@@ -1982,7 +1982,7 @@ perft 5 53033675
 perft 6 2139267832
 
 id 220
-epd nqrbkn1r/pp1pp1pp/8/2p2p2/5P2/P3B2P/1PbPP1P1/NQRBKN1R w HChc - 0 9
+epd nqrbkn1r/pp1pp1pp/8/2p2p2/5P2/P3B2P/1PbPP1P1/NQRBKN1R w HChc -
 perft 1 23
 perft 2 758
 perft 3 19439
@@ -1991,7 +1991,7 @@ perft 5 18296195
 perft 6 628403401
 
 id 221
-epd nqrknbbr/pp1pppp1/7p/2p5/7P/1P1N4/P1PPPPPB/NQRK1B1R w HChc - 2 9
+epd nqrknbbr/pp1pppp1/7p/2p5/7P/1P1N4/P1PPPPPB/NQRK1B1R w HChc -
 perft 1 29
 perft 2 824
 perft 3 23137
@@ -2000,7 +2000,7 @@ perft 5 19429491
 perft 6 595493802
 
 id 222
-epd 1qrknrbb/B1p1pppp/8/1p1p4/2n2P2/1P6/P1PPP1PP/NQRKNR1B w FCfc - 0 9
+epd 1qrknrbb/B1p1pppp/8/1p1p4/2n2P2/1P6/P1PPP1PP/NQRKNR1B w FCfc -
 perft 1 28
 perft 2 771
 perft 3 20237
@@ -2009,7 +2009,7 @@ perft 5 16065378
 perft 6 483037840
 
 id 223
-epd bbnrqk1r/1ppppppp/8/7n/1p6/P6P/1BPPPPP1/1BNRQKNR w HDhd - 0 9
+epd bbnrqk1r/1ppppppp/8/7n/1p6/P6P/1BPPPPP1/1BNRQKNR w HDhd -
 perft 1 25
 perft 2 601
 perft 3 15471
@@ -2018,7 +2018,7 @@ perft 5 10697065
 perft 6 289472497
 
 id 224
-epd bnrbqknr/ppp3p1/3ppp1Q/7p/3P4/1P6/P1P1PPPP/BNRB1KNR w HChc - 0 9
+epd bnrbqknr/ppp3p1/3ppp1Q/7p/3P4/1P6/P1P1PPPP/BNRB1KNR w HChc -
 perft 1 32
 perft 2 845
 perft 3 26876
@@ -2027,7 +2027,7 @@ perft 5 23717883
 perft 6 682154649
 
 id 225
-epd bn1qkb1r/pprppppp/8/2p5/2PPP1n1/8/PPR2PPP/BN1QKBNR w Hh - 1 9
+epd bn1qkb1r/pprppppp/8/2p5/2PPP1n1/8/PPR2PPP/BN1QKBNR w Hh -
 perft 1 32
 perft 2 856
 perft 3 27829
@@ -2036,7 +2036,7 @@ perft 5 25245957
 perft 6 727424329
 
 id 226
-epd 1nrqknrb/p1pp1ppp/1p2p3/3N4/5P1P/5b2/PPPPP3/B1RQKNRB w GCgc - 2 9
+epd 1nrqknrb/p1pp1ppp/1p2p3/3N4/5P1P/5b2/PPPPP3/B1RQKNRB w GCgc -
 perft 1 33
 perft 2 873
 perft 3 27685
@@ -2045,7 +2045,7 @@ perft 5 25128076
 perft 6 745401024
 
 id 227
-epd nbbrqrk1/pppppppp/8/2N1n3/P7/6P1/1PPPPP1P/1BBRQKNR w HD - 3 9
+epd nbbrqrk1/pppppppp/8/2N1n3/P7/6P1/1PPPPP1P/1BBRQKNR w HD -
 perft 1 25
 perft 2 555
 perft 3 14339
@@ -2054,7 +2054,7 @@ perft 5 9153089
 perft 6 234841945
 
 id 228
-epd 1rbbqknr/1ppp1pp1/1n2p3/p6p/4P1P1/P6N/1PPP1P1P/NRBBQK1R w HBhb - 0 9
+epd 1rbbqknr/1ppp1pp1/1n2p3/p6p/4P1P1/P6N/1PPP1P1P/NRBBQK1R w HBhb -
 perft 1 25
 perft 2 693
 perft 3 18652
@@ -2063,7 +2063,7 @@ perft 5 15133381
 perft 6 439344945
 
 id 229
-epd nrq1kbnr/p1pbpppp/3p4/1p6/6P1/1N3N2/PPPPPP1P/1RBQKB1R w HBhb - 4 9
+epd nrq1kbnr/p1pbpppp/3p4/1p6/6P1/1N3N2/PPPPPP1P/1RBQKB1R w HBhb -
 perft 1 24
 perft 2 648
 perft 3 16640
@@ -2072,7 +2072,7 @@ perft 5 12871967
 perft 6 380436777
 
 id 230
-epd nr1qknr1/p1pppp1p/b5p1/1p6/8/P4PP1/1bPPP1RP/NRBQKN1B w Bgb - 0 9
+epd nr1qknr1/p1pppp1p/b5p1/1p6/8/P4PP1/1bPPP1RP/NRBQKN1B w Bgb -
 perft 1 18
 perft 2 533
 perft 3 11215
@@ -2081,7 +2081,7 @@ perft 5 7777833
 perft 6 234905172
 
 id 231
-epd nbrqbknr/1ppp2pp/8/4pp2/p2PP1P1/7N/PPP2P1P/NBRQBK1R w HChc - 0 9
+epd nbrqbknr/1ppp2pp/8/4pp2/p2PP1P1/7N/PPP2P1P/NBRQBK1R w HChc -
 perft 1 29
 perft 2 803
 perft 3 24416
@@ -2090,7 +2090,7 @@ perft 5 22305910
 perft 6 672322762
 
 id 232
-epd nr1b1k1r/ppp1pppp/2bp1n2/6P1/2P3q1/5P2/PP1PP2P/NRQBBKNR w HBhb - 1 9
+epd nr1b1k1r/ppp1pppp/2bp1n2/6P1/2P3q1/5P2/PP1PP2P/NRQBBKNR w HBhb -
 perft 1 27
 perft 2 1199
 perft 3 30908
@@ -2099,7 +2099,7 @@ perft 5 35121759
 perft 6 1418677099
 
 id 233
-epd nrqkbbnr/2pppp1p/p7/1p6/2P1Pp2/8/PPNP2PP/1RQKBBNR w HBhb - 0 9
+epd nrqkbbnr/2pppp1p/p7/1p6/2P1Pp2/8/PPNP2PP/1RQKBBNR w HBhb -
 perft 1 28
 perft 2 613
 perft 3 17874
@@ -2108,7 +2108,7 @@ perft 5 13097064
 perft 6 345294379
 
 id 234
-epd 1rqkbnrb/pp1ppp1p/1n4p1/B1p5/3PP3/4N3/PPP2PPP/NRQK2RB w GBgb - 0 9
+epd 1rqkbnrb/pp1ppp1p/1n4p1/B1p5/3PP3/4N3/PPP2PPP/NRQK2RB w GBgb -
 perft 1 33
 perft 2 723
 perft 3 23991
@@ -2117,7 +2117,7 @@ perft 5 19715083
 perft 6 535650233
 
 id 235
-epd nbrqkn1r/1pppp2p/5pp1/p2b4/5P2/P2PN3/1PP1P1PP/NBRQK1BR w HChc - 2 9
+epd nbrqkn1r/1pppp2p/5pp1/p2b4/5P2/P2PN3/1PP1P1PP/NBRQK1BR w HChc -
 perft 1 23
 perft 2 607
 perft 3 15482
@@ -2126,7 +2126,7 @@ perft 5 11026383
 perft 6 290708878
 
 id 236
-epd nrqbknbr/pp1pppp1/8/2p4p/P3PP2/8/1PPP2PP/NRQBKNBR w HBhb - 1 9
+epd nrqbknbr/pp1pppp1/8/2p4p/P3PP2/8/1PPP2PP/NRQBKNBR w HBhb -
 perft 1 26
 perft 2 700
 perft 3 19371
@@ -2135,7 +2135,7 @@ perft 5 16058815
 perft 6 485460242
 
 id 237
-epd nrqknbbr/p2pppp1/1pp5/6Qp/3P4/1P3P2/P1P1P1PP/NR1KNBBR w HBhb - 0 9
+epd nrqknbbr/p2pppp1/1pp5/6Qp/3P4/1P3P2/P1P1P1PP/NR1KNBBR w HBhb -
 perft 1 40
 perft 2 905
 perft 3 32932
@@ -2144,7 +2144,7 @@ perft 5 29263502
 perft 6 791963709
 
 id 238
-epd nrqknrbb/1p3ppp/p2p4/2p1p3/1P6/3PP1P1/P1P2P1P/NRQKNRBB w FBfb - 0 9
+epd nrqknrbb/1p3ppp/p2p4/2p1p3/1P6/3PP1P1/P1P2P1P/NRQKNRBB w FBfb -
 perft 1 29
 perft 2 780
 perft 3 22643
@@ -2153,7 +2153,7 @@ perft 5 19532077
 perft 6 593181101
 
 id 239
-epd 1bnrkqnr/p1pppp2/7p/1p4p1/4b3/7N/PPPP1PPP/BBNRKQ1R w HDhd - 0 9
+epd 1bnrkqnr/p1pppp2/7p/1p4p1/4b3/7N/PPPP1PPP/BBNRKQ1R w HDhd -
 perft 1 25
 perft 2 725
 perft 3 19808
@@ -2162,7 +2162,7 @@ perft 5 16661676
 perft 6 487354613
 
 id 240
-epd bnrbkq1r/pp2p1pp/5n2/2pp1p2/P7/N1PP4/1P2PPPP/B1RBKQNR w HChc - 1 9
+epd bnrbkq1r/pp2p1pp/5n2/2pp1p2/P7/N1PP4/1P2PPPP/B1RBKQNR w HChc -
 perft 1 24
 perft 2 745
 perft 3 18494
@@ -2171,7 +2171,7 @@ perft 5 15079602
 perft 6 488924040
 
 id 241
-epd 2rkqbnr/p1pppppp/2b5/1pn5/1P3P1Q/2B5/P1PPP1PP/1NRK1BNR w HChc - 3 9
+epd 2rkqbnr/p1pppppp/2b5/1pn5/1P3P1Q/2B5/P1PPP1PP/1NRK1BNR w HChc -
 perft 1 33
 perft 2 904
 perft 3 30111
@@ -2180,7 +2180,7 @@ perft 5 28194726
 perft 6 801757709
 
 id 242
-epd bnrkqnrb/2pppp2/8/pp4pp/1P5P/6P1/P1PPPPB1/BNRKQNR1 w GCgc - 0 9
+epd bnrkqnrb/2pppp2/8/pp4pp/1P5P/6P1/P1PPPPB1/BNRKQNR1 w GCgc -
 perft 1 34
 perft 2 1059
 perft 3 34090
@@ -2189,7 +2189,7 @@ perft 5 33195397
 perft 6 1036498304
 
 id 243
-epd 1bbrkq1r/pppp2pp/1n2pp1n/8/2PP4/1N4P1/PP2PP1P/1BBRKQNR w HDhd - 1 9
+epd 1bbrkq1r/pppp2pp/1n2pp1n/8/2PP4/1N4P1/PP2PP1P/1BBRKQNR w HDhd -
 perft 1 33
 perft 2 891
 perft 3 28907
@@ -2198,7 +2198,7 @@ perft 5 26970098
 perft 6 788040469
 
 id 244
-epd nrbbkqnr/1p2pp1p/p1p3p1/3p4/8/1PP5/P2PPPPP/NRBBKQNR w HBhb - 0 9
+epd nrbbkqnr/1p2pp1p/p1p3p1/3p4/8/1PP5/P2PPPPP/NRBBKQNR w HBhb -
 perft 1 21
 perft 2 567
 perft 3 13212
@@ -2207,7 +2207,7 @@ perft 5 9539687
 perft 6 284426039
 
 id 245
-epd 1rbkqbr1/ppp1pppp/1n5n/3p4/3P4/1PP3P1/P3PP1P/NRBKQBNR w HBb - 1 9
+epd 1rbkqbr1/ppp1pppp/1n5n/3p4/3P4/1PP3P1/P3PP1P/NRBKQBNR w HBb -
 perft 1 27
 perft 2 752
 perft 3 20686
@@ -2216,7 +2216,7 @@ perft 5 16986290
 perft 6 521817800
 
 id 246
-epd nrbkq1rb/1ppp1pp1/4p1n1/p6p/2PP4/5P2/PPK1P1PP/NRB1QNRB w gb - 0 9
+epd nrbkq1rb/1ppp1pp1/4p1n1/p6p/2PP4/5P2/PPK1P1PP/NRB1QNRB w gb -
 perft 1 35
 perft 2 697
 perft 3 23678
@@ -2225,7 +2225,7 @@ perft 5 16906409
 perft 6 390324794
 
 id 247
-epd nbrkbqnr/p2pp1p1/5p2/1pp4p/7P/3P2P1/PPP1PP2/NBKRBQNR w hc - 0 9
+epd nbrkbqnr/p2pp1p1/5p2/1pp4p/7P/3P2P1/PPP1PP2/NBKRBQNR w hc -
 perft 1 25
 perft 2 679
 perft 3 17223
@@ -2234,7 +2234,7 @@ perft 5 12879258
 perft 6 376652259
 
 id 248
-epd nrkb1qnr/ppppp1p1/6bp/5p2/1PP1P1P1/8/P2P1P1P/NRKBBQNR w HBhb - 1 9
+epd nrkb1qnr/ppppp1p1/6bp/5p2/1PP1P1P1/8/P2P1P1P/NRKBBQNR w HBhb -
 perft 1 32
 perft 2 761
 perft 3 24586
@@ -2243,7 +2243,7 @@ perft 5 20671433
 perft 6 568524724
 
 id 249
-epd nrk1bbnr/p1q1pppp/1ppp4/8/3P3P/4K3/PPP1PPP1/NR1QBBNR w hb - 0 9
+epd nrk1bbnr/p1q1pppp/1ppp4/8/3P3P/4K3/PPP1PPP1/NR1QBBNR w hb -
 perft 1 30
 perft 2 719
 perft 3 21683
@@ -2252,7 +2252,7 @@ perft 5 16278120
 perft 6 423649784
 
 id 250
-epd nrkqbr1b/1pppp1pp/5pn1/p6N/1P3P2/8/P1PPP1PP/NRKQB1RB w GBb - 0 9
+epd nrkqbr1b/1pppp1pp/5pn1/p6N/1P3P2/8/P1PPP1PP/NRKQB1RB w GBb -
 perft 1 26
 perft 2 494
 perft 3 13815
@@ -2261,7 +2261,7 @@ perft 5 8763742
 perft 6 206993496
 
 id 251
-epd nbrkq2r/pppp1bpp/4p1n1/5p2/7P/2P3N1/PP1PPPP1/NBKRQ1BR w hc - 0 9
+epd nbrkq2r/pppp1bpp/4p1n1/5p2/7P/2P3N1/PP1PPPP1/NBKRQ1BR w hc -
 perft 1 27
 perft 2 701
 perft 3 19536
@@ -2270,7 +2270,7 @@ perft 5 15394667
 perft 6 443506342
 
 id 252
-epd nrkbqnbr/2ppp2p/pp6/5pp1/P1P5/8/1P1PPPPP/NRKBQNBR w HBhb - 0 9
+epd nrkbqnbr/2ppp2p/pp6/5pp1/P1P5/8/1P1PPPPP/NRKBQNBR w HBhb -
 perft 1 21
 perft 2 487
 perft 3 11341
@@ -2279,7 +2279,7 @@ perft 5 7218486
 perft 6 193586674
 
 id 253
-epd nr1qnbbr/pk1pppp1/1pp4p/8/3P4/5P1P/PPP1P1P1/NRKQNBBR w HB - 0 9
+epd nr1qnbbr/pk1pppp1/1pp4p/8/3P4/5P1P/PPP1P1P1/NRKQNBBR w HB -
 perft 1 22
 perft 2 546
 perft 3 13615
@@ -2288,7 +2288,7 @@ perft 5 9587439
 perft 6 259830255
 
 id 254
-epd nrkq1rbb/pp1ppp1p/2pn4/8/PP3Pp1/7P/2PPP1P1/NRKQNRBB w FBfb - 0 9
+epd nrkq1rbb/pp1ppp1p/2pn4/8/PP3Pp1/7P/2PPP1P1/NRKQNRBB w FBfb -
 perft 1 26
 perft 2 839
 perft 3 22075
@@ -2297,7 +2297,7 @@ perft 5 19867117
 perft 6 658535326
 
 id 255
-epd b2rknqr/pp1ppppp/8/2P5/n7/P7/1PPNPPPb/BBNRK1QR w HDhd - 2 9
+epd b2rknqr/pp1ppppp/8/2P5/n7/P7/1PPNPPPb/BBNRK1QR w HDhd -
 perft 1 24
 perft 2 699
 perft 3 19523
@@ -2306,7 +2306,7 @@ perft 5 17734818
 perft 6 535094237
 
 id 256
-epd bnrbknqr/pp2p2p/2p3p1/3p1p2/8/3P4/PPPNPPPP/B1RBKNQR w HChc - 0 9
+epd bnrbknqr/pp2p2p/2p3p1/3p1p2/8/3P4/PPPNPPPP/B1RBKNQR w HChc -
 perft 1 23
 perft 2 580
 perft 3 14320
@@ -2315,7 +2315,7 @@ perft 5 10133092
 perft 6 288041554
 
 id 257
-epd bnrknb1r/pppp2pp/8/4pp2/6P1/3P3P/qPP1PPQ1/BNRKNB1R w HChc - 0 9
+epd bnrknb1r/pppp2pp/8/4pp2/6P1/3P3P/qPP1PPQ1/BNRKNB1R w HChc -
 perft 1 28
 perft 2 1100
 perft 3 31813
@@ -2324,7 +2324,7 @@ perft 5 36142423
 perft 6 1361341249
 
 id 258
-epd b1rknqrb/ppp1p1p1/2np1p1p/8/4N3/6PQ/PPPPPP1P/B1RKN1RB w GCgc - 0 9
+epd b1rknqrb/ppp1p1p1/2np1p1p/8/4N3/6PQ/PPPPPP1P/B1RKN1RB w GCgc -
 perft 1 36
 perft 2 629
 perft 3 23082
@@ -2333,7 +2333,7 @@ perft 5 16897544
 perft 6 367503974
 
 id 259
-epd nb1rknqr/pbppp2p/6p1/1p3p2/5P2/3KP3/PPPP2PP/NBBR1NQR w hd - 2 9
+epd nb1rknqr/pbppp2p/6p1/1p3p2/5P2/3KP3/PPPP2PP/NBBR1NQR w hd -
 perft 1 18
 perft 2 557
 perft 3 9779
@@ -2342,7 +2342,7 @@ perft 5 5822387
 perft 6 180936551
 
 id 260
-epd nr1bknqr/1ppb1ppp/p7/3pp3/B7/2P3NP/PP1PPPP1/NRB1K1QR w HBhb - 2 9
+epd nr1bknqr/1ppb1ppp/p7/3pp3/B7/2P3NP/PP1PPPP1/NRB1K1QR w HBhb -
 perft 1 28
 perft 2 688
 perft 3 19541
@@ -2351,7 +2351,7 @@ perft 5 15153092
 perft 6 425149249
 
 id 261
-epd nrbkn2r/pppp1pqp/4p1p1/8/3P2P1/P3B3/P1P1PP1P/NR1KNBQR w HBhb - 1 9
+epd nrbkn2r/pppp1pqp/4p1p1/8/3P2P1/P3B3/P1P1PP1P/NR1KNBQR w HBhb -
 perft 1 32
 perft 2 808
 perft 3 25578
@@ -2360,7 +2360,7 @@ perft 5 22094260
 perft 6 609377239
 
 id 262
-epd nrbknqrb/2p1ppp1/1p6/p2p2Bp/1P6/3P1P2/P1P1P1PP/NR1KNQRB w GBgb - 0 9
+epd nrbknqrb/2p1ppp1/1p6/p2p2Bp/1P6/3P1P2/P1P1P1PP/NR1KNQRB w GBgb -
 perft 1 30
 perft 2 625
 perft 3 18288
@@ -2369,7 +2369,7 @@ perft 5 12225742
 perft 6 301834282
 
 id 263
-epd nbr1knqr/1pp1p1pp/3p1pb1/8/7P/5P2/PPPPPQP1/NBRKBN1R w HC - 2 9
+epd nbr1knqr/1pp1p1pp/3p1pb1/8/7P/5P2/PPPPPQP1/NBRKBN1R w HC -
 perft 1 29
 perft 2 863
 perft 3 25767
@@ -2378,7 +2378,7 @@ perft 5 24965592
 perft 6 799182442
 
 id 264
-epd n1kbbnqr/prp2ppp/1p1p4/4p3/1P2P3/3P1B2/P1P2PPP/NRK1BNQR w HBh - 2 9
+epd n1kbbnqr/prp2ppp/1p1p4/4p3/1P2P3/3P1B2/P1P2PPP/NRK1BNQR w HBh -
 perft 1 26
 perft 2 653
 perft 3 17020
@@ -2387,7 +2387,7 @@ perft 5 12187583
 perft 6 336872952
 
 id 265
-epd nrknbbqr/pp3p1p/B3p1p1/2pp4/4P3/2N3P1/PPPP1P1P/NRK1B1QR w HBhb - 0 9
+epd nrknbbqr/pp3p1p/B3p1p1/2pp4/4P3/2N3P1/PPPP1P1P/NRK1B1QR w HBhb -
 perft 1 29
 perft 2 683
 perft 3 19755
@@ -2396,7 +2396,7 @@ perft 5 14684565
 perft 6 394951291
 
 id 266
-epd n1knbqrb/pr1p1ppp/Qp6/2p1p3/4P3/6P1/PPPP1P1P/NRKNB1RB w GBg - 2 9
+epd n1knbqrb/pr1p1ppp/Qp6/2p1p3/4P3/6P1/PPPP1P1P/NRKNB1RB w GBg -
 perft 1 31
 perft 2 552
 perft 3 17197
@@ -2405,7 +2405,7 @@ perft 5 11663330
 perft 6 283583340
 
 id 267
-epd nbrknqbr/p3p1pp/1p1p1p2/2p5/2Q1PP2/8/PPPP2PP/NBRKN1BR w HChc - 0 9
+epd nbrknqbr/p3p1pp/1p1p1p2/2p5/2Q1PP2/8/PPPP2PP/NBRKN1BR w HChc -
 perft 1 37
 perft 2 913
 perft 3 32470
@@ -2414,7 +2414,7 @@ perft 5 28899548
 perft 6 759875563
 
 id 268
-epd nrkb1qbr/pp1pppp1/5n2/7p/2p5/1N1NPP2/PPPP2PP/1RKB1QBR w HBhb - 0 9
+epd nrkb1qbr/pp1pppp1/5n2/7p/2p5/1N1NPP2/PPPP2PP/1RKB1QBR w HBhb -
 perft 1 25
 perft 2 712
 perft 3 18813
@@ -2423,7 +2423,7 @@ perft 5 15045589
 perft 6 445074372
 
 id 269
-epd nrk2bbr/pppqpppp/3p4/8/1P3nP1/3P4/P1P1PP1P/NRKNQBBR w HBhb - 1 9
+epd nrk2bbr/pppqpppp/3p4/8/1P3nP1/3P4/P1P1PP1P/NRKNQBBR w HBhb -
 perft 1 24
 perft 2 814
 perft 3 19954
@@ -2432,7 +2432,7 @@ perft 5 17603960
 perft 6 592121050
 
 id 270
-epd nrknqrbb/1p2ppp1/2pp4/Q6p/P2P3P/8/1PP1PPP1/NRKN1RBB w FBfb - 0 9
+epd nrknqrbb/1p2ppp1/2pp4/Q6p/P2P3P/8/1PP1PPP1/NRKN1RBB w FBfb -
 perft 1 34
 perft 2 513
 perft 3 16111
@@ -2441,7 +2441,7 @@ perft 5 9569590
 perft 6 206509331
 
 id 271
-epd bbnrk1rq/pp2p1pp/2ppn3/5p2/8/3NNP1P/PPPPP1P1/BB1RK1RQ w GDgd - 1 9
+epd bbnrk1rq/pp2p1pp/2ppn3/5p2/8/3NNP1P/PPPPP1P1/BB1RK1RQ w GDgd -
 perft 1 28
 perft 2 697
 perft 3 20141
@@ -2450,7 +2450,7 @@ perft 5 15301879
 perft 6 410843713
 
 id 272
-epd bnrbknrq/ppppp2p/6p1/5p2/4QPP1/8/PPPPP2P/BNRBKNR1 w GCgc - 0 9
+epd bnrbknrq/ppppp2p/6p1/5p2/4QPP1/8/PPPPP2P/BNRBKNR1 w GCgc -
 perft 1 37
 perft 2 901
 perft 3 32612
@@ -2459,7 +2459,7 @@ perft 5 31385912
 perft 6 903831981
 
 id 273
-epd bnkrnbrq/ppppp1p1/B6p/5p2/8/4P3/PPPP1PPP/BNKRN1RQ w - - 0 9
+epd bnkrnbrq/ppppp1p1/B6p/5p2/8/4P3/PPPP1PPP/BNKRN1RQ w - -
 perft 1 26
 perft 2 417
 perft 3 11124
@@ -2468,7 +2468,7 @@ perft 5 5980981
 perft 6 133080499
 
 id 274
-epd bnrk1rqb/2pppp1p/3n4/pp4p1/3Q1P2/2N3P1/PPPPP2P/B1RKNR1B w FCfc - 0 9
+epd bnrk1rqb/2pppp1p/3n4/pp4p1/3Q1P2/2N3P1/PPPPP2P/B1RKNR1B w FCfc -
 perft 1 49
 perft 2 1655
 perft 3 74590
@@ -2477,7 +2477,7 @@ perft 5 107234294
 perft 6 3651608327
 
 id 275
-epd nbbrk1rq/pp2pppp/2pp4/8/2P2n2/6N1/PP1PP1PP/NBBRKR1Q w Dgd - 0 9
+epd nbbrk1rq/pp2pppp/2pp4/8/2P2n2/6N1/PP1PP1PP/NBBRKR1Q w Dgd -
 perft 1 28
 perft 2 960
 perft 3 26841
@@ -2486,7 +2486,7 @@ perft 5 26083252
 perft 6 846682836
 
 id 276
-epd nrbb2rq/pppk1ppp/4p1n1/3p4/6P1/1BP5/PP1PPPQP/NRB1KNR1 w GB - 0 9
+epd nrbb2rq/pppk1ppp/4p1n1/3p4/6P1/1BP5/PP1PPPQP/NRB1KNR1 w GB -
 perft 1 28
 perft 2 735
 perft 3 22048
@@ -2495,7 +2495,7 @@ perft 5 18588316
 perft 6 512048946
 
 id 277
-epd nrbk1brq/p1ppppp1/7p/1p6/4P1nP/P7/1PPP1PP1/NRBKNBRQ w GBgb - 0 9
+epd nrbk1brq/p1ppppp1/7p/1p6/4P1nP/P7/1PPP1PP1/NRBKNBRQ w GBgb -
 perft 1 22
 perft 2 572
 perft 3 12739
@@ -2504,7 +2504,7 @@ perft 5 8525056
 perft 6 247615348
 
 id 278
-epd nrbk1rqb/1pp2ppp/5n2/p2pp3/5B2/1N1P2P1/PPP1PP1P/1R1KNRQB w FBfb - 0 9
+epd nrbk1rqb/1pp2ppp/5n2/p2pp3/5B2/1N1P2P1/PPP1PP1P/1R1KNRQB w FBfb -
 perft 1 35
 perft 2 927
 perft 3 31559
@@ -2513,7 +2513,7 @@ perft 5 28465693
 perft 6 783048748
 
 id 279
-epd nbrkb1rq/p1pp1ppp/4n3/4p3/Pp6/6N1/1PPPPPPP/NBRKBRQ1 w Cgc - 0 9
+epd nbrkb1rq/p1pp1ppp/4n3/4p3/Pp6/6N1/1PPPPPPP/NBRKBRQ1 w Cgc -
 perft 1 20
 perft 2 456
 perft 3 10271
@@ -2522,7 +2522,7 @@ perft 5 6124625
 perft 6 154766108
 
 id 280
-epd nrkb1nrq/p2pp1pp/1pp2p2/7b/6PP/5P2/PPPPP2N/NRKBB1RQ w GBgb - 0 9
+epd nrkb1nrq/p2pp1pp/1pp2p2/7b/6PP/5P2/PPPPP2N/NRKBB1RQ w GBgb -
 perft 1 21
 perft 2 479
 perft 3 11152
@@ -2531,7 +2531,7 @@ perft 5 6696458
 perft 6 165253524
 
 id 281
-epd nr1nbbr1/pppkpp1p/6p1/3p4/P6P/1P6/1RPPPPP1/N1KNBBRQ w G - 1 9
+epd nr1nbbr1/pppkpp1p/6p1/3p4/P6P/1P6/1RPPPPP1/N1KNBBRQ w G -
 perft 1 20
 perft 2 498
 perft 3 11304
@@ -2540,7 +2540,7 @@ perft 5 7197322
 perft 6 188021682
 
 id 282
-epd nrknbrqb/3p1ppp/ppN1p3/8/6P1/8/PPPPPP1P/1RKNBRQB w FBfb - 0 9
+epd nrknbrqb/3p1ppp/ppN1p3/8/6P1/8/PPPPPP1P/1RKNBRQB w FBfb -
 perft 1 32
 perft 2 526
 perft 3 17267
@@ -2549,7 +2549,7 @@ perft 5 10755190
 perft 6 220058991
 
 id 283
-epd nbrkn1bq/p1pppr1p/1p6/5pp1/8/1N2PP2/PPPP2PP/1BKRNRBQ w c - 1 9
+epd nbrkn1bq/p1pppr1p/1p6/5pp1/8/1N2PP2/PPPP2PP/1BKRNRBQ w c -
 perft 1 19
 perft 2 491
 perft 3 10090
@@ -2558,7 +2558,7 @@ perft 5 6230616
 perft 6 180748649
 
 id 284
-epd nrkbnrbq/ppppppp1/8/8/7p/PP3P2/2PPPRPP/NRKBN1BQ w Bfb - 0 9
+epd nrkbnrbq/ppppppp1/8/8/7p/PP3P2/2PPPRPP/NRKBN1BQ w Bfb -
 perft 1 16
 perft 2 353
 perft 3 6189
@@ -2567,7 +2567,7 @@ perft 5 3008668
 perft 6 82706705
 
 id 285
-epd nrknrbbq/p4ppp/2p1p3/1p1p4/1P2P3/2P5/P1NP1PPP/1RKNRBBQ w EBeb - 0 9
+epd nrknrbbq/p4ppp/2p1p3/1p1p4/1P2P3/2P5/P1NP1PPP/1RKNRBBQ w EBeb -
 perft 1 29
 perft 2 728
 perft 3 21915
@@ -2576,7 +2576,7 @@ perft 5 18231199
 perft 6 511686397
 
 id 286
-epd nrknr1bb/pppp1p2/7p/2qPp1p1/8/1P5P/P1P1PPP1/NRKNRQBB w EBeb - 0 9
+epd nrknr1bb/pppp1p2/7p/2qPp1p1/8/1P5P/P1P1PPP1/NRKNRQBB w EBeb -
 perft 1 20
 perft 2 714
 perft 3 14336
@@ -2585,7 +2585,7 @@ perft 5 11132758
 perft 6 386064577
 
 id 287
-epd bbqnrrkn/ppp2p1p/3pp1p1/8/1PP5/2Q5/P1BPPPPP/B2NRKRN w GE - 0 9
+epd bbqnrrkn/ppp2p1p/3pp1p1/8/1PP5/2Q5/P1BPPPPP/B2NRKRN w GE -
 perft 1 39
 perft 2 593
 perft 3 23446
@@ -2594,7 +2594,7 @@ perft 5 16764576
 perft 6 346185058
 
 id 288
-epd bqn1rkrn/p1p2ppp/1p1p4/4p3/3PP2b/8/PPP2PPP/BQNBRKRN w GEge - 2 9
+epd bqn1rkrn/p1p2ppp/1p1p4/4p3/3PP2b/8/PPP2PPP/BQNBRKRN w GEge -
 perft 1 25
 perft 2 773
 perft 3 20042
@@ -2603,7 +2603,7 @@ perft 5 16632403
 perft 6 515838333
 
 id 289
-epd bqnrkb1n/p1p1pprp/3p4/1p2P1p1/2PP4/8/PP3PPP/BQNRKBRN w GDd - 1 9
+epd bqnrkb1n/p1p1pprp/3p4/1p2P1p1/2PP4/8/PP3PPP/BQNRKBRN w GDd -
 perft 1 31
 perft 2 860
 perft 3 28102
@@ -2612,7 +2612,7 @@ perft 5 27233018
 perft 6 813751250
 
 id 290
-epd bqr1krnb/ppppppp1/7p/3n4/1P4P1/P4N2/2PPPP1P/BQNRKR1B w FDf - 3 9
+epd bqr1krnb/ppppppp1/7p/3n4/1P4P1/P4N2/2PPPP1P/BQNRKR1B w FDf -
 perft 1 31
 perft 2 709
 perft 3 22936
@@ -2621,7 +2621,7 @@ perft 5 18608857
 perft 6 480498340
 
 id 291
-epd qbbn1krn/pp3ppp/4r3/2ppp3/P1P4P/8/1P1PPPP1/QBBNRKRN w GEg - 1 9
+epd qbbn1krn/pp3ppp/4r3/2ppp3/P1P4P/8/1P1PPPP1/QBBNRKRN w GEg -
 perft 1 26
 perft 2 775
 perft 3 21100
@@ -2630,7 +2630,7 @@ perft 5 18476807
 perft 6 582542257
 
 id 292
-epd qnbbrkrn/1p1pp2p/p7/2p2pp1/8/4P2P/PPPP1PPK/QNBBRR1N w ge - 0 9
+epd qnbbrkrn/1p1pp2p/p7/2p2pp1/8/4P2P/PPPP1PPK/QNBBRR1N w ge -
 perft 1 25
 perft 2 599
 perft 3 15139
@@ -2639,7 +2639,7 @@ perft 5 10260500
 perft 6 279222412
 
 id 293
-epd qnbrkbrn/1ppp2p1/p3p2p/5p2/P4P2/1P6/2PPP1PP/QNBRKBRN w GDgd - 0 9
+epd qnbrkbrn/1ppp2p1/p3p2p/5p2/P4P2/1P6/2PPP1PP/QNBRKBRN w GDgd -
 perft 1 27
 perft 2 588
 perft 3 16735
@@ -2648,7 +2648,7 @@ perft 5 11640416
 perft 6 293541380
 
 id 294
-epd 1nbrkrnb/p1pppp1p/1pq3p1/8/4P3/P1P4N/1P1P1PPP/QNBRKR1B w FDfd - 1 9
+epd 1nbrkrnb/p1pppp1p/1pq3p1/8/4P3/P1P4N/1P1P1PPP/QNBRKR1B w FDfd -
 perft 1 18
 perft 2 609
 perft 3 11789
@@ -2657,7 +2657,7 @@ perft 5 8604788
 perft 6 299491047
 
 id 295
-epd qb1r1krn/pppp2pp/1n2ppb1/4P3/7P/8/PPPP1PP1/QBNRBKRN w GDgd - 0 9
+epd qb1r1krn/pppp2pp/1n2ppb1/4P3/7P/8/PPPP1PP1/QBNRBKRN w GDgd -
 perft 1 20
 perft 2 578
 perft 3 12205
@@ -2666,7 +2666,7 @@ perft 5 7939483
 perft 6 229142178
 
 id 296
-epd qnr1bkrn/p3pppp/1bpp4/1p6/2P2PP1/8/PP1PPN1P/QNRBBKR1 w GCgc - 0 9
+epd qnr1bkrn/p3pppp/1bpp4/1p6/2P2PP1/8/PP1PPN1P/QNRBBKR1 w GCgc -
 perft 1 30
 perft 2 865
 perft 3 26617
@@ -2675,7 +2675,7 @@ perft 5 24475596
 perft 6 719842237
 
 id 297
-epd 1nkrbbrn/qppppppp/8/8/p2P4/1P5P/P1P1PPP1/QNKRBBRN w - - 0 9
+epd 1nkrbbrn/qppppppp/8/8/p2P4/1P5P/P1P1PPP1/QNKRBBRN w - -
 perft 1 27
 perft 2 672
 perft 3 18371
@@ -2684,7 +2684,7 @@ perft 5 14065717
 perft 6 410130412
 
 id 298
-epd 1qrkbrnb/ppp1p1pp/n2p4/5p2/4N3/8/PPPPPPPP/Q1RKBRNB w Ffc - 2 9
+epd 1qrkbrnb/ppp1p1pp/n2p4/5p2/4N3/8/PPPPPPPP/Q1RKBRNB w Ffc -
 perft 1 25
 perft 2 718
 perft 3 18573
@@ -2693,7 +2693,7 @@ perft 5 14404324
 perft 6 424279467
 
 id 299
-epd q1nrkrbn/pp1pppp1/2p4p/8/P7/5Pb1/BPPPPNPP/Q1NRKRB1 w FDfd - 0 9
+epd q1nrkrbn/pp1pppp1/2p4p/8/P7/5Pb1/BPPPPNPP/Q1NRKRB1 w FDfd -
 perft 1 22
 perft 2 558
 perft 3 12911
@@ -2702,7 +2702,7 @@ perft 5 8516966
 perft 6 228074630
 
 id 300
-epd qnrbkrbn/1p1p1pp1/p1p5/4p2p/8/3P1P2/PPP1P1PP/QNRBKRBN w FCfc - 0 9
+epd qnrbkrbn/1p1p1pp1/p1p5/4p2p/8/3P1P2/PPP1P1PP/QNRBKRBN w FCfc -
 perft 1 28
 perft 2 669
 perft 3 17713
@@ -2711,7 +2711,7 @@ perft 5 12055174
 perft 6 313276304
 
 id 301
-epd qnrkr1bn/p1pp1ppp/8/1p2p3/3P1P2/bP4P1/P1P1P2P/QNRKRBBN w ECec - 1 9
+epd qnrkr1bn/p1pp1ppp/8/1p2p3/3P1P2/bP4P1/P1P1P2P/QNRKRBBN w ECec -
 perft 1 23
 perft 2 845
 perft 3 20973
@@ -2720,7 +2720,7 @@ perft 5 19939053
 perft 6 718075943
 
 id 302
-epd q1krrnbb/p1p1pppp/2np4/1pB5/5P2/8/PPPPP1PP/QNRKRN1B w EC - 0 9
+epd q1krrnbb/p1p1pppp/2np4/1pB5/5P2/8/PPPPP1PP/QNRKRN1B w EC -
 perft 1 29
 perft 2 776
 perft 3 21966
@@ -2729,7 +2729,7 @@ perft 5 18110831
 perft 6 549019739
 
 id 303
-epd bbn1rkrn/pp1p1ppp/8/2p1p1q1/6P1/P7/BPPPPP1P/B1NQRKRN w GEge - 0 9
+epd bbn1rkrn/pp1p1ppp/8/2p1p1q1/6P1/P7/BPPPPP1P/B1NQRKRN w GEge -
 perft 1 26
 perft 2 936
 perft 3 25177
@@ -2738,7 +2738,7 @@ perft 5 24984621
 perft 6 901444251
 
 id 304
-epd bn1brkrn/pp1qpp1p/2p3p1/3p4/1PPP4/P7/4PPPP/BNQBRKRN w GEge - 1 9
+epd bn1brkrn/pp1qpp1p/2p3p1/3p4/1PPP4/P7/4PPPP/BNQBRKRN w GEge -
 perft 1 29
 perft 2 755
 perft 3 22858
@@ -2747,7 +2747,7 @@ perft 5 20128587
 perft 6 600207069
 
 id 305
-epd b2rkbrn/p1pppppp/qp6/8/1n6/2B2P2/P1PPP1PP/1NQRKBRN w GDgd - 0 9
+epd b2rkbrn/p1pppppp/qp6/8/1n6/2B2P2/P1PPP1PP/1NQRKBRN w GDgd -
 perft 1 24
 perft 2 878
 perft 3 21440
@@ -2756,7 +2756,7 @@ perft 5 20840078
 perft 6 775795187
 
 id 306
-epd b2rkrnb/pqp1pppp/n7/1p1p4/P7/N1P2N2/1P1PPPPP/B1QRKR1B w FDfd - 4 9
+epd b2rkrnb/pqp1pppp/n7/1p1p4/P7/N1P2N2/1P1PPPPP/B1QRKR1B w FDfd -
 perft 1 26
 perft 2 724
 perft 3 19558
@@ -2765,7 +2765,7 @@ perft 5 16109522
 perft 6 492933398
 
 id 307
-epd 1bbqrkrn/ppppp1p1/8/5p1p/P1n3P1/3P4/1PP1PP1P/NBBQRRKN w ge - 1 9
+epd 1bbqrkrn/ppppp1p1/8/5p1p/P1n3P1/3P4/1PP1PP1P/NBBQRRKN w ge -
 perft 1 25
 perft 2 678
 perft 3 17351
@@ -2774,7 +2774,7 @@ perft 5 12173245
 perft 6 329661421
 
 id 308
-epd nqb1rrkn/ppp1bppp/3pp3/8/3P4/1P6/PQP1PPPP/N1BBRRKN w - - 1 9
+epd nqb1rrkn/ppp1bppp/3pp3/8/3P4/1P6/PQP1PPPP/N1BBRRKN w - -
 perft 1 23
 perft 2 503
 perft 3 12465
@@ -2783,7 +2783,7 @@ perft 5 7626054
 perft 6 188215608
 
 id 309
-epd nqbrkbr1/p1pppppp/1p6/2N2n2/2P5/5P2/PP1PP1PP/1QBRKBRN w GDgd - 1 9
+epd nqbrkbr1/p1pppppp/1p6/2N2n2/2P5/5P2/PP1PP1PP/1QBRKBRN w GDgd -
 perft 1 29
 perft 2 688
 perft 3 20289
@@ -2792,7 +2792,7 @@ perft 5 15167248
 perft 6 399015237
 
 id 310
-epd nqbrkrn1/1ppppp2/6pp/p7/1P6/2Q5/P1PPPPPP/N1BRKRNB w FDfd - 0 9
+epd nqbrkrn1/1ppppp2/6pp/p7/1P6/2Q5/P1PPPPPP/N1BRKRNB w FDfd -
 perft 1 36
 perft 2 602
 perft 3 20985
@@ -2801,7 +2801,7 @@ perft 5 13706856
 perft 6 291708797
 
 id 311
-epd nbqrbrkn/pp1p1pp1/2p5/4p2p/2P3P1/1P3P2/P2PP2P/NBQRBKRN w GD - 0 9
+epd nbqrbrkn/pp1p1pp1/2p5/4p2p/2P3P1/1P3P2/P2PP2P/NBQRBKRN w GD -
 perft 1 34
 perft 2 655
 perft 3 22581
@@ -2810,7 +2810,7 @@ perft 5 16613630
 perft 6 379344541
 
 id 312
-epd nqrbbrkn/1p1pppp1/8/p1p4p/4P2P/1N4P1/PPPP1P2/1QRBBKRN w GC - 0 9
+epd nqrbbrkn/1p1pppp1/8/p1p4p/4P2P/1N4P1/PPPP1P2/1QRBBKRN w GC -
 perft 1 23
 perft 2 597
 perft 3 14468
@@ -2819,7 +2819,7 @@ perft 5 10096863
 perft 6 294900903
 
 id 313
-epd nqrkbbrn/2p1p1pp/pp1p1p2/8/P2N4/2P5/1P1PPPPP/1QRKBBRN w GCgc - 0 9
+epd nqrkbbrn/2p1p1pp/pp1p1p2/8/P2N4/2P5/1P1PPPPP/1QRKBBRN w GCgc -
 perft 1 32
 perft 2 744
 perft 3 23310
@@ -2828,7 +2828,7 @@ perft 5 17597164
 perft 6 428786656
 
 id 314
-epd n1krbrnb/q1pppppp/p7/1p6/3Q4/2P2P2/PP1PP1PP/N1RKBRNB w FC - 1 9
+epd n1krbrnb/q1pppppp/p7/1p6/3Q4/2P2P2/PP1PP1PP/N1RKBRNB w FC -
 perft 1 43
 perft 2 1038
 perft 3 41327
@@ -2837,7 +2837,7 @@ perft 5 40918952
 perft 6 1126603824
 
 id 315
-epd nb1rkrbn/p1pp1p1p/qp6/4p1p1/5PP1/P7/1PPPPB1P/NBQRKR1N w FDfd - 2 9
+epd nb1rkrbn/p1pp1p1p/qp6/4p1p1/5PP1/P7/1PPPPB1P/NBQRKR1N w FDfd -
 perft 1 26
 perft 2 645
 perft 3 16463
@@ -2846,7 +2846,7 @@ perft 5 11911314
 perft 6 342563372
 
 id 316
-epd nqr1krbn/pppp1ppp/8/8/3pP3/5P2/PPPb1NPP/NQRBKRB1 w FCfc - 3 9
+epd nqr1krbn/pppp1ppp/8/8/3pP3/5P2/PPPb1NPP/NQRBKRB1 w FCfc -
 perft 1 2
 perft 2 51
 perft 3 1047
@@ -2855,7 +2855,7 @@ perft 5 612305
 perft 6 17040200
 
 id 317
-epd n1rkrbbn/pqppppp1/7p/1p6/8/1NPP4/PP1KPPPP/1QR1RBBN w ec - 0 9
+epd n1rkrbbn/pqppppp1/7p/1p6/8/1NPP4/PP1KPPPP/1QR1RBBN w ec -
 perft 1 25
 perft 2 674
 perft 3 17553
@@ -2864,7 +2864,7 @@ perft 5 13421727
 perft 6 403551903
 
 id 318
-epd 1qrkrnbb/1p1p1ppp/pnp1p3/8/3PP3/P6P/1PP2PP1/NQRKRNBB w ECec - 0 9
+epd 1qrkrnbb/1p1p1ppp/pnp1p3/8/3PP3/P6P/1PP2PP1/NQRKRNBB w ECec -
 perft 1 24
 perft 2 688
 perft 3 17342
@@ -2873,7 +2873,7 @@ perft 5 13322502
 perft 6 403441498
 
 id 319
-epd 1bnrqkrn/2ppppp1/p7/1p1b3p/3PP1P1/8/PPPQ1P1P/BBNR1KRN w GDgd - 1 9
+epd 1bnrqkrn/2ppppp1/p7/1p1b3p/3PP1P1/8/PPPQ1P1P/BBNR1KRN w GDgd -
 perft 1 35
 perft 2 925
 perft 3 32238
@@ -2882,7 +2882,7 @@ perft 5 30458921
 perft 6 824344087
 
 id 320
-epd bnrbqkr1/ppp2pp1/6n1/3pp2p/1P6/2N3N1/P1PPPPPP/B1RBQRK1 w gc - 0 9
+epd bnrbqkr1/ppp2pp1/6n1/3pp2p/1P6/2N3N1/P1PPPPPP/B1RBQRK1 w gc -
 perft 1 23
 perft 2 704
 perft 3 17345
@@ -2891,7 +2891,7 @@ perft 5 14154852
 perft 6 450893738
 
 id 321
-epd 1nrqkbrn/p1pppppp/8/1p1b4/P6P/5P2/1PPPP1P1/BNRQKBRN w GCgc - 1 9
+epd 1nrqkbrn/p1pppppp/8/1p1b4/P6P/5P2/1PPPP1P1/BNRQKBRN w GCgc -
 perft 1 19
 perft 2 505
 perft 3 10619
@@ -2900,7 +2900,7 @@ perft 5 6450025
 perft 6 175593967
 
 id 322
-epd b1rqkrnb/ppppppp1/8/6p1/3n4/NP6/P1PPPP1P/B1RQKRNB w FCfc - 0 9
+epd b1rqkrnb/ppppppp1/8/6p1/3n4/NP6/P1PPPP1P/B1RQKRNB w FCfc -
 perft 1 25
 perft 2 614
 perft 3 15578
@@ -2909,7 +2909,7 @@ perft 5 10391021
 perft 6 259629603
 
 id 323
-epd nbbrqkrn/ppp3p1/3pp3/5p1p/1P2P3/P7/2PPQPPP/NBBR1KRN w GDgd - 0 9
+epd nbbrqkrn/ppp3p1/3pp3/5p1p/1P2P3/P7/2PPQPPP/NBBR1KRN w GDgd -
 perft 1 30
 perft 2 833
 perft 3 25719
@@ -2918,7 +2918,7 @@ perft 5 22873901
 perft 6 649556666
 
 id 324
-epd nr1bqrk1/ppp1pppp/6n1/3pP3/8/5PQb/PPPP2PP/NRBB1KRN w GB - 3 9
+epd nr1bqrk1/ppp1pppp/6n1/3pP3/8/5PQb/PPPP2PP/NRBB1KRN w GB -
 perft 1 26
 perft 2 734
 perft 3 20161
@@ -2927,7 +2927,7 @@ perft 5 17199594
 perft 6 512134836
 
 id 325
-epd 1rbqkbr1/ppppp1pp/1n6/4np2/3P1P2/6P1/PPPQP2P/NRB1KBRN w GBgb - 1 9
+epd 1rbqkbr1/ppppp1pp/1n6/4np2/3P1P2/6P1/PPPQP2P/NRB1KBRN w GBgb -
 perft 1 27
 perft 2 662
 perft 3 17897
@@ -2936,7 +2936,7 @@ perft 5 13038519
 perft 6 338365642
 
 id 326
-epd nr1qkr1b/ppp1pp1p/4bn2/3p2p1/4P3/1Q6/PPPP1PPP/NRB1KRNB w FBfb - 4 9
+epd nr1qkr1b/ppp1pp1p/4bn2/3p2p1/4P3/1Q6/PPPP1PPP/NRB1KRNB w FBfb -
 perft 1 33
 perft 2 939
 perft 3 30923
@@ -2945,7 +2945,7 @@ perft 5 30995969
 perft 6 991509814
 
 id 327
-epd nb1qbkrn/pprp1pp1/7p/2p1pB2/Q1PP4/8/PP2PPPP/N1R1BKRN w GCg - 2 9
+epd nb1qbkrn/pprp1pp1/7p/2p1pB2/Q1PP4/8/PP2PPPP/N1R1BKRN w GCg -
 perft 1 47
 perft 2 1128
 perft 3 50723
@@ -2954,7 +2954,7 @@ perft 5 56747878
 perft 6 1560584212
 
 id 328
-epd nrqb1rkn/pp2pppp/2bp4/2p5/6P1/2P3N1/PP1PPP1P/NRQBBRK1 w - - 3 9
+epd nrqb1rkn/pp2pppp/2bp4/2p5/6P1/2P3N1/PP1PPP1P/NRQBBRK1 w - -
 perft 1 24
 perft 2 828
 perft 3 21148
@@ -2963,7 +2963,7 @@ perft 5 19506135
 perft 6 668969549
 
 id 329
-epd nrq1bbrn/ppkpp2p/2p3p1/P4p2/8/4P1N1/1PPP1PPP/NRQKBBR1 w GB - 0 9
+epd nrq1bbrn/ppkpp2p/2p3p1/P4p2/8/4P1N1/1PPP1PPP/NRQKBBR1 w GB -
 perft 1 25
 perft 2 525
 perft 3 13533
@@ -2972,7 +2972,7 @@ perft 5 8250997
 perft 6 201795680
 
 id 330
-epd Br1kbrn1/pqpppp2/8/6pp/3b2P1/1N6/PPPPPP1P/1RQKBRN1 w FBfb - 3 9
+epd Br1kbrn1/pqpppp2/8/6pp/3b2P1/1N6/PPPPPP1P/1RQKBRN1 w FBfb -
 perft 1 20
 perft 2 790
 perft 3 18175
@@ -2981,7 +2981,7 @@ perft 5 17735648
 perft 6 669854148
 
 id 331
-epd nbrqkrbn/2p1p1pp/p7/1p1p1p2/4P1P1/5P2/PPPP3P/NBRQKRBN w FCfc - 0 9
+epd nbrqkrbn/2p1p1pp/p7/1p1p1p2/4P1P1/5P2/PPPP3P/NBRQKRBN w FCfc -
 perft 1 29
 perft 2 771
 perft 3 22489
@@ -2990,7 +2990,7 @@ perft 5 19192982
 perft 6 591335970
 
 id 332
-epd 1rqbkrbn/1ppppp1p/1n6/p1N3p1/8/2P4P/PP1PPPP1/1RQBKRBN w FBfb - 0 9
+epd 1rqbkrbn/1ppppp1p/1n6/p1N3p1/8/2P4P/PP1PPPP1/1RQBKRBN w FBfb -
 perft 1 29
 perft 2 502
 perft 3 14569
@@ -2999,7 +2999,7 @@ perft 5 8652810
 perft 6 191762235
 
 id 333
-epd 1rqkrbbn/ppnpp1pp/8/2p5/6p1/3P4/PPP1PPPP/NRK1RBBN w eb - 0 9
+epd 1rqkrbbn/ppnpp1pp/8/2p5/6p1/3P4/PPP1PPPP/NRK1RBBN w eb -
 perft 1 19
 perft 2 531
 perft 3 10812
@@ -3008,7 +3008,7 @@ perft 5 6506674
 perft 6 184309316
 
 id 334
-epd nrqkrnbb/p1pp2pp/5p2/4P3/2p5/4N3/PP1PP1PP/NRQKR1BB w EBeb - 0 9
+epd nrqkrnbb/p1pp2pp/5p2/4P3/2p5/4N3/PP1PP1PP/NRQKR1BB w EBeb -
 perft 1 26
 perft 2 800
 perft 3 23256
@@ -3017,7 +3017,7 @@ perft 5 23952941
 perft 6 809841274
 
 id 335
-epd bbnrkqrn/pp3pp1/4p2p/2pp4/4P1P1/1PB5/P1PP1P1P/1BNRKQRN w GDgd - 0 9
+epd bbnrkqrn/pp3pp1/4p2p/2pp4/4P1P1/1PB5/P1PP1P1P/1BNRKQRN w GDgd -
 perft 1 33
 perft 2 915
 perft 3 30536
@@ -3026,7 +3026,7 @@ perft 5 29602610
 perft 6 881898159
 
 id 336
-epd bnrbkqr1/1p2pppp/6n1/p1pp4/7P/P3P3/1PPPKPP1/BNRB1QRN w gc - 0 9
+epd bnrbkqr1/1p2pppp/6n1/p1pp4/7P/P3P3/1PPPKPP1/BNRB1QRN w gc -
 perft 1 19
 perft 2 457
 perft 3 9332
@@ -3035,7 +3035,7 @@ perft 5 5356253
 perft 6 144653627
 
 id 337
-epd b1rkqbrn/pp1p2pp/2n1p3/2p2p2/3P2PP/8/PPP1PP2/BNKRQBRN w gc - 0 9
+epd b1rkqbrn/pp1p2pp/2n1p3/2p2p2/3P2PP/8/PPP1PP2/BNKRQBRN w gc -
 perft 1 30
 perft 2 985
 perft 3 30831
@@ -3044,7 +3044,7 @@ perft 5 32684185
 perft 6 1080607773
 
 id 338
-epd b1rkqrnb/2ppppp1/np6/p6p/1P6/P2P3P/2P1PPP1/BNRKQRNB w FCfc - 0 9
+epd b1rkqrnb/2ppppp1/np6/p6p/1P6/P2P3P/2P1PPP1/BNRKQRNB w FCfc -
 perft 1 26
 perft 2 692
 perft 3 18732
@@ -3053,7 +3053,7 @@ perft 5 14561181
 perft 6 413226841
 
 id 339
-epd nbbrkqrn/1ppp1p2/p6p/4p1p1/5P2/1P5P/P1PPPNP1/NBBRKQR1 w GDgd - 0 9
+epd nbbrkqrn/1ppp1p2/p6p/4p1p1/5P2/1P5P/P1PPPNP1/NBBRKQR1 w GDgd -
 perft 1 22
 perft 2 561
 perft 3 13222
@@ -3062,7 +3062,7 @@ perft 5 9307003
 perft 6 273928315
 
 id 340
-epd nrbbkqrn/p1pppppp/8/1p6/4P3/7Q/PPPP1PPP/NRBBK1RN w GBgb - 0 9
+epd nrbbkqrn/p1pppppp/8/1p6/4P3/7Q/PPPP1PPP/NRBBK1RN w GBgb -
 perft 1 38
 perft 2 769
 perft 3 28418
@@ -3071,7 +3071,7 @@ perft 5 23091070
 perft 6 560139600
 
 id 341
-epd nrbkqbrn/1pppp2p/8/p4pp1/P4PQ1/8/1PPPP1PP/NRBK1BRN w GBgb - 0 9
+epd nrbkqbrn/1pppp2p/8/p4pp1/P4PQ1/8/1PPPP1PP/NRBK1BRN w GBgb -
 perft 1 23
 perft 2 507
 perft 3 13067
@@ -3080,7 +3080,7 @@ perft 5 8887567
 perft 6 237475184
 
 id 342
-epd nr1kqr1b/pp2pppp/5n2/2pp4/P5b1/5P2/1PPPPRPP/NRBK1QNB w Bfb - 2 9
+epd nr1kqr1b/pp2pppp/5n2/2pp4/P5b1/5P2/1PPPPRPP/NRBK1QNB w Bfb -
 perft 1 18
 perft 2 626
 perft 3 12386
@@ -3089,7 +3089,7 @@ perft 5 9465555
 perft 6 335004239
 
 id 343
-epd nbkrbqrn/1pppppp1/8/4P2p/pP6/P7/2PP1PPP/NBRKBQRN w GC - 0 9
+epd nbkrbqrn/1pppppp1/8/4P2p/pP6/P7/2PP1PPP/NBRKBQRN w GC -
 perft 1 22
 perft 2 329
 perft 3 8475
@@ -3098,7 +3098,7 @@ perft 5 4160034
 perft 6 82875306
 
 id 344
-epd nrkb1qrn/pp1pp1pp/8/5p1b/P1p4P/6N1/1PPPPPP1/NRKBBQR1 w GBgb - 2 9
+epd nrkb1qrn/pp1pp1pp/8/5p1b/P1p4P/6N1/1PPPPPP1/NRKBBQR1 w GBgb -
 perft 1 16
 perft 2 479
 perft 3 9037
@@ -3107,7 +3107,7 @@ perft 5 5862341
 perft 6 184959796
 
 id 345
-epd 1rkq1brn/ppppp1pp/1n6/3b1p2/3N3P/5P2/PPPPP1P1/1RKQBBRN w GBgb - 3 9
+epd 1rkq1brn/ppppp1pp/1n6/3b1p2/3N3P/5P2/PPPPP1P1/1RKQBBRN w GBgb -
 perft 1 23
 perft 2 614
 perft 3 15324
@@ -3116,7 +3116,7 @@ perft 5 11090645
 perft 6 313526088
 
 id 346
-epd nrk1brnb/pp1ppppp/2p5/3q4/5P2/PP6/1KPPP1PP/NR1QBRNB w fb - 1 9
+epd nrk1brnb/pp1ppppp/2p5/3q4/5P2/PP6/1KPPP1PP/NR1QBRNB w fb -
 perft 1 25
 perft 2 942
 perft 3 21765
@@ -3125,7 +3125,7 @@ perft 5 19318837
 perft 6 685549171
 
 id 347
-epd nbrkqr1n/1pppp2p/p4pp1/2Bb4/5P2/6P1/PPPPP2P/NBRKQ1RN w Cfc - 2 9
+epd nbrkqr1n/1pppp2p/p4pp1/2Bb4/5P2/6P1/PPPPP2P/NBRKQ1RN w Cfc -
 perft 1 30
 perft 2 841
 perft 3 24775
@@ -3134,7 +3134,7 @@ perft 5 20145765
 perft 6 557578726
 
 id 348
-epd n1kbqrbn/2p1pppp/1r6/pp1p4/P7/3P4/1PP1PPPP/NRKBQRBN w FBf - 2 9
+epd n1kbqrbn/2p1pppp/1r6/pp1p4/P7/3P4/1PP1PPPP/NRKBQRBN w FBf -
 perft 1 21
 perft 2 591
 perft 3 14101
@@ -3143,7 +3143,7 @@ perft 5 10295086
 perft 6 292131422
 
 id 349
-epd nrkqrbb1/ppp1pppp/3p4/8/4P3/2Pn1P2/PP4PP/NRKQRBBN w EBeb - 0 9
+epd nrkqrbb1/ppp1pppp/3p4/8/4P3/2Pn1P2/PP4PP/NRKQRBBN w EBeb -
 perft 1 4
 perft 2 88
 perft 3 3090
@@ -3152,7 +3152,7 @@ perft 5 2640555
 perft 6 66958031
 
 id 350
-epd nrkqrnbb/ppppp1p1/7p/1P3p2/3P4/2P5/P3PPPP/NRKQRNBB w EBeb - 0 9
+epd nrkqrnbb/ppppp1p1/7p/1P3p2/3P4/2P5/P3PPPP/NRKQRNBB w EBeb -
 perft 1 29
 perft 2 689
 perft 3 21091
@@ -3161,7 +3161,7 @@ perft 5 16226660
 perft 6 408570219
 
 id 351
-epd bbnr1rqn/pp2pkpp/2pp1p2/8/4P1P1/8/PPPP1P1P/BBNRKRQN w FD - 0 9
+epd bbnr1rqn/pp2pkpp/2pp1p2/8/4P1P1/8/PPPP1P1P/BBNRKRQN w FD -
 perft 1 21
 perft 2 463
 perft 3 11135
@@ -3170,7 +3170,7 @@ perft 5 6826249
 perft 6 165025370
 
 id 352
-epd bnrbk1qn/1pppprpp/8/p4p1P/6P1/3P4/PPP1PP2/BNRBKRQN w FCc - 0 9
+epd bnrbk1qn/1pppprpp/8/p4p1P/6P1/3P4/PPP1PP2/BNRBKRQN w FCc -
 perft 1 22
 perft 2 459
 perft 3 11447
@@ -3179,7 +3179,7 @@ perft 5 7371098
 perft 6 190583454
 
 id 353
-epd 1nrkrbqn/p1pp1ppp/4p3/1p6/1PP5/6PB/P2PPPbP/BNRKR1QN w ECec - 0 9
+epd 1nrkrbqn/p1pp1ppp/4p3/1p6/1PP5/6PB/P2PPPbP/BNRKR1QN w ECec -
 perft 1 30
 perft 2 931
 perft 3 29012
@@ -3188,7 +3188,7 @@ perft 5 28412902
 perft 6 869228014
 
 id 354
-epd b1rkr1nb/pppppqp1/n4B2/7p/8/1P4P1/P1PPPP1P/1NKRRQNB w ec - 1 9
+epd b1rkr1nb/pppppqp1/n4B2/7p/8/1P4P1/P1PPPP1P/1NKRRQNB w ec -
 perft 1 36
 perft 2 934
 perft 3 31790
@@ -3197,7 +3197,7 @@ perft 5 30392925
 perft 6 952871799
 
 id 355
-epd nbbrkrqn/p1ppp1p1/8/1p3p1p/2P3PP/8/PP1PPPQ1/NBBRKR1N w FDfd - 0 9
+epd nbbrkrqn/p1ppp1p1/8/1p3p1p/2P3PP/8/PP1PPPQ1/NBBRKR1N w FDfd -
 perft 1 34
 perft 2 938
 perft 3 31848
@@ -3206,7 +3206,7 @@ perft 5 31185844
 perft 6 944483246
 
 id 356
-epd 1rbbkrqn/ppp1pp2/1n1p2p1/7p/P3P1P1/3P4/1PP2P1P/NRBBKRQN w FBfb - 0 9
+epd 1rbbkrqn/ppp1pp2/1n1p2p1/7p/P3P1P1/3P4/1PP2P1P/NRBBKRQN w FBfb -
 perft 1 26
 perft 2 646
 perft 3 18083
@@ -3215,7 +3215,7 @@ perft 5 14006203
 perft 6 384101783
 
 id 357
-epd nrbkrbq1/Qpppp1pp/2n5/5p2/P4P2/6N1/1PPPP1PP/NRBKRB2 w EBeb - 1 9
+epd nrbkrbq1/Qpppp1pp/2n5/5p2/P4P2/6N1/1PPPP1PP/NRBKRB2 w EBeb -
 perft 1 27
 perft 2 619
 perft 3 16713
@@ -3224,7 +3224,7 @@ perft 5 11718463
 perft 6 313794027
 
 id 358
-epd 1rbkr1nb/pppp1qpp/1n6/4pp2/1PP1P3/8/PB1P1PPP/NR1KRQNB w EBeb - 1 9
+epd 1rbkr1nb/pppp1qpp/1n6/4pp2/1PP1P3/8/PB1P1PPP/NR1KRQNB w EBeb -
 perft 1 32
 perft 2 1029
 perft 3 32970
@@ -3233,7 +3233,7 @@ perft 5 35483796
 perft 6 1181835398
 
 id 359
-epd nbrk1rqn/p1ppp2p/1p6/5ppb/8/1N2P2P/PPPP1PP1/1BKRBRQN w fc - 0 9
+epd nbrk1rqn/p1ppp2p/1p6/5ppb/8/1N2P2P/PPPP1PP1/1BKRBRQN w fc -
 perft 1 18
 perft 2 594
 perft 3 12350
@@ -3242,7 +3242,7 @@ perft 5 9329122
 perft 6 315021712
 
 id 360
-epd nrkbbrqn/3pppp1/7p/ppp5/P7/1N5P/1PPPPPP1/1RKBBRQN w FBfb - 0 9
+epd nrkbbrqn/3pppp1/7p/ppp5/P7/1N5P/1PPPPPP1/1RKBBRQN w FBfb -
 perft 1 19
 perft 2 417
 perft 3 9026
@@ -3251,7 +3251,7 @@ perft 5 5236331
 perft 6 137024458
 
 id 361
-epd nrkr1bqn/ppp1pppp/3p4/1b6/7P/P7/1PPPPPP1/NRKRBBQN w DBdb - 1 9
+epd nrkr1bqn/ppp1pppp/3p4/1b6/7P/P7/1PPPPPP1/NRKRBBQN w DBdb -
 perft 1 17
 perft 2 457
 perft 3 9083
@@ -3260,7 +3260,7 @@ perft 5 5503579
 perft 6 150091997
 
 id 362
-epd nrkrbqnb/p4ppp/1p2p3/2pp4/6P1/2P2N2/PPNPPP1P/1RKRBQ1B w DBdb - 0 9
+epd nrkrbqnb/p4ppp/1p2p3/2pp4/6P1/2P2N2/PPNPPP1P/1RKRBQ1B w DBdb -
 perft 1 27
 perft 2 755
 perft 3 21012
@@ -3269,7 +3269,7 @@ perft 5 17883987
 perft 6 547233320
 
 id 363
-epd nbkrr1bn/ppB2ppp/4p3/2qp4/4P3/5P2/PPPP2PP/NBRKRQ1N w EC - 1 9
+epd nbkrr1bn/ppB2ppp/4p3/2qp4/4P3/5P2/PPPP2PP/NBRKRQ1N w EC -
 perft 1 37
 perft 2 1473
 perft 3 51939
@@ -3278,7 +3278,7 @@ perft 5 68070015
 perft 6 2490912491
 
 id 364
-epd n1kbrqbn/p1pp1pp1/4p2p/2B5/1r3P2/8/PPPPP1PP/NRKBRQ1N w EBe - 2 9
+epd n1kbrqbn/p1pp1pp1/4p2p/2B5/1r3P2/8/PPPPP1PP/NRKBRQ1N w EBe -
 perft 1 30
 perft 2 1029
 perft 3 30874
@@ -3287,7 +3287,7 @@ perft 5 32318550
 perft 6 1106487743
 
 id 365
-epd nrkrqbbn/2pppp1p/8/pp6/1P1P2p1/P5P1/2P1PP1P/NRKRQBBN w DBdb - 0 9
+epd nrkrqbbn/2pppp1p/8/pp6/1P1P2p1/P5P1/2P1PP1P/NRKRQBBN w DBdb -
 perft 1 22
 perft 2 421
 perft 3 10034
@@ -3296,7 +3296,7 @@ perft 5 5754555
 perft 6 141245633
 
 id 366
-epd nrkr1nbb/1ppp2pp/p3q3/4pp2/2P5/P3P3/1PKP1PPP/NR1RQNBB w db - 0 9
+epd nrkr1nbb/1ppp2pp/p3q3/4pp2/2P5/P3P3/1PKP1PPP/NR1RQNBB w db -
 perft 1 22
 perft 2 619
 perft 3 13953
@@ -3305,7 +3305,7 @@ perft 5 9905109
 perft 6 301403003
 
 id 367
-epd bbnrkrnq/1pp1p2p/6p1/p2p1p2/8/1P2P3/P1PP1PPP/BBNRKRNQ w FDfd - 0 9
+epd bbnrkrnq/1pp1p2p/6p1/p2p1p2/8/1P2P3/P1PP1PPP/BBNRKRNQ w FDfd -
 perft 1 27
 perft 2 805
 perft 3 21915
@@ -3314,7 +3314,7 @@ perft 5 19133881
 perft 6 620749189
 
 id 368
-epd bnrbkrn1/pp1ppp2/2p3pp/8/2Pq4/P4PP1/1P1PP2P/BNRBKRNQ w FCfc - 1 9
+epd bnrbkrn1/pp1ppp2/2p3pp/8/2Pq4/P4PP1/1P1PP2P/BNRBKRNQ w FCfc -
 perft 1 20
 perft 2 770
 perft 3 16593
@@ -3323,7 +3323,7 @@ perft 5 13581691
 perft 6 456736500
 
 id 369
-epd b1rkrbnq/1pp1pppp/2np4/p5N1/8/1P2P3/P1PP1PPP/BNRKRB1Q w ECec - 0 9
+epd b1rkrbnq/1pp1pppp/2np4/p5N1/8/1P2P3/P1PP1PPP/BNRKRB1Q w ECec -
 perft 1 37
 perft 2 740
 perft 3 27073
@@ -3332,7 +3332,7 @@ perft 5 21156664
 perft 6 485803600
 
 id 370
-epd b1krrnqb/pp1ppp1p/n1p3p1/2N5/6P1/8/PPPPPP1P/B1RKRNQB w EC - 0 9
+epd b1krrnqb/pp1ppp1p/n1p3p1/2N5/6P1/8/PPPPPP1P/B1RKRNQB w EC -
 perft 1 34
 perft 2 850
 perft 3 28494
@@ -3341,7 +3341,7 @@ perft 5 25360295
 perft 6 698159474
 
 id 371
-epd 1bbr1rnq/ppppkppp/8/3np3/4P3/3P4/PPP1KPPP/NBBRR1NQ w - - 1 9
+epd 1bbr1rnq/ppppkppp/8/3np3/4P3/3P4/PPP1KPPP/NBBRR1NQ w - -
 perft 1 27
 perft 2 704
 perft 3 18290
@@ -3350,7 +3350,7 @@ perft 5 12817011
 perft 6 341026662
 
 id 372
-epd nrbbk1nq/p1p1prpp/1p6/N2p1p2/P7/8/1PPPPPPP/R1BBKRNQ w Fb - 2 9
+epd nrbbk1nq/p1p1prpp/1p6/N2p1p2/P7/8/1PPPPPPP/R1BBKRNQ w Fb -
 perft 1 23
 perft 2 552
 perft 3 13710
@@ -3359,7 +3359,7 @@ perft 5 9236564
 perft 6 248469879
 
 id 373
-epd 1rbkrb1q/1pppp1pp/1n5n/p4p2/P3P3/1P6/2PPNPPP/NRBKRB1Q w EBeb - 1 9
+epd 1rbkrb1q/1pppp1pp/1n5n/p4p2/P3P3/1P6/2PPNPPP/NRBKRB1Q w EBeb -
 perft 1 22
 perft 2 415
 perft 3 10198
@@ -3368,7 +3368,7 @@ perft 5 5735644
 perft 6 135295774
 
 id 374
-epd nrbkr1qb/1pp1pppp/6n1/p2p4/2P1P3/1N4N1/PP1P1PPP/1RBKR1QB w EBeb - 0 9
+epd nrbkr1qb/1pp1pppp/6n1/p2p4/2P1P3/1N4N1/PP1P1PPP/1RBKR1QB w EBeb -
 perft 1 27
 perft 2 709
 perft 3 19126
@@ -3377,7 +3377,7 @@ perft 5 14192779
 perft 6 380516508
 
 id 375
-epd nbrkbrnq/p3p1pp/1pp2p2/3p4/1PP5/4P3/P1KP1PPP/NBR1BRNQ w fc - 0 9
+epd nbrkbrnq/p3p1pp/1pp2p2/3p4/1PP5/4P3/P1KP1PPP/NBR1BRNQ w fc -
 perft 1 24
 perft 2 715
 perft 3 18009
@@ -3386,7 +3386,7 @@ perft 5 14322279
 perft 6 427269976
 
 id 376
-epd nrk1brnq/pp1p1pp1/7p/b1p1p3/1P6/6P1/P1PPPPQP/NRKBBRN1 w FBfb - 2 9
+epd nrk1brnq/pp1p1pp1/7p/b1p1p3/1P6/6P1/P1PPPPQP/NRKBBRN1 w FBfb -
 perft 1 29
 perft 2 675
 perft 3 20352
@@ -3395,7 +3395,7 @@ perft 5 15316285
 perft 6 389051744
 
 id 377
-epd nrkr1bnq/1p2pppp/p2p4/1bp5/PP6/1R5N/2PPPPPP/N1KRBB1Q w Ddb - 2 9
+epd nrkr1bnq/1p2pppp/p2p4/1bp5/PP6/1R5N/2PPPPPP/N1KRBB1Q w Ddb -
 perft 1 27
 perft 2 744
 perft 3 20494
@@ -3404,7 +3404,7 @@ perft 5 16188945
 perft 6 458900901
 
 id 378
-epd nrk1b1qb/pppn1ppp/3rp3/3p4/2P3P1/3P4/PPN1PP1P/1RKRBNQB w DBb - 3 9
+epd nrk1b1qb/pppn1ppp/3rp3/3p4/2P3P1/3P4/PPN1PP1P/1RKRBNQB w DBb -
 perft 1 35
 perft 2 941
 perft 3 33203
@@ -3413,7 +3413,7 @@ perft 5 33150360
 perft 6 968024386
 
 id 379
-epd nb1rrnbq/ppkp1ppp/8/2p1p3/P7/1N2P3/1PPP1PPP/1BKRRNBQ w - - 1 9
+epd nb1rrnbq/ppkp1ppp/8/2p1p3/P7/1N2P3/1PPP1PPP/1BKRRNBQ w - -
 perft 1 19
 perft 2 451
 perft 3 9655
@@ -3422,7 +3422,7 @@ perft 5 5506897
 perft 6 139436165
 
 id 380
-epd nrkbrnbq/4pppp/1ppp4/p7/2P1P3/3P2N1/PP3PPP/NRKBR1BQ w EBeb - 0 9
+epd nrkbrnbq/4pppp/1ppp4/p7/2P1P3/3P2N1/PP3PPP/NRKBR1BQ w EBeb -
 perft 1 29
 perft 2 591
 perft 3 17132
@@ -3431,7 +3431,7 @@ perft 5 11245508
 perft 6 270967202
 
 id 381
-epd nrkrnbbq/3p1ppp/1p6/p1p1p3/3P2P1/P4Q2/1PP1PP1P/NRKRNBB1 w DBdb - 0 9
+epd nrkrnbbq/3p1ppp/1p6/p1p1p3/3P2P1/P4Q2/1PP1PP1P/NRKRNBB1 w DBdb -
 perft 1 38
 perft 2 792
 perft 3 28597
@@ -3440,7 +3440,7 @@ perft 5 22654797
 perft 6 540864616
 
 id 382
-epd nr1rnqbb/ppp1pp1p/3k2p1/3p4/1P5P/3P1N2/P1P1PPP1/NRKR1QBB w DB - 1 9
+epd nr1rnqbb/ppp1pp1p/3k2p1/3p4/1P5P/3P1N2/P1P1PPP1/NRKR1QBB w DB -
 perft 1 25
 perft 2 758
 perft 3 18547
@@ -3449,7 +3449,7 @@ perft 5 13890077
 perft 6 402109399
 
 id 383
-epd bbqrnnkr/1ppp1p1p/5p2/p5p1/P7/1P4P1/2PPPP1P/1BQRNNKR w HDhd - 0 9
+epd bbqrnnkr/1ppp1p1p/5p2/p5p1/P7/1P4P1/2PPPP1P/1BQRNNKR w HDhd -
 perft 1 20
 perft 2 322
 perft 3 7224
@@ -3458,7 +3458,7 @@ perft 5 3588435
 perft 6 82754650
 
 id 384
-epd bqrb2k1/pppppppr/5nnp/8/3P1P2/4P1N1/PPP3PP/BQRBN1KR w HCc - 1 9
+epd bqrb2k1/pppppppr/5nnp/8/3P1P2/4P1N1/PPP3PP/BQRBN1KR w HCc -
 perft 1 25
 perft 2 597
 perft 3 15872
@@ -3467,7 +3467,7 @@ perft 5 11162476
 perft 6 295682250
 
 id 385
-epd bqrnn1kr/1pppbppp/8/4p3/1p6/2P1N2P/P2PPPP1/BQR1NBKR w HChc - 1 9
+epd bqrnn1kr/1pppbppp/8/4p3/1p6/2P1N2P/P2PPPP1/BQR1NBKR w HChc -
 perft 1 34
 perft 2 921
 perft 3 31695
@@ -3476,7 +3476,7 @@ perft 5 30126510
 perft 6 850296236
 
 id 386
-epd bqr1nkr1/pppppp2/2n3p1/7p/1P1b1P2/8/PQP1P1PP/B1RNNKRB w GCgc - 0 9
+epd bqr1nkr1/pppppp2/2n3p1/7p/1P1b1P2/8/PQP1P1PP/B1RNNKRB w GCgc -
 perft 1 23
 perft 2 788
 perft 3 21539
@@ -3485,7 +3485,7 @@ perft 5 20849374
 perft 6 645694580
 
 id 387
-epd qbbrnn1r/1pppp1pk/p7/5p1p/P2P3P/3N4/1PP1PPP1/QBBR1NKR w HD - 0 9
+epd qbbrnn1r/1pppp1pk/p7/5p1p/P2P3P/3N4/1PP1PPP1/QBBR1NKR w HD -
 perft 1 34
 perft 2 713
 perft 3 24475
@@ -3494,7 +3494,7 @@ perft 5 19494094
 perft 6 482645160
 
 id 388
-epd qrbb2kr/p1pppppp/1p1n4/8/1P3n2/P7/Q1PPP1PP/1RBBNNKR w HBhb - 0 9
+epd qrbb2kr/p1pppppp/1p1n4/8/1P3n2/P7/Q1PPP1PP/1RBBNNKR w HBhb -
 perft 1 28
 perft 2 977
 perft 3 26955
@@ -3503,7 +3503,7 @@ perft 5 27802999
 perft 6 992109168
 
 id 389
-epd qrb2bkr/1pp1pppp/2np1n2/pN6/3P4/4B3/PPP1PPPP/QR2NBKR w HBhb - 0 9
+epd qrb2bkr/1pp1pppp/2np1n2/pN6/3P4/4B3/PPP1PPPP/QR2NBKR w HBhb -
 perft 1 27
 perft 2 730
 perft 3 20534
@@ -3512,7 +3512,7 @@ perft 5 17005916
 perft 6 507008968
 
 id 390
-epd qrbnnkrb/pp2pp1p/8/2pp2p1/7P/P1P5/QP1PPPP1/1RBNNKRB w GBgb - 0 9
+epd qrbnnkrb/pp2pp1p/8/2pp2p1/7P/P1P5/QP1PPPP1/1RBNNKRB w GBgb -
 perft 1 24
 perft 2 813
 perft 3 21142
@@ -3521,7 +3521,7 @@ perft 5 19615756
 perft 6 655850285
 
 id 391
-epd 1brnb1kr/p1pppppp/1p6/8/4q2n/1P2P1P1/PNPP1P1P/QBR1BNKR w HChc - 3 9
+epd 1brnb1kr/p1pppppp/1p6/8/4q2n/1P2P1P1/PNPP1P1P/QBR1BNKR w HChc -
 perft 1 17
 perft 2 734
 perft 3 13462
@@ -3530,7 +3530,7 @@ perft 5 11032633
 perft 6 416356876
 
 id 392
-epd 1rnbbnkr/1pp1pppp/1q1p4/p7/4P3/5PN1/PPPP1BPP/QRNB2KR w HBhb - 1 9
+epd 1rnbbnkr/1pp1pppp/1q1p4/p7/4P3/5PN1/PPPP1BPP/QRNB2KR w HBhb -
 perft 1 26
 perft 2 809
 perft 3 21764
@@ -3539,7 +3539,7 @@ perft 5 20292750
 perft 6 675408811
 
 id 393
-epd qrnnbb1Q/ppp1pk1p/3p2p1/5p2/PP6/5P2/2PPP1PP/1RNNBBKR w HB - 0 9
+epd qrnnbb1Q/ppp1pk1p/3p2p1/5p2/PP6/5P2/2PPP1PP/1RNNBBKR w HB -
 perft 1 37
 perft 2 751
 perft 3 27902
@@ -3548,7 +3548,7 @@ perft 5 22443036
 perft 6 515122176
 
 id 394
-epd qrnnbkrb/p3p1pp/3p1p2/1pp5/PP2P3/8/2PP1PPP/QRNNBRKB w gb - 0 9
+epd qrnnbkrb/p3p1pp/3p1p2/1pp5/PP2P3/8/2PP1PPP/QRNNBRKB w gb -
 perft 1 30
 perft 2 906
 perft 3 27955
@@ -3557,7 +3557,7 @@ perft 5 27658191
 perft 6 890966633
 
 id 395
-epd qbrnnkbr/1p2pp1p/p1p3p1/3p4/6P1/P1N4P/1PPPPP2/QBR1NKBR w HChc - 0 9
+epd qbrnnkbr/1p2pp1p/p1p3p1/3p4/6P1/P1N4P/1PPPPP2/QBR1NKBR w HChc -
 perft 1 26
 perft 2 701
 perft 3 18930
@@ -3566,7 +3566,7 @@ perft 5 14733245
 perft 6 416881799
 
 id 396
-epd qr1b1kbr/1p1ppppp/1n1n4/p1p5/4P3/5NPP/PPPP1P2/QRNB1KBR w HBhb - 1 9
+epd qr1b1kbr/1p1ppppp/1n1n4/p1p5/4P3/5NPP/PPPP1P2/QRNB1KBR w HBhb -
 perft 1 26
 perft 2 649
 perft 3 17235
@@ -3575,7 +3575,7 @@ perft 5 12367604
 perft 6 342165821
 
 id 397
-epd qrnnkb1r/1pppppp1/7p/p4b2/4P3/5P1P/PPPP2PR/QRNNKBB1 w Bhb - 1 9
+epd qrnnkb1r/1pppppp1/7p/p4b2/4P3/5P1P/PPPP2PR/QRNNKBB1 w Bhb -
 perft 1 34
 perft 2 941
 perft 3 31720
@@ -3584,7 +3584,7 @@ perft 5 30307554
 perft 6 888709821
 
 id 398
-epd qr1nkrbb/p2ppppp/1pp5/8/3Pn3/1NP3P1/PP2PP1P/QR1NKRBB w FBfb - 1 9
+epd qr1nkrbb/p2ppppp/1pp5/8/3Pn3/1NP3P1/PP2PP1P/QR1NKRBB w FBfb -
 perft 1 19
 perft 2 505
 perft 3 11107
@@ -3593,7 +3593,7 @@ perft 5 7046501
 perft 6 190414579
 
 id 399
-epd bbrqn1kr/1pppp1pp/4n3/5p2/p5P1/3P4/PPP1PPKP/BBRQNN1R w hc - 0 9
+epd bbrqn1kr/1pppp1pp/4n3/5p2/p5P1/3P4/PPP1PPKP/BBRQNN1R w hc -
 perft 1 24
 perft 2 573
 perft 3 12963
@@ -3602,7 +3602,7 @@ perft 5 8191054
 perft 6 227555387
 
 id 400
-epd brqb1nkr/pppppp1p/8/4N1pn/5P2/6P1/PPPPP2P/BRQB1NKR w HBhb - 0 9
+epd brqb1nkr/pppppp1p/8/4N1pn/5P2/6P1/PPPPP2P/BRQB1NKR w HBhb -
 perft 1 26
 perft 2 550
 perft 3 14338
@@ -3611,7 +3611,7 @@ perft 5 8903754
 perft 6 223437427
 
 id 401
-epd brqnn1kr/pp3ppp/2pbp3/3p4/8/2NPP3/PPP1BPPP/BRQ1N1KR w HBhb - 0 9
+epd brqnn1kr/pp3ppp/2pbp3/3p4/8/2NPP3/PPP1BPPP/BRQ1N1KR w HBhb -
 perft 1 27
 perft 2 780
 perft 3 20760
@@ -3620,7 +3620,7 @@ perft 5 16243731
 perft 6 463883447
 
 id 402
-epd brq1nkrb/ppp2ppp/8/n2pp2P/P7/4P3/1PPP1PP1/BRQNNKRB w GBgb - 1 9
+epd brq1nkrb/ppp2ppp/8/n2pp2P/P7/4P3/1PPP1PP1/BRQNNKRB w GBgb -
 perft 1 17
 perft 2 426
 perft 3 8295
@@ -3629,7 +3629,7 @@ perft 5 5048497
 perft 6 153986034
 
 id 403
-epd rbbqn1kr/pp2p1pp/6n1/2pp1p2/2P4P/P7/BP1PPPP1/R1BQNNKR w HAha - 0 9
+epd rbbqn1kr/pp2p1pp/6n1/2pp1p2/2P4P/P7/BP1PPPP1/R1BQNNKR w HAha -
 perft 1 27
 perft 2 916
 perft 3 25798
@@ -3638,7 +3638,7 @@ perft 5 26302461
 perft 6 924181432
 
 id 404
-epd 1qbbn1kr/1ppppppp/r3n3/8/p1P5/P7/1P1PPPPP/RQBBNNKR w HAh - 1 9
+epd 1qbbn1kr/1ppppppp/r3n3/8/p1P5/P7/1P1PPPPP/RQBBNNKR w HAh -
 perft 1 29
 perft 2 817
 perft 3 24530
@@ -3647,7 +3647,7 @@ perft 5 22147642
 perft 6 670707652
 
 id 405
-epd rqbnnbkr/ppp1ppp1/7p/3p4/PP6/7P/1NPPPPP1/RQB1NBKR w HAa - 1 9
+epd rqbnnbkr/ppp1ppp1/7p/3p4/PP6/7P/1NPPPPP1/RQB1NBKR w HAa -
 perft 1 23
 perft 2 572
 perft 3 14509
@@ -3656,7 +3656,7 @@ perft 5 10416981
 perft 6 288064942
 
 id 406
-epd r1bnnkrb/q1ppp1pp/p7/1p3pB1/2P1P3/3P4/PP3PPP/RQ1NNKRB w GAga - 2 9
+epd r1bnnkrb/q1ppp1pp/p7/1p3pB1/2P1P3/3P4/PP3PPP/RQ1NNKRB w GAga -
 perft 1 31
 perft 2 925
 perft 3 27776
@@ -3665,7 +3665,7 @@ perft 5 26316355
 perft 6 843078864
 
 id 407
-epd rbqnb1kr/ppppp1pp/5p2/5N2/7P/1n3P2/PPPPP1P1/RBQNB1KR w HAha - 1 9
+epd rbqnb1kr/ppppp1pp/5p2/5N2/7P/1n3P2/PPPPP1P1/RBQNB1KR w HAha -
 perft 1 32
 perft 2 864
 perft 3 27633
@@ -3674,7 +3674,7 @@ perft 5 24738875
 perft 6 707188107
 
 id 408
-epd rqnbbn1r/ppppppp1/6k1/8/6Pp/2PN4/PP1PPPKP/RQ1BBN1R w - - 0 9
+epd rqnbbn1r/ppppppp1/6k1/8/6Pp/2PN4/PP1PPPKP/RQ1BBN1R w - -
 perft 1 27
 perft 2 566
 perft 3 15367
@@ -3683,7 +3683,7 @@ perft 5 9714509
 perft 6 234622128
 
 id 409
-epd rqnnbbkr/p1p2pp1/1p1p3p/4p3/4NP2/6P1/PPPPP2P/RQN1BBKR w HAha - 0 9
+epd rqnnbbkr/p1p2pp1/1p1p3p/4p3/4NP2/6P1/PPPPP2P/RQN1BBKR w HAha -
 perft 1 27
 perft 2 631
 perft 3 17923
@@ -3692,7 +3692,7 @@ perft 5 13307890
 perft 6 356279813
 
 id 410
-epd 1qnnbrkb/rppp1ppp/p3p3/8/4P3/2PP1P2/PP4PP/RQNNBKRB w GA - 1 9
+epd 1qnnbrkb/rppp1ppp/p3p3/8/4P3/2PP1P2/PP4PP/RQNNBKRB w GA -
 perft 1 24
 perft 2 479
 perft 3 12135
@@ -3701,7 +3701,7 @@ perft 5 7204345
 perft 6 175460841
 
 id 411
-epd rbqnn1br/p1pppk1p/1p4p1/5p2/8/P1P2P2/1PBPP1PP/R1QNNKBR w HA - 0 9
+epd rbqnn1br/p1pppk1p/1p4p1/5p2/8/P1P2P2/1PBPP1PP/R1QNNKBR w HA -
 perft 1 31
 perft 2 756
 perft 3 23877
@@ -3710,7 +3710,7 @@ perft 5 20036784
 perft 6 554292502
 
 id 412
-epd rqnbnkbr/1ppppp2/p5p1/8/1P4p1/4PP2/P1PP3P/RQNBNKBR w HAha - 0 9
+epd rqnbnkbr/1ppppp2/p5p1/8/1P4p1/4PP2/P1PP3P/RQNBNKBR w HAha -
 perft 1 24
 perft 2 715
 perft 3 18536
@@ -3719,7 +3719,7 @@ perft 5 16013189
 perft 6 515078271
 
 id 413
-epd rq1nkbbr/1p2pppp/p2n4/2pp4/1P4P1/P2N4/2PPPP1P/RQ1NKBBR w HAha - 1 9
+epd rq1nkbbr/1p2pppp/p2n4/2pp4/1P4P1/P2N4/2PPPP1P/RQ1NKBBR w HAha -
 perft 1 27
 perft 2 694
 perft 3 19840
@@ -3728,7 +3728,7 @@ perft 5 16685687
 perft 6 494574415
 
 id 414
-epd r1nnkrbb/pp1pppp1/2p3q1/7p/8/1PPP3P/P3PPP1/RQNNKRBB w FAfa - 1 9
+epd r1nnkrbb/pp1pppp1/2p3q1/7p/8/1PPP3P/P3PPP1/RQNNKRBB w FAfa -
 perft 1 18
 perft 2 520
 perft 3 10808
@@ -3737,7 +3737,7 @@ perft 5 7508201
 perft 6 235103697
 
 id 415
-epd bbrnqk1r/pppp3p/6p1/4pp2/3P2P1/8/PPP1PP1P/BBRN1NKR w HC - 0 9
+epd bbrnqk1r/pppp3p/6p1/4pp2/3P2P1/8/PPP1PP1P/BBRN1NKR w HC -
 perft 1 22
 perft 2 566
 perft 3 12965
@@ -3746,7 +3746,7 @@ perft 5 8721079
 perft 6 259069471
 
 id 416
-epd brnb1nkr/pppqpp2/3p2pp/8/3PP3/1P6/PBP2PPP/1RNBQNKR w HBhb - 0 9
+epd brnb1nkr/pppqpp2/3p2pp/8/3PP3/1P6/PBP2PPP/1RNBQNKR w HBhb -
 perft 1 32
 perft 2 859
 perft 3 28517
@@ -3755,7 +3755,7 @@ perft 5 27734108
 perft 6 829785474
 
 id 417
-epd brnq1b1r/ppp1ppkp/3p1np1/8/8/5P1P/PPPPPKPR/BRNQNB2 w - - 0 9
+epd brnq1b1r/ppp1ppkp/3p1np1/8/8/5P1P/PPPPPKPR/BRNQNB2 w - -
 perft 1 21
 perft 2 511
 perft 3 10951
@@ -3764,7 +3764,7 @@ perft 5 6372681
 perft 6 167139732
 
 id 418
-epd brnq1rkb/1pppppp1/3n3p/p7/8/P4NP1/1PPPPPRP/BRNQ1K1B w B - 0 9
+epd brnq1rkb/1pppppp1/3n3p/p7/8/P4NP1/1PPPPPRP/BRNQ1K1B w B -
 perft 1 25
 perft 2 548
 perft 3 14049
@@ -3773,7 +3773,7 @@ perft 5 9015901
 perft 6 235249649
 
 id 419
-epd rbb1qnkr/p1ppp1pp/1p3p2/6n1/8/1PN1P2P/P1PP1PP1/RBB1QNKR w HAha - 0 9
+epd rbb1qnkr/p1ppp1pp/1p3p2/6n1/8/1PN1P2P/P1PP1PP1/RBB1QNKR w HAha -
 perft 1 25
 perft 2 673
 perft 3 16412
@@ -3782,7 +3782,7 @@ perft 5 12099119
 perft 6 361714466
 
 id 420
-epd rnbb1nkr/1ppp1ppp/4p3/p5q1/6P1/1PP5/PB1PPP1P/RN1BQNKR w HAha - 1 9
+epd rnbb1nkr/1ppp1ppp/4p3/p5q1/6P1/1PP5/PB1PPP1P/RN1BQNKR w HAha -
 perft 1 19
 perft 2 663
 perft 3 14149
@@ -3791,7 +3791,7 @@ perft 5 11491355
 perft 6 399135495
 
 id 421
-epd rnbqnbkr/1pp1p2p/3p1p2/p5p1/5PP1/2P5/PPNPP2P/RNBQ1BKR w HAha - 0 9
+epd rnbqnbkr/1pp1p2p/3p1p2/p5p1/5PP1/2P5/PPNPP2P/RNBQ1BKR w HAha -
 perft 1 24
 perft 2 647
 perft 3 16679
@@ -3800,7 +3800,7 @@ perft 5 12649636
 perft 6 361157611
 
 id 422
-epd rnb2krb/pppqppnp/8/3p2p1/1P4P1/7P/P1PPPPB1/RNBQNKR1 w GAga - 1 9
+epd rnb2krb/pppqppnp/8/3p2p1/1P4P1/7P/P1PPPPB1/RNBQNKR1 w GAga -
 perft 1 24
 perft 2 722
 perft 3 18749
@@ -3809,7 +3809,7 @@ perft 5 16609220
 perft 6 563558512
 
 id 423
-epd rbnqb1kr/pppn1pp1/3p3p/4p3/1P6/P7/R1PPPPPP/1BNQBNKR w Hha - 1 9
+epd rbnqb1kr/pppn1pp1/3p3p/4p3/1P6/P7/R1PPPPPP/1BNQBNKR w Hha -
 perft 1 20
 perft 2 538
 perft 3 12277
@@ -3818,7 +3818,7 @@ perft 5 8687621
 perft 6 255304141
 
 id 424
-epd rnqb1nkr/p1pbp1pp/8/1pPp1p2/P2P4/8/1P2PPPP/RNQBBNKR w HAha - 1 9
+epd rnqb1nkr/p1pbp1pp/8/1pPp1p2/P2P4/8/1P2PPPP/RNQBBNKR w HAha -
 perft 1 35
 perft 2 764
 perft 3 26952
@@ -3827,7 +3827,7 @@ perft 5 22592380
 perft 6 564255328
 
 id 425
-epd rnq1bbkr/1p1ppp1p/4n3/p1p3p1/P1PP4/8/RP2PPPP/1NQNBBKR w Hha - 0 9
+epd rnq1bbkr/1p1ppp1p/4n3/p1p3p1/P1PP4/8/RP2PPPP/1NQNBBKR w Hha -
 perft 1 29
 perft 2 709
 perft 3 21296
@@ -3836,7 +3836,7 @@ perft 5 17597398
 perft 6 506140370
 
 id 426
-epd 1nqnbkrb/1pppp2p/r7/p4pp1/3P4/8/PPPBPPPP/RNQNK1RB w g - 0 9
+epd 1nqnbkrb/1pppp2p/r7/p4pp1/3P4/8/PPPBPPPP/RNQNK1RB w g -
 perft 1 27
 perft 2 1028
 perft 3 28534
@@ -3845,7 +3845,7 @@ perft 5 30251988
 perft 6 1096869832
 
 id 427
-epd rbnqnkbr/p1pp1p1p/8/1p2p3/3P2pP/2P5/PP2PPP1/RBNQNKBR w HAha - 0 9
+epd rbnqnkbr/p1pp1p1p/8/1p2p3/3P2pP/2P5/PP2PPP1/RBNQNKBR w HAha -
 perft 1 32
 perft 2 832
 perft 3 27120
@@ -3854,7 +3854,7 @@ perft 5 24945574
 perft 6 724171581
 
 id 428
-epd rnq1nkbr/1p1p1ppp/2p1pb2/p7/7P/2P5/PPNPPPPB/RNQB1K1R w HAha - 2 9
+epd rnq1nkbr/1p1p1ppp/2p1pb2/p7/7P/2P5/PPNPPPPB/RNQB1K1R w HAha -
 perft 1 31
 perft 2 779
 perft 3 24010
@@ -3863,7 +3863,7 @@ perft 5 19919434
 perft 6 551494771
 
 id 429
-epd rnqnk1br/p1ppp1bp/1p3p2/6p1/4N3/P5P1/1PPPPP1P/R1QNKBBR w HAha - 2 9
+epd rnqnk1br/p1ppp1bp/1p3p2/6p1/4N3/P5P1/1PPPPP1P/R1QNKBBR w HAha -
 perft 1 25
 perft 2 717
 perft 3 19396
@@ -3872,7 +3872,7 @@ perft 5 16525239
 perft 6 507175842
 
 id 430
-epd rnq1krbb/p1p1pppp/8/1p1p4/1n5B/2N2P2/PPPPP1PP/RNQ1KR1B w FAfa - 0 9
+epd rnq1krbb/p1p1pppp/8/1p1p4/1n5B/2N2P2/PPPPP1PP/RNQ1KR1B w FAfa -
 perft 1 28
 perft 2 867
 perft 3 24029
@@ -3881,7 +3881,7 @@ perft 5 21112751
 perft 6 654808184
 
 id 431
-epd bbrnnqkr/1pp1pppp/3p4/p7/P3P3/7P/1PPP1PP1/BBRNNQKR w HChc - 0 9
+epd bbrnnqkr/1pp1pppp/3p4/p7/P3P3/7P/1PPP1PP1/BBRNNQKR w HChc -
 perft 1 24
 perft 2 405
 perft 3 11025
@@ -3890,7 +3890,7 @@ perft 5 6196438
 perft 6 131401224
 
 id 432
-epd brnbnqkr/p1ppp3/1p5p/5Pp1/5P2/3N4/PPPPP2P/BRNB1QKR w HBhb g6 0 9
+epd brnbnqkr/p1ppp3/1p5p/5Pp1/5P2/3N4/PPPPP2P/BRNB1QKR w HBhb g6
 perft 1 25
 perft 2 785
 perft 3 21402
@@ -3899,7 +3899,7 @@ perft 5 20687969
 perft 6 695850727
 
 id 433
-epd br1nqbkr/1ppppp2/pn6/6pp/2PP4/1N4P1/PP2PP1P/BR1NQBKR w HBhb - 0 9
+epd br1nqbkr/1ppppp2/pn6/6pp/2PP4/1N4P1/PP2PP1P/BR1NQBKR w HBhb -
 perft 1 25
 perft 2 596
 perft 3 16220
@@ -3908,7 +3908,7 @@ perft 5 12185361
 perft 6 337805606
 
 id 434
-epd 1rnnqkrb/p2ppp1p/1pp5/2N3p1/8/1P6/P1PPPPKP/BR1NQ1RB w gb - 0 9
+epd 1rnnqkrb/p2ppp1p/1pp5/2N3p1/8/1P6/P1PPPPKP/BR1NQ1RB w gb -
 perft 1 38
 perft 2 960
 perft 3 34831
@@ -3917,7 +3917,7 @@ perft 5 32490040
 perft 6 880403591
 
 id 435
-epd rbbnnqkr/pp3pp1/2p1p3/3p3p/3P3P/1PP5/P3PPP1/RBBNNQKR w HAha - 0 9
+epd rbbnnqkr/pp3pp1/2p1p3/3p3p/3P3P/1PP5/P3PPP1/RBBNNQKR w HAha -
 perft 1 30
 perft 2 785
 perft 3 23079
@@ -3926,7 +3926,7 @@ perft 5 19885037
 perft 6 599219582
 
 id 436
-epd rn1bnqkr/p1ppppp1/8/1p5p/P4P1P/3N4/1PPPP1b1/RNBB1QKR w HAha - 0 9
+epd rn1bnqkr/p1ppppp1/8/1p5p/P4P1P/3N4/1PPPP1b1/RNBB1QKR w HAha -
 perft 1 27
 perft 2 752
 perft 3 21735
@@ -3935,7 +3935,7 @@ perft 5 18862234
 perft 6 547415271
 
 id 437
-epd 1nbnqbkr/1p1p1ppp/r3p3/p1p5/P3P3/3Q4/1PPP1PPP/RNBN1BKR w HAh - 2 9
+epd 1nbnqbkr/1p1p1ppp/r3p3/p1p5/P3P3/3Q4/1PPP1PPP/RNBN1BKR w HAh -
 perft 1 33
 perft 2 721
 perft 3 24278
@@ -3944,7 +3944,7 @@ perft 5 19648535
 perft 6 496023732
 
 id 438
-epd rnbnqkrb/2pppppp/1p6/p7/1PP5/4N2P/P2PPPP1/RNB1QKRB w GAg - 0 9
+epd rnbnqkrb/2pppppp/1p6/p7/1PP5/4N2P/P2PPPP1/RNB1QKRB w GAg -
 perft 1 23
 perft 2 570
 perft 3 14225
@@ -3953,7 +3953,7 @@ perft 5 10022614
 perft 6 279545007
 
 id 439
-epd rbnnbq1r/ppppppkp/6p1/N7/4P3/P7/1PPP1PPP/RB1NBQKR w HA - 5 9
+epd rbnnbq1r/ppppppkp/6p1/N7/4P3/P7/1PPP1PPP/RB1NBQKR w HA -
 perft 1 27
 perft 2 620
 perft 3 18371
@@ -3962,7 +3962,7 @@ perft 5 13909432
 perft 6 349478320
 
 id 440
-epd r1nbbqkr/pppppp1p/8/8/1n3Pp1/3N1QP1/PPPPP2P/RN1BB1KR w HAha - 0 9
+epd r1nbbqkr/pppppp1p/8/8/1n3Pp1/3N1QP1/PPPPP2P/RN1BB1KR w HAha -
 perft 1 31
 perft 2 791
 perft 3 25431
@@ -3971,7 +3971,7 @@ perft 5 22408813
 perft 6 636779732
 
 id 441
-epd rnq1bbkr/pp1p1ppp/2pnp3/8/7P/1QP5/PP1PPPPR/RNN1BBK1 w Aha - 2 9
+epd rnq1bbkr/pp1p1ppp/2pnp3/8/7P/1QP5/PP1PPPPR/RNN1BBK1 w Aha -
 perft 1 28
 perft 2 559
 perft 3 16838
@@ -3980,7 +3980,7 @@ perft 5 12242780
 perft 6 315431511
 
 id 442
-epd rnnqbrkb/2ppppp1/1p1N4/p6p/4P3/8/PPPP1PPP/R1NQBKRB w GA - 0 9
+epd rnnqbrkb/2ppppp1/1p1N4/p6p/4P3/8/PPPP1PPP/R1NQBKRB w GA -
 perft 1 32
 perft 2 638
 perft 3 20591
@@ -3989,7 +3989,7 @@ perft 5 14395828
 perft 6 331782223
 
 id 443
-epd rbnnq1br/pppp1kp1/4pp2/7p/PP6/2PP4/4PPPP/RBNNQKBR w HA - 0 9
+epd rbnnq1br/pppp1kp1/4pp2/7p/PP6/2PP4/4PPPP/RBNNQKBR w HA -
 perft 1 21
 perft 2 521
 perft 3 12201
@@ -3998,7 +3998,7 @@ perft 5 8239159
 perft 6 227346638
 
 id 444
-epd rnnbqkbr/p2ppp2/7p/1pp3p1/2P2N2/8/PP1PPPPP/RN1BQKBR w HAha - 0 9
+epd rnnbqkbr/p2ppp2/7p/1pp3p1/2P2N2/8/PP1PPPPP/RN1BQKBR w HAha -
 perft 1 25
 perft 2 528
 perft 3 13896
@@ -4007,7 +4007,7 @@ perft 5 9079829
 perft 6 232750602
 
 id 445
-epd rnn1kbbr/ppppqp2/6p1/2N1p2p/P7/2P5/1P1PPPPP/RN1QKBBR w HAha - 2 9
+epd rnn1kbbr/ppppqp2/6p1/2N1p2p/P7/2P5/1P1PPPPP/RN1QKBBR w HAha -
 perft 1 27
 perft 2 801
 perft 3 22088
@@ -4016,7 +4016,7 @@ perft 5 20334071
 perft 6 682580976
 
 id 446
-epd rnnqkrbb/p1p1p1pp/1p3p2/8/3p2Q1/P1P1P3/1P1P1PPP/RNN1KRBB w FAfa - 0 9
+epd rnnqkrbb/p1p1p1pp/1p3p2/8/3p2Q1/P1P1P3/1P1P1PPP/RNN1KRBB w FAfa -
 perft 1 37
 perft 2 1014
 perft 3 34735
@@ -4025,7 +4025,7 @@ perft 5 32921537
 perft 6 988770109
 
 id 447
-epd bbrnk1qr/1pppppp1/p4n1p/8/P2P2N1/8/1PP1PPPP/BBR1NKQR w HC - 1 9
+epd bbrnk1qr/1pppppp1/p4n1p/8/P2P2N1/8/1PP1PPPP/BBR1NKQR w HC -
 perft 1 21
 perft 2 481
 perft 3 11213
@@ -4034,7 +4034,7 @@ perft 5 7015419
 perft 6 187564853
 
 id 448
-epd brnbnkqr/1pp1p1p1/p2p1p2/7p/1P4PP/8/PBPPPP2/1RNBNKQR w HBhb - 0 9
+epd brnbnkqr/1pp1p1p1/p2p1p2/7p/1P4PP/8/PBPPPP2/1RNBNKQR w HBhb -
 perft 1 31
 perft 2 743
 perft 3 24260
@@ -4043,7 +4043,7 @@ perft 5 22391185
 perft 6 653721389
 
 id 449
-epd br2kbqr/ppppp1pp/3n1p2/3P4/3n3P/3N4/PPP1PPP1/BR1NKBQR w HBhb - 3 9
+epd br2kbqr/ppppp1pp/3n1p2/3P4/3n3P/3N4/PPP1PPP1/BR1NKBQR w HBhb -
 perft 1 25
 perft 2 872
 perft 3 22039
@@ -4052,7 +4052,7 @@ perft 5 20281962
 perft 6 685749952
 
 id 450
-epd br1nkqrb/ppppppp1/8/7p/4P3/n1P2PP1/PP1P3P/BRNNKQRB w GBgb - 0 9
+epd br1nkqrb/ppppppp1/8/7p/4P3/n1P2PP1/PP1P3P/BRNNKQRB w GBgb -
 perft 1 28
 perft 2 607
 perft 3 16934
@@ -4061,7 +4061,7 @@ perft 5 11607818
 perft 6 294181806
 
 id 451
-epd rbbn1kqr/pp1pp1p1/2pn3p/5p2/5P2/1P1N4/PNPPP1PP/RBB2KQR w HAha - 1 9
+epd rbbn1kqr/pp1pp1p1/2pn3p/5p2/5P2/1P1N4/PNPPP1PP/RBB2KQR w HAha -
 perft 1 27
 perft 2 725
 perft 3 21543
@@ -4070,7 +4070,7 @@ perft 5 19239812
 perft 6 581716972
 
 id 452
-epd rnbbnk1r/pp1ppp1p/6q1/2p5/PP4p1/4P3/2PP1PPP/RNBBNKQR w HAha - 1 9
+epd rnbbnk1r/pp1ppp1p/6q1/2p5/PP4p1/4P3/2PP1PPP/RNBBNKQR w HAha -
 perft 1 25
 perft 2 1072
 perft 3 26898
@@ -4079,7 +4079,7 @@ perft 5 28469879
 perft 6 1122703887
 
 id 453
-epd rnbnkbqr/1pp3pp/3p4/p3pp2/3P2P1/2N1N3/PPP1PP1P/R1B1KBQR w HAha - 0 9
+epd rnbnkbqr/1pp3pp/3p4/p3pp2/3P2P1/2N1N3/PPP1PP1P/R1B1KBQR w HAha -
 perft 1 31
 perft 2 1028
 perft 3 32907
@@ -4088,7 +4088,7 @@ perft 5 36025223
 perft 6 1211187800
 
 id 454
-epd r1bnkqrb/1ppppppp/p3n3/8/6P1/4N3/PPPPPPRP/RNB1KQ1B w Aga - 1 9
+epd r1bnkqrb/1ppppppp/p3n3/8/6P1/4N3/PPPPPPRP/RNB1KQ1B w Aga -
 perft 1 23
 perft 2 457
 perft 3 11416
@@ -4097,7 +4097,7 @@ perft 5 6666787
 perft 6 159759052
 
 id 455
-epd rbn1bkqr/p1pp1pp1/1pn5/4p2p/7P/1PBP4/P1P1PPP1/RBNN1KQR w HAha - 0 9
+epd rbn1bkqr/p1pp1pp1/1pn5/4p2p/7P/1PBP4/P1P1PPP1/RBNN1KQR w HAha -
 perft 1 23
 perft 2 470
 perft 3 11649
@@ -4106,7 +4106,7 @@ perft 5 6963287
 perft 6 172833738
 
 id 456
-epd rnnbbkqr/3ppppp/p7/1pp5/P6P/6P1/1PPPPP2/RNNBBKQR w HAha - 0 9
+epd rnnbbkqr/3ppppp/p7/1pp5/P6P/6P1/1PPPPP2/RNNBBKQR w HAha -
 perft 1 26
 perft 2 569
 perft 3 15733
@@ -4115,7 +4115,7 @@ perft 5 11008114
 perft 6 284485303
 
 id 457
-epd r1nk1bqr/1pppp1pp/2n5/p4p1b/5P2/1N4B1/PPPPP1PP/RN1K1BQR w HAha - 2 9
+epd r1nk1bqr/1pppp1pp/2n5/p4p1b/5P2/1N4B1/PPPPP1PP/RN1K1BQR w HAha -
 perft 1 25
 perft 2 824
 perft 3 21983
@@ -4124,7 +4124,7 @@ perft 5 20904119
 perft 6 716170771
 
 id 458
-epd r1nkbqrb/p2pppp1/npp4p/8/4PP2/2N4P/PPPP2P1/R1NKBQRB w GAga - 0 9
+epd r1nkbqrb/p2pppp1/npp4p/8/4PP2/2N4P/PPPP2P1/R1NKBQRB w GAga -
 perft 1 31
 perft 2 548
 perft 3 17480
@@ -4133,7 +4133,7 @@ perft 5 11469548
 perft 6 255067638
 
 id 459
-epd rbnnkqbr/ppppp2p/5p2/6p1/2P1B3/P6P/1P1PPPP1/R1NNKQBR w HAha - 1 9
+epd rbnnkqbr/ppppp2p/5p2/6p1/2P1B3/P6P/1P1PPPP1/R1NNKQBR w HAha -
 perft 1 31
 perft 2 809
 perft 3 24956
@@ -4142,7 +4142,7 @@ perft 5 21247414
 perft 6 606221516
 
 id 460
-epd 1r1bkqbr/pppp1ppp/2nnp3/8/2P5/N4P2/PP1PP1PP/1RNBKQBR w Hh - 0 9
+epd 1r1bkqbr/pppp1ppp/2nnp3/8/2P5/N4P2/PP1PP1PP/1RNBKQBR w Hh -
 perft 1 28
 perft 2 810
 perft 3 22844
@@ -4151,7 +4151,7 @@ perft 5 20188622
 perft 6 636748147
 
 id 461
-epd rn1kqbbr/p1pppp1p/1p4p1/1n6/1P2P3/4Q2P/P1PP1PP1/RNNK1BBR w HAha - 1 9
+epd rn1kqbbr/p1pppp1p/1p4p1/1n6/1P2P3/4Q2P/P1PP1PP1/RNNK1BBR w HAha -
 perft 1 39
 perft 2 848
 perft 3 30100
@@ -4160,7 +4160,7 @@ perft 5 25594662
 perft 6 659615710
 
 id 462
-epd rn1kqrbb/pppppppp/8/8/2nP2P1/1P2P3/P1P2P1P/RNNKQRBB w FAfa - 1 9
+epd rn1kqrbb/pppppppp/8/8/2nP2P1/1P2P3/P1P2P1P/RNNKQRBB w FAfa -
 perft 1 29
 perft 2 766
 perft 3 21701
@@ -4169,7 +4169,7 @@ perft 5 16944425
 perft 6 456898648
 
 id 463
-epd b1rnnkrq/bpppppp1/7p/8/1p6/2B5/PNPPPPPP/1BR1NKRQ w GCgc - 2 9
+epd b1rnnkrq/bpppppp1/7p/8/1p6/2B5/PNPPPPPP/1BR1NKRQ w GCgc -
 perft 1 25
 perft 2 667
 perft 3 17253
@@ -4178,7 +4178,7 @@ perft 5 12865247
 perft 6 365621294
 
 id 464
-epd brnb1krq/pppppppp/8/5P2/2P1n2P/8/PP1PP1P1/BRNBNKRQ w GBgb - 1 9
+epd brnb1krq/pppppppp/8/5P2/2P1n2P/8/PP1PP1P1/BRNBNKRQ w GBgb -
 perft 1 23
 perft 2 620
 perft 3 14882
@@ -4187,7 +4187,7 @@ perft 5 10776855
 perft 6 300125003
 
 id 465
-epd b1nnkbrq/pr1pppp1/1p5p/2p5/P2N1P2/8/1PPPP1PP/BR1NKBRQ w GBg - 0 9
+epd b1nnkbrq/pr1pppp1/1p5p/2p5/P2N1P2/8/1PPPP1PP/BR1NKBRQ w GBg -
 perft 1 24
 perft 2 472
 perft 3 12181
@@ -4196,7 +4196,7 @@ perft 5 7370758
 perft 6 178605165
 
 id 466
-epd br1nkrqb/p1p1p1pp/3n4/1p1p1p2/5N1P/4P3/PPPP1PP1/BR1NKRQB w FBfb - 0 9
+epd br1nkrqb/p1p1p1pp/3n4/1p1p1p2/5N1P/4P3/PPPP1PP1/BR1NKRQB w FBfb -
 perft 1 24
 perft 2 775
 perft 3 19398
@@ -4205,7 +4205,7 @@ perft 5 16429837
 perft 6 539767605
 
 id 467
-epd rbbnnkrq/p2pp1pp/2p5/5p2/1pPP1B2/P7/1P2PPPP/RB1NNKRQ w GAga - 0 9
+epd rbbnnkrq/p2pp1pp/2p5/5p2/1pPP1B2/P7/1P2PPPP/RB1NNKRQ w GAga -
 perft 1 34
 perft 2 921
 perft 3 30474
@@ -4214,7 +4214,7 @@ perft 5 28095833
 perft 6 806446436
 
 id 468
-epd rnbbnkr1/1p1ppp1p/2p3p1/p7/2Pq4/1P1P4/P2BPPPP/RN1BNKRQ w GAga - 2 9
+epd rnbbnkr1/1p1ppp1p/2p3p1/p7/2Pq4/1P1P4/P2BPPPP/RN1BNKRQ w GAga -
 perft 1 26
 perft 2 1139
 perft 3 29847
@@ -4223,7 +4223,7 @@ perft 5 32825932
 perft 6 1281760240
 
 id 469
-epd 1rbnkbrq/pppppp2/n5pp/2P5/P7/4N3/1P1PPPPP/RNB1KBRQ w GAg - 2 9
+epd 1rbnkbrq/pppppp2/n5pp/2P5/P7/4N3/1P1PPPPP/RNB1KBRQ w GAg -
 perft 1 23
 perft 2 574
 perft 3 14146
@@ -4232,7 +4232,7 @@ perft 5 10203438
 perft 6 301874034
 
 id 470
-epd 1nbnkr1b/rppppppq/p7/7p/1P5P/3P2P1/P1P1PP2/RNBNKRQB w FAf - 1 9
+epd 1nbnkr1b/rppppppq/p7/7p/1P5P/3P2P1/P1P1PP2/RNBNKRQB w FAf -
 perft 1 33
 perft 2 823
 perft 3 26696
@@ -4241,7 +4241,7 @@ perft 5 23266182
 perft 6 672294132
 
 id 471
-epd rbn1bkrq/ppppp3/4n2p/5pp1/1PN5/2P5/P2PPPPP/RBN1BKRQ w GAga - 0 9
+epd rbn1bkrq/ppppp3/4n2p/5pp1/1PN5/2P5/P2PPPPP/RBN1BKRQ w GAga -
 perft 1 27
 perft 2 859
 perft 3 24090
@@ -4250,7 +4250,7 @@ perft 5 23075785
 perft 6 789152120
 
 id 472
-epd r1nbbkrq/1ppp2pp/2n2p2/p3p3/5P2/1N4BP/PPPPP1P1/RN1B1KRQ w GAga - 0 9
+epd r1nbbkrq/1ppp2pp/2n2p2/p3p3/5P2/1N4BP/PPPPP1P1/RN1B1KRQ w GAga -
 perft 1 25
 perft 2 774
 perft 3 20141
@@ -4259,7 +4259,7 @@ perft 5 16718577
 perft 6 515864053
 
 id 473
-epd rnnkbbrq/1pppp1p1/5p2/7p/p6P/3N1P2/PPPPP1PQ/RN1KBBR1 w GAga - 0 9
+epd rnnkbbrq/1pppp1p1/5p2/7p/p6P/3N1P2/PPPPP1PQ/RN1KBBR1 w GAga -
 perft 1 29
 perft 2 673
 perft 3 20098
@@ -4268,7 +4268,7 @@ perft 5 15545590
 perft 6 416359581
 
 id 474
-epd r1nkbrqb/pppp1p2/n3p1p1/7p/2P2P2/1P6/P2PPQPP/RNNKBR1B w FAfa - 0 9
+epd r1nkbrqb/pppp1p2/n3p1p1/7p/2P2P2/1P6/P2PPQPP/RNNKBR1B w FAfa -
 perft 1 27
 perft 2 722
 perft 3 21397
@@ -4277,7 +4277,7 @@ perft 5 18742426
 perft 6 537750982
 
 id 475
-epd rbnnkr1q/1ppp2pp/p4p2/P2bp3/4P2P/8/1PPP1PP1/RBNNKRBQ w FAfa - 1 9
+epd rbnnkr1q/1ppp2pp/p4p2/P2bp3/4P2P/8/1PPP1PP1/RBNNKRBQ w FAfa -
 perft 1 26
 perft 2 848
 perft 3 23387
@@ -4286,7 +4286,7 @@ perft 5 21591790
 perft 6 675163653
 
 id 476
-epd rn1bkrb1/1ppppp1p/pn4p1/8/P2q3P/3P4/NPP1PPP1/RN1BKRBQ w FAfa - 1 9
+epd rn1bkrb1/1ppppp1p/pn4p1/8/P2q3P/3P4/NPP1PPP1/RN1BKRBQ w FAfa -
 perft 1 22
 perft 2 803
 perft 3 18322
@@ -4295,7 +4295,7 @@ perft 5 15847763
 perft 6 536419559
 
 id 477
-epd rn1krbbq/pppp1npp/4pp2/8/4P2P/3P2P1/PPP2P2/RNNKRBBQ w EAea - 1 9
+epd rn1krbbq/pppp1npp/4pp2/8/4P2P/3P2P1/PPP2P2/RNNKRBBQ w EAea -
 perft 1 29
 perft 2 810
 perft 3 23968
@@ -4304,7 +4304,7 @@ perft 5 20361517
 perft 6 575069358
 
 id 478
-epd rnn1rqbb/ppkp1pp1/2p1p2p/2P5/8/3P1P2/PP2P1PP/RNNKRQBB w EA - 0 9
+epd rnn1rqbb/ppkp1pp1/2p1p2p/2P5/8/3P1P2/PP2P1PP/RNNKRQBB w EA -
 perft 1 22
 perft 2 506
 perft 3 11973
@@ -4313,7 +4313,7 @@ perft 5 7287368
 perft 6 189865944
 
 id 479
-epd bbqr1knr/pppppp1p/8/4n1p1/2P1P3/6P1/PPQP1P1P/BB1RNKNR w HDhd - 0 9
+epd bbqr1knr/pppppp1p/8/4n1p1/2P1P3/6P1/PPQP1P1P/BB1RNKNR w HDhd -
 perft 1 26
 perft 2 650
 perft 3 18253
@@ -4322,7 +4322,7 @@ perft 5 14301029
 perft 6 394943978
 
 id 480
-epd bq1bnknr/pprppp1p/8/2p3p1/4PPP1/8/PPPP3P/BQRBNKNR w HCh - 0 9
+epd bq1bnknr/pprppp1p/8/2p3p1/4PPP1/8/PPPP3P/BQRBNKNR w HCh -
 perft 1 24
 perft 2 548
 perft 3 14021
@@ -4331,7 +4331,7 @@ perft 5 9374021
 perft 6 250988458
 
 id 481
-epd bqrnkb1r/1p2pppp/p1pp3n/5Q2/2P4P/5N2/PP1PPPP1/B1RNKB1R w HChc - 0 9
+epd bqrnkb1r/1p2pppp/p1pp3n/5Q2/2P4P/5N2/PP1PPPP1/B1RNKB1R w HChc -
 perft 1 46
 perft 2 823
 perft 3 33347
@@ -4340,7 +4340,7 @@ perft 5 26130444
 perft 6 582880996
 
 id 482
-epd bq1rknrb/pppppp1p/4n3/6p1/4P1P1/3P1P2/PPP4P/BQRNKNRB w GCg - 0 9
+epd bq1rknrb/pppppp1p/4n3/6p1/4P1P1/3P1P2/PPP4P/BQRNKNRB w GCg -
 perft 1 23
 perft 2 618
 perft 3 14815
@@ -4349,7 +4349,7 @@ perft 5 10606831
 perft 6 315124518
 
 id 483
-epd q1brnknr/pp1pp1p1/8/2p2p1p/5b2/P4N2/1PPPP1PP/QBBRK1NR w hd - 0 9
+epd q1brnknr/pp1pp1p1/8/2p2p1p/5b2/P4N2/1PPPP1PP/QBBRK1NR w hd -
 perft 1 22
 perft 2 675
 perft 3 15778
@@ -4358,7 +4358,7 @@ perft 5 12077228
 perft 6 368479752
 
 id 484
-epd qrbbnknr/1p1ppp1p/p1p5/8/1P2P1p1/3P1B2/P1P2PPP/QRB1NKNR w HBhb - 0 9
+epd qrbbnknr/1p1ppp1p/p1p5/8/1P2P1p1/3P1B2/P1P2PPP/QRB1NKNR w HBhb -
 perft 1 32
 perft 2 722
 perft 3 24049
@@ -4367,7 +4367,7 @@ perft 5 19584539
 perft 6 484814878
 
 id 485
-epd qrb1kbnr/p3pppp/2n5/1ppp4/7P/3P1P2/PPP1P1PR/QRBNKBN1 w Bhb - 0 9
+epd qrb1kbnr/p3pppp/2n5/1ppp4/7P/3P1P2/PPP1P1PR/QRBNKBN1 w Bhb -
 perft 1 26
 perft 2 831
 perft 3 22606
@@ -4376,7 +4376,7 @@ perft 5 20500804
 perft 6 662608969
 
 id 486
-epd qrbnknrb/ppp1pp2/6p1/7p/PPNp4/8/2PPPPPP/QRB1KNRB w GBgb - 0 9
+epd qrbnknrb/ppp1pp2/6p1/7p/PPNp4/8/2PPPPPP/QRB1KNRB w GBgb -
 perft 1 31
 perft 2 840
 perft 3 26762
@@ -4385,7 +4385,7 @@ perft 5 24422614
 perft 6 701363800
 
 id 487
-epd qbrnbknr/pp1pp1pp/8/2p2p2/3Q4/PP6/2PPPPPP/1BRNBKNR w HChc - 0 9
+epd qbrnbknr/pp1pp1pp/8/2p2p2/3Q4/PP6/2PPPPPP/1BRNBKNR w HChc -
 perft 1 38
 perft 2 1121
 perft 3 39472
@@ -4394,7 +4394,7 @@ perft 5 41108769
 perft 6 1285503872
 
 id 488
-epd qr1bbk1r/pppppp1p/1n6/5np1/4B3/1PP5/P2PPPPP/QRN1BKNR w HBhb - 0 9
+epd qr1bbk1r/pppppp1p/1n6/5np1/4B3/1PP5/P2PPPPP/QRN1BKNR w HBhb -
 perft 1 25
 perft 2 694
 perft 3 16938
@@ -4403,7 +4403,7 @@ perft 5 12164609
 perft 6 345122090
 
 id 489
-epd qrnkbbnr/1p1pp2p/p7/2p1Npp1/6P1/7P/PPPPPP2/QR1KBBNR w HBhb - 0 9
+epd qrnkbbnr/1p1pp2p/p7/2p1Npp1/6P1/7P/PPPPPP2/QR1KBBNR w HBhb -
 perft 1 27
 perft 2 586
 perft 3 16348
@@ -4412,7 +4412,7 @@ perft 5 11409633
 perft 6 298054792
 
 id 490
-epd qrnkbnrb/pp1p1p2/2p1p1pp/4N3/P4P2/8/1PPPP1PP/QR1KBNRB w GBgb - 0 9
+epd qrnkbnrb/pp1p1p2/2p1p1pp/4N3/P4P2/8/1PPPP1PP/QR1KBNRB w GBgb -
 perft 1 32
 perft 2 645
 perft 3 20737
@@ -4421,7 +4421,7 @@ perft 5 15037464
 perft 6 358531599
 
 id 491
-epd qbrnknbr/1pppppp1/p6p/8/1P6/3PP3/PQP2PPP/1BRNKNBR w HChc - 3 9
+epd qbrnknbr/1pppppp1/p6p/8/1P6/3PP3/PQP2PPP/1BRNKNBR w HChc -
 perft 1 26
 perft 2 595
 perft 3 16755
@@ -4430,7 +4430,7 @@ perft 5 12214768
 perft 6 323518628
 
 id 492
-epd qrnbk1br/1ppppp1p/p5p1/8/4Pn2/4K1P1/PPPP1P1P/QRNB1NBR w hb - 0 9
+epd qrnbk1br/1ppppp1p/p5p1/8/4Pn2/4K1P1/PPPP1P1P/QRNB1NBR w hb -
 perft 1 24
 perft 2 609
 perft 3 13776
@@ -4439,7 +4439,7 @@ perft 5 8538539
 perft 6 230364479
 
 id 493
-epd qrnk1bbr/1pnp1ppp/p1p1p3/8/3Q4/1P1N3P/P1PPPPP1/1RNK1BBR w HBhb - 0 9
+epd qrnk1bbr/1pnp1ppp/p1p1p3/8/3Q4/1P1N3P/P1PPPPP1/1RNK1BBR w HBhb -
 perft 1 43
 perft 2 1106
 perft 3 42898
@@ -4448,7 +4448,7 @@ perft 5 41695761
 perft 6 1113836402
 
 id 494
-epd qrnknrb1/pppppp2/8/6pp/4P2P/3P1P2/PbP3P1/QRNKNRBB w FBfb - 0 9
+epd qrnknrb1/pppppp2/8/6pp/4P2P/3P1P2/PbP3P1/QRNKNRBB w FBfb -
 perft 1 24
 perft 2 658
 perft 3 17965
@@ -4457,7 +4457,7 @@ perft 5 14457245
 perft 6 400971226
 
 id 495
-epd bbrqnrk1/ppp2ppp/7n/3pp3/8/P4N1N/1PPPPPPP/BBRQ1RK1 w - - 1 9
+epd bbrqnrk1/ppp2ppp/7n/3pp3/8/P4N1N/1PPPPPPP/BBRQ1RK1 w - -
 perft 1 22
 perft 2 503
 perft 3 12078
@@ -4466,7 +4466,7 @@ perft 5 8080951
 perft 6 224960353
 
 id 496
-epd brqbnk1r/1ppp1ppp/8/p3pn2/8/2PP1P2/PP2PKPP/BRQBN1NR w hb - 1 9
+epd brqbnk1r/1ppp1ppp/8/p3pn2/8/2PP1P2/PP2PKPP/BRQBN1NR w hb -
 perft 1 25
 perft 2 745
 perft 3 19387
@@ -4475,7 +4475,7 @@ perft 5 15520298
 perft 6 460840861
 
 id 497
-epd brqnkbnr/pp2pp1p/3p4/2p5/5p2/3P3P/PPP1PPP1/B1RNKBNR w Hhb - 0 9
+epd brqnkbnr/pp2pp1p/3p4/2p5/5p2/3P3P/PPP1PPP1/B1RNKBNR w Hhb -
 perft 1 19
 perft 2 516
 perft 3 10755
@@ -4484,7 +4484,7 @@ perft 5 6995034
 perft 6 214340699
 
 id 498
-epd brq1kn1b/1ppppprp/2n3p1/p7/P1N5/6P1/1PPPPP1P/BRQNK1RB w GBb - 2 9
+epd brq1kn1b/1ppppprp/2n3p1/p7/P1N5/6P1/1PPPPP1P/BRQNK1RB w GBb -
 perft 1 29
 perft 2 557
 perft 3 16739
@@ -4493,7 +4493,7 @@ perft 5 10840256
 perft 6 249999654
 
 id 499
-epd rbbq1k1r/ppp1pppp/7n/1n1p4/5P2/P2P4/1PPBP1PP/RB1QNKNR w HAha - 1 9
+epd rbbq1k1r/ppp1pppp/7n/1n1p4/5P2/P2P4/1PPBP1PP/RB1QNKNR w HAha -
 perft 1 25
 perft 2 769
 perft 3 20110
@@ -4502,7 +4502,7 @@ perft 5 17438715
 perft 6 570893953
 
 id 500
-epd r1bbnk1r/qpp1pppp/p6n/3p4/1P6/5N1P/P1PPPPP1/RQBBK1NR w ha - 0 9
+epd r1bbnk1r/qpp1pppp/p6n/3p4/1P6/5N1P/P1PPPPP1/RQBBK1NR w ha -
 perft 1 23
 perft 2 728
 perft 3 18209
@@ -4511,7 +4511,7 @@ perft 5 16053564
 perft 6 529082811
 
 id 501
-epd rqbnkbnr/1pp2p1p/3p4/p3p1p1/8/2P2P2/PP1PPNPP/RQBNKB1R w HAha - 0 9
+epd rqbnkbnr/1pp2p1p/3p4/p3p1p1/8/2P2P2/PP1PPNPP/RQBNKB1R w HAha -
 perft 1 26
 perft 2 772
 perft 3 21903
@@ -4520,7 +4520,7 @@ perft 5 19571559
 perft 6 593915677
 
 id 502
-epd r1bnknrb/pqppp1p1/1p5p/5p2/7P/3P2N1/PPP1PPP1/RQBNK1RB w GAga - 2 9
+epd r1bnknrb/pqppp1p1/1p5p/5p2/7P/3P2N1/PPP1PPP1/RQBNK1RB w GAga -
 perft 1 27
 perft 2 748
 perft 3 20291
@@ -4529,7 +4529,7 @@ perft 5 16324542
 perft 6 506453626
 
 id 503
-epd rbqnbknr/pp1pppp1/8/2p5/3P3p/5N1P/PPP1PPPR/RBQNBK2 w Aha - 0 9
+epd rbqnbknr/pp1pppp1/8/2p5/3P3p/5N1P/PPP1PPPR/RBQNBK2 w Aha -
 perft 1 30
 perft 2 859
 perft 3 26785
@@ -4538,7 +4538,7 @@ perft 5 26363334
 perft 6 842796987
 
 id 504
-epd rqnbbrk1/ppppppp1/8/5n1p/3P3P/2B3P1/PPP1PP2/RQNB1KNR w HA - 0 9
+epd rqnbbrk1/ppppppp1/8/5n1p/3P3P/2B3P1/PPP1PP2/RQNB1KNR w HA -
 perft 1 22
 perft 2 505
 perft 3 11452
@@ -4547,7 +4547,7 @@ perft 5 7055215
 perft 6 186760784
 
 id 505
-epd rqnkbbnr/pp2p1p1/8/2pp1p1p/3PPP2/8/PPP1N1PP/RQNKBB1R w HAha - 0 9
+epd rqnkbbnr/pp2p1p1/8/2pp1p1p/3PPP2/8/PPP1N1PP/RQNKBB1R w HAha -
 perft 1 28
 perft 2 832
 perft 3 23142
@@ -4556,7 +4556,7 @@ perft 5 20429246
 perft 6 663183060
 
 id 506
-epd rqnkbnr1/pppp2bp/6p1/4pp2/1P2P3/3NN3/P1PP1PPP/RQ1KB1RB w GAga - 0 9
+epd rqnkbnr1/pppp2bp/6p1/4pp2/1P2P3/3NN3/P1PP1PPP/RQ1KB1RB w GAga -
 perft 1 28
 perft 2 641
 perft 3 18835
@@ -4565,7 +4565,7 @@ perft 5 14038570
 perft 6 364210162
 
 id 507
-epd rbq2kbr/pppppppp/2n5/P7/3P1n2/2P5/1P2PPPP/RBQNKNBR w HA - 1 9
+epd rbq2kbr/pppppppp/2n5/P7/3P1n2/2P5/1P2PPPP/RBQNKNBR w HA -
 perft 1 31
 perft 2 889
 perft 3 27028
@@ -4574,7 +4574,7 @@ perft 5 24299415
 perft 6 692180754
 
 id 508
-epd rq1bkn1r/ppppp2p/3n4/5pp1/2b3P1/1N1P1P2/PPP1P2P/RQ1BKNBR w HAha - 1 9
+epd rq1bkn1r/ppppp2p/3n4/5pp1/2b3P1/1N1P1P2/PPP1P2P/RQ1BKNBR w HAha -
 perft 1 28
 perft 2 810
 perft 3 22667
@@ -4583,7 +4583,7 @@ perft 5 18719949
 perft 6 556282676
 
 id 509
-epd r1nknbbr/p2ppp1p/1pp3p1/8/1P6/4P3/P1PPNPPq/R1QKNBBR w HAha - 0 9
+epd r1nknbbr/p2ppp1p/1pp3p1/8/1P6/4P3/P1PPNPPq/R1QKNBBR w HAha -
 perft 1 24
 perft 2 797
 perft 3 22144
@@ -4592,7 +4592,7 @@ perft 5 21862776
 perft 6 716521139
 
 id 510
-epd rqnknrbb/ppp1p3/5ppp/2Np4/2P5/4P3/PP1P1PPP/RQNK1RBB w FAfa - 0 9
+epd rqnknrbb/ppp1p3/5ppp/2Np4/2P5/4P3/PP1P1PPP/RQNK1RBB w FAfa -
 perft 1 34
 perft 2 686
 perft 3 23277
@@ -4601,7 +4601,7 @@ perft 5 17664543
 perft 6 423574794
 
 id 511
-epd 1brnqknr/2p1pppp/p2p4/1P6/6P1/4Nb2/PP1PPP1P/BBR1QKNR w HChc - 1 9
+epd 1brnqknr/2p1pppp/p2p4/1P6/6P1/4Nb2/PP1PPP1P/BBR1QKNR w HChc -
 perft 1 34
 perft 2 1019
 perft 3 32982
@@ -4610,7 +4610,7 @@ perft 5 33322477
 perft 6 1043293394
 
 id 512
-epd brn1qknr/1p1pppp1/pb5p/Q1p5/3P3P/8/PPP1PPPR/BRNB1KN1 w Bhb - 2 9
+epd brn1qknr/1p1pppp1/pb5p/Q1p5/3P3P/8/PPP1PPPR/BRNB1KN1 w Bhb -
 perft 1 32
 perft 2 642
 perft 3 20952
@@ -4619,7 +4619,7 @@ perft 5 15454749
 perft 6 371861782
 
 id 513
-epd brnqkbnr/pppppp2/8/6pp/6P1/P2P1P2/1PP1P2P/BRNQKBNR w HBhb - 0 9
+epd brnqkbnr/pppppp2/8/6pp/6P1/P2P1P2/1PP1P2P/BRNQKBNR w HBhb -
 perft 1 20
 perft 2 441
 perft 3 9782
@@ -4628,7 +4628,7 @@ perft 5 5770284
 perft 6 153051835
 
 id 514
-epd 2nqknrb/1rpppppp/5B2/pp6/1PP1b3/3P4/P3PPPP/1RNQKNRB w GBg - 1 9
+epd 2nqknrb/1rpppppp/5B2/pp6/1PP1b3/3P4/P3PPPP/1RNQKNRB w GBg -
 perft 1 35
 perft 2 1042
 perft 3 36238
@@ -4637,7 +4637,7 @@ perft 5 38505058
 perft 6 1202668717
 
 id 515
-epd rb1nqknr/1pp1pppp/8/3p4/p2P4/6PN/PPPQPP1P/RBBN1K1R w HAha - 0 9
+epd rb1nqknr/1pp1pppp/8/3p4/p2P4/6PN/PPPQPP1P/RBBN1K1R w HAha -
 perft 1 29
 perft 2 692
 perft 3 21237
@@ -4646,7 +4646,7 @@ perft 5 17820605
 perft 6 497251206
 
 id 516
-epd rnbbqknr/pppp4/5p2/4p1pp/P7/2N2PP1/1PPPP2P/R1BBQKNR w HAha - 0 9
+epd rnbbqknr/pppp4/5p2/4p1pp/P7/2N2PP1/1PPPP2P/R1BBQKNR w HAha -
 perft 1 23
 perft 2 595
 perft 3 14651
@@ -4655,7 +4655,7 @@ perft 5 10881112
 perft 6 329010121
 
 id 517
-epd rn1qkbnr/p1p1pp1p/bp4p1/3p4/1P6/4P3/P1PP1PPP/RNBQKBNR w HAha - 0 9
+epd rn1qkbnr/p1p1pp1p/bp4p1/3p4/1P6/4P3/P1PP1PPP/RNBQKBNR w HAha -
 perft 1 30
 perft 2 794
 perft 3 24319
@@ -4664,7 +4664,7 @@ perft 5 21657601
 perft 6 647745807
 
 id 518
-epd r1bqk1rb/pppnpppp/5n2/3p4/2P3PP/2N5/PP1PPP2/R1BQKNRB w GAga - 1 9
+epd r1bqk1rb/pppnpppp/5n2/3p4/2P3PP/2N5/PP1PPP2/R1BQKNRB w GAga -
 perft 1 32
 perft 2 821
 perft 3 27121
@@ -4673,7 +4673,7 @@ perft 5 24923473
 perft 6 710765657
 
 id 519
-epd rbnqbknr/1p1ppp1p/6p1/p1p5/7P/3P4/PPP1PPP1/RBNQBKNR w HAha - 0 9
+epd rbnqbknr/1p1ppp1p/6p1/p1p5/7P/3P4/PPP1PPP1/RBNQBKNR w HAha -
 perft 1 24
 perft 2 720
 perft 3 18842
@@ -4682,7 +4682,7 @@ perft 5 15992882
 perft 6 501093456
 
 id 520
-epd r1qbbk1r/pp1ppppp/n1p5/5n2/B1P3P1/8/PP1PPP1P/RNQ1BKNR w HAha - 0 9
+epd r1qbbk1r/pp1ppppp/n1p5/5n2/B1P3P1/8/PP1PPP1P/RNQ1BKNR w HAha -
 perft 1 27
 perft 2 831
 perft 3 22293
@@ -4691,7 +4691,7 @@ perft 5 19948650
 perft 6 637973209
 
 id 521
-epd rnqkbb1r/p1pppppp/8/8/1p4n1/PP4PP/2PPPP2/RNQKBBNR w HAha - 0 9
+epd rnqkbb1r/p1pppppp/8/8/1p4n1/PP4PP/2PPPP2/RNQKBBNR w HAha -
 perft 1 18
 perft 2 463
 perft 3 9519
@@ -4700,7 +4700,7 @@ perft 5 6065231
 perft 6 172734380
 
 id 522
-epd rnqk1nrb/pppbpp2/7p/3p2p1/4B3/2N1N1P1/PPPPPP1P/R1QKB1R1 w GAga - 0 9
+epd rnqk1nrb/pppbpp2/7p/3p2p1/4B3/2N1N1P1/PPPPPP1P/R1QKB1R1 w GAga -
 perft 1 34
 perft 2 1171
 perft 3 38128
@@ -4709,7 +4709,7 @@ perft 5 42109356
 perft 6 1465473753
 
 id 523
-epd rbnqknbr/1pp1ppp1/3p4/7p/p2P2PP/2P5/PP2PP2/RBNQKNBR w HAha - 0 9
+epd rbnqknbr/1pp1ppp1/3p4/7p/p2P2PP/2P5/PP2PP2/RBNQKNBR w HAha -
 perft 1 32
 perft 2 867
 perft 3 28342
@@ -4718,7 +4718,7 @@ perft 5 26632459
 perft 6 781067145
 
 id 524
-epd rn1bknbr/pq2pppp/1p6/2pp4/P7/1P1P4/2PNPPPP/RNQBK1BR w HAha - 0 9
+epd rn1bknbr/pq2pppp/1p6/2pp4/P7/1P1P4/2PNPPPP/RNQBK1BR w HAha -
 perft 1 24
 perft 2 627
 perft 3 16652
@@ -4727,7 +4727,7 @@ perft 5 13200921
 perft 6 385193532
 
 id 525
-epd r1qk1bbr/ppp1pp1p/2np1n2/6p1/2PP4/3BP3/PP3PPP/RNQKN1BR w HAha - 2 9
+epd r1qk1bbr/ppp1pp1p/2np1n2/6p1/2PP4/3BP3/PP3PPP/RNQKN1BR w HAha -
 perft 1 31
 perft 2 992
 perft 3 30213
@@ -4736,7 +4736,7 @@ perft 5 30397368
 perft 6 1011631987
 
 id 526
-epd r1qknrbb/pppp1p2/2n3p1/4p2p/8/QPP5/P1NPPPPP/RN1K1RBB w FAfa - 2 9
+epd r1qknrbb/pppp1p2/2n3p1/4p2p/8/QPP5/P1NPPPPP/RN1K1RBB w FAfa -
 perft 1 30
 perft 2 702
 perft 3 21563
@@ -4745,7 +4745,7 @@ perft 5 16813114
 perft 6 438096194
 
 id 527
-epd bbkr1qnr/2pppppp/2n5/pp6/8/PPN5/1BPPPPPP/1BR1KQNR w HC - 2 9
+epd bbkr1qnr/2pppppp/2n5/pp6/8/PPN5/1BPPPPPP/1BR1KQNR w HC -
 perft 1 25
 perft 2 573
 perft 3 15183
@@ -4754,7 +4754,7 @@ perft 5 10554668
 perft 6 283975400
 
 id 528
-epd 1rnbkqnr/1bpppppp/1p6/7P/p2P4/5P2/PPP1P1P1/BRNBKQNR w HBhb - 0 9
+epd 1rnbkqnr/1bpppppp/1p6/7P/p2P4/5P2/PPP1P1P1/BRNBKQNR w HBhb -
 perft 1 21
 perft 2 503
 perft 3 11790
@@ -4763,7 +4763,7 @@ perft 5 7679979
 perft 6 207799378
 
 id 529
-epd brnkqbnr/2p1pppp/1p6/3p4/1pP5/P6P/3PPPP1/BRNKQBNR w HBhb - 0 9
+epd brnkqbnr/2p1pppp/1p6/3p4/1pP5/P6P/3PPPP1/BRNKQBNR w HBhb -
 perft 1 28
 perft 2 743
 perft 3 21054
@@ -4772,7 +4772,7 @@ perft 5 17354516
 perft 6 507176753
 
 id 530
-epd br1kqnrb/npp1pppp/8/3p4/p4N2/PP6/2PPPPPP/BR1KQNRB w GBgb - 0 9
+epd br1kqnrb/npp1pppp/8/3p4/p4N2/PP6/2PPPPPP/BR1KQNRB w GBgb -
 perft 1 31
 perft 2 808
 perft 3 25585
@@ -4781,7 +4781,7 @@ perft 5 22376575
 perft 6 640362920
 
 id 531
-epd rbbnkq1r/pppppp1p/7n/6p1/P5P1/2P2N2/1P1PPP1P/RBBNKQ1R w HAha - 1 9
+epd rbbnkq1r/pppppp1p/7n/6p1/P5P1/2P2N2/1P1PPP1P/RBBNKQ1R w HAha -
 perft 1 29
 perft 2 580
 perft 3 17585
@@ -4790,7 +4790,7 @@ perft 5 12730970
 perft 6 325226128
 
 id 532
-epd rnbbk1nr/pp2qppp/2ppp3/8/3P4/P1N4N/1PP1PPPP/R1BBKQ1R w HAha - 0 9
+epd rnbbk1nr/pp2qppp/2ppp3/8/3P4/P1N4N/1PP1PPPP/R1BBKQ1R w HAha -
 perft 1 29
 perft 2 838
 perft 3 24197
@@ -4799,7 +4799,7 @@ perft 5 21100580
 perft 6 646624429
 
 id 533
-epd rnbk1b1r/ppppn1pp/4pp2/7q/7P/P5PB/1PPPPP2/RNBKQ1NR w HAha - 3 9
+epd rnbk1b1r/ppppn1pp/4pp2/7q/7P/P5PB/1PPPPP2/RNBKQ1NR w HAha -
 perft 1 20
 perft 2 729
 perft 3 16633
@@ -4808,7 +4808,7 @@ perft 5 14507076
 perft 6 498621813
 
 id 534
-epd r2kqnrb/pbppppp1/np5p/8/4Q1P1/3P4/PPP1PP1P/RNBK1NRB w GAga - 2 9
+epd r2kqnrb/pbppppp1/np5p/8/4Q1P1/3P4/PPP1PP1P/RNBK1NRB w GAga -
 perft 1 47
 perft 2 1219
 perft 3 55009
@@ -4817,7 +4817,7 @@ perft 5 65239153
 perft 6 1834391369
 
 id 535
-epd rbnkbq1r/p1p2ppp/1p2pn2/3p4/P3P3/3P4/1PP1KPPP/RBN1BQNR w ha - 2 9
+epd rbnkbq1r/p1p2ppp/1p2pn2/3p4/P3P3/3P4/1PP1KPPP/RBN1BQNR w ha -
 perft 1 29
 perft 2 923
 perft 3 27179
@@ -4826,7 +4826,7 @@ perft 5 26202752
 perft 6 868565895
 
 id 536
-epd rk1bb1nr/ppppqppp/n7/1N2p3/6P1/7N/PPPPPP1P/R1KBBQ1R w HA - 6 9
+epd rk1bb1nr/ppppqppp/n7/1N2p3/6P1/7N/PPPPPP1P/R1KBBQ1R w HA -
 perft 1 27
 perft 2 703
 perft 3 19478
@@ -4835,7 +4835,7 @@ perft 5 16049807
 perft 6 492966455
 
 id 537
-epd rnkqbbnr/p1ppp2p/1p4p1/8/1B3p1P/2NP4/PPP1PPP1/R1KQ1BNR w HAha - 0 9
+epd rnkqbbnr/p1ppp2p/1p4p1/8/1B3p1P/2NP4/PPP1PPP1/R1KQ1BNR w HAha -
 perft 1 29
 perft 2 610
 perft 3 18855
@@ -4844,7 +4844,7 @@ perft 5 14020041
 perft 6 355083962
 
 id 538
-epd rnkqb1rb/pp1p1ppp/4p3/2P3n1/8/1PP5/P3PPPP/RNKQBNRB w GAga - 0 9
+epd rnkqb1rb/pp1p1ppp/4p3/2P3n1/8/1PP5/P3PPPP/RNKQBNRB w GAga -
 perft 1 29
 perft 2 675
 perft 3 20699
@@ -4853,7 +4853,7 @@ perft 5 17000613
 perft 6 476598337
 
 id 539
-epd rb1kqnbr/pp1pp1p1/1np2p2/7p/P1P3PP/8/1P1PPP2/RBNKQNBR w HAha - 0 9
+epd rb1kqnbr/pp1pp1p1/1np2p2/7p/P1P3PP/8/1P1PPP2/RBNKQNBR w HAha -
 perft 1 31
 perft 2 1077
 perft 3 33661
@@ -4862,7 +4862,7 @@ perft 5 37415304
 perft 6 1328374620
 
 id 540
-epd rnkbq1br/ppp2ppp/3p4/Q3p1n1/5P2/3P2P1/PPP1P2P/RNKB1NBR w HAha - 0 9
+epd rnkbq1br/ppp2ppp/3p4/Q3p1n1/5P2/3P2P1/PPP1P2P/RNKB1NBR w HAha -
 perft 1 41
 perft 2 1201
 perft 3 46472
@@ -4871,7 +4871,7 @@ perft 5 52991625
 perft 6 1675608008
 
 id 541
-epd rn1qnbbr/pp2pppp/2ppk3/8/2PP4/3Q1N2/PP2PPPP/RNK2BBR w HA - 1 9
+epd rn1qnbbr/pp2pppp/2ppk3/8/2PP4/3Q1N2/PP2PPPP/RNK2BBR w HA -
 perft 1 34
 perft 2 666
 perft 3 22474
@@ -4880,7 +4880,7 @@ perft 5 15860369
 perft 6 353831792
 
 id 542
-epd rnkqnr1b/ppppp1pp/5p2/8/Q1P2P2/8/PP1P2PP/RbK1NRBB w FAfa - 0 9
+epd rnkqnr1b/ppppp1pp/5p2/8/Q1P2P2/8/PP1P2PP/RbK1NRBB w FAfa -
 perft 1 36
 perft 2 876
 perft 3 31987
@@ -4889,7 +4889,7 @@ perft 5 29022529
 perft 6 736717252
 
 id 543
-epd bbrn1nqr/ppp1k1pp/5p2/3pp3/7P/3PN3/PPP1PPP1/BBRK1NQR w - - 1 9
+epd bbrn1nqr/ppp1k1pp/5p2/3pp3/7P/3PN3/PPP1PPP1/BBRK1NQR w - -
 perft 1 24
 perft 2 583
 perft 3 15063
@@ -4898,7 +4898,7 @@ perft 5 10522064
 perft 6 280707118
 
 id 544
-epd brnbkn1r/1pppp1p1/4q3/p4p1p/7P/1N3P2/PPPPP1PQ/BR1BKN1R w HBhb - 2 9
+epd brnbkn1r/1pppp1p1/4q3/p4p1p/7P/1N3P2/PPPPP1PQ/BR1BKN1R w HBhb -
 perft 1 27
 perft 2 935
 perft 3 26120
@@ -4907,7 +4907,7 @@ perft 5 26000648
 perft 6 873063158
 
 id 545
-epd br1knbqr/pp2p1pp/1n6/2pp1p2/6P1/2P4B/PP1PPPQP/BRNKN2R w HBhb - 0 9
+epd br1knbqr/pp2p1pp/1n6/2pp1p2/6P1/2P4B/PP1PPPQP/BRNKN2R w HBhb -
 perft 1 27
 perft 2 681
 perft 3 19202
@@ -4916,7 +4916,7 @@ perft 5 14954779
 perft 6 415624943
 
 id 546
-epd brnk1qrb/p1ppppp1/1p5p/8/P3n3/1N4P1/1PPPPPRP/BR1KNQ1B w Bgb - 0 9
+epd brnk1qrb/p1ppppp1/1p5p/8/P3n3/1N4P1/1PPPPPRP/BR1KNQ1B w Bgb -
 perft 1 22
 perft 2 638
 perft 3 13991
@@ -4925,7 +4925,7 @@ perft 5 9760752
 perft 6 293499724
 
 id 547
-epd rbbnknqr/pppp3p/5pp1/8/1P1pP3/7P/P1P2PP1/RBBNKNQR w HAha - 0 9
+epd rbbnknqr/pppp3p/5pp1/8/1P1pP3/7P/P1P2PP1/RBBNKNQR w HAha -
 perft 1 29
 perft 2 756
 perft 3 21616
@@ -4934,7 +4934,7 @@ perft 5 17602252
 perft 6 528140595
 
 id 548
-epd 1nbbknqr/rpp1ppp1/1Q1p3p/p7/2P2PP1/8/PP1PP2P/RNBBKN1R w HAh - 2 9
+epd 1nbbknqr/rpp1ppp1/1Q1p3p/p7/2P2PP1/8/PP1PP2P/RNBBKN1R w HAh -
 perft 1 37
 perft 2 977
 perft 3 34977
@@ -4943,7 +4943,7 @@ perft 5 33695089
 perft 6 940198007
 
 id 549
-epd rnb2bqr/ppkpppp1/3n3p/2p5/6PP/2N2P2/PPPPP3/R1BKNBQR w HA - 2 9
+epd rnb2bqr/ppkpppp1/3n3p/2p5/6PP/2N2P2/PPPPP3/R1BKNBQR w HA -
 perft 1 30
 perft 2 647
 perft 3 20365
@@ -4952,7 +4952,7 @@ perft 5 15115531
 perft 6 369257622
 
 id 550
-epd rn1k1qrb/p1pppppp/bp6/8/4n3/P4BPP/1PPPPP2/RNBKNQR1 w GAga - 2 9
+epd rn1k1qrb/p1pppppp/bp6/8/4n3/P4BPP/1PPPPP2/RNBKNQR1 w GAga -
 perft 1 22
 perft 2 670
 perft 3 14998
@@ -4961,7 +4961,7 @@ perft 5 11199653
 perft 6 339919682
 
 id 551
-epd rb2bnqr/nppkpppp/3p4/p7/1P6/P2N2P1/2PPPP1P/RB1KBNQR w HA - 3 9
+epd rb2bnqr/nppkpppp/3p4/p7/1P6/P2N2P1/2PPPP1P/RB1KBNQR w HA -
 perft 1 22
 perft 2 479
 perft 3 11475
@@ -4970,7 +4970,7 @@ perft 5 6831555
 perft 6 167329117
 
 id 552
-epd r1kbb1qr/2pppppp/np2n3/p7/2P3P1/8/PP1PPPQP/RNKBBN1R w HAha - 1 9
+epd r1kbb1qr/2pppppp/np2n3/p7/2P3P1/8/PP1PPPQP/RNKBBN1R w HAha -
 perft 1 32
 perft 2 723
 perft 3 23953
@@ -4979,7 +4979,7 @@ perft 5 19472074
 perft 6 504622114
 
 id 553
-epd rnknbb1r/p1ppp1pp/8/1p1P1p1q/8/P1P5/1P2PPPP/RNKNBBQR w HAha - 1 9
+epd rnknbb1r/p1ppp1pp/8/1p1P1p1q/8/P1P5/1P2PPPP/RNKNBBQR w HAha -
 perft 1 19
 perft 2 607
 perft 3 12733
@@ -4988,7 +4988,7 @@ perft 5 9753617
 perft 6 325177085
 
 id 554
-epd rnkn1qrb/pp1bp1pp/2p5/1N1p1p2/8/2P5/PPKPPPPP/R2NBQRB w ga - 2 9
+epd rnkn1qrb/pp1bp1pp/2p5/1N1p1p2/8/2P5/PPKPPPPP/R2NBQRB w ga -
 perft 1 27
 perft 2 533
 perft 3 14549
@@ -4997,7 +4997,7 @@ perft 5 9206957
 perft 6 232664675
 
 id 555
-epd r1nknqbr/pp2p1pp/2p2p2/3p4/6P1/PP1P4/2P1PP1b/RBNKNQBR w HAha - 0 9
+epd r1nknqbr/pp2p1pp/2p2p2/3p4/6P1/PP1P4/2P1PP1b/RBNKNQBR w HAha -
 perft 1 20
 perft 2 582
 perft 3 13777
@@ -5006,7 +5006,7 @@ perft 5 10708639
 perft 6 326565393
 
 id 556
-epd rnkb1qbr/p1pp1p1p/1p2pn2/1Q4p1/4P3/N4P2/PPPP2PP/R1KBN1BR w HAha - 0 9
+epd rnkb1qbr/p1pp1p1p/1p2pn2/1Q4p1/4P3/N4P2/PPPP2PP/R1KBN1BR w HAha -
 perft 1 40
 perft 2 1038
 perft 3 39356
@@ -5015,7 +5015,7 @@ perft 5 39145902
 perft 6 1079612614
 
 id 557
-epd rn2qbbr/1pkppp1p/p3n1p1/8/8/2P2P2/PP1PP1PP/RNKN1BBR w HA - 0 9
+epd rn2qbbr/1pkppp1p/p3n1p1/8/8/2P2P2/PP1PP1PP/RNKN1BBR w HA -
 perft 1 24
 perft 2 605
 perft 3 14888
@@ -5024,7 +5024,7 @@ perft 5 9687507
 perft 6 260874068
 
 id 558
-epd rn1nqrbb/p1kppp1p/8/1pp3p1/1P6/2N1P3/P1PP1PPP/RK1NQRBB w - - 0 9
+epd rn1nqrbb/p1kppp1p/8/1pp3p1/1P6/2N1P3/P1PP1PPP/RK1NQRBB w - -
 perft 1 21
 perft 2 540
 perft 3 12489
@@ -5033,7 +5033,7 @@ perft 5 8436136
 perft 6 237525904
 
 id 559
-epd bbrnknrq/1pp3pp/p2p1p2/4p3/P7/1P2N3/2PPPPPP/BBRN1RKQ w gc - 0 9
+epd bbrnknrq/1pp3pp/p2p1p2/4p3/P7/1P2N3/2PPPPPP/BBRN1RKQ w gc -
 perft 1 24
 perft 2 527
 perft 3 13900
@@ -5042,7 +5042,7 @@ perft 5 9139962
 perft 6 226253685
 
 id 560
-epd brnb1nrq/pppp1kpp/4p3/8/5p1P/P1P3P1/1P1PPP2/BRNBKNRQ w GB - 1 9
+epd brnb1nrq/pppp1kpp/4p3/8/5p1P/P1P3P1/1P1PPP2/BRNBKNRQ w GB -
 perft 1 29
 perft 2 773
 perft 3 23904
@@ -5051,7 +5051,7 @@ perft 5 20503775
 perft 6 560338709
 
 id 561
-epd br1k1brq/ppppp2p/1n1n1pp1/8/P1P5/3P2P1/1P2PP1P/BRNKNBRQ w GBgb - 0 9
+epd br1k1brq/ppppp2p/1n1n1pp1/8/P1P5/3P2P1/1P2PP1P/BRNKNBRQ w GBgb -
 perft 1 28
 perft 2 811
 perft 3 23550
@@ -5060,7 +5060,7 @@ perft 5 19913758
 perft 6 565143976
 
 id 562
-epd 1r1knrqb/n1pppppp/p1b5/1p6/8/3N1P2/PPPPP1PP/BRNK1RQB w fb - 3 9
+epd 1r1knrqb/n1pppppp/p1b5/1p6/8/3N1P2/PPPPP1PP/BRNK1RQB w fb -
 perft 1 29
 perft 2 753
 perft 3 23210
@@ -5069,7 +5069,7 @@ perft 5 20044474
 perft 6 558383603
 
 id 563
-epd rbbnk1rq/pppppppp/8/3Pn3/8/4P1P1/PPP2P1P/RBBNKNRQ w GAga - 1 9
+epd rbbnk1rq/pppppppp/8/3Pn3/8/4P1P1/PPP2P1P/RBBNKNRQ w GAga -
 perft 1 22
 perft 2 551
 perft 3 12619
@@ -5078,7 +5078,7 @@ perft 5 8204171
 perft 6 217689974
 
 id 564
-epd rnbbk1rq/2pppp1p/p3n1p1/1p6/P3N3/8/1PPPPPPP/RNBB1KRQ w ga - 0 9
+epd rnbbk1rq/2pppp1p/p3n1p1/1p6/P3N3/8/1PPPPPPP/RNBB1KRQ w ga -
 perft 1 26
 perft 2 742
 perft 3 20061
@@ -5087,7 +5087,7 @@ perft 5 16787080
 perft 6 525678162
 
 id 565
-epd rnbkn1rq/ppppppb1/6p1/7p/2B2P2/1P2P3/P1PP2PP/RNBKN1RQ w GAga - 1 9
+epd rnbkn1rq/ppppppb1/6p1/7p/2B2P2/1P2P3/P1PP2PP/RNBKN1RQ w GAga -
 perft 1 28
 perft 2 799
 perft 3 23210
@@ -5096,7 +5096,7 @@ perft 5 20755098
 perft 6 639632905
 
 id 566
-epd rn1knrqb/p2pppp1/b1p5/1p5p/2P2P2/1P6/P2PP1PP/RNBKNRQB w FAfa - 1 9
+epd rn1knrqb/p2pppp1/b1p5/1p5p/2P2P2/1P6/P2PP1PP/RNBKNRQB w FAfa -
 perft 1 30
 perft 2 579
 perft 3 18481
@@ -5105,7 +5105,7 @@ perft 5 13257198
 perft 6 311282465
 
 id 567
-epd rbnkbnrq/pp2p1Np/2p2p2/8/3p4/8/PPPPPPPP/RBNKBR1Q w Aga - 0 9
+epd rbnkbnrq/pp2p1Np/2p2p2/8/3p4/8/PPPPPPPP/RBNKBR1Q w Aga -
 perft 1 23
 perft 2 670
 perft 3 16435
@@ -5114,7 +5114,7 @@ perft 5 13012378
 perft 6 411860744
 
 id 568
-epd rk1bbnrq/ppp1pppp/n7/3p4/5P2/3P2NP/PPP1P1P1/RNKBB1RQ w GA - 0 9
+epd rk1bbnrq/ppp1pppp/n7/3p4/5P2/3P2NP/PPP1P1P1/RNKBB1RQ w GA -
 perft 1 26
 perft 2 597
 perft 3 16238
@@ -5123,7 +5123,7 @@ perft 5 11269462
 perft 6 296701249
 
 id 569
-epd r1knbbrq/pppp2p1/2n1p2p/5p2/4P3/P1PP4/1P3PPP/RNKNBBRQ w GAga - 1 9
+epd r1knbbrq/pppp2p1/2n1p2p/5p2/4P3/P1PP4/1P3PPP/RNKNBBRQ w GAga -
 perft 1 20
 perft 2 596
 perft 3 13091
@@ -5132,7 +5132,7 @@ perft 5 9416862
 perft 6 293659781
 
 id 570
-epd rnknbrqb/p1p1pp1p/3p4/1p1N2p1/8/N7/PPPPPPPP/1RK1BRQB w Ffa - 0 9
+epd rnknbrqb/p1p1pp1p/3p4/1p1N2p1/8/N7/PPPPPPPP/1RK1BRQB w Ffa -
 perft 1 26
 perft 2 724
 perft 3 18942
@@ -5141,7 +5141,7 @@ perft 5 15257204
 perft 6 461293885
 
 id 571
-epd rbnknrb1/1p1ppp1p/p1p3p1/8/1P3P2/1R6/PqPPP1PP/RBNKN1BQ w Afa - 0 9
+epd rbnknrb1/1p1ppp1p/p1p3p1/8/1P3P2/1R6/PqPPP1PP/RBNKN1BQ w Afa -
 perft 1 31
 perft 2 1183
 perft 3 34723
@@ -5150,7 +5150,7 @@ perft 5 38722152
 perft 6 1421492227
 
 id 572
-epd rnkbnrbq/2p1ppp1/p7/1p1p3p/3P4/1P4P1/P1P1PP1P/RNKBNRBQ w FAfa - 0 9
+epd rnkbnrbq/2p1ppp1/p7/1p1p3p/3P4/1P4P1/P1P1PP1P/RNKBNRBQ w FAfa -
 perft 1 24
 perft 2 506
 perft 3 12748
@@ -5159,7 +5159,7 @@ perft 5 8086100
 perft 6 207129256
 
 id 573
-epd r1knrbbq/pp1ppppp/2p1n3/8/2P3P1/P7/1PKPPP1P/RN1NRBBQ w ea - 0 9
+epd r1knrbbq/pp1ppppp/2p1n3/8/2P3P1/P7/1PKPPP1P/RN1NRBBQ w ea -
 perft 1 28
 perft 2 570
 perft 3 16037
@@ -5168,7 +5168,7 @@ perft 5 10278695
 perft 6 242592363
 
 id 574
-epd rnknrq1b/ppp1p1p1/4b3/3p1p1p/6P1/P4P2/1PPPPQ1P/RNKNR1BB w EAea - 2 9
+epd rnknrq1b/ppp1p1p1/4b3/3p1p1p/6P1/P4P2/1PPPPQ1P/RNKNR1BB w EAea -
 perft 1 30
 perft 2 739
 perft 3 23124
@@ -5177,7 +5177,7 @@ perft 5 19252739
 perft 6 521629794
 
 id 575
-epd bbqr1krn/pppp1p1p/5n2/4p1p1/3P4/P3QP2/1PP1P1PP/BB1RNKRN w GDgd - 0 9
+epd bbqr1krn/pppp1p1p/5n2/4p1p1/3P4/P3QP2/1PP1P1PP/BB1RNKRN w GDgd -
 perft 1 31
 perft 2 799
 perft 3 25627
@@ -5186,7 +5186,7 @@ perft 5 22172123
 perft 6 609277274
 
 id 576
-epd bq1b1krn/pp1ppppp/3n4/2r5/3p3N/6N1/PPP1PPPP/BQRB1KR1 w GCg - 2 9
+epd bq1b1krn/pp1ppppp/3n4/2r5/3p3N/6N1/PPP1PPPP/BQRB1KR1 w GCg -
 perft 1 21
 perft 2 798
 perft 3 18571
@@ -5195,7 +5195,7 @@ perft 5 17546069
 perft 6 647165916
 
 id 577
-epd bqrnkbrn/2pp1pp1/p7/1p2p2p/1P6/4N3/P1PPPPPP/BQR1KBRN w GCgc - 0 9
+epd bqrnkbrn/2pp1pp1/p7/1p2p2p/1P6/4N3/P1PPPPPP/BQR1KBRN w GCgc -
 perft 1 27
 perft 2 783
 perft 3 22327
@@ -5204,7 +5204,7 @@ perft 5 20059741
 perft 6 624462073
 
 id 578
-epd bqr1krnb/1np1pppp/8/pp1p4/8/2P2N2/PP1PPPPP/BQRNKR1B w FCfc - 0 9
+epd bqr1krnb/1np1pppp/8/pp1p4/8/2P2N2/PP1PPPPP/BQRNKR1B w FCfc -
 perft 1 28
 perft 2 636
 perft 3 18874
@@ -5213,7 +5213,7 @@ perft 5 14237097
 perft 6 372181570
 
 id 579
-epd qbb1rkrn/1ppppppp/p7/7n/8/P2P4/1PP1PPPP/QBBRNKRN w Gg - 0 9
+epd qbb1rkrn/1ppppppp/p7/7n/8/P2P4/1PP1PPPP/QBBRNKRN w Gg -
 perft 1 25
 perft 2 547
 perft 3 13837
@@ -5222,7 +5222,7 @@ perft 5 8849383
 perft 6 229112926
 
 id 580
-epd 1rbbnkrn/p1p1pp1p/2q5/1p1p2p1/8/2P3P1/PP1PPP1P/QRBBNKRN w GBgb - 2 9
+epd 1rbbnkrn/p1p1pp1p/2q5/1p1p2p1/8/2P3P1/PP1PPP1P/QRBBNKRN w GBgb -
 perft 1 24
 perft 2 1010
 perft 3 24370
@@ -5231,7 +5231,7 @@ perft 5 24328258
 perft 6 961371180
 
 id 581
-epd qrb1kbrn/ppp1p2p/4npp1/3p4/8/1PP4P/PR1PPPP1/Q1BNKBRN w Ggb - 1 9
+epd qrb1kbrn/ppp1p2p/4npp1/3p4/8/1PP4P/PR1PPPP1/Q1BNKBRN w Ggb -
 perft 1 18
 perft 2 451
 perft 3 9291
@@ -5240,7 +5240,7 @@ perft 5 5568106
 perft 6 155744022
 
 id 582
-epd qr2krnb/p1p1pppp/b1np4/1p6/3NP3/7P/PPPP1PP1/QRBNKR1B w FBfb - 2 9
+epd qr2krnb/p1p1pppp/b1np4/1p6/3NP3/7P/PPPP1PP1/QRBNKR1B w FBfb -
 perft 1 25
 perft 2 667
 perft 3 17081
@@ -5249,7 +5249,7 @@ perft 5 12458875
 perft 6 361495148
 
 id 583
-epd qbrnbkrn/ppp3pp/3p4/5p2/2P1pP2/6PP/PP1PP3/QBRNBKRN w GCgc - 0 9
+epd qbrnbkrn/ppp3pp/3p4/5p2/2P1pP2/6PP/PP1PP3/QBRNBKRN w GCgc -
 perft 1 24
 perft 2 650
 perft 3 16835
@@ -5258,7 +5258,7 @@ perft 5 12187382
 perft 6 326834539
 
 id 584
-epd qrnb1krn/ppp1p1pp/5p2/2Np4/b2P4/2P5/PP2PPPP/QR1BBKRN w GBgb - 0 9
+epd qrnb1krn/ppp1p1pp/5p2/2Np4/b2P4/2P5/PP2PPPP/QR1BBKRN w GBgb -
 perft 1 27
 perft 2 641
 perft 3 17490
@@ -5267,7 +5267,7 @@ perft 5 12103076
 perft 6 310695797
 
 id 585
-epd qrnkbbrn/pp2pp2/8/2pp2pp/6PP/3P4/PPPKPP2/QRN1BBRN w gb - 0 9
+epd qrnkbbrn/pp2pp2/8/2pp2pp/6PP/3P4/PPPKPP2/QRN1BBRN w gb -
 perft 1 22
 perft 2 554
 perft 3 13116
@@ -5276,7 +5276,7 @@ perft 5 9014737
 perft 6 258925091
 
 id 586
-epd qrnkbrnb/p1p1ppp1/1p6/3p4/3P3p/5N1P/PPP1PPP1/QRNKBR1B w FBfb - 0 9
+epd qrnkbrnb/p1p1ppp1/1p6/3p4/3P3p/5N1P/PPP1PPP1/QRNKBR1B w FBfb -
 perft 1 24
 perft 2 529
 perft 3 13205
@@ -5285,7 +5285,7 @@ perft 5 8295874
 perft 6 213856651
 
 id 587
-epd qbr1krbn/1pppp1pp/p7/5pn1/2PP4/8/PPB1PPPP/Q1RNKRBN w FCfc - 0 9
+epd qbr1krbn/1pppp1pp/p7/5pn1/2PP4/8/PPB1PPPP/Q1RNKRBN w FCfc -
 perft 1 26
 perft 2 831
 perft 3 21651
@@ -5294,7 +5294,7 @@ perft 5 18961456
 perft 6 621884383
 
 id 588
-epd 1rnbkrbn/1qp1pppp/3p4/pp6/4P3/1NP4P/PP1P1PP1/QR1BKRBN w FBfb - 0 9
+epd 1rnbkrbn/1qp1pppp/3p4/pp6/4P3/1NP4P/PP1P1PP1/QR1BKRBN w FBfb -
 perft 1 24
 perft 2 597
 perft 3 15089
@@ -5303,7 +5303,7 @@ perft 5 10832084
 perft 6 307793179
 
 id 589
-epd q1rkrbbn/ppp1pppp/8/3p4/1PnP4/P7/1RP1PPPP/Q1NKRBBN w Ee - 1 9
+epd q1rkrbbn/ppp1pppp/8/3p4/1PnP4/P7/1RP1PPPP/Q1NKRBBN w Ee -
 perft 1 20
 perft 2 520
 perft 3 10769
@@ -5312,7 +5312,7 @@ perft 5 6452205
 perft 6 170268300
 
 id 590
-epd qrnkrn1b/ppppp1pp/4b3/7P/6p1/P7/1PPPPP2/QRNKRNBB w EBeb - 0 9
+epd qrnkrn1b/ppppp1pp/4b3/7P/6p1/P7/1PPPPP2/QRNKRNBB w EBeb -
 perft 1 26
 perft 2 566
 perft 3 15623
@@ -5321,7 +5321,7 @@ perft 5 10940750
 perft 6 287987207
 
 id 591
-epd bbr1nkrn/ppp1pppp/3q4/3p4/8/P7/1PPPPPPP/BBRQNRKN w gc - 5 9
+epd bbr1nkrn/ppp1pppp/3q4/3p4/8/P7/1PPPPPPP/BBRQNRKN w gc -
 perft 1 19
 perft 2 661
 perft 3 13895
@@ -5330,7 +5330,7 @@ perft 5 10870247
 perft 6 356399665
 
 id 592
-epd brqbnkrn/pp1pp2p/5pp1/2p5/4P3/P2P1N2/1PP2PPP/BRQB1KRN w GBgb - 0 9
+epd brqbnkrn/pp1pp2p/5pp1/2p5/4P3/P2P1N2/1PP2PPP/BRQB1KRN w GBgb -
 perft 1 27
 perft 2 679
 perft 3 19916
@@ -5339,7 +5339,7 @@ perft 5 16391730
 perft 6 455940859
 
 id 593
-epd 2qnkbrn/p1pppppp/8/1r6/1p2bP2/7N/PPPPP1PP/BR1QKBRN w GBg - 4 9
+epd 2qnkbrn/p1pppppp/8/1r6/1p2bP2/7N/PPPPP1PP/BR1QKBRN w GBg -
 perft 1 18
 perft 2 774
 perft 3 15713
@@ -5348,7 +5348,7 @@ perft 5 14371755
 perft 6 559579332
 
 id 594
-epd r1qnkr1b/p1pppppp/7n/1p6/8/1P3b1N/PRPPPPPP/B1QNK1RB w f - 5 9
+epd r1qnkr1b/p1pppppp/7n/1p6/8/1P3b1N/PRPPPPPP/B1QNK1RB w f -
 perft 1 21
 perft 2 677
 perft 3 15437
@@ -5357,7 +5357,7 @@ perft 5 12463801
 perft 6 410795298
 
 id 595
-epd rbbqn1rn/pppp1pp1/3k4/4p2Q/2PPP3/8/PP3PPP/RBB1NKRN w GA - 1 9
+epd rbbqn1rn/pppp1pp1/3k4/4p2Q/2PPP3/8/PP3PPP/RBB1NKRN w GA -
 perft 1 40
 perft 2 742
 perft 3 28757
@@ -5366,7 +5366,7 @@ perft 5 21852196
 perft 6 471452088
 
 id 596
-epd rqbbnkrn/3pppp1/p1p4p/1p6/5P2/P2N4/1PPPP1PP/RQBBK1RN w ga - 0 9
+epd rqbbnkrn/3pppp1/p1p4p/1p6/5P2/P2N4/1PPPP1PP/RQBBK1RN w ga -
 perft 1 23
 perft 2 665
 perft 3 16400
@@ -5375,7 +5375,7 @@ perft 5 12794736
 perft 6 396640086
 
 id 597
-epd r2nkbrn/pp2pppp/8/2ppqb2/2P3P1/5P2/PP1PPN1P/RQB1KBRN w GAga - 3 9
+epd r2nkbrn/pp2pppp/8/2ppqb2/2P3P1/5P2/PP1PPN1P/RQB1KBRN w GAga -
 perft 1 28
 perft 2 1108
 perft 3 31164
@@ -5384,7 +5384,7 @@ perft 5 34780853
 perft 6 1292405738
 
 id 598
-epd rqbnk1nb/p1pppr1p/5p2/1p4p1/1PP1P3/8/P2P1PPP/RQBNKRNB w FAa - 1 9
+epd rqbnk1nb/p1pppr1p/5p2/1p4p1/1PP1P3/8/P2P1PPP/RQBNKRNB w FAa -
 perft 1 26
 perft 2 650
 perft 3 18208
@@ -5393,7 +5393,7 @@ perft 5 14565370
 perft 6 416833400
 
 id 599
-epd rbqnb1rn/p1pp1kpp/1p2pp2/8/4P2P/P5P1/1PPP1P2/RBQNBKRN w GA - 0 9
+epd rbqnb1rn/p1pp1kpp/1p2pp2/8/4P2P/P5P1/1PPP1P2/RBQNBKRN w GA -
 perft 1 20
 perft 2 437
 perft 3 9423
@@ -5402,7 +5402,7 @@ perft 5 5282124
 perft 6 132309824
 
 id 600
-epd rqnbbkrn/p1p1pppp/3p4/1p5B/8/1P1NP3/P1PP1PPP/RQ2BKRN w GAga - 0 9
+epd rqnbbkrn/p1p1pppp/3p4/1p5B/8/1P1NP3/P1PP1PPP/RQ2BKRN w GAga -
 perft 1 30
 perft 2 606
 perft 3 18382
@@ -5411,7 +5411,7 @@ perft 5 12989786
 perft 6 326601372
 
 id 601
-epd rqnkbbr1/ppppp1pp/5p2/7n/8/2PNP2P/PP1P1PP1/RQ1KBBRN w GAga - 1 9
+epd rqnkbbr1/ppppp1pp/5p2/7n/8/2PNP2P/PP1P1PP1/RQ1KBBRN w GAga -
 perft 1 23
 perft 2 482
 perft 3 12506
@@ -5420,7 +5420,7 @@ perft 5 8430874
 perft 6 217797292
 
 id 602
-epd r1nkbrnb/2ppppp1/1q6/pp5p/1P6/P3P3/2PPKPPP/RQN1BRNB w fa - 2 9
+epd r1nkbrnb/2ppppp1/1q6/pp5p/1P6/P3P3/2PPKPPP/RQN1BRNB w fa -
 perft 1 25
 perft 2 827
 perft 3 21518
@@ -5429,7 +5429,7 @@ perft 5 19290675
 perft 6 632892337
 
 id 603
-epd rbqnkrbn/p1ppppp1/7p/1p6/7P/2N1P3/PPPP1PPB/RBQ1KR1N w FAfa - 1 9
+epd rbqnkrbn/p1ppppp1/7p/1p6/7P/2N1P3/PPPP1PPB/RBQ1KR1N w FAfa -
 perft 1 30
 perft 2 627
 perft 3 18566
@@ -5438,7 +5438,7 @@ perft 5 12976682
 perft 6 337377291
 
 id 604
-epd r1nbkrbn/p1qp1ppp/8/1pp1p3/2P1P3/6P1/PP1PBP1P/RQN1KRBN w FAfa - 2 9
+epd r1nbkrbn/p1qp1ppp/8/1pp1p3/2P1P3/6P1/PP1PBP1P/RQN1KRBN w FAfa -
 perft 1 22
 perft 2 616
 perft 3 14503
@@ -5447,7 +5447,7 @@ perft 5 10850952
 perft 6 335943324
 
 id 605
-epd rqnkr1bn/ppp1ppb1/3p2pp/8/P7/2P2P2/1PKPP1PP/RQN1RBBN w ea - 1 9
+epd rqnkr1bn/ppp1ppb1/3p2pp/8/P7/2P2P2/1PKPP1PP/RQN1RBBN w ea -
 perft 1 31
 perft 2 679
 perft 3 21365
@@ -5456,7 +5456,7 @@ perft 5 15661072
 perft 6 379844460
 
 id 606
-epd r2krnbb/qppp1ppp/1n6/p3p3/PP6/4N3/N1PPPPPP/RQ1KR1BB w EAea - 4 9
+epd r2krnbb/qppp1ppp/1n6/p3p3/PP6/4N3/N1PPPPPP/RQ1KR1BB w EAea -
 perft 1 24
 perft 2 645
 perft 3 17054
@@ -5465,7 +5465,7 @@ perft 5 13837270
 perft 6 416239106
 
 id 607
-epd bbr1qk1n/1ppppp1p/2n5/p7/P7/1P2P3/2PP1PrP/1BRNQKRN w GCc - 0 9
+epd bbr1qk1n/1ppppp1p/2n5/p7/P7/1P2P3/2PP1PrP/1BRNQKRN w GCc -
 perft 1 18
 perft 2 520
 perft 3 10680
@@ -5474,7 +5474,7 @@ perft 5 7215306
 perft 6 207612575
 
 id 608
-epd brnbq1rn/2ppppkp/p5p1/1p6/8/1BP3P1/PP1PPP1P/BRN1QRKN w - - 0 9
+epd brnbq1rn/2ppppkp/p5p1/1p6/8/1BP3P1/PP1PPP1P/BRN1QRKN w - -
 perft 1 21
 perft 2 625
 perft 3 13989
@@ -5483,7 +5483,7 @@ perft 5 9929336
 perft 6 300902534
 
 id 609
-epd brn1kbrn/pp2p1pp/3p4/q1p2p2/2P4P/6P1/PP1PPP2/BRNQKBRN w GBgb - 1 9
+epd brn1kbrn/pp2p1pp/3p4/q1p2p2/2P4P/6P1/PP1PPP2/BRNQKBRN w GBgb -
 perft 1 18
 perft 2 477
 perft 3 10205
@@ -5492,7 +5492,7 @@ perft 5 6720181
 perft 6 187205941
 
 id 610
-epd brn1krnb/p3pppp/1qpp4/1p6/2P3P1/1P6/P2PPP1P/BRNQKRNB w FBfb - 1 9
+epd brn1krnb/p3pppp/1qpp4/1p6/2P3P1/1P6/P2PPP1P/BRNQKRNB w FBfb -
 perft 1 30
 perft 2 835
 perft 3 24761
@@ -5501,7 +5501,7 @@ perft 5 21806428
 perft 6 654487872
 
 id 611
-epd r1b1qkrn/1p1ppppp/p1p1n3/8/4P3/1PN5/P1PPQPPb/RBB2KRN w GAga - 0 9
+epd r1b1qkrn/1p1ppppp/p1p1n3/8/4P3/1PN5/P1PPQPPb/RBB2KRN w GAga -
 perft 1 28
 perft 2 825
 perft 3 24536
@@ -5510,7 +5510,7 @@ perft 5 22079005
 perft 6 647939781
 
 id 612
-epd r1bbqk1n/p1pppprp/n7/1p4p1/5P2/2N3N1/PPPPP1PP/1RBBQKR1 w Ga - 4 9
+epd r1bbqk1n/p1pppprp/n7/1p4p1/5P2/2N3N1/PPPPP1PP/1RBBQKR1 w Ga -
 perft 1 25
 perft 2 545
 perft 3 14657
@@ -5519,7 +5519,7 @@ perft 5 10271111
 perft 6 273864588
 
 id 613
-epd rnbqkbrn/p1pp1pp1/4p3/7p/2p4P/2P5/PP1PPPP1/R1BQKBRN w GAga - 0 9
+epd rnbqkbrn/p1pp1pp1/4p3/7p/2p4P/2P5/PP1PPPP1/R1BQKBRN w GAga -
 perft 1 17
 perft 2 445
 perft 3 9076
@@ -5528,7 +5528,7 @@ perft 5 5918310
 perft 6 174733195
 
 id 614
-epd rnbqkrnb/1p1pp1p1/2p4p/p4p2/3P2P1/7N/PPPBPP1P/RN1QKR1B w FAfa - 0 9
+epd rnbqkrnb/1p1pp1p1/2p4p/p4p2/3P2P1/7N/PPPBPP1P/RN1QKR1B w FAfa -
 perft 1 34
 perft 2 746
 perft 3 25319
@@ -5537,7 +5537,7 @@ perft 5 21285553
 perft 6 569141201
 
 id 615
-epd rbnqbkr1/1ppppp2/p5n1/6pp/4P3/1N6/PPPP1PPP/RBQ1BRKN w ga - 2 9
+epd rbnqbkr1/1ppppp2/p5n1/6pp/4P3/1N6/PPPP1PPP/RBQ1BRKN w ga -
 perft 1 18
 perft 2 466
 perft 3 9683
@@ -5546,7 +5546,7 @@ perft 5 6051500
 perft 6 170135726
 
 id 616
-epd rnqb1krn/ppppp1p1/7p/7b/P1P2pPP/8/1P1PPP2/RNQBBKRN w GAga - 0 9
+epd rnqb1krn/ppppp1p1/7p/7b/P1P2pPP/8/1P1PPP2/RNQBBKRN w GAga -
 perft 1 24
 perft 2 575
 perft 3 15400
@@ -5555,7 +5555,7 @@ perft 5 11039042
 perft 6 291243811
 
 id 617
-epd rnqkbbr1/p1pp1ppp/4p3/1p6/P3P2n/5P2/1PPP1NPP/RNQKBBR1 w GAga - 2 9
+epd rnqkbbr1/p1pp1ppp/4p3/1p6/P3P2n/5P2/1PPP1NPP/RNQKBBR1 w GAga -
 perft 1 27
 perft 2 803
 perft 3 22883
@@ -5564,7 +5564,7 @@ perft 5 20666099
 perft 6 638696065
 
 id 618
-epd rn1kbrnb/1qppp1pp/1p6/p4p2/1B1P4/1P5N/P1P1PPPP/RNQK1R1B w FAfa - 0 9
+epd rn1kbrnb/1qppp1pp/1p6/p4p2/1B1P4/1P5N/P1P1PPPP/RNQK1R1B w FAfa -
 perft 1 37
 perft 2 1209
 perft 3 43015
@@ -5573,7 +5573,7 @@ perft 5 49748034
 perft 6 1671593862
 
 id 619
-epd rbnqkrbn/Bppp1p2/p5pp/4p3/5P2/6PP/PPPPP3/RBNQKR1N w FAfa - 0 9
+epd rbnqkrbn/Bppp1p2/p5pp/4p3/5P2/6PP/PPPPP3/RBNQKR1N w FAfa -
 perft 1 29
 perft 2 720
 perft 3 20434
@@ -5582,7 +5582,7 @@ perft 5 15384362
 perft 6 421343249
 
 id 620
-epd rnqbkr1n/1p1ppbpp/3p1p2/p7/8/1P6/P1PPPPPP/R1QBKRBN w FAfa - 0 9
+epd rnqbkr1n/1p1ppbpp/3p1p2/p7/8/1P6/P1PPPPPP/R1QBKRBN w FAfa -
 perft 1 20
 perft 2 657
 perft 3 14424
@@ -5591,7 +5591,7 @@ perft 5 11843134
 perft 6 413965054
 
 id 621
-epd rnqkrb1n/ppppp3/6p1/5p1p/2b2P2/P1N5/1PPPP1PP/RQ1KRBBN w EAea - 1 9
+epd rnqkrb1n/ppppp3/6p1/5p1p/2b2P2/P1N5/1PPPP1PP/RQ1KRBBN w EAea -
 perft 1 28
 perft 2 749
 perft 3 20684
@@ -5600,7 +5600,7 @@ perft 5 15379233
 perft 6 417191461
 
 id 622
-epd rnqk1nbb/1pp2ppp/3pr3/p3p3/3P1P2/2N3N1/PPP1P1PP/R1QKR1BB w EAa - 1 9
+epd rnqk1nbb/1pp2ppp/3pr3/p3p3/3P1P2/2N3N1/PPP1P1PP/R1QKR1BB w EAa -
 perft 1 29
 perft 2 883
 perft 3 26412
@@ -5609,7 +5609,7 @@ perft 5 25144295
 perft 6 789705382
 
 id 623
-epd bbr1kqrn/p1p1ppp1/1p2n2p/3p4/1P1P4/2N5/P1P1PPPP/BBR1KQRN w GCgc - 0 9
+epd bbr1kqrn/p1p1ppp1/1p2n2p/3p4/1P1P4/2N5/P1P1PPPP/BBR1KQRN w GCgc -
 perft 1 22
 perft 2 485
 perft 3 11475
@@ -5618,7 +5618,7 @@ perft 5 6825123
 perft 6 171793012
 
 id 624
-epd brnbkq1n/ppp1ppr1/7p/3p2p1/2P3PP/8/PPBPPP2/BRN1KQRN w GBb - 2 9
+epd brnbkq1n/ppp1ppr1/7p/3p2p1/2P3PP/8/PPBPPP2/BRN1KQRN w GBb -
 perft 1 30
 perft 2 634
 perft 3 19017
@@ -5627,7 +5627,7 @@ perft 5 13674310
 perft 6 345386924
 
 id 625
-epd brnkqbr1/1pppp1pp/5p2/p7/P1P1P2n/8/1P1P1PP1/BRNKQBRN w GBgb - 0 9
+epd brnkqbr1/1pppp1pp/5p2/p7/P1P1P2n/8/1P1P1PP1/BRNKQBRN w GBgb -
 perft 1 21
 perft 2 504
 perft 3 11672
@@ -5636,7 +5636,7 @@ perft 5 7778289
 perft 6 217596497
 
 id 626
-epd b1rkqrnb/p1ppp1pp/1p1n4/5p2/5P2/PN5P/1PPPP1P1/BR1KQRNB w FBf - 0 9
+epd b1rkqrnb/p1ppp1pp/1p1n4/5p2/5P2/PN5P/1PPPP1P1/BR1KQRNB w FBf -
 perft 1 23
 perft 2 688
 perft 3 17259
@@ -5645,7 +5645,7 @@ perft 5 14228372
 perft 6 451842354
 
 id 627
-epd 1bbnkqrn/rppppp2/p5p1/7p/7P/P1P1P3/1P1P1PP1/RBBNKQRN w GAg - 1 9
+epd 1bbnkqrn/rppppp2/p5p1/7p/7P/P1P1P3/1P1P1PP1/RBBNKQRN w GAg -
 perft 1 25
 perft 2 450
 perft 3 12391
@@ -5654,7 +5654,7 @@ perft 5 7752404
 perft 6 185393913
 
 id 628
-epd rnbbkqr1/1pppppp1/7p/p3n3/PP5P/8/1BPPPPP1/RN1BKQRN w GAga - 0 9
+epd rnbbkqr1/1pppppp1/7p/p3n3/PP5P/8/1BPPPPP1/RN1BKQRN w GAga -
 perft 1 23
 perft 2 543
 perft 3 12224
@@ -5663,7 +5663,7 @@ perft 5 7549008
 perft 6 199883770
 
 id 629
-epd r1bkqbrn/ppppp1pp/8/5p2/3nPP2/1P4N1/P1PP2PP/RNBKQBR1 w GAga - 1 9
+epd r1bkqbrn/ppppp1pp/8/5p2/3nPP2/1P4N1/P1PP2PP/RNBKQBR1 w GAga -
 perft 1 27
 perft 2 751
 perft 3 21158
@@ -5672,7 +5672,7 @@ perft 5 17989920
 perft 6 527273615
 
 id 630
-epd rnbkqr1b/1p1pp1pp/p4p1n/2p5/1P5P/N4P2/P1PPP1P1/R1BKQRNB w FAfa - 0 9
+epd rnbkqr1b/1p1pp1pp/p4p1n/2p5/1P5P/N4P2/P1PPP1P1/R1BKQRNB w FAfa -
 perft 1 21
 perft 2 498
 perft 3 11738
@@ -5681,7 +5681,7 @@ perft 5 7808375
 perft 6 216224115
 
 id 631
-epd rbnkbqrn/p1p3pp/1p1p4/B3pp2/3P2P1/6N1/PPP1PP1P/RBNK1QR1 w GAga - 0 9
+epd rbnkbqrn/p1p3pp/1p1p4/B3pp2/3P2P1/6N1/PPP1PP1P/RBNK1QR1 w GAga -
 perft 1 34
 perft 2 977
 perft 3 33464
@@ -5690,7 +5690,7 @@ perft 5 33318567
 perft 6 978991050
 
 id 632
-epd r1kbbqrn/ppp3pp/2np1p2/1P2p3/3P1P2/8/P1P1P1PP/RNKBBQRN w GAga - 0 9
+epd r1kbbqrn/ppp3pp/2np1p2/1P2p3/3P1P2/8/P1P1P1PP/RNKBBQRN w GAga -
 perft 1 32
 perft 2 920
 perft 3 28916
@@ -5699,7 +5699,7 @@ perft 5 26763259
 perft 6 797524786
 
 id 633
-epd rk1qbbrn/p2npppp/1p6/2p4Q/8/4P3/PPPP1PPP/RNK1B1RN w GA - 2 9
+epd rk1qbbrn/p2npppp/1p6/2p4Q/8/4P3/PPPP1PPP/RNK1B1RN w GA -
 perft 1 35
 perft 2 657
 perft 3 22359
@@ -5708,7 +5708,7 @@ perft 5 16662477
 perft 6 419496845
 
 id 634
-epd rnk1brnb/pp1p1pp1/8/q1p1p2p/5P2/NP6/P1PPP1PP/R1KQBRNB w FAfa - 1 9
+epd rnk1brnb/pp1p1pp1/8/q1p1p2p/5P2/NP6/P1PPP1PP/R1KQBRNB w FAfa -
 perft 1 26
 perft 2 774
 perft 3 20215
@@ -5717,7 +5717,7 @@ perft 5 16987110
 perft 6 523437649
 
 id 635
-epd rb1kqrbn/npp1ppp1/p7/3P3p/2PP4/8/PP3PPP/RBNKQRBN w FAfa - 0 9
+epd rb1kqrbn/npp1ppp1/p7/3P3p/2PP4/8/PP3PPP/RBNKQRBN w FAfa -
 perft 1 35
 perft 2 775
 perft 3 27395
@@ -5726,7 +5726,7 @@ perft 5 23983464
 perft 6 625669222
 
 id 636
-epd rnkb1rbn/pp1p2pp/8/2p1pp1q/P6P/1PN5/2PPPPP1/R1KBQRBN w FAfa - 1 9
+epd rnkb1rbn/pp1p2pp/8/2p1pp1q/P6P/1PN5/2PPPPP1/R1KBQRBN w FAfa -
 perft 1 22
 perft 2 899
 perft 3 21188
@@ -5735,7 +5735,7 @@ perft 5 21518343
 perft 6 857951339
 
 id 637
-epd rnkqrbbn/1pppp1p1/8/p2N1p1p/2P4P/8/PP1PPPP1/R1KQRBBN w EAea - 0 9
+epd rnkqrbbn/1pppp1p1/8/p2N1p1p/2P4P/8/PP1PPPP1/R1KQRBBN w EAea -
 perft 1 29
 perft 2 585
 perft 3 17571
@@ -5744,7 +5744,7 @@ perft 5 12238776
 perft 6 299752383
 
 id 638
-epd rnk1r1bb/pp1ppppp/1q4n1/2p5/5P1P/3PP3/PPP3P1/RNKQRNBB w EAea - 1 9
+epd rnk1r1bb/pp1ppppp/1q4n1/2p5/5P1P/3PP3/PPP3P1/RNKQRNBB w EAea -
 perft 1 27
 perft 2 884
 perft 3 24613
@@ -5753,7 +5753,7 @@ perft 5 23698701
 perft 6 790239502
 
 id 639
-epd bbrnkrqn/1ppp1p2/6pp/p3p3/5PP1/2PB4/PP1PP2P/B1RNKRQN w FCfc - 0 9
+epd bbrnkrqn/1ppp1p2/6pp/p3p3/5PP1/2PB4/PP1PP2P/B1RNKRQN w FCfc -
 perft 1 37
 perft 2 693
 perft 3 25425
@@ -5762,7 +5762,7 @@ perft 5 20138432
 perft 6 481498664
 
 id 640
-epd b1rbkrqn/ppp2ppp/1n2p3/3p4/6P1/2PP4/PP2PP1P/BRNBKRQN w FBf - 1 9
+epd b1rbkrqn/ppp2ppp/1n2p3/3p4/6P1/2PP4/PP2PP1P/BRNBKRQN w FBf -
 perft 1 21
 perft 2 463
 perft 3 10610
@@ -5771,7 +5771,7 @@ perft 5 6307276
 perft 6 159025909
 
 id 641
-epd brnkrb1n/1pp1p1pp/3p4/p1Nq1p2/2P5/8/PP1PPPPP/BRK1RBQN w eb - 2 9
+epd brnkrb1n/1pp1p1pp/3p4/p1Nq1p2/2P5/8/PP1PPPPP/BRK1RBQN w eb -
 perft 1 27
 perft 2 725
 perft 3 17842
@@ -5780,7 +5780,7 @@ perft 5 12604078
 perft 6 362747791
 
 id 642
-epd brn1r1nb/ppppkppp/4p3/8/2PP1P2/8/PP1KP1PP/BRN1RQNB w - - 1 9
+epd brn1r1nb/ppppkppp/4p3/8/2PP1P2/8/PP1KP1PP/BRN1RQNB w - -
 perft 1 25
 perft 2 623
 perft 3 16874
@@ -5789,7 +5789,7 @@ perft 5 12290985
 perft 6 317097424
 
 id 643
-epd rbb1krqn/1pp1pp1p/p3n1p1/3pP3/8/1PN5/P1PP1PPP/RBB1KRQN w FAfa d6 0 9
+epd rbb1krqn/1pp1pp1p/p3n1p1/3pP3/8/1PN5/P1PP1PPP/RBB1KRQN w FAfa d6
 perft 1 23
 perft 2 529
 perft 3 12641
@@ -5798,7 +5798,7 @@ perft 5 7861413
 perft 6 202594556
 
 id 644
-epd r1bbkrqn/p1pppppp/8/4n3/1p5P/P2P2P1/1PP1PP2/RNBBKRQN w FAfa - 0 9
+epd r1bbkrqn/p1pppppp/8/4n3/1p5P/P2P2P1/1PP1PP2/RNBBKRQN w FAfa -
 perft 1 23
 perft 2 571
 perft 3 13133
@@ -5807,7 +5807,7 @@ perft 5 8699448
 perft 6 243460643
 
 id 645
-epd rnbkrbqn/p1pp1ppp/4p3/1p6/8/BPN3P1/P1PPPP1P/R2KRBQN w EAea - 2 9
+epd rnbkrbqn/p1pp1ppp/4p3/1p6/8/BPN3P1/P1PPPP1P/R2KRBQN w EAea -
 perft 1 29
 perft 2 692
 perft 3 20014
@@ -5816,7 +5816,7 @@ perft 5 14904192
 perft 6 386694739
 
 id 646
-epd rnbkrqn1/pppppp2/8/1Q2b1pp/P3P3/5P2/1PPP2PP/RNBKR1NB w EAea - 0 9
+epd rnbkrqn1/pppppp2/8/1Q2b1pp/P3P3/5P2/1PPP2PP/RNBKR1NB w EAea -
 perft 1 37
 perft 2 1001
 perft 3 36440
@@ -5825,7 +5825,7 @@ perft 5 35626426
 perft 6 993747544
 
 id 647
-epd rbnkbrqn/p1pppp2/7p/1p4pP/3P1P2/8/PPP1P1P1/RBNKBRQN w FAfa - 0 9
+epd rbnkbrqn/p1pppp2/7p/1p4pP/3P1P2/8/PPP1P1P1/RBNKBRQN w FAfa -
 perft 1 30
 perft 2 564
 perft 3 17143
@@ -5834,7 +5834,7 @@ perft 5 11859538
 perft 6 293703269
 
 id 648
-epd 1nkbbrqn/3ppppp/r1p5/pp6/8/4PP2/PPPPN1PP/RNKBBRQ1 w FAf - 2 9
+epd 1nkbbrqn/3ppppp/r1p5/pp6/8/4PP2/PPPPN1PP/RNKBBRQ1 w FAf -
 perft 1 26
 perft 2 546
 perft 3 14641
@@ -5843,7 +5843,7 @@ perft 5 9556962
 perft 6 245137199
 
 id 649
-epd rnkrbbq1/pppppnp1/7p/8/1B1Q1p2/3P1P2/PPP1P1PP/RNKR1B1N w DAda - 2 9
+epd rnkrbbq1/pppppnp1/7p/8/1B1Q1p2/3P1P2/PPP1P1PP/RNKR1B1N w DAda -
 perft 1 43
 perft 2 887
 perft 3 36240
@@ -5852,7 +5852,7 @@ perft 5 33185346
 perft 6 851927292
 
 id 650
-epd 1rkrbqnb/pppppp2/2n3p1/7p/3P3P/P4N2/1PP1PPP1/RNKRBQ1B w DAd - 0 9
+epd 1rkrbqnb/pppppp2/2n3p1/7p/3P3P/P4N2/1PP1PPP1/RNKRBQ1B w DAd -
 perft 1 26
 perft 2 622
 perft 3 16049
@@ -5861,7 +5861,7 @@ perft 5 10786140
 perft 6 285233838
 
 id 651
-epd rbnkr1bn/pp1pqp1p/2p1p3/6p1/3P4/7P/PPP1PPP1/RBNKRQBN w EAea - 0 9
+epd rbnkr1bn/pp1pqp1p/2p1p3/6p1/3P4/7P/PPP1PPP1/RBNKRQBN w EAea -
 perft 1 19
 perft 2 566
 perft 3 12257
@@ -5870,7 +5870,7 @@ perft 5 9107175
 perft 6 293397389
 
 id 652
-epd r1kbrqb1/pppp2pp/2n1p1n1/5p1B/4PP2/P7/1PPP2PP/RNK1RQBN w EAea - 2 9
+epd r1kbrqb1/pppp2pp/2n1p1n1/5p1B/4PP2/P7/1PPP2PP/RNK1RQBN w EAea -
 perft 1 39
 perft 2 1359
 perft 3 53626
@@ -5879,7 +5879,7 @@ perft 5 73871486
 perft 6 2633945690
 
 id 653
-epd rnkrqbbn/p1p3pp/1p1ppp2/8/1P6/3P2P1/PKP1PP1P/RN1RQBBN w da - 0 9
+epd rnkrqbbn/p1p3pp/1p1ppp2/8/1P6/3P2P1/PKP1PP1P/RN1RQBBN w da -
 perft 1 26
 perft 2 776
 perft 3 20735
@@ -5888,7 +5888,7 @@ perft 5 16884013
 perft 6 503561996
 
 id 654
-epd rnkrqnbb/ppp2p1p/3p4/4p1p1/3P3P/N1Q5/PPP1PPP1/R1KR1NBB w DAda - 0 9
+epd rnkrqnbb/ppp2p1p/3p4/4p1p1/3P3P/N1Q5/PPP1PPP1/R1KR1NBB w DAda -
 perft 1 40
 perft 2 1175
 perft 3 45637
@@ -5897,7 +5897,7 @@ perft 5 52620163
 perft 6 1633655838
 
 id 655
-epd bbrnkrn1/p1pppp2/1p6/6pp/3q4/1P3QP1/P1PPPP1P/BBRNKRN1 w FCfc - 0 9
+epd bbrnkrn1/p1pppp2/1p6/6pp/3q4/1P3QP1/P1PPPP1P/BBRNKRN1 w FCfc -
 perft 1 34
 perft 2 1398
 perft 3 45749
@@ -5906,7 +5906,7 @@ perft 5 57268492
 perft 6 2059942014
 
 id 656
-epd br1bkrnq/1p2pppp/pnp5/3p4/P1P5/5P2/1P1PPKPP/BRNB1RNQ w fb - 2 9
+epd br1bkrnq/1p2pppp/pnp5/3p4/P1P5/5P2/1P1PPKPP/BRNB1RNQ w fb -
 perft 1 24
 perft 2 501
 perft 3 12237
@@ -5915,7 +5915,7 @@ perft 5 7049659
 perft 6 177940764
 
 id 657
-epd brnkrbn1/pppppp1q/B6p/6p1/8/1P2PP2/P1PP2PP/BRNKR1NQ w EBeb - 0 9
+epd brnkrbn1/pppppp1q/B6p/6p1/8/1P2PP2/P1PP2PP/BRNKR1NQ w EBeb -
 perft 1 34
 perft 2 815
 perft 3 25868
@@ -5924,7 +5924,7 @@ perft 5 22006883
 perft 6 639803952
 
 id 658
-epd br1krnqb/pppppp1p/1n4p1/8/8/P2NN3/2PPPPPP/BR1K1RQB w Beb - 2 9
+epd br1krnqb/pppppp1p/1n4p1/8/8/P2NN3/2PPPPPP/BR1K1RQB w Beb -
 perft 1 37
 perft 2 1029
 perft 3 36748
@@ -5933,7 +5933,7 @@ perft 5 36214583
 perft 6 1026195877
 
 id 659
-epd rbbnkr1q/p1p2ppp/1p1ppn2/8/1PP4P/8/P2PPPP1/RBBNKRNQ w FAfa - 0 9
+epd rbbnkr1q/p1p2ppp/1p1ppn2/8/1PP4P/8/P2PPPP1/RBBNKRNQ w FAfa -
 perft 1 28
 perft 2 755
 perft 3 22623
@@ -5942,7 +5942,7 @@ perft 5 18972778
 perft 6 513486101
 
 id 660
-epd r1b1krnq/pp2pppp/1bn5/2pp4/4N3/5P2/PPPPPRPP/R1BBK1NQ w Afa - 0 9
+epd r1b1krnq/pp2pppp/1bn5/2pp4/4N3/5P2/PPPPPRPP/R1BBK1NQ w Afa -
 perft 1 24
 perft 2 705
 perft 3 17427
@@ -5951,7 +5951,7 @@ perft 5 13532966
 perft 6 426443376
 
 id 661
-epd 1nbkrbn1/rpppppqp/p7/6p1/4P3/3P2P1/PPP1KP1P/RNB1RBNQ w e - 1 9
+epd 1nbkrbn1/rpppppqp/p7/6p1/4P3/3P2P1/PPP1KP1P/RNB1RBNQ w e -
 perft 1 31
 perft 2 800
 perft 3 24748
@@ -5960,7 +5960,7 @@ perft 5 21193292
 perft 6 625757852
 
 id 662
-epd r1bkrnqb/pp3ppp/n1ppp3/8/1P5P/P7/R1PPPPP1/1NBKRNQB w Eea - 0 9
+epd r1bkrnqb/pp3ppp/n1ppp3/8/1P5P/P7/R1PPPPP1/1NBKRNQB w Eea -
 perft 1 21
 perft 2 482
 perft 3 11417
@@ -5969,7 +5969,7 @@ perft 5 7112890
 perft 6 180378139
 
 id 663
-epd rbnkbrnq/ppp1p2p/5p2/3p2p1/1B1P4/1N4P1/PPP1PP1P/RB1K1RNQ w FAfa - 0 9
+epd rbnkbrnq/ppp1p2p/5p2/3p2p1/1B1P4/1N4P1/PPP1PP1P/RB1K1RNQ w FAfa -
 perft 1 33
 perft 2 780
 perft 3 25532
@@ -5978,7 +5978,7 @@ perft 5 20756770
 perft 6 535497008
 
 id 664
-epd rnk1brnq/pp1ppppp/2p5/b7/8/1P2P2P/P1PP1PPQ/RNKBBRN1 w FAfa - 3 9
+epd rnk1brnq/pp1ppppp/2p5/b7/8/1P2P2P/P1PP1PPQ/RNKBBRN1 w FAfa -
 perft 1 29
 perft 2 648
 perft 3 19043
@@ -5987,7 +5987,7 @@ perft 5 13722785
 perft 6 341389148
 
 id 665
-epd rnkrbbnq/p1p3pp/5p2/1p1pp3/P7/1PN2P2/2PPP1PP/R1KRBBNQ w DAda - 0 9
+epd rnkrbbnq/p1p3pp/5p2/1p1pp3/P7/1PN2P2/2PPP1PP/R1KRBBNQ w DAda -
 perft 1 26
 perft 2 827
 perft 3 21865
@@ -5996,7 +5996,7 @@ perft 5 18916370
 perft 6 589161126
 
 id 666
-epd r1krbnqb/p1pp1ppp/2n1p3/8/1p4P1/PPP5/3PPP1P/RNKRBNQB w DAda - 1 9
+epd r1krbnqb/p1pp1ppp/2n1p3/8/1p4P1/PPP5/3PPP1P/RNKRBNQB w DAda -
 perft 1 25
 perft 2 540
 perft 3 14709
@@ -6005,7 +6005,7 @@ perft 5 9491817
 perft 6 225389422
 
 id 667
-epd rbnkrnbq/ppp1pp2/3p2p1/2N5/P6p/2P5/1P1PPPPP/RB1KRNBQ w EAea - 0 9
+epd rbnkrnbq/ppp1pp2/3p2p1/2N5/P6p/2P5/1P1PPPPP/RB1KRNBQ w EAea -
 perft 1 32
 perft 2 790
 perft 3 25107
@@ -6014,7 +6014,7 @@ perft 5 20906017
 perft 6 578332225
 
 id 668
-epd rnkbrn1q/1ppppppb/8/p4N1p/8/P1N5/1PPPPPPP/R1KBR1BQ w EAea - 0 9
+epd rnkbrn1q/1ppppppb/8/p4N1p/8/P1N5/1PPPPPPP/R1KBR1BQ w EAea -
 perft 1 31
 perft 2 691
 perft 3 20813
@@ -6023,7 +6023,7 @@ perft 5 15308408
 perft 6 404129987
 
 id 669
-epd rnkrnbbq/p1p2ppp/3pp3/1p6/6P1/4PQ1B/PPPP1P1P/RNKRN1B1 w DAda - 0 9
+epd rnkrnbbq/p1p2ppp/3pp3/1p6/6P1/4PQ1B/PPPP1P1P/RNKRN1B1 w DAda -
 perft 1 29
 perft 2 558
 perft 3 16800
@@ -6032,7 +6032,7 @@ perft 5 10825379
 perft 6 246965507
 
 id 670
-epd rnkrnqbb/pp2p1p1/3p3p/2p2p2/5P2/1P1N4/P1PPPQPP/RNKR2BB w DAda - 0 9
+epd rnkrnqbb/pp2p1p1/3p3p/2p2p2/5P2/1P1N4/P1PPPQPP/RNKR2BB w DAda -
 perft 1 29
 perft 2 762
 perft 3 23210
@@ -6041,7 +6041,7 @@ perft 5 20522675
 perft 6 596067005
 
 id 671
-epd bb1rknnr/ppqppppp/8/2p5/3P1N2/1P6/P1P1PPPP/BBQRKN1R w HDhd - 1 9
+epd bb1rknnr/ppqppppp/8/2p5/3P1N2/1P6/P1P1PPPP/BBQRKN1R w HDhd -
 perft 1 33
 perft 2 963
 perft 3 32279
@@ -6050,7 +6050,7 @@ perft 5 34552118
 perft 6 1124738493
 
 id 672
-epd bqrbknnr/ppp1p2p/8/3p1p2/5p2/P3N2P/1PPPP1P1/BQRBK1NR w HChc - 0 9
+epd bqrbknnr/ppp1p2p/8/3p1p2/5p2/P3N2P/1PPPP1P1/BQRBK1NR w HChc -
 perft 1 20
 perft 2 398
 perft 3 9009
@@ -6059,7 +6059,7 @@ perft 5 4834319
 perft 6 113660536
 
 id 673
-epd b1rk1bnr/qpp1pppp/p4n2/3p4/3PPP2/7N/PPP3PP/BQRKNB1R w HChc - 1 9
+epd b1rk1bnr/qpp1pppp/p4n2/3p4/3PPP2/7N/PPP3PP/BQRKNB1R w HChc -
 perft 1 25
 perft 2 648
 perft 3 16587
@@ -6068,7 +6068,7 @@ perft 5 12200870
 perft 6 351766307
 
 id 674
-epd bqkrnnrb/pppp2p1/4pp2/4P2p/6P1/7P/PPPP1P2/BQRKNNRB w GC - 1 9
+epd bqkrnnrb/pppp2p1/4pp2/4P2p/6P1/7P/PPPP1P2/BQRKNNRB w GC -
 perft 1 30
 perft 2 493
 perft 3 15118
@@ -6077,7 +6077,7 @@ perft 5 8786998
 perft 6 181492621
 
 id 675
-epd q1brknnr/1p1ppppp/p7/2p5/8/1PPP4/P2RPPPP/QBB1KNNR w Hhd - 0 9
+epd q1brknnr/1p1ppppp/p7/2p5/8/1PPP4/P2RPPPP/QBB1KNNR w Hhd -
 perft 1 25
 perft 2 501
 perft 3 13206
@@ -6086,7 +6086,7 @@ perft 5 7982978
 perft 6 192717198
 
 id 676
-epd qrb1k1nr/ppppb1pp/6n1/4ppN1/3P4/4N3/PPP1PPPP/QRBBK2R w HBhb - 2 9
+epd qrb1k1nr/ppppb1pp/6n1/4ppN1/3P4/4N3/PPP1PPPP/QRBBK2R w HBhb -
 perft 1 31
 perft 2 872
 perft 3 26191
@@ -6095,7 +6095,7 @@ perft 5 22493014
 perft 6 646855304
 
 id 677
-epd 1rbknbnr/1ppp1pp1/q6p/p3p3/5P2/2PPB3/PP2P1PP/QR1KNBNR w HBhb - 0 9
+epd 1rbknbnr/1ppp1pp1/q6p/p3p3/5P2/2PPB3/PP2P1PP/QR1KNBNR w HBhb -
 perft 1 28
 perft 2 1020
 perft 3 28147
@@ -6104,7 +6104,7 @@ perft 5 27484692
 perft 6 947786800
 
 id 678
-epd qrbk2rb/1ppp1ppp/5nn1/p3p3/1N6/P7/1PPPPPPP/QRB1KNRB w gb - 0 9
+epd qrbk2rb/1ppp1ppp/5nn1/p3p3/1N6/P7/1PPPPPPP/QRB1KNRB w gb -
 perft 1 23
 perft 2 592
 perft 3 14398
@@ -6113,7 +6113,7 @@ perft 5 10098215
 perft 6 293988585
 
 id 679
-epd qbrk1nnr/1pp1pppp/2b5/p2p4/P2P2P1/8/1PP1PP1P/QBKRBNNR w hc - 1 9
+epd qbrk1nnr/1pp1pppp/2b5/p2p4/P2P2P1/8/1PP1PP1P/QBKRBNNR w hc -
 perft 1 26
 perft 2 654
 perft 3 18103
@@ -6122,7 +6122,7 @@ perft 5 13740891
 perft 6 373081138
 
 id 680
-epd qrkbbnnr/ppp2p1p/4p3/3p2p1/P7/2PP4/1P2PPPP/QRKBBNNR w HBhb - 0 9
+epd qrkbbnnr/ppp2p1p/4p3/3p2p1/P7/2PP4/1P2PPPP/QRKBBNNR w HBhb -
 perft 1 25
 perft 2 626
 perft 3 16616
@@ -6131,7 +6131,7 @@ perft 5 12079406
 perft 6 324006164
 
 id 681
-epd qr1kbbnr/ppp1pp1p/4n1p1/2Pp4/6P1/4N3/PP1PPP1P/QRK1BBNR w HB d6 0 9
+epd qr1kbbnr/ppp1pp1p/4n1p1/2Pp4/6P1/4N3/PP1PPP1P/QRK1BBNR w HB d6
 perft 1 26
 perft 2 699
 perft 3 18068
@@ -6140,7 +6140,7 @@ perft 5 13353359
 perft 6 375702908
 
 id 682
-epd qrk1b1rb/p1pppppp/3nnQ2/1p6/1P3P2/3P4/P1P1P1PP/1RKNBNRB w GBgb - 3 9
+epd qrk1b1rb/p1pppppp/3nnQ2/1p6/1P3P2/3P4/P1P1P1PP/1RKNBNRB w GBgb -
 perft 1 43
 perft 2 1369
 perft 3 55463
@@ -6149,7 +6149,7 @@ perft 5 71514365
 perft 6 2427477375
 
 id 683
-epd qbrk1nbr/pppp3p/5n2/4ppp1/3P1P2/4N3/PPP1P1PP/QBKRN1BR w hc - 0 9
+epd qbrk1nbr/pppp3p/5n2/4ppp1/3P1P2/4N3/PPP1P1PP/QBKRN1BR w hc -
 perft 1 25
 perft 2 752
 perft 3 20165
@@ -6158,7 +6158,7 @@ perft 5 17493373
 perft 6 543180234
 
 id 684
-epd qrkb1nbr/1pppppQp/3n4/p7/5p2/1P1N4/P1PPP1PP/1RKB1NBR w HBhb - 0 9
+epd qrkb1nbr/1pppppQp/3n4/p7/5p2/1P1N4/P1PPP1PP/1RKB1NBR w HBhb -
 perft 1 45
 perft 2 946
 perft 3 40100
@@ -6167,7 +6167,7 @@ perft 5 39736157
 perft 6 1051910977
 
 id 685
-epd qrk1nbbr/ppp1p1p1/4n2p/3p1p2/1P5P/3P2P1/P1P1PP2/QRKNNBBR w HBhb - 1 9
+epd qrk1nbbr/ppp1p1p1/4n2p/3p1p2/1P5P/3P2P1/P1P1PP2/QRKNNBBR w HBhb -
 perft 1 32
 perft 2 770
 perft 3 25367
@@ -6176,7 +6176,7 @@ perft 5 21717615
 perft 6 577979364
 
 id 686
-epd qrkn1rbb/pp2pppp/2p5/3p4/P2Qn1P1/1P6/2PPPP1P/1RKNNRBB w FBfb - 0 9
+epd qrkn1rbb/pp2pppp/2p5/3p4/P2Qn1P1/1P6/2PPPP1P/1RKNNRBB w FBfb -
 perft 1 38
 perft 2 943
 perft 3 35335
@@ -6185,7 +6185,7 @@ perft 5 31909835
 perft 6 798405123
 
 id 687
-epd bbrqknnr/ppp4p/3pp3/5pp1/4PP2/5Q2/PPPP2PP/BBR1KNNR w HChc - 0 9
+epd bbrqknnr/ppp4p/3pp3/5pp1/4PP2/5Q2/PPPP2PP/BBR1KNNR w HChc -
 perft 1 36
 perft 2 843
 perft 3 29974
@@ -6194,7 +6194,7 @@ perft 5 26828059
 perft 6 723306114
 
 id 688
-epd 1rqbkn1r/p1p1pppp/1p5n/P2p4/3Pb1P1/8/1PP1PP1P/BRQBKNNR w HBhb - 0 9
+epd 1rqbkn1r/p1p1pppp/1p5n/P2p4/3Pb1P1/8/1PP1PP1P/BRQBKNNR w HBhb -
 perft 1 23
 perft 2 778
 perft 3 19482
@@ -6203,7 +6203,7 @@ perft 5 17337683
 perft 6 579112676
 
 id 689
-epd br1knbnr/1qp1pppp/pp1p4/8/8/PP6/2PPPPPP/BRQKNBNR w HBhb - 2 9
+epd br1knbnr/1qp1pppp/pp1p4/8/8/PP6/2PPPPPP/BRQKNBNR w HBhb -
 perft 1 26
 perft 2 697
 perft 3 18835
@@ -6212,7 +6212,7 @@ perft 5 15280079
 perft 6 473071890
 
 id 690
-epd brqk2rb/ppppp1pp/4np2/8/2n5/3P1Q2/PP2PPPP/BR1KNNRB w GBgb - 0 9
+epd brqk2rb/ppppp1pp/4np2/8/2n5/3P1Q2/PP2PPPP/BR1KNNRB w GBgb -
 perft 1 32
 perft 2 948
 perft 3 30434
@@ -6221,7 +6221,7 @@ perft 5 29821322
 perft 6 874251866
 
 id 691
-epd r1bqknnr/pp1pp1p1/5p1p/2p1b2N/2P5/8/PPQPPPPP/RBB1K1NR w HAha - 0 9
+epd r1bqknnr/pp1pp1p1/5p1p/2p1b2N/2P5/8/PPQPPPPP/RBB1K1NR w HAha -
 perft 1 31
 perft 2 785
 perft 3 25549
@@ -6230,7 +6230,7 @@ perft 5 22244193
 perft 6 592797491
 
 id 692
-epd rqbbknnr/ppppp2p/5pp1/8/8/1P3PP1/PQPPP2P/R1BBKNNR w HAha - 0 9
+epd rqbbknnr/ppppp2p/5pp1/8/8/1P3PP1/PQPPP2P/R1BBKNNR w HAha -
 perft 1 23
 perft 2 391
 perft 3 10163
@@ -6239,7 +6239,7 @@ perft 5 5576671
 perft 6 121267576
 
 id 693
-epd rqbknbnr/1pp1p2p/p7/3p1pp1/7N/1PP5/P2PPPPP/RQBK1BNR w HAha - 0 9
+epd rqbknbnr/1pp1p2p/p7/3p1pp1/7N/1PP5/P2PPPPP/RQBK1BNR w HAha -
 perft 1 27
 perft 2 676
 perft 3 19606
@@ -6248,7 +6248,7 @@ perft 5 15955388
 perft 6 448477218
 
 id 694
-epd rqb1nnrb/2ppkppp/1p2p3/p7/2PPP3/1P6/P4PPP/RQBKNNRB w GA - 1 9
+epd rqb1nnrb/2ppkppp/1p2p3/p7/2PPP3/1P6/P4PPP/RQBKNNRB w GA -
 perft 1 31
 perft 2 727
 perft 3 22895
@@ -6257,7 +6257,7 @@ perft 5 18361051
 perft 6 483248153
 
 id 695
-epd rb1kbn1r/p1ppppp1/qp5n/7p/P7/RPP5/3PPPPP/1BQKBNNR w Hha - 2 9
+epd rb1kbn1r/p1ppppp1/qp5n/7p/P7/RPP5/3PPPPP/1BQKBNNR w Hha -
 perft 1 29
 perft 2 837
 perft 3 23815
@@ -6266,7 +6266,7 @@ perft 5 21279560
 perft 6 682863811
 
 id 696
-epd rqkbb1nr/p1p2ppp/1p1p2n1/3Np3/4P3/5N2/PPPP1PPP/RQKBB2R w HAha - 0 9
+epd rqkbb1nr/p1p2ppp/1p1p2n1/3Np3/4P3/5N2/PPPP1PPP/RQKBB2R w HAha -
 perft 1 28
 perft 2 717
 perft 3 20663
@@ -6275,7 +6275,7 @@ perft 5 16347343
 perft 6 453153783
 
 id 697
-epd rqknbbr1/p1pppp1p/1p3np1/8/4P3/2P2P1P/PP1P2P1/RQKNBBNR w HAa - 0 9
+epd rqknbbr1/p1pppp1p/1p3np1/8/4P3/2P2P1P/PP1P2P1/RQKNBBNR w HAa -
 perft 1 27
 perft 2 650
 perft 3 18231
@@ -6284,7 +6284,7 @@ perft 5 13847463
 perft 6 383256006
 
 id 698
-epd r1k1bnrb/1qpppppp/1p2n3/p7/1P5P/6P1/P1PPPP2/RQKNBNR1 w GAga - 1 9
+epd r1k1bnrb/1qpppppp/1p2n3/p7/1P5P/6P1/P1PPPP2/RQKNBNR1 w GAga -
 perft 1 24
 perft 2 806
 perft 3 20693
@@ -6293,7 +6293,7 @@ perft 5 19382263
 perft 6 686009788
 
 id 699
-epd rb1knnbr/1pp1ppp1/p2p3p/5q2/3B2P1/3P1P2/PPP1P2P/RBQKNN1R w HAha - 0 9
+epd rb1knnbr/1pp1ppp1/p2p3p/5q2/3B2P1/3P1P2/PPP1P2P/RBQKNN1R w HAha -
 perft 1 34
 perft 2 1360
 perft 3 44096
@@ -6302,7 +6302,7 @@ perft 5 51973672
 perft 6 1837704407
 
 id 700
-epd rqkb1nbr/p1p1ppp1/1p3n1p/2Qp4/8/2P5/PP1PPPPP/R1KBNNBR w HAha - 2 9
+epd rqkb1nbr/p1p1ppp1/1p3n1p/2Qp4/8/2P5/PP1PPPPP/R1KBNNBR w HAha -
 perft 1 39
 perft 2 983
 perft 3 38218
@@ -6311,7 +6311,7 @@ perft 5 36347815
 perft 6 918801645
 
 id 701
-epd rqknnbbr/2pppp2/pp5p/6p1/1P1P4/4PP2/P1P3PP/RQKNNBBR w HAha - 0 9
+epd rqknnbbr/2pppp2/pp5p/6p1/1P1P4/4PP2/P1P3PP/RQKNNBBR w HAha -
 perft 1 26
 perft 2 628
 perft 3 17638
@@ -6320,7 +6320,7 @@ perft 5 13787303
 perft 6 386125234
 
 id 702
-epd rqkn1rbb/1pp1pppp/p7/3p4/3Pn3/2P1PP2/PP4PP/RQKNNRBB w FAfa - 1 9
+epd rqkn1rbb/1pp1pppp/p7/3p4/3Pn3/2P1PP2/PP4PP/RQKNNRBB w FAfa -
 perft 1 20
 perft 2 527
 perft 3 12216
@@ -6329,7 +6329,7 @@ perft 5 8082183
 perft 6 219311659
 
 id 703
-epd bbrkqn1r/1pppppp1/5n2/p7/1PP2P1p/7N/P2PP1PP/BBRKQN1R w HChc - 1 9
+epd bbrkqn1r/1pppppp1/5n2/p7/1PP2P1p/7N/P2PP1PP/BBRKQN1R w HChc -
 perft 1 36
 perft 2 963
 perft 3 35291
@@ -6338,7 +6338,7 @@ perft 5 35907489
 perft 6 1034223364
 
 id 704
-epd brkbqn1r/p2ppppp/7n/1p6/P1p3PP/8/1PPPPP1N/BRKBQ1NR w HBhb - 0 9
+epd brkbqn1r/p2ppppp/7n/1p6/P1p3PP/8/1PPPPP1N/BRKBQ1NR w HBhb -
 perft 1 18
 perft 2 583
 perft 3 11790
@@ -6347,7 +6347,7 @@ perft 5 8858385
 perft 6 304339862
 
 id 705
-epd brkq1bnr/pp1ppp1p/8/2p2np1/P7/8/1PPPPPPP/BRKQNBNR w HBhb - 0 9
+epd brkq1bnr/pp1ppp1p/8/2p2np1/P7/8/1PPPPPPP/BRKQNBNR w HBhb -
 perft 1 19
 perft 2 552
 perft 3 11811
@@ -6356,7 +6356,7 @@ perft 5 8432183
 perft 6 262293169
 
 id 706
-epd brkqnnrb/1ppppppp/8/8/p3P3/5N2/PPPP1PPP/BRKQ1NRB w GBgb - 3 9
+epd brkqnnrb/1ppppppp/8/8/p3P3/5N2/PPPP1PPP/BRKQ1NRB w GBgb -
 perft 1 21
 perft 2 397
 perft 3 9653
@@ -6365,7 +6365,7 @@ perft 5 5489836
 perft 6 128389738
 
 id 707
-epd rbbkq1nr/1p2pppp/p1p3nB/3p4/1Q1P4/6N1/PPP1PPPP/RB1K2NR w HAha - 0 9
+epd rbbkq1nr/1p2pppp/p1p3nB/3p4/1Q1P4/6N1/PPP1PPPP/RB1K2NR w HAha -
 perft 1 40
 perft 2 1132
 perft 3 43404
@@ -6374,7 +6374,7 @@ perft 5 47425783
 perft 6 1415578783
 
 id 708
-epd rkbbq1nr/1pppp1p1/4np2/p6p/8/PP3P2/1KPPP1PP/R1BBQNNR w ha - 0 9
+epd rkbbq1nr/1pppp1p1/4np2/p6p/8/PP3P2/1KPPP1PP/R1BBQNNR w ha -
 perft 1 24
 perft 2 596
 perft 3 15220
@@ -6383,7 +6383,7 @@ perft 5 10822049
 perft 6 302056813
 
 id 709
-epd r1bqn1nr/pkpppp1p/1p4pb/8/PN6/R7/1PPPPPPP/1KBQ1BNR w H - 2 9
+epd r1bqn1nr/pkpppp1p/1p4pb/8/PN6/R7/1PPPPPPP/1KBQ1BNR w H -
 perft 1 33
 perft 2 794
 perft 3 25450
@@ -6392,7 +6392,7 @@ perft 5 20919309
 perft 6 561073410
 
 id 710
-epd rkb1nnrb/1pppq1pp/p4p2/4p3/5P2/1P1PB3/P1P1P1PP/RK1QNNRB w GAga - 0 9
+epd rkb1nnrb/1pppq1pp/p4p2/4p3/5P2/1P1PB3/P1P1P1PP/RK1QNNRB w GAga -
 perft 1 26
 perft 2 625
 perft 3 17050
@@ -6401,7 +6401,7 @@ perft 5 12515042
 perft 6 342967558
 
 id 711
-epd rbkqbn1r/pppp1p1p/2n1p1p1/8/8/1P1PP1N1/P1P2PPP/RBKQB1NR w HAha - 1 9
+epd rbkqbn1r/pppp1p1p/2n1p1p1/8/8/1P1PP1N1/P1P2PPP/RBKQB1NR w HAha -
 perft 1 30
 perft 2 660
 perft 3 20308
@@ -6410,7 +6410,7 @@ perft 5 15348335
 perft 6 403323883
 
 id 712
-epd rkqbb1n1/pppppppr/8/6np/5P2/8/PPPPP1PP/RKQBBNNR w HAa - 6 9
+epd rkqbb1n1/pppppppr/8/6np/5P2/8/PPPPP1PP/RKQBBNNR w HAa -
 perft 1 23
 perft 2 500
 perft 3 12154
@@ -6419,7 +6419,7 @@ perft 5 7519117
 perft 6 196524441
 
 id 713
-epd rkqnbbnr/ppppppp1/8/7p/3N4/6PP/PPPPPP2/RKQNBB1R w HAa - 0 9
+epd rkqnbbnr/ppppppp1/8/7p/3N4/6PP/PPPPPP2/RKQNBB1R w HAa -
 perft 1 24
 perft 2 484
 perft 3 12495
@@ -6428,7 +6428,7 @@ perft 5 7775173
 perft 6 193947530
 
 id 714
-epd rkqnb1rb/p1p1pppp/1p1p4/2n5/3P4/2P1N1N1/PP2PPPP/RKQ1B1RB w GAga - 0 9
+epd rkqnb1rb/p1p1pppp/1p1p4/2n5/3P4/2P1N1N1/PP2PPPP/RKQ1B1RB w GAga -
 perft 1 28
 perft 2 1020
 perft 3 29124
@@ -6437,7 +6437,7 @@ perft 5 30515456
 perft 6 1073711823
 
 id 715
-epd rbk1nnbr/1ppq1ppp/p2p4/4p3/P3B2P/2P5/1P1PPPP1/R1KQNNBR w HAha - 2 9
+epd rbk1nnbr/1ppq1ppp/p2p4/4p3/P3B2P/2P5/1P1PPPP1/R1KQNNBR w HAha -
 perft 1 38
 perft 2 998
 perft 3 37265
@@ -6446,7 +6446,7 @@ perft 5 38552638
 perft 6 1139322479
 
 id 716
-epd r1qbn1br/k1pppppp/6n1/pp6/5P1P/P7/1PPPP1PB/RKQBNN1R w HA - 1 9
+epd r1qbn1br/k1pppppp/6n1/pp6/5P1P/P7/1PPPP1PB/RKQBNN1R w HA -
 perft 1 22
 perft 2 549
 perft 3 12867
@@ -6455,7 +6455,7 @@ perft 5 8725809
 perft 6 251613569
 
 id 717
-epd rkqnn1br/pppp3p/4p1pb/5p2/P2P4/7P/1PP1PPPB/RKQNNB1R w HAha - 1 9
+epd rkqnn1br/pppp3p/4p1pb/5p2/P2P4/7P/1PP1PPPB/RKQNNB1R w HAha -
 perft 1 32
 perft 2 659
 perft 3 21249
@@ -6464,7 +6464,7 @@ perft 5 15434721
 perft 6 365761521
 
 id 718
-epd rk1nnrbb/p1p1pppp/1p6/3p1q2/P3P3/2NN4/1PPP1PPP/RKQ2RBB w FAfa - 3 9
+epd rk1nnrbb/p1p1pppp/1p6/3p1q2/P3P3/2NN4/1PPP1PPP/RKQ2RBB w FAfa -
 perft 1 29
 perft 2 989
 perft 3 29087
@@ -6473,7 +6473,7 @@ perft 5 29643404
 perft 6 998848556
 
 id 719
-epd bbrk1q1r/ppppppp1/3n4/7p/3Pn3/6PN/PPP1PPNP/BBRK1Q1R w HChc - 2 9
+epd bbrk1q1r/ppppppp1/3n4/7p/3Pn3/6PN/PPP1PPNP/BBRK1Q1R w HChc -
 perft 1 23
 perft 2 712
 perft 3 16551
@@ -6482,7 +6482,7 @@ perft 5 12995202
 perft 6 411077508
 
 id 720
-epd brkbnq1r/p1ppp2p/5ppn/1p6/5P2/1P1P2P1/P1P1P2P/BRKBNQNR w HBhb - 0 9
+epd brkbnq1r/p1ppp2p/5ppn/1p6/5P2/1P1P2P1/P1P1P2P/BRKBNQNR w HBhb -
 perft 1 28
 perft 2 856
 perft 3 24984
@@ -6491,7 +6491,7 @@ perft 5 23529352
 perft 6 754501112
 
 id 721
-epd br1k1bnr/ppppp1pp/4np2/1B2P2q/3P4/8/PPP2PPP/BRKNQ1NR w HB - 3 9
+epd br1k1bnr/ppppp1pp/4np2/1B2P2q/3P4/8/PPP2PPP/BRKNQ1NR w HB -
 perft 1 36
 perft 2 1214
 perft 3 40615
@@ -6500,7 +6500,7 @@ perft 5 45096834
 perft 6 1470987023
 
 id 722
-epd brk1qnrb/pnppp1p1/1p6/5p1p/8/5PPP/PPPPP1R1/BRKNQN1B w Bgb - 0 9
+epd brk1qnrb/pnppp1p1/1p6/5p1p/8/5PPP/PPPPP1R1/BRKNQN1B w Bgb -
 perft 1 22
 perft 2 551
 perft 3 13111
@@ -6509,7 +6509,7 @@ perft 5 9040545
 perft 6 259643605
 
 id 723
-epd rbbkn1nr/1ppp2pp/p3p3/2q2p2/3P4/6P1/PPPBPP1P/RB1KNQNR w HAha - 0 9
+epd rbbkn1nr/1ppp2pp/p3p3/2q2p2/3P4/6P1/PPPBPP1P/RB1KNQNR w HAha -
 perft 1 31
 perft 2 1060
 perft 3 31332
@@ -6518,7 +6518,7 @@ perft 5 30314172
 perft 6 976268967
 
 id 724
-epd rkbbn1nr/ppppp1pp/8/6N1/5p2/1q6/P1PPPPPP/RKBBN1QR w HAha - 0 9
+epd rkbbn1nr/ppppp1pp/8/6N1/5p2/1q6/P1PPPPPP/RKBBN1QR w HAha -
 perft 1 3
 perft 2 72
 perft 3 1919
@@ -6527,7 +6527,7 @@ perft 5 1400832
 perft 6 39654253
 
 id 725
-epd rkb2bnr/pp2pppp/2p1n3/3p4/q2P4/5NP1/PPP1PP1P/RKBNQBR1 w Aha - 0 9
+epd rkb2bnr/pp2pppp/2p1n3/3p4/q2P4/5NP1/PPP1PP1P/RKBNQBR1 w Aha -
 perft 1 29
 perft 2 861
 perft 3 24504
@@ -6536,7 +6536,7 @@ perft 5 22763215
 perft 6 731511256
 
 id 726
-epd rkbq1nrb/ppppppp1/7p/8/1P1n4/P4P1P/2PPP1P1/RKBNQNRB w GAga - 0 9
+epd rkbq1nrb/ppppppp1/7p/8/1P1n4/P4P1P/2PPP1P1/RKBNQNRB w GAga -
 perft 1 25
 perft 2 672
 perft 3 17631
@@ -6545,7 +6545,7 @@ perft 5 12954224
 perft 6 361237536
 
 id 727
-epd rbknb1nr/ppp1qp1p/6p1/3pp3/3P3P/2B1P3/PPP2PP1/RBKN1QNR w HAha - 1 9
+epd rbknb1nr/ppp1qp1p/6p1/3pp3/3P3P/2B1P3/PPP2PP1/RBKN1QNR w HAha -
 perft 1 27
 perft 2 857
 perft 3 24688
@@ -6554,7 +6554,7 @@ perft 5 23790033
 perft 6 768247869
 
 id 728
-epd rknbbq1r/p1pppppp/1p2N3/8/3n4/2P5/PP1PPPPP/RK1BBQNR w HAha - 4 9
+epd rknbbq1r/p1pppppp/1p2N3/8/3n4/2P5/PP1PPPPP/RK1BBQNR w HAha -
 perft 1 29
 perft 2 763
 perft 3 22138
@@ -6563,7 +6563,7 @@ perft 5 16926075
 perft 6 447896703
 
 id 729
-epd r1nqbbnr/1pppp1pp/1k6/p4p2/8/4P3/PPPP1PPP/RKN1BBNR w HA - 0 9
+epd r1nqbbnr/1pppp1pp/1k6/p4p2/8/4P3/PPPP1PPP/RKN1BBNR w HA -
 perft 1 26
 perft 2 658
 perft 3 17302
@@ -6572,7 +6572,7 @@ perft 5 12380488
 perft 6 349047256
 
 id 730
-epd rkn2qrb/ppp1pppp/6n1/1b1p4/1P6/4PPB1/P1PP2PP/RKNQ1NRB w GAga - 3 9
+epd rkn2qrb/ppp1pppp/6n1/1b1p4/1P6/4PPB1/P1PP2PP/RKNQ1NRB w GAga -
 perft 1 23
 perft 2 574
 perft 3 14070
@@ -6581,7 +6581,7 @@ perft 5 9501401
 perft 6 263870337
 
 id 731
-epd rbkn2br/ppppp1p1/4np1p/1P5q/8/2P1N3/P2PPPPP/RBK1QNBR w HAha - 1 9
+epd rbkn2br/ppppp1p1/4np1p/1P5q/8/2P1N3/P2PPPPP/RBK1QNBR w HAha -
 perft 1 29
 perft 2 992
 perft 3 29506
@@ -6590,7 +6590,7 @@ perft 5 30148787
 perft 6 1045942540
 
 id 732
-epd 1knbqnbr/1ppppp1p/r5p1/p7/7P/2PN2P1/PP1PPP2/RK1BQNBR w HAh - 2 9
+epd 1knbqnbr/1ppppp1p/r5p1/p7/7P/2PN2P1/PP1PPP2/RK1BQNBR w HAh -
 perft 1 26
 perft 2 698
 perft 3 19395
@@ -6599,7 +6599,7 @@ perft 5 14848229
 perft 6 402599313
 
 id 733
-epd rk1qnbbr/pnpppp1p/6p1/1p6/3P4/1P6/P1P1PPPP/RKNQNBBR w HAha - 1 9
+epd rk1qnbbr/pnpppp1p/6p1/1p6/3P4/1P6/P1P1PPPP/RKNQNBBR w HAha -
 perft 1 20
 perft 2 480
 perft 3 11159
@@ -6608,7 +6608,7 @@ perft 5 7425917
 perft 6 203194521
 
 id 734
-epd rknqnrbb/pp1p2p1/5p1p/2p1p3/2P1P3/P2P4/1P3PPP/RKNQNRBB w FAfa - 0 9
+epd rknqnrbb/pp1p2p1/5p1p/2p1p3/2P1P3/P2P4/1P3PPP/RKNQNRBB w FAfa -
 perft 1 26
 perft 2 679
 perft 3 18116
@@ -6617,7 +6617,7 @@ perft 5 13790137
 perft 6 392629571
 
 id 735
-epd bbrk2qr/pp1p1ppp/3n2n1/2p1p3/3P1P2/6N1/PPP1P1PP/BBRKN1QR w HChc - 0 9
+epd bbrk2qr/pp1p1ppp/3n2n1/2p1p3/3P1P2/6N1/PPP1P1PP/BBRKN1QR w HChc -
 perft 1 26
 perft 2 790
 perft 3 21521
@@ -6626,7 +6626,7 @@ perft 5 19259490
 perft 6 617563700
 
 id 736
-epd b1krnnqr/1p1ppppp/p1p5/b6B/P7/4P1N1/1PPP1PPP/BRK1N1QR w HB - 2 9
+epd b1krnnqr/1p1ppppp/p1p5/b6B/P7/4P1N1/1PPP1PPP/BRK1N1QR w HB -
 perft 1 26
 perft 2 625
 perft 3 16451
@@ -6635,7 +6635,7 @@ perft 5 11490615
 perft 6 304805107
 
 id 737
-epd 1rknnbqr/3ppppp/p7/1pp5/4b2P/P4P2/1PPPP1PR/BRKNNBQ1 w Bhb - 1 9
+epd 1rknnbqr/3ppppp/p7/1pp5/4b2P/P4P2/1PPPP1PR/BRKNNBQ1 w Bhb -
 perft 1 24
 perft 2 757
 perft 3 19746
@@ -6644,7 +6644,7 @@ perft 5 17275100
 perft 6 544309489
 
 id 738
-epd br1nn1rb/pppkpqpp/3p1p2/8/PP6/4N3/1KPPPPPP/BR2NQRB w - - 3 9
+epd br1nn1rb/pppkpqpp/3p1p2/8/PP6/4N3/1KPPPPPP/BR2NQRB w - -
 perft 1 24
 perft 2 682
 perft 3 17129
@@ -6653,7 +6653,7 @@ perft 5 13057308
 perft 6 375033550
 
 id 739
-epd rbbkn1qr/pppp2p1/6np/4pp2/7N/7P/PPPPPPPR/RBBK1NQ1 w Aha - 0 9
+epd rbbkn1qr/pppp2p1/6np/4pp2/7N/7P/PPPPPPPR/RBBK1NQ1 w Aha -
 perft 1 22
 perft 2 586
 perft 3 14158
@@ -6662,7 +6662,7 @@ perft 5 10607781
 perft 6 324452612
 
 id 740
-epd rk1bn1qr/pppbpppp/4n3/4p3/4P3/5P2/PPPP2PP/RKBB1NQR w HAha - 1 9
+epd rk1bn1qr/pppbpppp/4n3/4p3/4P3/5P2/PPPP2PP/RKBB1NQR w HAha -
 perft 1 22
 perft 2 530
 perft 3 13440
@@ -6671,7 +6671,7 @@ perft 5 9514787
 perft 6 259898748
 
 id 741
-epd rkbnnbqr/1ppp1ppp/p7/4p3/8/QP3P2/P1PPP1PP/RKBNNB1R w HAha - 0 9
+epd rkbnnbqr/1ppp1ppp/p7/4p3/8/QP3P2/P1PPP1PP/RKBNNB1R w HAha -
 perft 1 29
 perft 2 705
 perft 3 21511
@@ -6680,7 +6680,7 @@ perft 5 17524731
 perft 6 472356665
 
 id 742
-epd 1kbnnqrb/1pp1p1pp/r4p2/p2p4/N4P2/3P4/PPP1P1PP/RKB1NQRB w GAg - 2 9
+epd 1kbnnqrb/1pp1p1pp/r4p2/p2p4/N4P2/3P4/PPP1P1PP/RKB1NQRB w GAg -
 perft 1 21
 perft 2 623
 perft 3 14979
@@ -6689,7 +6689,7 @@ perft 5 11601134
 perft 6 343214006
 
 id 743
-epd rbknbn1r/pppp1p1p/4p1q1/8/P1P3Pp/8/1P1PPP2/RBKNBNQR w HAha - 0 9
+epd rbknbn1r/pppp1p1p/4p1q1/8/P1P3Pp/8/1P1PPP2/RBKNBNQR w HAha -
 perft 1 30
 perft 2 813
 perft 3 24959
@@ -6698,7 +6698,7 @@ perft 5 23379040
 perft 6 692576573
 
 id 744
-epd rk1bb1qr/2pppppp/p2nn3/1p4P1/6QP/8/PPPPPP2/RKNBBN1R w HAha - 2 9
+epd rk1bb1qr/2pppppp/p2nn3/1p4P1/6QP/8/PPPPPP2/RKNBBN1R w HAha -
 perft 1 36
 perft 2 857
 perft 3 30124
@@ -6707,7 +6707,7 @@ perft 5 26485812
 perft 6 696999449
 
 id 745
-epd rkn1bbqr/p2ppppp/2p1n3/1p6/4PP2/6PP/PPPP4/RKNNBBQR w HAha - 0 9
+epd rkn1bbqr/p2ppppp/2p1n3/1p6/4PP2/6PP/PPPP4/RKNNBBQR w HAha -
 perft 1 33
 perft 2 687
 perft 3 22744
@@ -6716,7 +6716,7 @@ perft 5 17101732
 perft 6 412778368
 
 id 746
-epd rkn1bqrb/pnp1pppp/3p4/8/Pp6/1N2NP2/1PPPP1PP/RK2BQRB w GAga - 0 9
+epd rkn1bqrb/pnp1pppp/3p4/8/Pp6/1N2NP2/1PPPP1PP/RK2BQRB w GAga -
 perft 1 28
 perft 2 591
 perft 3 17174
@@ -6725,7 +6725,7 @@ perft 5 12182448
 perft 6 312575205
 
 id 747
-epd rbk1n1br/ppp1ppqp/2n5/2Np2p1/8/2P5/PPBPPPPP/R1KN1QBR w HAha - 4 9
+epd rbk1n1br/ppp1ppqp/2n5/2Np2p1/8/2P5/PPBPPPPP/R1KN1QBR w HAha -
 perft 1 35
 perft 2 930
 perft 3 30663
@@ -6734,7 +6734,7 @@ perft 5 27160490
 perft 6 780616047
 
 id 748
-epd rknbn1br/1ppp1ppp/p3p3/8/1q6/2P2N1P/P2PPPP1/RKNB1QBR w HAha - 0 9
+epd rknbn1br/1ppp1ppp/p3p3/8/1q6/2P2N1P/P2PPPP1/RKNB1QBR w HAha -
 perft 1 4
 perft 2 157
 perft 3 3697
@@ -6743,7 +6743,7 @@ perft 5 3454704
 perft 6 125373395
 
 id 749
-epd rkn1qbbr/pp3ppp/4n3/2ppp3/4P1P1/P2P4/1PP2P1P/RKNNQBBR w HAha - 0 9
+epd rkn1qbbr/pp3ppp/4n3/2ppp3/4P1P1/P2P4/1PP2P1P/RKNNQBBR w HAha -
 perft 1 28
 perft 2 840
 perft 3 24437
@@ -6752,7 +6752,7 @@ perft 5 23200961
 perft 6 756489357
 
 id 750
-epd rkn1qrbb/pp1ppp2/2p1n1p1/7p/2P2P1P/6P1/PP1PP3/RKNNQRBB w FAfa - 1 9
+epd rkn1qrbb/pp1ppp2/2p1n1p1/7p/2P2P1P/6P1/PP1PP3/RKNNQRBB w FAfa -
 perft 1 32
 perft 2 867
 perft 3 27595
@@ -6761,7 +6761,7 @@ perft 5 24485663
 perft 6 688115847
 
 id 751
-epd b1rknnrq/bpppp1p1/p6p/5p1P/6P1/4N3/PPPPPP2/BBRKN1RQ w GCgc - 1 9
+epd b1rknnrq/bpppp1p1/p6p/5p1P/6P1/4N3/PPPPPP2/BBRKN1RQ w GCgc -
 perft 1 33
 perft 2 851
 perft 3 28888
@@ -6770,7 +6770,7 @@ perft 5 26686205
 perft 6 731944177
 
 id 752
-epd brkb1nr1/pppppp2/3n2pp/3B4/1P6/4P3/PqPP1PPP/BRK1NNRQ w GBgb - 2 9
+epd brkb1nr1/pppppp2/3n2pp/3B4/1P6/4P3/PqPP1PPP/BRK1NNRQ w GBgb -
 perft 1 4
 perft 2 98
 perft 3 2965
@@ -6779,7 +6779,7 @@ perft 5 2352530
 perft 6 64251468
 
 id 753
-epd brk1nbrq/1ppppn1p/6p1/p4p2/P5P1/5R2/1PPPPP1P/BRKNNB1Q w Bgb - 0 9
+epd brk1nbrq/1ppppn1p/6p1/p4p2/P5P1/5R2/1PPPPP1P/BRKNNB1Q w Bgb -
 perft 1 29
 perft 2 922
 perft 3 27709
@@ -6788,7 +6788,7 @@ perft 5 27463717
 perft 6 888881062
 
 id 754
-epd brkn1rqb/1p1ppppp/3n4/p1p5/1P3P2/8/PNPPP1PP/BR1KNRQB w fb - 1 9
+epd brkn1rqb/1p1ppppp/3n4/p1p5/1P3P2/8/PNPPP1PP/BR1KNRQB w fb -
 perft 1 29
 perft 2 633
 perft 3 19399
@@ -6797,7 +6797,7 @@ perft 5 15076198
 perft 6 396737074
 
 id 755
-epd rb1k1nrq/pbp1pppp/1p1p1n2/8/5P2/4NN1P/PPPPP1P1/RBBK2RQ w GAga - 2 9
+epd rb1k1nrq/pbp1pppp/1p1p1n2/8/5P2/4NN1P/PPPPP1P1/RBBK2RQ w GAga -
 perft 1 28
 perft 2 841
 perft 3 24056
@@ -6806,7 +6806,7 @@ perft 5 20772996
 perft 6 613798447
 
 id 756
-epd rkbbnnrq/p1pp3p/4p1p1/1p3p2/P6P/1P6/1BPPPPP1/RK1BNNRQ w GAga - 0 9
+epd rkbbnnrq/p1pp3p/4p1p1/1p3p2/P6P/1P6/1BPPPPP1/RK1BNNRQ w GAga -
 perft 1 33
 perft 2 957
 perft 3 30668
@@ -6815,7 +6815,7 @@ perft 5 29735654
 perft 6 903933626
 
 id 757
-epd rk2nbrq/p1ppppp1/bpn5/7p/6P1/2N2P2/PPPPP1QP/RKB1NBR1 w GAga - 2 9
+epd rk2nbrq/p1ppppp1/bpn5/7p/6P1/2N2P2/PPPPP1QP/RKB1NBR1 w GAga -
 perft 1 24
 perft 2 687
 perft 3 18206
@@ -6824,7 +6824,7 @@ perft 5 15518417
 perft 6 484217179
 
 id 758
-epd rkbn1r1b/pp1pppnp/6q1/2p3p1/5P1P/4N3/PPPPP1P1/RKB1NRQB w FAfa - 1 9
+epd rkbn1r1b/pp1pppnp/6q1/2p3p1/5P1P/4N3/PPPPP1P1/RKB1NRQB w FAfa -
 perft 1 23
 perft 2 831
 perft 3 21254
@@ -6833,7 +6833,7 @@ perft 5 21126103
 perft 6 744755212
 
 id 759
-epd rbknb1rq/ppp1p1p1/3pnp1p/8/6PP/2PP4/PP2PP2/RBKNBNRQ w GAga - 0 9
+epd rbknb1rq/ppp1p1p1/3pnp1p/8/6PP/2PP4/PP2PP2/RBKNBNRQ w GAga -
 perft 1 31
 perft 2 838
 perft 3 26800
@@ -6842,7 +6842,7 @@ perft 5 24008129
 perft 6 677776408
 
 id 760
-epd rknbb1rq/p1pn1ppp/4p3/1p1p4/2P5/1P2N1P1/P2PPP1P/RKNBB1RQ w GAga - 1 9
+epd rknbb1rq/p1pn1ppp/4p3/1p1p4/2P5/1P2N1P1/P2PPP1P/RKNBB1RQ w GAga -
 perft 1 29
 perft 2 830
 perft 3 24798
@@ -6851,7 +6851,7 @@ perft 5 22243832
 perft 6 660040360
 
 id 761
-epd rk1nbbrq/pp1p1ppp/3n4/P3p3/2p4P/8/1PPPPPP1/RKNNBBRQ w GAga - 1 9
+epd rk1nbbrq/pp1p1ppp/3n4/P3p3/2p4P/8/1PPPPPP1/RKNNBBRQ w GAga -
 perft 1 24
 perft 2 484
 perft 3 12776
@@ -6860,7 +6860,7 @@ perft 5 8379748
 perft 6 214004367
 
 id 762
-epd rknnbr1b/ppp2pqp/3p4/4p1p1/7P/3P1P2/PPP1P1P1/RKNNBRQB w FAfa - 0 9
+epd rknnbr1b/ppp2pqp/3p4/4p1p1/7P/3P1P2/PPP1P1P1/RKNNBRQB w FAfa -
 perft 1 32
 perft 2 838
 perft 3 26408
@@ -6869,7 +6869,7 @@ perft 5 23472124
 perft 6 699211365
 
 id 763
-epd rb1k1rbq/ppppN1pp/2nn4/5p2/7P/8/PPPPPPP1/RBK1NRBQ w FA - 1 9
+epd rb1k1rbq/ppppN1pp/2nn4/5p2/7P/8/PPPPPPP1/RBK1NRBQ w FA -
 perft 1 27
 perft 2 800
 perft 3 22785
@@ -6878,7 +6878,7 @@ perft 5 20804424
 perft 6 660917073
 
 id 764
-epd r1nbnrbq/kppppp1p/6p1/8/p1PP1P2/4P3/PP4PP/RKNBNRBQ w FA - 1 9
+epd r1nbnrbq/kppppp1p/6p1/8/p1PP1P2/4P3/PP4PP/RKNBNRBQ w FA -
 perft 1 28
 perft 2 757
 perft 3 21198
@@ -6887,7 +6887,7 @@ perft 5 17180857
 perft 6 507618340
 
 id 765
-epd rkn1rbbq/p1pppppp/2n5/1pP5/8/1N2P3/PP1P1PPP/RK1NRBBQ w EAea - 1 9
+epd rkn1rbbq/p1pppppp/2n5/1pP5/8/1N2P3/PP1P1PPP/RK1NRBBQ w EAea -
 perft 1 22
 perft 2 483
 perft 3 11890
@@ -6896,7 +6896,7 @@ perft 5 7497674
 perft 6 191130942
 
 id 766
-epd rknnrqbb/2pppppp/8/p7/Np3P2/3P4/PPP1P1PP/RKN1RQBB w EAea - 0 9
+epd rknnrqbb/2pppppp/8/p7/Np3P2/3P4/PPP1P1PP/RKN1RQBB w EAea -
 perft 1 25
 perft 2 536
 perft 3 14456
@@ -6905,7 +6905,7 @@ perft 5 9694947
 perft 6 245669668
 
 id 767
-epd bb1rknrn/1qppppp1/1p4B1/p6N/8/2P5/PP1PPPPP/B1QRK1RN w GDgd - 1 9
+epd bb1rknrn/1qppppp1/1p4B1/p6N/8/2P5/PP1PPPPP/B1QRK1RN w GDgd -
 perft 1 32
 perft 2 715
 perft 3 22421
@@ -6914,7 +6914,7 @@ perft 5 17860156
 perft 6 502410909
 
 id 768
-epd b1rbknrn/qpp1ppp1/p6p/3p4/2P5/1P1P1P2/P3P1PP/BQRBKNRN w GCgc - 0 9
+epd b1rbknrn/qpp1ppp1/p6p/3p4/2P5/1P1P1P2/P3P1PP/BQRBKNRN w GCgc -
 perft 1 30
 perft 2 818
 perft 3 24421
@@ -6923,7 +6923,7 @@ perft 5 20981488
 perft 6 611986786
 
 id 769
-epd bqkrnbrn/1pp1pp1p/p7/1B1p2p1/4P3/7P/PPPP1PP1/BQKRN1RN w - - 0 9
+epd bqkrnbrn/1pp1pp1p/p7/1B1p2p1/4P3/7P/PPPP1PP1/BQKRN1RN w - -
 perft 1 28
 perft 2 676
 perft 3 18366
@@ -6932,7 +6932,7 @@ perft 5 13126287
 perft 6 363765666
 
 id 770
-epd bqrknrnb/1p2ppp1/p1pp3p/8/3P1P2/1PP5/P3P1PP/BQRKNRNB w FCfc - 0 9
+epd bqrknrnb/1p2ppp1/p1pp3p/8/3P1P2/1PP5/P3P1PP/BQRKNRNB w FCfc -
 perft 1 31
 perft 2 646
 perft 3 20686
@@ -6941,7 +6941,7 @@ perft 5 14984618
 perft 6 349082278
 
 id 771
-epd qbbrkn1r/pppppp1p/8/6p1/2P1Pn1P/6N1/PP1P1PP1/QBBRKNR1 w GDd - 3 9
+epd qbbrkn1r/pppppp1p/8/6p1/2P1Pn1P/6N1/PP1P1PP1/QBBRKNR1 w GDd -
 perft 1 20
 perft 2 532
 perft 3 11581
@@ -6950,7 +6950,7 @@ perft 5 7512432
 perft 6 202967948
 
 id 772
-epd 1rbbknr1/p1ppp1pp/1pq2pn1/8/3P4/P3P3/QPP2PPP/1RBBKNRN w GBgb - 3 9
+epd 1rbbknr1/p1ppp1pp/1pq2pn1/8/3P4/P3P3/QPP2PPP/1RBBKNRN w GBgb -
 perft 1 31
 perft 2 1002
 perft 3 30581
@@ -6959,7 +6959,7 @@ perft 5 30642468
 perft 6 1009228283
 
 id 773
-epd qrbkn1rn/pppp1ppp/8/6b1/P1P1Pp2/8/1P1P2PP/QRBKNBRN w GBgb - 0 9
+epd qrbkn1rn/pppp1ppp/8/6b1/P1P1Pp2/8/1P1P2PP/QRBKNBRN w GBgb -
 perft 1 22
 perft 2 505
 perft 3 12447
@@ -6968,7 +6968,7 @@ perft 5 8192621
 perft 6 214730959
 
 id 774
-epd qrbk1rnb/p2ppp1p/5n2/1pp3p1/8/7P/PPPPPPPN/QRBKR1NB w Bfb - 0 9
+epd qrbk1rnb/p2ppp1p/5n2/1pp3p1/8/7P/PPPPPPPN/QRBKR1NB w Bfb -
 perft 1 20
 perft 2 619
 perft 3 13448
@@ -6977,7 +6977,7 @@ perft 5 10571176
 perft 6 369603424
 
 id 775
-epd qbrkb1r1/ppp2ppp/3pn1n1/P3p3/4P3/3P4/1PP2PPP/QBRKBNRN w GCgc - 1 9
+epd qbrkb1r1/ppp2ppp/3pn1n1/P3p3/4P3/3P4/1PP2PPP/QBRKBNRN w GCgc -
 perft 1 26
 perft 2 755
 perft 3 20596
@@ -6986,7 +6986,7 @@ perft 5 17164382
 perft 6 510878835
 
 id 776
-epd qrkbb1r1/ppp1pnpp/3p2n1/5p2/1P3P2/2Q3N1/P1PPP1PP/1RKBB1RN w GBgb - 0 9
+epd qrkbb1r1/ppp1pnpp/3p2n1/5p2/1P3P2/2Q3N1/P1PPP1PP/1RKBB1RN w GBgb -
 perft 1 35
 perft 2 918
 perft 3 32244
@@ -6995,7 +6995,7 @@ perft 5 30933394
 perft 6 867833733
 
 id 777
-epd qrknbbrn/ppp1ppp1/8/7p/2Bp4/4PPP1/PPPP3P/QRKNB1RN w GBgb - 0 9
+epd qrknbbrn/ppp1ppp1/8/7p/2Bp4/4PPP1/PPPP3P/QRKNB1RN w GBgb -
 perft 1 27
 perft 2 593
 perft 3 16168
@@ -7004,7 +7004,7 @@ perft 5 10422676
 perft 6 258348640
 
 id 778
-epd qrk1brnb/ppppp3/4n2p/5pp1/2PP4/2N4P/PP2PPP1/QRK1BRNB w FBfb - 2 9
+epd qrk1brnb/ppppp3/4n2p/5pp1/2PP4/2N4P/PP2PPP1/QRK1BRNB w FBfb -
 perft 1 24
 perft 2 672
 perft 3 17447
@@ -7013,7 +7013,7 @@ perft 5 13765777
 perft 6 414930519
 
 id 779
-epd qbrknrb1/p2ppppp/2p3n1/8/p4P2/6PP/1PPPP3/QBRKNRBN w FCfc - 0 9
+epd qbrknrb1/p2ppppp/2p3n1/8/p4P2/6PP/1PPPP3/QBRKNRBN w FCfc -
 perft 1 29
 perft 2 759
 perft 3 23235
@@ -7022,7 +7022,7 @@ perft 5 20416668
 perft 6 584870558
 
 id 780
-epd 1rkb1rbn/p1pp1ppp/3np3/1p6/4qP2/3NB3/PPPPPRPP/QRKB3N w Bfb - 0 9
+epd 1rkb1rbn/p1pp1ppp/3np3/1p6/4qP2/3NB3/PPPPPRPP/QRKB3N w Bfb -
 perft 1 22
 perft 2 923
 perft 3 22585
@@ -7031,7 +7031,7 @@ perft 5 24049880
 perft 6 957218571
 
 id 781
-epd 1rknrbbn/p1pp1p1p/8/1p2p1p1/4qPP1/2P5/PP1PP1BP/QRKNR1BN w EBeb - 0 9
+epd 1rknrbbn/p1pp1p1p/8/1p2p1p1/4qPP1/2P5/PP1PP1BP/QRKNR1BN w EBeb -
 perft 1 28
 perft 2 1309
 perft 3 36355
@@ -7040,7 +7040,7 @@ perft 5 44576409
 perft 6 1846382333
 
 id 782
-epd qrk1rn1b/ppppp2p/4n3/3b1pp1/4P2P/5BP1/PPPP1P2/QRKNRNB1 w EBeb - 3 9
+epd qrk1rn1b/ppppp2p/4n3/3b1pp1/4P2P/5BP1/PPPP1P2/QRKNRNB1 w EBeb -
 perft 1 26
 perft 2 839
 perft 3 22189
@@ -7049,7 +7049,7 @@ perft 5 19978260
 perft 6 661207281
 
 id 783
-epd bbrqk1rn/pp1ppppp/8/2p5/2P1P3/5n1P/PPBP1PP1/B1RQKNRN w GCgc - 1 9
+epd bbrqk1rn/pp1ppppp/8/2p5/2P1P3/5n1P/PPBP1PP1/B1RQKNRN w GCgc -
 perft 1 3
 perft 2 95
 perft 3 2690
@@ -7058,7 +7058,7 @@ perft 5 2518864
 perft 6 80775549
 
 id 784
-epd brqbk2n/pppppprp/8/6p1/1P3n2/5P2/P1PPP1PP/R1QBKNRN w Gb - 2 9
+epd brqbk2n/pppppprp/8/6p1/1P3n2/5P2/P1PPP1PP/R1QBKNRN w Gb -
 perft 1 22
 perft 2 593
 perft 3 13255
@@ -7067,7 +7067,7 @@ perft 5 8922397
 perft 6 253271592
 
 id 785
-epd brqknbr1/pp3ppp/3p2n1/2p1p3/2P5/5P2/PPKPP1PP/BRQ1NBRN w gb - 0 9
+epd brqknbr1/pp3ppp/3p2n1/2p1p3/2P5/5P2/PPKPP1PP/BRQ1NBRN w gb -
 perft 1 21
 perft 2 590
 perft 3 13190
@@ -7076,7 +7076,7 @@ perft 5 9581695
 perft 6 304103516
 
 id 786
-epd 1rqknrnb/2pp1ppp/p3p3/1p6/P2P4/5bP1/1PP1PP1P/BRQKNRNB w FBfb - 0 9
+epd 1rqknrnb/2pp1ppp/p3p3/1p6/P2P4/5bP1/1PP1PP1P/BRQKNRNB w FBfb -
 perft 1 24
 perft 2 737
 perft 3 20052
@@ -7085,7 +7085,7 @@ perft 5 17948681
 perft 6 536330341
 
 id 787
-epd rbb1k1rn/p1pqpppp/6n1/1p1p4/5P2/3PP3/PPP1K1PP/RBBQ1NRN w ga - 3 9
+epd rbb1k1rn/p1pqpppp/6n1/1p1p4/5P2/3PP3/PPP1K1PP/RBBQ1NRN w ga -
 perft 1 24
 perft 2 694
 perft 3 16773
@@ -7094,7 +7094,7 @@ perft 5 13094823
 perft 6 419402704
 
 id 788
-epd rqbbknr1/1ppp2pp/p5n1/4pp2/P7/1PP5/1Q1PPPPP/R1BBKNRN w GAga - 0 9
+epd rqbbknr1/1ppp2pp/p5n1/4pp2/P7/1PP5/1Q1PPPPP/R1BBKNRN w GAga -
 perft 1 24
 perft 2 600
 perft 3 15347
@@ -7103,7 +7103,7 @@ perft 5 11029596
 perft 6 308553169
 
 id 789
-epd rqbknbrn/2pppppp/6Q1/pp6/8/2P5/PP1PPPPP/R1BKNBRN w GAga - 2 9
+epd rqbknbrn/2pppppp/6Q1/pp6/8/2P5/PP1PPPPP/R1BKNBRN w GAga -
 perft 1 40
 perft 2 949
 perft 3 34100
@@ -7112,7 +7112,7 @@ perft 5 31296485
 perft 6 881529007
 
 id 790
-epd rqbknr1b/pp1ppp2/2p2n1p/6p1/8/3P1PPP/PPP1P3/RQBKNRNB w FAfa - 0 9
+epd rqbknr1b/pp1ppp2/2p2n1p/6p1/8/3P1PPP/PPP1P3/RQBKNRNB w FAfa -
 perft 1 20
 perft 2 560
 perft 3 12275
@@ -7121,7 +7121,7 @@ perft 5 8687544
 perft 6 277906201
 
 id 791
-epd rbqkbnrn/p3pppp/1p6/3p4/P1p3P1/1P6/1QPPPP1P/RB1KBNRN w GAga - 0 9
+epd rbqkbnrn/p3pppp/1p6/3p4/P1p3P1/1P6/1QPPPP1P/RB1KBNRN w GAga -
 perft 1 30
 perft 2 1155
 perft 3 35865
@@ -7130,7 +7130,7 @@ perft 5 43092716
 perft 6 1614019629
 
 id 792
-epd rqkbb1rn/p1p1pppn/1p1p4/7p/4PP2/7P/PPPPB1P1/RQK1BNRN w GAga - 1 9
+epd rqkbb1rn/p1p1pppn/1p1p4/7p/4PP2/7P/PPPPB1P1/RQK1BNRN w GAga -
 perft 1 30
 perft 2 701
 perft 3 20804
@@ -7139,7 +7139,7 @@ perft 5 15450970
 perft 6 401499189
 
 id 793
-epd rqknbbrn/1p2pp1p/3p2p1/p1p5/P2P4/1P6/1KP1PPPP/RQ1NBBRN w ga - 0 9
+epd rqknbbrn/1p2pp1p/3p2p1/p1p5/P2P4/1P6/1KP1PPPP/RQ1NBBRN w ga -
 perft 1 28
 perft 2 756
 perft 3 21655
@@ -7148,7 +7148,7 @@ perft 5 17989811
 perft 6 525585996
 
 id 794
-epd rqknbrnb/1pp3pp/5p2/p2pp3/P7/3PPN2/1PP2PPP/RQKNBR1B w FAfa - 0 9
+epd rqknbrnb/1pp3pp/5p2/p2pp3/P7/3PPN2/1PP2PPP/RQKNBR1B w FAfa -
 perft 1 26
 perft 2 731
 perft 3 19509
@@ -7157,7 +7157,7 @@ perft 5 15209404
 perft 6 439767476
 
 id 795
-epd rbqkr1bn/p1pppp1p/1p1n4/6p1/7P/3P1PP1/PPP1P3/RBQKNRBN w FAa - 0 9
+epd rbqkr1bn/p1pppp1p/1p1n4/6p1/7P/3P1PP1/PPP1P3/RBQKNRBN w FAa -
 perft 1 27
 perft 2 586
 perft 3 16282
@@ -7166,7 +7166,7 @@ perft 5 10905865
 perft 6 274364342
 
 id 796
-epd rqk1nrb1/ppbp1ppp/4p1n1/2p5/7P/1PP5/P2PPPP1/RQKBNRBN w FAfa - 1 9
+epd rqk1nrb1/ppbp1ppp/4p1n1/2p5/7P/1PP5/P2PPPP1/RQKBNRBN w FAfa -
 perft 1 27
 perft 2 749
 perft 3 21480
@@ -7175,7 +7175,7 @@ perft 5 18084787
 perft 6 520547029
 
 id 797
-epd rqknrbbn/pp1p1ppp/4p3/2p5/3P2P1/7P/PPP1PP2/RQKNRBBN w EAa - 0 9
+epd rqknrbbn/pp1p1ppp/4p3/2p5/3P2P1/7P/PPP1PP2/RQKNRBBN w EAa -
 perft 1 20
 perft 2 533
 perft 3 11829
@@ -7184,7 +7184,7 @@ perft 5 8230417
 perft 6 245871540
 
 id 798
-epd rqknrnbb/pp1ppp1p/2p3p1/8/8/1P2P1NP/P1PP1PP1/RQKNR1BB w EAea - 0 9
+epd rqknrnbb/pp1ppp1p/2p3p1/8/8/1P2P1NP/P1PP1PP1/RQKNR1BB w EAea -
 perft 1 22
 perft 2 633
 perft 3 14480
@@ -7193,7 +7193,7 @@ perft 5 10827868
 perft 6 343525739
 
 id 799
-epd 1brkq1rn/2pppppp/1p2n3/p2bN3/8/7P/PPPPPPP1/BBRKQ1RN w GCgc - 2 9
+epd 1brkq1rn/2pppppp/1p2n3/p2bN3/8/7P/PPPPPPP1/BBRKQ1RN w GCgc -
 perft 1 27
 perft 2 748
 perft 3 20134
@@ -7202,7 +7202,7 @@ perft 5 16010135
 perft 6 475206624
 
 id 800
-epd brkbqnrn/2pp1ppp/8/1p2p3/Pp2N3/8/2PPPPPP/BRKBQNR1 w GBgb - 0 9
+epd brkbqnrn/2pp1ppp/8/1p2p3/Pp2N3/8/2PPPPPP/BRKBQNR1 w GBgb -
 perft 1 30
 perft 2 827
 perft 3 25308
@@ -7211,7 +7211,7 @@ perft 5 23746165
 perft 6 751690068
 
 id 801
-epd brk1nbrn/pp1ppppp/2p5/7P/5P2/q2P4/PPP1P1P1/BRKQNBRN w GBgb - 1 9
+epd brk1nbrn/pp1ppppp/2p5/7P/5P2/q2P4/PPP1P1P1/BRKQNBRN w GBgb -
 perft 1 15
 perft 2 471
 perft 3 8716
@@ -7220,7 +7220,7 @@ perft 5 5960901
 perft 6 190316951
 
 id 802
-epd brkqnrnb/1p1pp1p1/p4p2/2p4p/8/P2PP3/1PP1QPPP/BRK1NRNB w FBfb - 0 9
+epd brkqnrnb/1p1pp1p1/p4p2/2p4p/8/P2PP3/1PP1QPPP/BRK1NRNB w FBfb -
 perft 1 24
 perft 2 479
 perft 3 12584
@@ -7229,7 +7229,7 @@ perft 5 7830230
 perft 6 190419716
 
 id 803
-epd rbbkqnrn/2ppp2p/pp3p2/6p1/P6P/8/RPPPPPP1/1BBKQNRN w Gga - 0 9
+epd rbbkqnrn/2ppp2p/pp3p2/6p1/P6P/8/RPPPPPP1/1BBKQNRN w Gga -
 perft 1 21
 perft 2 523
 perft 3 12125
@@ -7238,7 +7238,7 @@ perft 5 8322614
 perft 6 242240658
 
 id 804
-epd rkbbqr1n/1ppppppn/7p/p7/4P3/2P2P2/PP1PB1PP/RKB1QNRN w GAa - 3 9
+epd rkbbqr1n/1ppppppn/7p/p7/4P3/2P2P2/PP1PB1PP/RKB1QNRN w GAa -
 perft 1 27
 perft 2 563
 perft 3 16026
@@ -7247,7 +7247,7 @@ perft 5 11105151
 perft 6 283211800
 
 id 805
-epd rkbqnbrn/ppppp3/8/5ppp/2P3P1/7P/PPQPPP2/RKB1NBRN w GAga - 0 9
+epd rkbqnbrn/ppppp3/8/5ppp/2P3P1/7P/PPQPPP2/RKB1NBRN w GAga -
 perft 1 28
 perft 2 639
 perft 3 19250
@@ -7256,7 +7256,7 @@ perft 5 14872172
 perft 6 384663405
 
 id 806
-epd rkb1nrnb/pppp1pp1/5q1p/8/P3p3/4R1P1/1PPPPP1P/1KBQNRNB w Ffa - 0 9
+epd rkb1nrnb/pppp1pp1/5q1p/8/P3p3/4R1P1/1PPPPP1P/1KBQNRNB w Ffa -
 perft 1 28
 perft 2 873
 perft 3 23690
@@ -7265,7 +7265,7 @@ perft 5 20209424
 perft 6 625281937
 
 id 807
-epd rbkqb1rn/1p1ppppp/4n3/p1p5/8/3PBP2/PPP1P1PP/RBKQ1NRN w GAga - 0 9
+epd rbkqb1rn/1p1ppppp/4n3/p1p5/8/3PBP2/PPP1P1PP/RBKQ1NRN w GAga -
 perft 1 26
 perft 2 798
 perft 3 21416
@@ -7274,7 +7274,7 @@ perft 5 18475618
 perft 6 591681956
 
 id 808
-epd rk1qbnrn/1p1ppppp/1b6/p1p5/P7/2P3NP/1P1PPPP1/RKQBB1RN w GAga - 0 9
+epd rk1qbnrn/1p1ppppp/1b6/p1p5/P7/2P3NP/1P1PPPP1/RKQBB1RN w GAga -
 perft 1 22
 perft 2 506
 perft 3 12313
@@ -7283,7 +7283,7 @@ perft 5 7891676
 perft 6 205739580
 
 id 809
-epd rk1nbbrn/ppp1ppp1/8/3p3p/1P1P2q1/5PB1/P1P1P1PP/RKQN1BRN w GAga - 1 9
+epd rk1nbbrn/ppp1ppp1/8/3p3p/1P1P2q1/5PB1/P1P1P1PP/RKQN1BRN w GAga -
 perft 1 31
 perft 2 956
 perft 3 29219
@@ -7292,7 +7292,7 @@ perft 5 27827461
 perft 6 876341492
 
 id 810
-epd rkqnbr1b/pp1pppp1/7p/2p2n2/P2P4/7N/RPP1PPPP/1KQNBR1B w Ffa - 0 9
+epd rkqnbr1b/pp1pppp1/7p/2p2n2/P2P4/7N/RPP1PPPP/1KQNBR1B w Ffa -
 perft 1 31
 perft 2 750
 perft 3 24267
@@ -7301,7 +7301,7 @@ perft 5 21639104
 perft 6 617064197
 
 id 811
-epd rbkq1rbn/2p1pppp/pp3n2/3p4/5P2/3N2N1/PPPPP1PP/RBKQR1B1 w Afa - 2 9
+epd rbkq1rbn/2p1pppp/pp3n2/3p4/5P2/3N2N1/PPPPP1PP/RBKQR1B1 w Afa -
 perft 1 26
 perft 2 647
 perft 3 18027
@@ -7310,7 +7310,7 @@ perft 5 13643783
 perft 6 369702807
 
 id 812
-epd rkqbr1bn/p2ppppp/1pp2n2/8/5P2/3P1N2/PPP1PRPP/RKQB2BN w Aa - 3 9
+epd rkqbr1bn/p2ppppp/1pp2n2/8/5P2/3P1N2/PPP1PRPP/RKQB2BN w Aa -
 perft 1 24
 perft 2 574
 perft 3 14593
@@ -7319,7 +7319,7 @@ perft 5 10066892
 perft 6 271121237
 
 id 813
-epd rk1qrbbn/p1ppp1pp/1p2n3/5p2/1P6/K3N3/P1PPPPPP/R1Q1RBBN w ea - 0 9
+epd rk1qrbbn/p1ppp1pp/1p2n3/5p2/1P6/K3N3/P1PPPPPP/R1Q1RBBN w ea -
 perft 1 25
 perft 2 548
 perft 3 14069
@@ -7328,7 +7328,7 @@ perft 5 9043111
 perft 6 235545764
 
 id 814
-epd rkqnrnbb/pp1pp3/2p5/5ppp/8/PP4NP/2PPPPP1/RKQNR1BB w EAea - 0 9
+epd rkqnrnbb/pp1pp3/2p5/5ppp/8/PP4NP/2PPPPP1/RKQNR1BB w EAea -
 perft 1 23
 perft 2 727
 perft 3 18228
@@ -7337,7 +7337,7 @@ perft 5 15078056
 perft 6 471296844
 
 id 815
-epd bbrknq1r/ppppppp1/8/7p/5n2/3P4/PPP1PNPP/BBKRNQR1 w c - 0 9
+epd bbrknq1r/ppppppp1/8/7p/5n2/3P4/PPP1PNPP/BBKRNQR1 w c -
 perft 1 21
 perft 2 610
 perft 3 13300
@@ -7346,7 +7346,7 @@ perft 5 9605845
 perft 6 293532398
 
 id 816
-epd brkbnqr1/2pppnpp/pp3p2/8/4PPPP/8/PPPP4/BRKBNQRN w GBgb - 1 9
+epd brkbnqr1/2pppnpp/pp3p2/8/4PPPP/8/PPPP4/BRKBNQRN w GBgb -
 perft 1 30
 perft 2 757
 perft 3 23908
@@ -7355,7 +7355,7 @@ perft 5 20360394
 perft 6 548380577
 
 id 817
-epd brk1qb1n/ppppppr1/2n3pp/8/2P3P1/2N5/PP1PPP1P/BR1KQBRN w b - 1 9
+epd brk1qb1n/ppppppr1/2n3pp/8/2P3P1/2N5/PP1PPP1P/BR1KQBRN w b -
 perft 1 26
 perft 2 570
 perft 3 15537
@@ -7364,7 +7364,7 @@ perft 5 10081351
 perft 6 242864559
 
 id 818
-epd brknq1nb/pp2prpp/8/2pP1p2/6P1/2N5/PPPP1P1P/BRK1QRNB w FBb - 1 9
+epd brknq1nb/pp2prpp/8/2pP1p2/6P1/2N5/PPPP1P1P/BRK1QRNB w FBb -
 perft 1 33
 perft 2 830
 perft 3 27897
@@ -7373,7 +7373,7 @@ perft 5 26262884
 perft 6 765831403
 
 id 819
-epd rbbk1qrn/ppp1p1pp/5p2/3p1n2/7N/P7/1PPPPPPP/RBB1KQRN w ga - 0 9
+epd rbbk1qrn/ppp1p1pp/5p2/3p1n2/7N/P7/1PPPPPPP/RBB1KQRN w ga -
 perft 1 21
 perft 2 562
 perft 3 13060
@@ -7382,7 +7382,7 @@ perft 5 9520963
 perft 6 290579255
 
 id 820
-epd rk1b1qrn/ppp1pppp/5n2/3pN3/P6P/7b/1PPPPPP1/RKBB1QRN w GAga - 4 9
+epd rk1b1qrn/ppp1pppp/5n2/3pN3/P6P/7b/1PPPPPP1/RKBB1QRN w GAga -
 perft 1 28
 perft 2 677
 perft 3 19235
@@ -7391,7 +7391,7 @@ perft 5 14354779
 perft 6 383207197
 
 id 821
-epd rkbnqbrn/pp1ppp1p/2p5/6p1/P7/4P3/KPPPQPPP/R1BN1BRN w - - 3 9
+epd rkbnqbrn/pp1ppp1p/2p5/6p1/P7/4P3/KPPPQPPP/R1BN1BRN w - -
 perft 1 28
 perft 2 585
 perft 3 17443
@@ -7400,7 +7400,7 @@ perft 5 12574541
 perft 6 310495538
 
 id 822
-epd rk1nqrnb/pbpppp2/1p4p1/7p/P7/5NP1/1PPPPPBP/RKBNQR2 w FAfa - 2 9
+epd rk1nqrnb/pbpppp2/1p4p1/7p/P7/5NP1/1PPPPPBP/RKBNQR2 w FAfa -
 perft 1 26
 perft 2 774
 perft 3 21626
@@ -7409,7 +7409,7 @@ perft 5 19093408
 perft 6 576325868
 
 id 823
-epd rbknb1rn/p1pp2pp/1p6/4pp2/1q3P1B/2N5/PPPPPNPP/RBK2QR1 w GAga - 2 9
+epd rbknb1rn/p1pp2pp/1p6/4pp2/1q3P1B/2N5/PPPPPNPP/RBK2QR1 w GAga -
 perft 1 31
 perft 2 1206
 perft 3 36940
@@ -7418,7 +7418,7 @@ perft 5 42849564
 perft 6 1555711209
 
 id 824
-epd rk1bbqrn/pp1pp1pp/3n4/5p2/3p4/1PP5/PK2PPPP/R1NBBQRN w ga - 0 9
+epd rk1bbqrn/pp1pp1pp/3n4/5p2/3p4/1PP5/PK2PPPP/R1NBBQRN w ga -
 perft 1 21
 perft 2 629
 perft 3 14059
@@ -7427,7 +7427,7 @@ perft 5 10587910
 perft 6 332632033
 
 id 825
-epd rknqbbr1/p1pp1pp1/1p4n1/4p2p/4P1P1/6RB/PPPP1P1P/RKNQB2N w Aga - 0 9
+epd rknqbbr1/p1pp1pp1/1p4n1/4p2p/4P1P1/6RB/PPPP1P1P/RKNQB2N w Aga -
 perft 1 27
 perft 2 753
 perft 3 20918
@@ -7436,7 +7436,7 @@ perft 5 17318772
 perft 6 507563675
 
 id 826
-epd rknqbr1b/pppp1ppp/4p2n/8/1P3P2/4P3/P1PPN1PP/RKNQBR1B w FAfa - 2 9
+epd rknqbr1b/pppp1ppp/4p2n/8/1P3P2/4P3/P1PPN1PP/RKNQBR1B w FAfa -
 perft 1 26
 perft 2 623
 perft 3 17177
@@ -7445,7 +7445,7 @@ perft 5 13389799
 perft 6 383508368
 
 id 827
-epd r2kqrbn/bppppppp/2n5/p4B2/5P2/2P5/PP1PP1PP/1RKNQRBN w F - 2 9
+epd r2kqrbn/bppppppp/2n5/p4B2/5P2/2P5/PP1PP1PP/1RKNQRBN w F -
 perft 1 39
 perft 2 1026
 perft 3 37800
@@ -7454,7 +7454,7 @@ perft 5 35946987
 perft 6 992756232
 
 id 828
-epd rk1bqrb1/ppppppp1/1n6/7p/2P2P1n/4P1Q1/PP1P2PP/RKNB1RBN w FAfa - 0 9
+epd rk1bqrb1/ppppppp1/1n6/7p/2P2P1n/4P1Q1/PP1P2PP/RKNB1RBN w FAfa -
 perft 1 35
 perft 2 760
 perft 3 25817
@@ -7463,7 +7463,7 @@ perft 5 21014787
 perft 6 536852043
 
 id 829
-epd rkq1rb1n/ppppp1pp/1n6/5p2/PPb2P2/8/1KPPP1PP/R1NQRBBN w ea - 1 9
+epd rkq1rb1n/ppppp1pp/1n6/5p2/PPb2P2/8/1KPPP1PP/R1NQRBBN w ea -
 perft 1 27
 perft 2 754
 perft 3 21009
@@ -7472,7 +7472,7 @@ perft 5 16461795
 perft 6 448313956
 
 id 830
-epd rknqr2b/pppnp1pp/3p4/3b1p2/8/1N1P2N1/PPP1PPPP/RKQ1R1BB w EAea - 1 9
+epd rknqr2b/pppnp1pp/3p4/3b1p2/8/1N1P2N1/PPP1PPPP/RKQ1R1BB w EAea -
 perft 1 27
 perft 2 803
 perft 3 23708
@@ -7481,7 +7481,7 @@ perft 5 21875031
 perft 6 654754840
 
 id 831
-epd bbrknrqn/ppppp1pB/8/2P2p1p/8/5N2/PP1PPPPP/B1RK1RQN w FCfc - 0 9
+epd bbrknrqn/ppppp1pB/8/2P2p1p/8/5N2/PP1PPPPP/B1RK1RQN w FCfc -
 perft 1 30
 perft 2 799
 perft 3 23923
@@ -7490,7 +7490,7 @@ perft 5 20532790
 perft 6 603059376
 
 id 832
-epd brkbnrq1/1pppp1p1/6np/p4p2/4P3/1PP5/P1KP1PPP/BR1BNRQN w fb - 1 9
+epd brkbnrq1/1pppp1p1/6np/p4p2/4P3/1PP5/P1KP1PPP/BR1BNRQN w fb -
 perft 1 27
 perft 2 726
 perft 3 19329
@@ -7499,7 +7499,7 @@ perft 5 15156662
 perft 6 457601127
 
 id 833
-epd brknrbq1/1p1p1ppp/p3p1n1/2p5/8/1P1BPP2/P1PP2PP/BRKNR1QN w EBeb - 0 9
+epd brknrbq1/1p1p1ppp/p3p1n1/2p5/8/1P1BPP2/P1PP2PP/BRKNR1QN w EBeb -
 perft 1 36
 perft 2 786
 perft 3 27868
@@ -7508,7 +7508,7 @@ perft 5 22852433
 perft 6 577223409
 
 id 834
-epd brknrqnb/p2ppp1p/2p5/1p6/3P2p1/P1P1N3/1P2PPPP/BRK1RQNB w EBeb - 0 9
+epd brknrqnb/p2ppp1p/2p5/1p6/3P2p1/P1P1N3/1P2PPPP/BRK1RQNB w EBeb -
 perft 1 23
 perft 2 649
 perft 3 15169
@@ -7517,7 +7517,7 @@ perft 5 10687843
 perft 6 320881984
 
 id 835
-epd rbbk1rqn/1ppppppp/3n4/p7/2P5/3N4/PP1PPPPP/RBB1KRQN w fa - 1 9
+epd rbbk1rqn/1ppppppp/3n4/p7/2P5/3N4/PP1PPPPP/RBB1KRQN w fa -
 perft 1 20
 perft 2 478
 perft 3 11094
@@ -7526,7 +7526,7 @@ perft 5 7094988
 perft 6 185488058
 
 id 836
-epd rkbbnrqn/p2p1ppp/1p2p3/8/P1p1P3/1BP5/1P1P1PPP/RKB1NRQN w FAfa - 0 9
+epd rkbbnrqn/p2p1ppp/1p2p3/8/P1p1P3/1BP5/1P1P1PPP/RKB1NRQN w FAfa -
 perft 1 22
 perft 2 570
 perft 3 13295
@@ -7535,7 +7535,7 @@ perft 5 8671852
 perft 6 229898448
 
 id 837
-epd rkb1rb1n/ppppppqp/8/2n3p1/2P1P1P1/8/PP1P1P1P/RKBNRBQN w EAea - 1 9
+epd rkb1rb1n/ppppppqp/8/2n3p1/2P1P1P1/8/PP1P1P1P/RKBNRBQN w EAea -
 perft 1 23
 perft 2 663
 perft 3 16212
@@ -7544,7 +7544,7 @@ perft 5 12900485
 perft 6 404944553
 
 id 838
-epd rkb1rqnb/pppp3p/2n3p1/4pp2/P2P3P/2P5/1P2PPP1/RKBNRQNB w EAea - 0 9
+epd rkb1rqnb/pppp3p/2n3p1/4pp2/P2P3P/2P5/1P2PPP1/RKBNRQNB w EAea -
 perft 1 25
 perft 2 845
 perft 3 22188
@@ -7553,7 +7553,7 @@ perft 5 20276176
 perft 6 683290790
 
 id 839
-epd rbk1brqn/ppp1pppp/8/3p4/7P/1P4P1/2PPPP2/RBKNBRQN w FAfa - 0 9
+epd rbk1brqn/ppp1pppp/8/3p4/7P/1P4P1/2PPPP2/RBKNBRQN w FAfa -
 perft 1 24
 perft 2 526
 perft 3 13862
@@ -7562,7 +7562,7 @@ perft 5 9054028
 perft 6 222704171
 
 id 840
-epd rknbbrqn/pp3pp1/4p3/2pp3p/2P5/8/PPBPPPPP/RKN1BRQN w FAfa - 0 9
+epd rknbbrqn/pp3pp1/4p3/2pp3p/2P5/8/PPBPPPPP/RKN1BRQN w FAfa -
 perft 1 26
 perft 2 756
 perft 3 19280
@@ -7571,7 +7571,7 @@ perft 5 14697705
 perft 6 433719427
 
 id 841
-epd 1knrbbqn/rp1p1ppp/p3p3/2p5/8/5P1P/PPPPP1P1/RKNRBBQN w DAd - 0 9
+epd 1knrbbqn/rp1p1ppp/p3p3/2p5/8/5P1P/PPPPP1P1/RKNRBBQN w DAd -
 perft 1 26
 perft 2 539
 perft 3 15194
@@ -7580,7 +7580,7 @@ perft 5 10223443
 perft 6 248715580
 
 id 842
-epd rknr1qnb/ppp1p1pp/3p2b1/8/4p3/1P3P1P/P1PP2P1/RKNRBQNB w DAda - 0 9
+epd rknr1qnb/ppp1p1pp/3p2b1/8/4p3/1P3P1P/P1PP2P1/RKNRBQNB w DAda -
 perft 1 25
 perft 2 701
 perft 3 18969
@@ -7589,7 +7589,7 @@ perft 5 16047041
 perft 6 496340789
 
 id 843
-epd rbk1r1bn/ppppp1pp/4n3/5p2/1P3P2/4N2P/PqPPP1P1/RBK1RQBN w EAea - 1 9
+epd rbk1r1bn/ppppp1pp/4n3/5p2/1P3P2/4N2P/PqPPP1P1/RBK1RQBN w EAea -
 perft 1 2
 perft 2 60
 perft 3 1319
@@ -7598,7 +7598,7 @@ perft 5 1017864
 perft 6 33183408
 
 id 844
-epd r1nbrqbn/k1ppp1pp/1p6/p4p2/2P5/6PQ/PP1PPP1P/RKNBR1BN w EA - 0 9
+epd r1nbrqbn/k1ppp1pp/1p6/p4p2/2P5/6PQ/PP1PPP1P/RKNBR1BN w EA -
 perft 1 27
 perft 2 699
 perft 3 20436
@@ -7607,7 +7607,7 @@ perft 5 17192121
 perft 6 499247248
 
 id 845
-epd rknrqbbn/1pp1pp2/p5p1/3p3p/6P1/PN5P/1PPPPP2/RK1RQBBN w DAda - 0 9
+epd rknrqbbn/1pp1pp2/p5p1/3p3p/6P1/PN5P/1PPPPP2/RK1RQBBN w DAda -
 perft 1 23
 perft 2 611
 perft 3 15515
@@ -7616,7 +7616,7 @@ perft 5 11917036
 perft 6 352885930
 
 id 846
-epd rknrqn1b/p1pp1ppb/8/1p2p1Qp/3P4/3N4/PPP1PPPP/RK1R1NBB w DAda - 0 9
+epd rknrqn1b/p1pp1ppb/8/1p2p1Qp/3P4/3N4/PPP1PPPP/RK1R1NBB w DAda -
 perft 1 45
 perft 2 1170
 perft 3 48283
@@ -7625,7 +7625,7 @@ perft 5 52213677
 perft 6 1500007485
 
 id 847
-epd bbkrnrnq/p2p1ppp/2p1p3/1p6/1P2Q3/6P1/P1PPPP1P/BBKRNRN1 w - - 0 9
+epd bbkrnrnq/p2p1ppp/2p1p3/1p6/1P2Q3/6P1/P1PPPP1P/BBKRNRN1 w - -
 perft 1 41
 perft 2 1035
 perft 3 39895
@@ -7634,7 +7634,7 @@ perft 5 38555608
 perft 6 1037686769
 
 id 848
-epd brkbnr2/1ppppp1p/7n/p5N1/P2q4/8/1PPPPPPP/BRKBNRQ1 w FBfb - 1 9
+epd brkbnr2/1ppppp1p/7n/p5N1/P2q4/8/1PPPPPPP/BRKBNRQ1 w FBfb -
 perft 1 22
 perft 2 869
 perft 3 19234
@@ -7643,7 +7643,7 @@ perft 5 16453359
 perft 6 567287944
 
 id 849
-epd brknrbnq/p1ppppp1/1p6/7p/2PP4/5P2/PPK1P1PP/BR1NRBNQ w eb - 1 9
+epd brknrbnq/p1ppppp1/1p6/7p/2PP4/5P2/PPK1P1PP/BR1NRBNQ w eb -
 perft 1 23
 perft 2 641
 perft 3 14748
@@ -7652,7 +7652,7 @@ perft 5 10192718
 perft 6 302864305
 
 id 850
-epd brk1r1qb/pp1ppnpp/2p2pn1/8/6N1/2N3P1/PPPPPP1P/BRK1R1QB w EBeb - 3 9
+epd brk1r1qb/pp1ppnpp/2p2pn1/8/6N1/2N3P1/PPPPPP1P/BRK1R1QB w EBeb -
 perft 1 32
 perft 2 863
 perft 3 28379
@@ -7661,7 +7661,7 @@ perft 5 25848794
 perft 6 720443112
 
 id 851
-epd rbbk1rnq/pppp1pp1/4p2p/8/3P2n1/4BN1P/PPP1PPP1/RB1K1RNQ w FAfa - 3 9
+epd rbbk1rnq/pppp1pp1/4p2p/8/3P2n1/4BN1P/PPP1PPP1/RB1K1RNQ w FAfa -
 perft 1 26
 perft 2 628
 perft 3 16151
@@ -7670,7 +7670,7 @@ perft 5 11237919
 perft 6 300314373
 
 id 852
-epd rkbbnr1q/p1pppppp/5n2/1p5B/PP6/4P3/2PP1PPP/RKB1NRNQ w FAfa - 0 9
+epd rkbbnr1q/p1pppppp/5n2/1p5B/PP6/4P3/2PP1PPP/RKB1NRNQ w FAfa -
 perft 1 30
 perft 2 692
 perft 3 21036
@@ -7679,7 +7679,7 @@ perft 5 16025428
 perft 6 420887328
 
 id 853
-epd rkb1rbnq/1pppp1pp/5p2/p7/5n1P/1PN3P1/P1PPPP2/RKB1RBNQ w EAea - 0 9
+epd rkb1rbnq/1pppp1pp/5p2/p7/5n1P/1PN3P1/P1PPPP2/RKB1RBNQ w EAea -
 perft 1 32
 perft 2 825
 perft 3 27130
@@ -7688,7 +7688,7 @@ perft 5 23593363
 perft 6 622249676
 
 id 854
-epd rkbnrnqb/1ppp1p1p/p5p1/4p3/4P3/2N2P2/PPPP2PP/RKBR1NQB w Aea - 0 9
+epd rkbnrnqb/1ppp1p1p/p5p1/4p3/4P3/2N2P2/PPPP2PP/RKBR1NQB w Aea -
 perft 1 24
 perft 2 487
 perft 3 13300
@@ -7697,7 +7697,7 @@ perft 5 8782713
 perft 6 215787079
 
 id 855
-epd rbknbr1q/pppp2pp/4p3/5p1n/1P2P2N/8/P1PP1PPP/RBKNBR1Q w FAfa - 0 9
+epd rbknbr1q/pppp2pp/4p3/5p1n/1P2P2N/8/P1PP1PPP/RBKNBR1Q w FAfa -
 perft 1 23
 perft 2 571
 perft 3 13799
@@ -7706,7 +7706,7 @@ perft 5 9224232
 perft 6 257288920
 
 id 856
-epd rknbb1nq/pppppr2/5pp1/7p/8/1N4P1/PPPPPP1P/RK1BBRNQ w FAa - 2 9
+epd rknbb1nq/pppppr2/5pp1/7p/8/1N4P1/PPPPPP1P/RK1BBRNQ w FAa -
 perft 1 26
 perft 2 548
 perft 3 15618
@@ -7715,7 +7715,7 @@ perft 5 10587626
 perft 6 253006082
 
 id 857
-epd rknr1bnq/p2pp1pp/1p3p2/2p4b/6PP/2P2N2/PP1PPP2/RKNRBB1Q w DAda - 1 9
+epd rknr1bnq/p2pp1pp/1p3p2/2p4b/6PP/2P2N2/PP1PPP2/RKNRBB1Q w DAda -
 perft 1 25
 perft 2 502
 perft 3 13150
@@ -7724,7 +7724,7 @@ perft 5 7824941
 perft 6 175766730
 
 id 858
-epd rknrb1qb/ppp1pppp/3p4/8/4P1nP/2P5/PPKP1PP1/R1NRBNQB w da - 1 9
+epd rknrb1qb/ppp1pppp/3p4/8/4P1nP/2P5/PPKP1PP1/R1NRBNQB w da -
 perft 1 23
 perft 2 643
 perft 3 14849
@@ -7733,7 +7733,7 @@ perft 5 10507328
 perft 6 312096061
 
 id 859
-epd rbk1rnbq/pppp1npp/4p3/5p2/4P1P1/7P/PPPP1P1N/RBKNR1BQ w EAea - 1 9
+epd rbk1rnbq/pppp1npp/4p3/5p2/4P1P1/7P/PPPP1P1N/RBKNR1BQ w EAea -
 perft 1 24
 perft 2 591
 perft 3 15178
@@ -7742,7 +7742,7 @@ perft 5 10251465
 perft 6 263574861
 
 id 860
-epd rknbrnb1/p1pppp1p/1p6/3N2p1/P3q1P1/8/1PPPPP1P/RKNBR1BQ w EAea - 1 9
+epd rknbrnb1/p1pppp1p/1p6/3N2p1/P3q1P1/8/1PPPPP1P/RKNBR1BQ w EAea -
 perft 1 28
 perft 2 948
 perft 3 27343
@@ -7751,7 +7751,7 @@ perft 5 26241141
 perft 6 812343987
 
 id 861
-epd rknrn1b1/ppppppqp/8/6p1/2P5/2P1BP2/PP2P1PP/RKNRNB1Q w DAda - 1 9
+epd rknrn1b1/ppppppqp/8/6p1/2P5/2P1BP2/PP2P1PP/RKNRNB1Q w DAda -
 perft 1 31
 perft 2 807
 perft 3 24360
@@ -7760,7 +7760,7 @@ perft 5 20455205
 perft 6 588518645
 
 id 862
-epd 1k1rnqbb/npppppp1/r7/p2B3p/5P2/1N4P1/PPPPP2P/RK1RNQB1 w DAd - 0 9
+epd 1k1rnqbb/npppppp1/r7/p2B3p/5P2/1N4P1/PPPPP2P/RK1RNQB1 w DAd -
 perft 1 40
 perft 2 1122
 perft 3 44297
@@ -7769,7 +7769,7 @@ perft 5 48711073
 perft 6 1412437357
 
 id 863
-epd bbqr1rkn/pp1ppppp/8/2p5/1P2P1n1/7N/P1PP1P1P/BBQRKR1N w FD - 0 9
+epd bbqr1rkn/pp1ppppp/8/2p5/1P2P1n1/7N/P1PP1P1P/BBQRKR1N w FD -
 perft 1 26
 perft 2 841
 perft 3 22986
@@ -7778,7 +7778,7 @@ perft 5 21328001
 perft 6 705170410
 
 id 864
-epd bqkr1rnn/1ppp1ppp/p4b2/4p3/P7/3PP2N/1PP2PPP/BQRBKR1N w FC - 3 9
+epd bqkr1rnn/1ppp1ppp/p4b2/4p3/P7/3PP2N/1PP2PPP/BQRBKR1N w FC -
 perft 1 24
 perft 2 500
 perft 3 12802
@@ -7787,7 +7787,7 @@ perft 5 7928916
 perft 6 197806842
 
 id 865
-epd bqrkrbnn/1pp1ppp1/8/p6p/3p4/P3P2P/QPPP1PP1/B1RKRBNN w ECec - 0 9
+epd bqrkrbnn/1pp1ppp1/8/p6p/3p4/P3P2P/QPPP1PP1/B1RKRBNN w ECec -
 perft 1 31
 perft 2 592
 perft 3 18585
@@ -7796,7 +7796,7 @@ perft 5 12607528
 perft 6 298629240
 
 id 866
-epd bqkrrnnb/2p1pppp/p7/1P1p4/8/2R3P1/PP1PPP1P/BQ1KRNNB w E - 0 9
+epd bqkrrnnb/2p1pppp/p7/1P1p4/8/2R3P1/PP1PPP1P/BQ1KRNNB w E -
 perft 1 42
 perft 2 1124
 perft 3 45187
@@ -7805,7 +7805,7 @@ perft 5 50052573
 perft 6 1483524894
 
 id 867
-epd qbbrkrn1/p1pppn1p/8/1p3Pp1/2P5/8/PP1PPP1P/QBBRKRNN w FDfd - 0 9
+epd qbbrkrn1/p1pppn1p/8/1p3Pp1/2P5/8/PP1PPP1P/QBBRKRNN w FDfd -
 perft 1 21
 perft 2 577
 perft 3 13244
@@ -7814,7 +7814,7 @@ perft 5 9683808
 perft 6 300294295
 
 id 868
-epd qrbbkrnn/pp1p2pp/4p3/5p2/2p2P1P/2P5/PP1PP1P1/QRBBKRNN w FBfb - 0 9
+epd qrbbkrnn/pp1p2pp/4p3/5p2/2p2P1P/2P5/PP1PP1P1/QRBBKRNN w FBfb -
 perft 1 21
 perft 2 571
 perft 3 12736
@@ -7823,7 +7823,7 @@ perft 5 8239872
 perft 6 228837930
 
 id 869
-epd qrbkrbn1/1pp1pppp/p2p4/8/5PPn/2P5/PP1PP3/QRBKRBNN w EBeb - 0 9
+epd qrbkrbn1/1pp1pppp/p2p4/8/5PPn/2P5/PP1PP3/QRBKRBNN w EBeb -
 perft 1 18
 perft 2 466
 perft 3 9443
@@ -7832,7 +7832,7 @@ perft 5 5679073
 perft 6 162883949
 
 id 870
-epd qrb1rnnb/pp1p1ppp/2pk4/4p3/1P2P3/1R6/P1PP1PPP/Q1BKRNNB w E - 4 9
+epd qrb1rnnb/pp1p1ppp/2pk4/4p3/1P2P3/1R6/P1PP1PPP/Q1BKRNNB w E -
 perft 1 37
 perft 2 760
 perft 3 26863
@@ -7841,7 +7841,7 @@ perft 5 19486022
 perft 6 421740856
 
 id 871
-epd qbrkbrn1/p1pppp1p/6n1/1p4p1/1P6/5P2/P1PPPBPP/QBRK1RNN w FCfc - 1 9
+epd qbrkbrn1/p1pppp1p/6n1/1p4p1/1P6/5P2/P1PPPBPP/QBRK1RNN w FCfc -
 perft 1 33
 perft 2 824
 perft 3 27385
@@ -7850,7 +7850,7 @@ perft 5 25176664
 perft 6 734656217
 
 id 872
-epd qrkbbr2/2pppppp/5nn1/pp1Q4/P7/3P4/1PP1PPPP/1RKBBRNN w FBfb - 0 9
+epd qrkbbr2/2pppppp/5nn1/pp1Q4/P7/3P4/1PP1PPPP/1RKBBRNN w FBfb -
 perft 1 42
 perft 2 1147
 perft 3 44012
@@ -7859,7 +7859,7 @@ perft 5 48216013
 perft 6 1522548864
 
 id 873
-epd qrkrbbnn/pp2pp2/2pp2pp/1B6/P7/4P3/1PPP1PPP/QRKRB1NN w DBdb - 0 9
+epd qrkrbbnn/pp2pp2/2pp2pp/1B6/P7/4P3/1PPP1PPP/QRKRB1NN w DBdb -
 perft 1 26
 perft 2 464
 perft 3 12653
@@ -7868,7 +7868,7 @@ perft 5 6928220
 perft 6 142507795
 
 id 874
-epd qrkrbnnb/p1pp1pp1/1p5p/4p3/1P6/6PN/PKPPPP1P/QR1RBN1B w db - 0 9
+epd qrkrbnnb/p1pp1pp1/1p5p/4p3/1P6/6PN/PKPPPP1P/QR1RBN1B w db -
 perft 1 29
 perft 2 705
 perft 3 20000
@@ -7877,7 +7877,7 @@ perft 5 15055365
 perft 6 419552571
 
 id 875
-epd qbrkr1bn/p1p1pp1p/1p1p2n1/6p1/3P1P2/4P3/PPP3PP/QBKRRNBN w ec - 2 9
+epd qbrkr1bn/p1p1pp1p/1p1p2n1/6p1/3P1P2/4P3/PPP3PP/QBKRRNBN w ec -
 perft 1 23
 perft 2 613
 perft 3 14835
@@ -7886,7 +7886,7 @@ perft 5 10747407
 perft 6 323905533
 
 id 876
-epd qrk1rnb1/p1pp1ppp/1p2Bbn1/8/4P3/6P1/PPPP1P1P/QRK1RNBN w EBeb - 1 9
+epd qrk1rnb1/p1pp1ppp/1p2Bbn1/8/4P3/6P1/PPPP1P1P/QRK1RNBN w EBeb -
 perft 1 28
 perft 2 927
 perft 3 24887
@@ -7895,7 +7895,7 @@ perft 5 23063284
 perft 6 807913585
 
 id 877
-epd 1qkrnbbn/1rpppppp/pp6/5N2/P4P2/8/1PPPP1PP/QRKRNBB1 w DBd - 3 9
+epd 1qkrnbbn/1rpppppp/pp6/5N2/P4P2/8/1PPPP1PP/QRKRNBB1 w DBd -
 perft 1 30
 perft 2 542
 perft 3 16646
@@ -7904,7 +7904,7 @@ perft 5 10976745
 perft 6 251694423
 
 id 878
-epd qrkr2bb/pppppppp/8/1n2n3/1N5P/1P6/P1PPPPP1/QRKR1NBB w DBdb - 1 9
+epd qrkr2bb/pppppppp/8/1n2n3/1N5P/1P6/P1PPPPP1/QRKR1NBB w DBdb -
 perft 1 28
 perft 2 719
 perft 3 21048
@@ -7913,7 +7913,7 @@ perft 5 17351761
 perft 6 479400272
 
 id 879
-epd bbrqkrnn/3ppppp/8/ppp5/6P1/4P2N/PPPPKP1P/BBRQ1R1N w fc - 0 9
+epd bbrqkrnn/3ppppp/8/ppp5/6P1/4P2N/PPPPKP1P/BBRQ1R1N w fc -
 perft 1 21
 perft 2 704
 perft 3 16119
@@ -7922,7 +7922,7 @@ perft 5 13676371
 perft 6 470796854
 
 id 880
-epd brqbkrnn/1pp2p1p/3pp1p1/p5N1/8/1P6/P1PPPPPP/BRQBK1RN w Bfb - 0 9
+epd brqbkrnn/1pp2p1p/3pp1p1/p5N1/8/1P6/P1PPPPPP/BRQBK1RN w Bfb -
 perft 1 34
 perft 2 688
 perft 3 22827
@@ -7931,7 +7931,7 @@ perft 5 16639723
 perft 6 402140795
 
 id 881
-epd br1krb1n/2qppppp/pp3n2/8/1P4P1/8/P1PPPP1P/1RQKRBNN w EBeb - 0 9
+epd br1krb1n/2qppppp/pp3n2/8/1P4P1/8/P1PPPP1P/1RQKRBNN w EBeb -
 perft 1 24
 perft 2 945
 perft 3 23943
@@ -7940,7 +7940,7 @@ perft 5 25019636
 perft 6 959651619
 
 id 882
-epd brqkr1nb/2ppp1pp/1p2np2/p7/2P1PN2/8/PP1P1PPP/BRQKRN1B w EBeb - 0 9
+epd brqkr1nb/2ppp1pp/1p2np2/p7/2P1PN2/8/PP1P1PPP/BRQKRN1B w EBeb -
 perft 1 28
 perft 2 675
 perft 3 19728
@@ -7949,7 +7949,7 @@ perft 5 15516491
 perft 6 417396563
 
 id 883
-epd rbbqkrnn/3pppp1/p7/1pp4p/2P1P2P/8/PP1P1PP1/RBBQKRNN w FAfa - 0 9
+epd rbbqkrnn/3pppp1/p7/1pp4p/2P1P2P/8/PP1P1PP1/RBBQKRNN w FAfa -
 perft 1 26
 perft 2 671
 perft 3 18164
@@ -7958,7 +7958,7 @@ perft 5 14072641
 perft 6 404960259
 
 id 884
-epd rqbbkr1n/pp1p1p1p/4pn2/2p3p1/4P1P1/3P3P/PPP2P2/RQBBKRNN w FAfa - 0 9
+epd rqbbkr1n/pp1p1p1p/4pn2/2p3p1/4P1P1/3P3P/PPP2P2/RQBBKRNN w FAfa -
 perft 1 22
 perft 2 633
 perft 3 14629
@@ -7967,7 +7967,7 @@ perft 5 10776416
 perft 6 335689685
 
 id 885
-epd rqbkrbnn/p1ppp3/1p3pp1/7p/3P4/P1P5/1PQ1PPPP/R1BKRBNN w EAea - 0 9
+epd rqbkrbnn/p1ppp3/1p3pp1/7p/3P4/P1P5/1PQ1PPPP/R1BKRBNN w EAea -
 perft 1 32
 perft 2 607
 perft 3 20339
@@ -7976,7 +7976,7 @@ perft 5 15586203
 perft 6 383515709
 
 id 886
-epd rqbkrnn1/pp2ppbp/3p4/2p3p1/2P5/1P3N1P/P2PPPP1/RQBKRN1B w EAea - 1 9
+epd rqbkrnn1/pp2ppbp/3p4/2p3p1/2P5/1P3N1P/P2PPPP1/RQBKRN1B w EAea -
 perft 1 29
 perft 2 943
 perft 3 28732
@@ -7985,7 +7985,7 @@ perft 5 28761841
 perft 6 907579129
 
 id 887
-epd rbqkb1nn/1ppppr1p/p5p1/5p2/1P6/2P4P/P1KPPPP1/RBQ1BRNN w a - 1 9
+epd rbqkb1nn/1ppppr1p/p5p1/5p2/1P6/2P4P/P1KPPPP1/RBQ1BRNN w a -
 perft 1 22
 perft 2 441
 perft 3 10403
@@ -7994,7 +7994,7 @@ perft 5 5784206
 perft 6 140934555
 
 id 888
-epd rqkb1rnn/1pp1pp1p/p5p1/1b1p4/3P4/P5P1/RPP1PP1P/1QKBBRNN w Ffa - 1 9
+epd rqkb1rnn/1pp1pp1p/p5p1/1b1p4/3P4/P5P1/RPP1PP1P/1QKBBRNN w Ffa -
 perft 1 21
 perft 2 505
 perft 3 11592
@@ -8003,7 +8003,7 @@ perft 5 7147063
 perft 6 188559137
 
 id 889
-epd rq1rbbnn/pkp1ppp1/3p3p/1p2N1P1/8/8/PPPPPP1P/RQKRBB1N w DA - 0 9
+epd rq1rbbnn/pkp1ppp1/3p3p/1p2N1P1/8/8/PPPPPP1P/RQKRBB1N w DA -
 perft 1 27
 perft 2 608
 perft 3 16419
@@ -8012,7 +8012,7 @@ perft 5 10808908
 perft 6 268393274
 
 id 890
-epd rqkrb2b/p2ppppp/2p3nn/1p6/5P2/PP1P4/2P1P1PP/RQKRBNNB w DAda - 1 9
+epd rqkrb2b/p2ppppp/2p3nn/1p6/5P2/PP1P4/2P1P1PP/RQKRBNNB w DAda -
 perft 1 30
 perft 2 749
 perft 3 21563
@@ -8021,7 +8021,7 @@ perft 5 16916813
 perft 6 485406712
 
 id 891
-epd rbqkr1bn/pp1ppp2/2p1n2p/6p1/8/4BPNP/PPPPP1P1/RBQKRN2 w EAea - 0 9
+epd rbqkr1bn/pp1ppp2/2p1n2p/6p1/8/4BPNP/PPPPP1P1/RBQKRN2 w EAea -
 perft 1 23
 perft 2 600
 perft 3 15082
@@ -8030,7 +8030,7 @@ perft 5 11041820
 perft 6 314327867
 
 id 892
-epd rqkbrnb1/2ppp1pp/pp3pn1/8/5P2/B2P4/PPP1P1PP/RQKBRN1N w EAea - 2 9
+epd rqkbrnb1/2ppp1pp/pp3pn1/8/5P2/B2P4/PPP1P1PP/RQKBRN1N w EAea -
 perft 1 22
 perft 2 569
 perft 3 13541
@@ -8039,7 +8039,7 @@ perft 5 9395816
 perft 6 269460607
 
 id 893
-epd rqkrnbb1/p1p1pppp/1p4n1/3p4/7P/P3P3/1PPPBPP1/RQKRN1BN w DAda - 0 9
+epd rqkrnbb1/p1p1pppp/1p4n1/3p4/7P/P3P3/1PPPBPP1/RQKRN1BN w DAda -
 perft 1 27
 perft 2 579
 perft 3 15565
@@ -8048,7 +8048,7 @@ perft 5 10238486
 perft 6 266047417
 
 id 894
-epd rqkrn1bb/p1ppp1pp/4n3/1p6/6p1/4N3/PPPPPPPP/RQKR2BB w DAda - 0 9
+epd rqkrn1bb/p1ppp1pp/4n3/1p6/6p1/4N3/PPPPPPPP/RQKR2BB w DAda -
 perft 1 20
 perft 2 462
 perft 3 10234
@@ -8057,7 +8057,7 @@ perft 5 6563859
 perft 6 193376359
 
 id 895
-epd bbrkqr2/pppp1ppp/6nn/8/2P1p3/3PP2N/PP3PPP/BBRKQR1N w FCfc - 0 9
+epd bbrkqr2/pppp1ppp/6nn/8/2P1p3/3PP2N/PP3PPP/BBRKQR1N w FCfc -
 perft 1 28
 perft 2 724
 perft 3 21688
@@ -8066,7 +8066,7 @@ perft 5 19318355
 perft 6 593204629
 
 id 896
-epd brk1qrnn/1pppbppp/4p3/8/1p6/P1P4P/3PPPP1/BRKBQRNN w FBfb - 1 9
+epd brk1qrnn/1pppbppp/4p3/8/1p6/P1P4P/3PPPP1/BRKBQRNN w FBfb -
 perft 1 24
 perft 2 662
 perft 3 16920
@@ -8075,7 +8075,7 @@ perft 5 12610387
 perft 6 355969349
 
 id 897
-epd 1r1qrbnn/p1pkpppp/1p1p4/8/3P1PP1/P4b2/1PP1P2P/BRKQRBNN w EB - 1 9
+epd 1r1qrbnn/p1pkpppp/1p1p4/8/3P1PP1/P4b2/1PP1P2P/BRKQRBNN w EB -
 perft 1 22
 perft 2 696
 perft 3 17021
@@ -8084,7 +8084,7 @@ perft 5 13697382
 perft 6 401903030
 
 id 898
-epd 1rkqrnnb/p1p1p1pp/1p1p4/3b1p1N/4P3/5N2/PPPP1PPP/BRKQR2B w EBeb - 1 9
+epd 1rkqrnnb/p1p1p1pp/1p1p4/3b1p1N/4P3/5N2/PPPP1PPP/BRKQR2B w EBeb -
 perft 1 29
 perft 2 887
 perft 3 27035
@@ -8093,7 +8093,7 @@ perft 5 26051242
 perft 6 791718847
 
 id 899
-epd rbbkq1rn/pppppppp/7n/8/P7/3P3P/1PPKPPP1/RBB1QRNN w a - 3 9
+epd rbbkq1rn/pppppppp/7n/8/P7/3P3P/1PPKPPP1/RBB1QRNN w a -
 perft 1 22
 perft 2 417
 perft 3 9900
@@ -8102,7 +8102,7 @@ perft 5 5505063
 perft 6 134818483
 
 id 900
-epd rkbbqr1n/1p1pppp1/2p2n2/p4NBp/8/3P4/PPP1PPPP/RK1BQRN1 w FAfa - 0 9
+epd rkbbqr1n/1p1pppp1/2p2n2/p4NBp/8/3P4/PPP1PPPP/RK1BQRN1 w FAfa -
 perft 1 37
 perft 2 832
 perft 3 30533
@@ -8111,7 +8111,7 @@ perft 5 26676373
 perft 6 673756141
 
 id 901
-epd rkbqrb1n/3pBppp/ppp2n2/8/8/P2P4/1PP1PPPP/RK1QRBNN w EAea - 0 9
+epd rkbqrb1n/3pBppp/ppp2n2/8/8/P2P4/1PP1PPPP/RK1QRBNN w EAea -
 perft 1 28
 perft 2 685
 perft 3 19718
@@ -8120,7 +8120,7 @@ perft 5 16033316
 perft 6 482288814
 
 id 902
-epd rkb1rn1b/ppppqppp/4p3/8/1P2n1P1/5Q2/P1PP1P1P/RKB1RNNB w EAea - 2 9
+epd rkb1rn1b/ppppqppp/4p3/8/1P2n1P1/5Q2/P1PP1P1P/RKB1RNNB w EAea -
 perft 1 37
 perft 2 1158
 perft 3 40114
@@ -8129,7 +8129,7 @@ perft 5 44672979
 perft 6 1389312729
 
 id 903
-epd r1kqbrnn/pp1pp1p1/7p/2P2p2/5b2/3P4/P1P1P1PP/RBKQBRNN w FAfa - 0 9
+epd r1kqbrnn/pp1pp1p1/7p/2P2p2/5b2/3P4/P1P1P1PP/RBKQBRNN w FAfa -
 perft 1 5
 perft 2 161
 perft 3 4745
@@ -8138,7 +8138,7 @@ perft 5 4734999
 perft 6 157499039
 
 id 904
-epd rkqbbr1n/ppp1ppp1/8/Q2p3p/4n3/3P1P2/PPP1P1PP/RK1BBRNN w FAfa - 2 9
+epd rkqbbr1n/ppp1ppp1/8/Q2p3p/4n3/3P1P2/PPP1P1PP/RK1BBRNN w FAfa -
 perft 1 38
 perft 2 1144
 perft 3 40433
@@ -8147,7 +8147,7 @@ perft 5 43832975
 perft 6 1366087771
 
 id 905
-epd rkqrbbn1/p1ppppp1/Bp5p/8/P6n/2P1P3/1P1P1PPP/RKQRB1NN w DAda - 0 9
+epd rkqrbbn1/p1ppppp1/Bp5p/8/P6n/2P1P3/1P1P1PPP/RKQRB1NN w DAda -
 perft 1 28
 perft 2 551
 perft 3 15488
@@ -8156,7 +8156,7 @@ perft 5 9944107
 perft 6 251179183
 
 id 906
-epd rkqrb1nb/1ppp1ppp/p7/4p3/5n2/3P2N1/PPPQPPPP/RK1RB1NB w DAda - 0 9
+epd rkqrb1nb/1ppp1ppp/p7/4p3/5n2/3P2N1/PPPQPPPP/RK1RB1NB w DAda -
 perft 1 26
 perft 2 690
 perft 3 19877
@@ -8165,7 +8165,7 @@ perft 5 15965907
 perft 6 418191735
 
 id 907
-epd rbkqrnbn/pppp1p2/4p1p1/7p/7P/P2P4/BPP1PPP1/R1KQRNBN w EAea - 0 9
+epd rbkqrnbn/pppp1p2/4p1p1/7p/7P/P2P4/BPP1PPP1/R1KQRNBN w EAea -
 perft 1 27
 perft 2 515
 perft 3 13992
@@ -8174,7 +8174,7 @@ perft 5 8792550
 perft 6 218658292
 
 id 908
-epd rkqbrnbn/pp1ppp2/8/2p3p1/P1P4p/5P2/1PKPP1PP/R1QBRNBN w ea - 0 9
+epd rkqbrnbn/pp1ppp2/8/2p3p1/P1P4p/5P2/1PKPP1PP/R1QBRNBN w ea -
 perft 1 27
 perft 2 627
 perft 3 16843
@@ -8183,7 +8183,7 @@ perft 5 11978698
 perft 6 328434174
 
 id 909
-epd rkqrnbbn/1p2pp1p/3p2p1/p1p5/P5PP/3N4/1PPPPP2/RKQR1BBN w DAda - 0 9
+epd rkqrnbbn/1p2pp1p/3p2p1/p1p5/P5PP/3N4/1PPPPP2/RKQR1BBN w DAda -
 perft 1 23
 perft 2 624
 perft 3 15512
@@ -8192,7 +8192,7 @@ perft 5 11960861
 perft 6 367311176
 
 id 910
-epd rk2rnbb/ppqppppp/2pn4/8/1P3P2/6P1/P1PPP1NP/RKQR1NBB w DAa - 1 9
+epd rk2rnbb/ppqppppp/2pn4/8/1P3P2/6P1/P1PPP1NP/RKQR1NBB w DAa -
 perft 1 27
 perft 2 727
 perft 3 20206
@@ -8201,7 +8201,7 @@ perft 5 16633696
 perft 6 505212747
 
 id 911
-epd b1krrqnn/pp1ppp1p/2p3p1/8/P3Pb1P/1P6/2PP1PP1/BBRKRQNN w EC - 0 9
+epd b1krrqnn/pp1ppp1p/2p3p1/8/P3Pb1P/1P6/2PP1PP1/BBRKRQNN w EC -
 perft 1 32
 perft 2 943
 perft 3 30759
@@ -8210,7 +8210,7 @@ perft 5 28672582
 perft 6 800922511
 
 id 912
-epd 1rkbrqnn/p1pp1ppp/1p6/8/P2Pp3/8/1PPKPPQP/BR1BR1NN w eb - 0 9
+epd 1rkbrqnn/p1pp1ppp/1p6/8/P2Pp3/8/1PPKPPQP/BR1BR1NN w eb -
 perft 1 28
 perft 2 916
 perft 3 24892
@@ -8219,7 +8219,7 @@ perft 5 22840279
 perft 6 759318058
 
 id 913
-epd brkrqb1n/1pppp1pp/p7/3n1p2/P5P1/3PP3/1PP2P1P/BRKRQBNN w DBdb - 0 9
+epd brkrqb1n/1pppp1pp/p7/3n1p2/P5P1/3PP3/1PP2P1P/BRKRQBNN w DBdb -
 perft 1 27
 perft 2 669
 perft 3 18682
@@ -8228,7 +8228,7 @@ perft 5 13956472
 perft 6 380267099
 
 id 914
-epd brkrqnnb/3pppp1/1p6/p1p4p/2P3P1/6N1/PP1PPP1P/BRKRQ1NB w DBdb - 0 9
+epd brkrqnnb/3pppp1/1p6/p1p4p/2P3P1/6N1/PP1PPP1P/BRKRQ1NB w DBdb -
 perft 1 29
 perft 2 699
 perft 3 20042
@@ -8237,7 +8237,7 @@ perft 5 15093909
 perft 6 406594531
 
 id 915
-epd r1bkrq1n/pp2pppp/3b1n2/2pp2B1/6P1/3P1P2/PPP1P2P/RB1KRQNN w EAea - 2 9
+epd r1bkrq1n/pp2pppp/3b1n2/2pp2B1/6P1/3P1P2/PPP1P2P/RB1KRQNN w EAea -
 perft 1 27
 perft 2 835
 perft 3 22848
@@ -8246,7 +8246,7 @@ perft 5 19867800
 perft 6 631209313
 
 id 916
-epd rk1brq1n/p1p1pppp/3p1n2/1p3b2/4P3/2NQ4/PPPP1PPP/RKBBR2N w EAea - 4 9
+epd rk1brq1n/p1p1pppp/3p1n2/1p3b2/4P3/2NQ4/PPPP1PPP/RKBBR2N w EAea -
 perft 1 36
 perft 2 1004
 perft 3 35774
@@ -8255,7 +8255,7 @@ perft 5 35143142
 perft 6 966310885
 
 id 917
-epd rkbrqbnn/1p2ppp1/B1p5/p2p3p/4P2P/8/PPPP1PP1/RKBRQ1NN w DAda - 0 9
+epd rkbrqbnn/1p2ppp1/B1p5/p2p3p/4P2P/8/PPPP1PP1/RKBRQ1NN w DAda -
 perft 1 27
 perft 2 748
 perft 3 21005
@@ -8264,7 +8264,7 @@ perft 5 17597073
 perft 6 515304215
 
 id 918
-epd rkbrqn1b/pp1pp1pp/2p2p2/5n2/8/2P2P2/PP1PP1PP/RKBRQ1NB w DAda - 0 9
+epd rkbrqn1b/pp1pp1pp/2p2p2/5n2/8/2P2P2/PP1PP1PP/RKBRQ1NB w DAda -
 perft 1 20
 perft 2 479
 perft 3 10485
@@ -8273,7 +8273,7 @@ perft 5 6253775
 perft 6 167767913
 
 id 919
-epd rbkrbnn1/ppppp1pp/5q2/5p2/5P2/P3P2N/1PPP2PP/RBKRBQ1N w DAda - 3 9
+epd rbkrbnn1/ppppp1pp/5q2/5p2/5P2/P3P2N/1PPP2PP/RBKRBQ1N w DAda -
 perft 1 28
 perft 2 947
 perft 3 26900
@@ -8282,7 +8282,7 @@ perft 5 26007841
 perft 6 838704143
 
 id 920
-epd rkr1bqnn/1ppp1p1p/p5p1/4p3/3PP2b/2P2P2/PP4PP/RKRBBQNN w CAca - 0 9
+epd rkr1bqnn/1ppp1p1p/p5p1/4p3/3PP2b/2P2P2/PP4PP/RKRBBQNN w CAca -
 perft 1 31
 perft 2 1004
 perft 3 32006
@@ -8291,7 +8291,7 @@ perft 5 32688124
 perft 6 1024529879
 
 id 921
-epd rkrqbbnn/pppp3p/8/4ppp1/1PP4P/8/P2PPPP1/RKRQBBNN w CAca - 0 9
+epd rkrqbbnn/pppp3p/8/4ppp1/1PP4P/8/P2PPPP1/RKRQBBNN w CAca -
 perft 1 24
 perft 2 717
 perft 3 18834
@@ -8300,7 +8300,7 @@ perft 5 15844525
 perft 6 484884485
 
 id 922
-epd rkrqbn1b/pppp2pp/8/4pp2/1P1P2n1/5N2/P1P1PP1P/RKRQBN1B w CAca - 0 9
+epd rkrqbn1b/pppp2pp/8/4pp2/1P1P2n1/5N2/P1P1PP1P/RKRQBN1B w CAca -
 perft 1 25
 perft 2 718
 perft 3 19654
@@ -8309,7 +8309,7 @@ perft 5 17257753
 perft 6 537354146
 
 id 923
-epd rbkrqnbn/p1p1ppp1/1p1p4/8/3PP2p/2PB4/PP3PPP/R1KRQNBN w DAda - 0 9
+epd rbkrqnbn/p1p1ppp1/1p1p4/8/3PP2p/2PB4/PP3PPP/R1KRQNBN w DAda -
 perft 1 30
 perft 2 754
 perft 3 23298
@@ -8318,7 +8318,7 @@ perft 5 19338246
 perft 6 532603566
 
 id 924
-epd 1krbqnbn/1p2pppp/r1pp4/p7/8/1P1P2PP/P1P1PP2/RKRBQNBN w CAc - 0 9
+epd 1krbqnbn/1p2pppp/r1pp4/p7/8/1P1P2PP/P1P1PP2/RKRBQNBN w CAc -
 perft 1 21
 perft 2 566
 perft 3 13519
@@ -8327,7 +8327,7 @@ perft 5 9700847
 perft 6 279864836
 
 id 925
-epd rkrq1b2/pppppppb/3n2np/2N5/4P3/7P/PPPP1PP1/RKRQ1BBN w CAca - 1 9
+epd rkrq1b2/pppppppb/3n2np/2N5/4P3/7P/PPPP1PP1/RKRQ1BBN w CAca -
 perft 1 33
 perft 2 654
 perft 3 21708
@@ -8336,7 +8336,7 @@ perft 5 15990307
 perft 6 382218272
 
 id 926
-epd rkr1nnbb/ppp2p1p/3p1qp1/4p3/P5P1/3PN3/1PP1PP1P/RKRQN1BB w CAca - 1 9
+epd rkr1nnbb/ppp2p1p/3p1qp1/4p3/P5P1/3PN3/1PP1PP1P/RKRQN1BB w CAca -
 perft 1 28
 perft 2 715
 perft 3 20361
@@ -8345,7 +8345,7 @@ perft 5 16303092
 perft 6 468666425
 
 id 927
-epd bbrkrnqn/1p1ppppp/8/8/p2pP3/PP6/2P2PPP/BBRKRNQN w ECec - 0 9
+epd bbrkrnqn/1p1ppppp/8/8/p2pP3/PP6/2P2PPP/BBRKRNQN w ECec -
 perft 1 24
 perft 2 757
 perft 3 19067
@@ -8354,7 +8354,7 @@ perft 5 15957628
 perft 6 509307623
 
 id 928
-epd brkbrnqn/ppp2p2/4p3/P2p2pp/6P1/5P2/1PPPP2P/BRKBRNQN w EBeb - 0 9
+epd brkbrnqn/ppp2p2/4p3/P2p2pp/6P1/5P2/1PPPP2P/BRKBRNQN w EBeb -
 perft 1 25
 perft 2 548
 perft 3 14563
@@ -8363,7 +8363,7 @@ perft 5 9688526
 perft 6 247750144
 
 id 929
-epd brkr1bqn/1pppppp1/3n3p/1p6/P7/4P1P1/1PPP1P1P/BRKRN1QN w DBdb - 0 9
+epd brkr1bqn/1pppppp1/3n3p/1p6/P7/4P1P1/1PPP1P1P/BRKRN1QN w DBdb -
 perft 1 19
 perft 2 359
 perft 3 7430
@@ -8372,7 +8372,7 @@ perft 5 3521652
 perft 6 81787718
 
 id 930
-epd brkr1qnb/pppp2pp/2B1p3/5p2/2n5/6PP/PPPPPPN1/BRKR1QN1 w DBdb - 1 9
+epd brkr1qnb/pppp2pp/2B1p3/5p2/2n5/6PP/PPPPPPN1/BRKR1QN1 w DBdb -
 perft 1 27
 perft 2 854
 perft 3 23303
@@ -8381,7 +8381,7 @@ perft 5 20558538
 perft 6 667089231
 
 id 931
-epd rbbkrnqn/p1p1p1pp/8/1p1p4/1P1Pp3/6N1/P1P2PPP/RBBKRNQ1 w EAea - 0 9
+epd rbbkrnqn/p1p1p1pp/8/1p1p4/1P1Pp3/6N1/P1P2PPP/RBBKRNQ1 w EAea -
 perft 1 28
 perft 2 723
 perft 3 19844
@@ -8390,7 +8390,7 @@ perft 5 14621108
 perft 6 397454100
 
 id 932
-epd rkbbrn1n/pppppp2/5q1p/6p1/3P3P/4P3/PPP2PP1/RKBBRNQN w EAea - 1 9
+epd rkbbrn1n/pppppp2/5q1p/6p1/3P3P/4P3/PPP2PP1/RKBBRNQN w EAea -
 perft 1 25
 perft 2 741
 perft 3 19224
@@ -8399,7 +8399,7 @@ perft 5 15605840
 perft 6 485037906
 
 id 933
-epd rkbr1bq1/ppnppppp/6n1/2p5/2P1N2P/8/PP1PPPP1/RKBRNBQ1 w DAda - 3 9
+epd rkbr1bq1/ppnppppp/6n1/2p5/2P1N2P/8/PP1PPPP1/RKBRNBQ1 w DAda -
 perft 1 24
 perft 2 547
 perft 3 14359
@@ -8408,7 +8408,7 @@ perft 5 9410221
 perft 6 234041078
 
 id 934
-epd 1kbrnqnb/r1ppppp1/8/pp5p/8/1P1NP3/P1PP1PPP/RKB1RQNB w Ad - 2 9
+epd 1kbrnqnb/r1ppppp1/8/pp5p/8/1P1NP3/P1PP1PPP/RKB1RQNB w Ad -
 perft 1 26
 perft 2 618
 perft 3 17305
@@ -8417,7 +8417,7 @@ perft 5 13112297
 perft 6 357030697
 
 id 935
-epd rbkrb1qn/1pp1ppp1/3pn2p/pP6/8/4N1P1/P1PPPP1P/RBKRB1QN w DAda - 0 9
+epd rbkrb1qn/1pp1ppp1/3pn2p/pP6/8/4N1P1/P1PPPP1P/RBKRB1QN w DAda -
 perft 1 21
 perft 2 544
 perft 3 12492
@@ -8426,7 +8426,7 @@ perft 5 8381483
 perft 6 236013157
 
 id 936
-epd rkrbbnqn/ppppp3/5p2/6pp/5PBP/4P3/PPPP2P1/RKR1BNQN w CAca - 0 9
+epd rkrbbnqn/ppppp3/5p2/6pp/5PBP/4P3/PPPP2P1/RKR1BNQN w CAca -
 perft 1 30
 perft 2 891
 perft 3 25435
@@ -8435,7 +8435,7 @@ perft 5 21894752
 perft 6 669256602
 
 id 937
-epd rkr1bb1n/ppppp1pp/5p2/4n3/3QP3/5P2/RPPP2PP/1KRNBB1N w Cca - 1 9
+epd rkr1bb1n/ppppp1pp/5p2/4n3/3QP3/5P2/RPPP2PP/1KRNBB1N w Cca -
 perft 1 45
 perft 2 1172
 perft 3 51766
@@ -8444,7 +8444,7 @@ perft 5 57856784
 perft 6 1501852662
 
 id 938
-epd rkr1bqnb/pp1ppppp/8/2pN4/1P6/5N2/P1PPnPPP/RKR1BQ1B w CAca - 0 9
+epd rkr1bqnb/pp1ppppp/8/2pN4/1P6/5N2/P1PPnPPP/RKR1BQ1B w CAca -
 perft 1 28
 perft 2 730
 perft 3 20511
@@ -8453,7 +8453,7 @@ perft 5 16323242
 perft 6 463032124
 
 id 939
-epd rbkrnqb1/2ppppp1/p5np/1p6/8/3N4/PPPPPPPP/RBKRQNB1 w DAda - 2 9
+epd rbkrnqb1/2ppppp1/p5np/1p6/8/3N4/PPPPPPPP/RBKRQNB1 w DAda -
 perft 1 20
 perft 2 417
 perft 3 9159
@@ -8462,7 +8462,7 @@ perft 5 5180716
 perft 6 133936564
 
 id 940
-epd rkrbnqb1/p1pppnpp/5p2/1p6/2P5/1P1P1N2/P3PPPP/RKRB1QBN w CAca - 0 9
+epd rkrbnqb1/p1pppnpp/5p2/1p6/2P5/1P1P1N2/P3PPPP/RKRB1QBN w CAca -
 perft 1 25
 perft 2 546
 perft 3 14039
@@ -8471,7 +8471,7 @@ perft 5 8813781
 perft 6 222026485
 
 id 941
-epd rkr1qbbn/ppppppp1/4n3/7p/8/P7/KPPPPPPP/R1RNQBBN w ca - 0 9
+epd rkr1qbbn/ppppppp1/4n3/7p/8/P7/KPPPPPPP/R1RNQBBN w ca -
 perft 1 22
 perft 2 484
 perft 3 11458
@@ -8480,7 +8480,7 @@ perft 5 6633319
 perft 6 163291279
 
 id 942
-epd rkrnqnb1/1ppppp2/p5p1/7p/8/P1bPP3/1PP1QPPP/RKRN1NBB w CAca - 0 9
+epd rkrnqnb1/1ppppp2/p5p1/7p/8/P1bPP3/1PP1QPPP/RKRN1NBB w CAca -
 perft 1 22
 perft 2 636
 perft 3 15526
@@ -8489,7 +8489,7 @@ perft 5 11614241
 perft 6 331083405
 
 id 943
-epd b2krn1q/p1rppppp/1Q3n2/2p1b3/1P4P1/8/P1PPPP1P/BBRKRNN1 w ECe - 3 9
+epd b2krn1q/p1rppppp/1Q3n2/2p1b3/1P4P1/8/P1PPPP1P/BBRKRNN1 w ECe -
 perft 1 36
 perft 2 1192
 perft 3 42945
@@ -8498,7 +8498,7 @@ perft 5 50382104
 perft 6 1650202838
 
 id 944
-epd brkbrnn1/pp1pppp1/7q/2p5/6Pp/4P1NP/PPPP1P2/BRKBR1NQ w EBeb - 2 9
+epd brkbrnn1/pp1pppp1/7q/2p5/6Pp/4P1NP/PPPP1P2/BRKBR1NQ w EBeb -
 perft 1 30
 perft 2 978
 perft 3 29593
@@ -8507,7 +8507,7 @@ perft 5 29205057
 perft 6 936568065
 
 id 945
-epd brkrnb1q/pp1p1ppp/2p1p3/5n2/1P6/5N1N/P1PPPPPP/BRKR1B1Q w DBdb - 1 9
+epd brkrnb1q/pp1p1ppp/2p1p3/5n2/1P6/5N1N/P1PPPPPP/BRKR1B1Q w DBdb -
 perft 1 31
 perft 2 897
 perft 3 27830
@@ -8516,7 +8516,7 @@ perft 5 25423729
 perft 6 755334868
 
 id 946
-epd brkr1nqb/pp1p1pp1/2pn3p/P3p3/4P3/6P1/1PPP1P1P/BRKRNNQB w DBdb - 0 9
+epd brkr1nqb/pp1p1pp1/2pn3p/P3p3/4P3/6P1/1PPP1P1P/BRKRNNQB w DBdb -
 perft 1 19
 perft 2 382
 perft 3 8052
@@ -8525,7 +8525,7 @@ perft 5 4232274
 perft 6 103537333
 
 id 947
-epd r1bkrn1q/ppbppppp/5n2/2p5/3P4/P6N/1PP1PPPP/RBBKRNQ1 w EAea - 3 9
+epd r1bkrn1q/ppbppppp/5n2/2p5/3P4/P6N/1PP1PPPP/RBBKRNQ1 w EAea -
 perft 1 27
 perft 2 822
 perft 3 22551
@@ -8534,7 +8534,7 @@ perft 5 19115128
 perft 6 578210135
 
 id 948
-epd rkbbrnnq/pp2pppp/8/2pp4/P1P5/1P3P2/3PP1PP/RKBBRNNQ w EAea - 1 9
+epd rkbbrnnq/pp2pppp/8/2pp4/P1P5/1P3P2/3PP1PP/RKBBRNNQ w EAea -
 perft 1 23
 perft 2 643
 perft 3 15410
@@ -8543,7 +8543,7 @@ perft 5 11170489
 perft 6 329615708
 
 id 949
-epd rkbr1b1q/p1pppppp/1p1n4/7n/5QP1/3N4/PPPPPP1P/RKBR1BN1 w DAda - 4 9
+epd rkbr1b1q/p1pppppp/1p1n4/7n/5QP1/3N4/PPPPPP1P/RKBR1BN1 w DAda -
 perft 1 37
 perft 2 943
 perft 3 34382
@@ -8552,7 +8552,7 @@ perft 5 31568111
 perft 6 842265141
 
 id 950
-epd rkbr1nqb/pppp2np/8/4ppp1/1P6/6N1/P1PPPPPP/RKBRN1QB w DAda - 1 9
+epd rkbr1nqb/pppp2np/8/4ppp1/1P6/6N1/P1PPPPPP/RKBRN1QB w DAda -
 perft 1 23
 perft 2 574
 perft 3 13260
@@ -8561,7 +8561,7 @@ perft 5 9020291
 perft 6 261247606
 
 id 951
-epd rbkr1nnq/p1p1pp1p/1p4p1/3p4/b3P3/4N3/PPPPNPPP/RBKRB1Q1 w DAda - 0 9
+epd rbkr1nnq/p1p1pp1p/1p4p1/3p4/b3P3/4N3/PPPPNPPP/RBKRB1Q1 w DAda -
 perft 1 26
 perft 2 900
 perft 3 23414
@@ -8570,7 +8570,7 @@ perft 5 21653203
 perft 6 745802405
 
 id 952
-epd rkrbb1nq/p2pppp1/1p4n1/2p4p/3N4/4P1P1/PPPP1P1P/RKRBBN1Q w CAca - 0 9
+epd rkrbb1nq/p2pppp1/1p4n1/2p4p/3N4/4P1P1/PPPP1P1P/RKRBBN1Q w CAca -
 perft 1 32
 perft 2 697
 perft 3 22231
@@ -8579,7 +8579,7 @@ perft 5 17150175
 perft 6 441578567
 
 id 953
-epd rkrnbb1q/pp2pp1p/6pn/2pp4/2B1P2P/8/PPPP1PP1/RKRNB1NQ w CAca - 0 9
+epd rkrnbb1q/pp2pp1p/6pn/2pp4/2B1P2P/8/PPPP1PP1/RKRNB1NQ w CAca -
 perft 1 28
 perft 2 854
 perft 3 23853
@@ -8588,7 +8588,7 @@ perft 5 21823412
 perft 6 712787248
 
 id 954
-epd rk2bnqb/pprpppp1/4n2p/2p5/P7/3P2NP/1PP1PPP1/RKRNB1QB w CAa - 1 9
+epd rk2bnqb/pprpppp1/4n2p/2p5/P7/3P2NP/1PP1PPP1/RKRNB1QB w CAa -
 perft 1 26
 perft 2 596
 perft 3 16251
@@ -8597,7 +8597,7 @@ perft 5 11758184
 perft 6 323043654
 
 id 955
-epd r1krnnbq/pp1ppp1p/6p1/2p5/2P5/P3P3/Rb1P1PPP/1BKRNNBQ w Dda - 0 9
+epd r1krnnbq/pp1ppp1p/6p1/2p5/2P5/P3P3/Rb1P1PPP/1BKRNNBQ w Dda -
 perft 1 2
 perft 2 61
 perft 3 1312
@@ -8606,7 +8606,7 @@ perft 5 937188
 perft 6 28753562
 
 id 956
-epd 1krbnnbq/1pp1p1pp/r7/p2p1p2/3PP3/2P3P1/PP3P1P/RKRBNNBQ w CAc - 0 9
+epd 1krbnnbq/1pp1p1pp/r7/p2p1p2/3PP3/2P3P1/PP3P1P/RKRBNNBQ w CAc -
 perft 1 30
 perft 2 953
 perft 3 28033
@@ -8615,7 +8615,7 @@ perft 5 25531358
 perft 6 787205262
 
 id 957
-epd rkr1nbbq/2ppp1pp/1pn5/p4p2/P6P/3P4/1PP1PPPB/RKRNNB1Q w CAca - 1 9
+epd rkr1nbbq/2ppp1pp/1pn5/p4p2/P6P/3P4/1PP1PPPB/RKRNNB1Q w CAca -
 perft 1 24
 perft 2 645
 perft 3 15689
@@ -8624,7 +8624,7 @@ perft 5 11484012
 perft 6 341262639
 
 id 958
-epd rkrnnqbb/p1ppp2p/Qp6/4Pp2/5p2/8/PPPP2PP/RKRNN1BB w CAca - 0 9
+epd rkrnnqbb/p1ppp2p/Qp6/4Pp2/5p2/8/PPPP2PP/RKRNN1BB w CAca -
 perft 1 35
 perft 2 929
 perft 3 32020
@@ -8633,7 +8633,7 @@ perft 5 31272517
 perft 6 915268405
 
 id 959
-epd bbq1nr1r/pppppk1p/2n2p2/6p1/P4P2/4P1P1/1PPP3P/BBQNNRKR w HF - 1 9
+epd bbq1nr1r/pppppk1p/2n2p2/6p1/P4P2/4P1P1/1PPP3P/BBQNNRKR w HF -
 perft 1 23
 perft 2 589
 perft 3 14744

From eaa6eb3b023e92441f9de810785bb1716dd4d0b5 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 4 May 2024 18:03:34 +0200
Subject: [PATCH 172/250] Fixup invalid EPD in crazyhouse.perft file

---
 examples/perft/crazyhouse.perft | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/perft/crazyhouse.perft b/examples/perft/crazyhouse.perft
index 42ccd68a6..ef07eac04 100644
--- a/examples/perft/crazyhouse.perft
+++ b/examples/perft/crazyhouse.perft
@@ -18,7 +18,7 @@ perft 3 58057
 perft 4 2083382
 
 id zh-promoted
-epd 4k3/1Q~6/8/8/4b3/8/Kpp5/8/ b - - 0 1
+epd 4k3/1Q~6/8/8/4b3/8/Kpp5/8/ b - -
 perft 1 20
 perft 2 360
 perft 3 5445

From 122963b82e408417e2b4fd17643a61f42f4e9ae9 Mon Sep 17 00:00:00 2001
From: 3d12 <3d12@users.noreply.github.com>
Date: Thu, 16 May 2024 20:09:41 -0500
Subject: [PATCH 173/250] Add rookognition

---
 README.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.rst b/README.rst
index 7a677a451..c80957a37 100644
--- a/README.rst
+++ b/README.rst
@@ -351,6 +351,7 @@ If you like, share interesting things you are using python-chess for, for exampl
 * a `browser based PGN viewer <https://about.nmstoker.com/chess2.html>`_ written in PyScript – https://github.com/nmstoker/ChessMatchViewer
 * an accessible chessboard that allows blind and visually impaired  players  to play chess against Stockfish – https://github.com/blindpandas/chessmart
 * analyse games to extract various statistics – https://github.com/mvrozanti/chess-playground
+* a web-based chess vision exercise – https://github.com/3d12/rookognition
 
 
 Prior art

From 102542a3c07c74557038ced2086c0d9bbb813cf4 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 26 May 2024 03:46:30 -0700
Subject: [PATCH 174/250] Remove GameNodeComment class

Changes PR to a simpler change that is not backwards compatible.
---
 chess/pgn.py | 196 +++++++++++----------------------------------------
 test.py      |  66 +++++++----------
 2 files changed, 65 insertions(+), 197 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index e462a0750..b40ce257c 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -130,6 +130,10 @@ def repl(match: typing.Match[str]) -> str:
     return repl
 
 
+def _standardize_comments(comment: Union[str, list[str]]) -> list[str]:
+    return [] if not comment else [comment] if isinstance(comment, str) else comment
+
+
 TAG_ROSTER = ["Event", "Site", "Date", "Round", "White", "Black", "Result"]
 
 
@@ -184,92 +188,6 @@ def __init__(self, node: ChildNode, *, is_variation: bool = False, sidelines: bo
         self.in_variation = False
 
 
-class GameNodeComment:
-    """
-    PGN Comment Storage
-
-    A class that can hold one or more comments for a GameNode.
-    """
-
-    def __init__(self, comment: Union[str, list[str], GameNodeComment] = ""):
-        """Create a new comment."""
-        self.set(comment._comments if isinstance(comment,GameNodeComment) else comment)
-
-    def set(self, new_comment: Union[str, list[str]]) -> None:
-        """Replace the comment with a new comment or a list of comments."""
-        self._comments = new_comment if isinstance(new_comment, list) else [new_comment] if new_comment else []
-
-    def pgn_format(self) -> str:
-        """Create a string representation of the comments in PGN format."""
-        comments = map(lambda s: s.replace("{", ""), self._comments)
-        comments = map(lambda s: s.replace("}", "").strip(), comments)
-        return " ".join(f"{{ {comment} }}" for comment in comments if comment)
-
-    def remove_empty(self) -> None:
-        """Remove empty comments from the comment list."""
-        self._comments = list(filter(None, self._comments))
-
-    def append(self, new_comment: Union[str, list[str]]) -> None:
-        """Append one or more new comments to the end of the comment list."""
-        if new_comment:
-            if isinstance(new_comment, str):
-                self._comments.append(new_comment)
-            else:
-                self._comments.extend(new_comment)
-
-    def insert(self, index: int, new_comment: str) -> None:
-        """Insert a new comment before the specified index."""
-        self._comments.insert(index, new_comment)
-
-    def pop(self, index: int = -1) -> None:
-        """Delete comment at the given index (default is the last comment)."""
-        self._comments.pop(index)
-
-    def __len__(self) -> int:
-        """Get the number of comments in this node."""
-        return len(self._comments)
-
-    def __getitem__(self, index: int) -> str:
-        """Get the comment at the given index."""
-        return self._comments[index]
-
-    def __setitem__(self, index: int, new_comment: str) -> None:
-        """Change the comment at the given index."""
-        self._comments[index] = new_comment
-
-    def __iter__(self) -> Iterator[str]:
-        """Return an iterator over all comments."""
-        return iter(self._comments)
-
-    def __add__(self, other: Union[str, list[str], GameNodeComment]) -> GameNodeComment:
-        """Create a new comment set by adding two comment sets with +."""
-        if isinstance(other, GameNodeComment):
-            return GameNodeComment(self._comments + other._comments)
-        else:
-            new_node_comment = GameNodeComment(self._comments.copy())
-            new_node_comment.append(other)
-            return new_node_comment
-
-    def __eq__(self, other: object) -> bool:
-        """Check for equality between two comment sets."""
-        if isinstance(other, str):
-            return (len(self) == 1 and self[0] == other) or (not self and not other)
-        elif isinstance(other, list):
-            return self._comments == other
-        elif isinstance(other, GameNodeComment):
-            return self._comments == other._comments
-        else:
-            return False
-
-    def __repr__(self) -> str:
-        """Return a code-like representation of the class."""
-        return f"{self.__class__.__name__}({self._comments})"
-
-    def __str__(self) -> str:
-        """Return a string representation of the comments in PGN format."""
-        return self.pgn_format()
-
-
 class GameNode(abc.ABC):
     parent: Optional[GameNode]
     """The parent node or ``None`` if this is the root node of the game."""
@@ -283,45 +201,13 @@ class GameNode(abc.ABC):
     variations: List[ChildNode]
     """A list of child nodes."""
 
-    _comment: GameNodeComment
+    comments: list[str]
     """
     A comment that goes behind the move leading to this node. Comments
     that occur before any moves are assigned to the root node.
     """
 
-    @property
-    def comment(self) -> str:
-        return " ".join(self._comment)
-
-    @comment.setter
-    def comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        self._comment = GameNodeComment(new_comment)
-
-    @property
-    def comments(self) -> GameNodeComment:
-        return self._comment
-
-    @comments.setter
-    def comments(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        self._comment = GameNodeComment(new_comment)
-
-    _starting_comment: GameNodeComment
-
-    @property
-    def starting_comment(self) -> str:
-        return " ".join(self._starting_comment)
-
-    @starting_comment.setter
-    def starting_comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        self._starting_comment = GameNodeComment(new_comment)
-
-    @property
-    def starting_comments(self) -> GameNodeComment:
-        return self._starting_comment
-
-    @starting_comments.setter
-    def starting_comments(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        self._starting_comment = GameNodeComment(new_comment)
+    starting_comments: list[str]
 
     nags: Set[int]
 
@@ -329,11 +215,11 @@ def __init__(self, *, comment: Union[str, list[str]] = "") -> None:
         self.parent = None
         self.move = None
         self.variations = []
-        self.comments = GameNodeComment(comment)
+        self.comments = _standardize_comments(comment)
 
         # Deprecated: These should be properties of ChildNode, but need to
         # remain here for backwards compatibility.
-        self.starting_comments = GameNodeComment()
+        self.starting_comments = []
         self.nags = set()
 
     @abc.abstractmethod
@@ -549,7 +435,8 @@ def add_line(self, moves: Iterable[chess.Move], *, comment: Union[str, list[str]
             starting_comment = ""
 
         # Merge comment and NAGs.
-        node.comments.append(comment)
+        comments = _standardize_comments(comment)
+        node.comments.extend(comments)
         node.nags.update(nags)
 
         return node
@@ -561,7 +448,7 @@ def eval(self) -> Optional[chess.engine.PovScore]:
 
         Complexity is `O(n)`.
         """
-        match = EVAL_REGEX.search(self.comment)
+        match = EVAL_REGEX.search(" ".join(self.comments))
         if not match:
             return None
 
@@ -587,7 +474,7 @@ def eval_depth(self) -> Optional[int]:
 
         Complexity is `O(1)`.
         """
-        match = EVAL_REGEX.search(self.comment)
+        match = EVAL_REGEX.search(" ".join(self.comments))
         return int(match.group("depth")) if match and match.group("depth") else None
 
     def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int] = None) -> None:
@@ -610,7 +497,7 @@ def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int]
             if found:
                 break
 
-        self.comments.remove_empty()
+        self.comments = list(filter(None, self.comments))
 
         if not found and eval:
             self.comments.append(eval)
@@ -623,7 +510,7 @@ def arrows(self) -> List[chess.svg.Arrow]:
         Returns a list of :class:`arrows <chess.svg.Arrow>`.
         """
         arrows = []
-        for match in ARROWS_REGEX.finditer(self.comment):
+        for match in ARROWS_REGEX.finditer(" ".join(self.comments)):
             for group in match.group("arrows").split(","):
                 arrows.append(chess.svg.Arrow.from_pgn(group))
 
@@ -648,7 +535,7 @@ def set_arrows(self, arrows: Iterable[Union[chess.svg.Arrow, Tuple[Square, Squar
         for index in range(len(self.comments)):
             self.comments[index] = ARROWS_REGEX.sub(_condense_affix(""), self.comments[index])
 
-        self.comments.remove_empty()
+        self.comments = list(filter(None, self.comments))
 
         prefix = ""
         if csl:
@@ -667,7 +554,7 @@ def clock(self) -> Optional[float]:
         Returns the player's remaining time to the next time control after this
         move, in seconds.
         """
-        match = CLOCK_REGEX.search(self.comment)
+        match = CLOCK_REGEX.search(" ".join(self.comments))
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))
@@ -692,7 +579,7 @@ def set_clock(self, seconds: Optional[float]) -> None:
             if found:
                 break
 
-        self.comments.remove_empty()
+        self.comments = list(filter(None, self.comments))
 
         if not found and clk:
             self.comments.append(clk)
@@ -705,7 +592,7 @@ def emt(self) -> Optional[float]:
         Returns the player's elapsed move time use for the comment of this
         move, in seconds.
         """
-        match = EMT_REGEX.search(self.comment)
+        match = EMT_REGEX.search(" ".join(self.comments))
         if match is None:
             return None
         return int(match.group("hours")) * 3600 + int(match.group("minutes")) * 60 + float(match.group("seconds"))
@@ -730,7 +617,7 @@ def set_emt(self, seconds: Optional[float]) -> None:
             if found:
                 break
 
-        self.comments.remove_empty()
+        self.comments = list(filter(None, self.comments))
 
         if not found and emt:
             self.comments.append(emt)
@@ -789,7 +676,7 @@ class ChildNode(GameNode):
     move: chess.Move
     """The move leading to this node."""
 
-    _starting_comment: GameNodeComment
+    starting_comments: list[str]
     """
     A comment for the start of a variation. Only nodes that
     actually start a variation (:func:`~chess.pgn.GameNode.starts_variation()`
@@ -797,14 +684,6 @@ class ChildNode(GameNode):
     a starting comment.
     """
 
-    @property
-    def starting_comment(self) -> str:
-        return " ".join(self._starting_comment)
-
-    @starting_comment.setter
-    def starting_comment(self, new_comment: Union[str, list[str], GameNodeComment]) -> None:
-        self._starting_comment = GameNodeComment(new_comment)
-
     nags: Set[int]
     """
     A set of NAGs as integers. NAGs always go behind a move, so the root
@@ -818,7 +697,7 @@ def __init__(self, parent: GameNode, move: chess.Move, *, comment: Union[str, li
         self.parent.variations.append(self)
 
         self.nags.update(nags)
-        self.starting_comments = GameNodeComment(starting_comment)
+        self.starting_comments = _standardize_comments(starting_comment)
 
     def board(self) -> chess.Board:
         stack: List[chess.Move] = []
@@ -874,7 +753,7 @@ def end(self) -> ChildNode:
         return typing.cast(ChildNode, super().end())
 
     def _accept_node(self, parent_board: chess.Board, visitor: BaseVisitor[ResultT]) -> None:
-        if self.starting_comment:
+        if self.starting_comments:
             visitor.visit_comment(self.starting_comments)
 
         visitor.visit_move(parent_board, self.move)
@@ -1270,7 +1149,7 @@ def visit_board(self, board: chess.Board) -> None:
         """
         pass
 
-    def visit_comment(self, comment: GameNodeComment) -> None:
+    def visit_comment(self, comment: list[str]) -> None:
         """Called for each comment."""
         pass
 
@@ -1324,7 +1203,7 @@ def begin_game(self) -> None:
         self.game: GameT = self.Game()
 
         self.variation_stack: List[GameNode] = [self.game]
-        self.starting_comment = GameNodeComment()
+        self.starting_comments: list[str] = []
         self.in_variation = False
 
     def begin_headers(self) -> Headers:
@@ -1349,24 +1228,23 @@ def visit_result(self, result: str) -> None:
         if self.game.headers.get("Result", "*") == "*":
             self.game.headers["Result"] = result
 
-    def visit_comment(self, comment: GameNodeComment) -> None:
+    def visit_comment(self, comment: Union[str, list[str]]) -> None:
+        comments = _standardize_comments(comment)
         if self.in_variation or (self.variation_stack[-1].parent is None and self.variation_stack[-1].is_end()):
             # Add as a comment for the current node if in the middle of
             # a variation. Add as a comment for the game if the comment
             # starts before any move.
-            new_comments = self.variation_stack[-1].comments + comment
-            new_comments.remove_empty()
-            self.variation_stack[-1].comments = new_comments
+            self.variation_stack[-1].comments.extend(comments)
+            self.variation_stack[-1].comments = list(filter(None, self.variation_stack[-1].comments))
         else:
             # Otherwise, it is a starting comment.
-            new_comments = self.starting_comment + comment
-            new_comments.remove_empty()
-            self.starting_comment = new_comments
+            self.starting_comments.extend(comments)
+            self.starting_comments = list(filter(None, self.starting_comments))
 
     def visit_move(self, board: chess.Board, move: chess.Move) -> None:
         self.variation_stack[-1] = self.variation_stack[-1].add_variation(move)
-        self.variation_stack[-1].starting_comments = self.starting_comment
-        self.starting_comment = GameNodeComment()
+        self.variation_stack[-1].starting_comments = self.starting_comments
+        self.starting_comments = []
         self.in_variation = True
 
     def handle_error(self, error: Exception) -> None:
@@ -1534,9 +1412,15 @@ def end_variation(self) -> None:
             self.write_token(") ")
             self.force_movenumber = True
 
-    def visit_comment(self, comment: GameNodeComment) -> None:
+    def visit_comment(self, comment: Union[str, list[str]]) -> None:
         if self.comments and (self.variations or not self.variation_depth):
-            self.write_token(comment.pgn_format() + " ")
+            def pgn_format(comments: list[str]) -> str:
+                comments = map(lambda s: s.replace("{", ""), comments)
+                comments = map(lambda s: s.replace("}", ""), comments)
+                return " ".join(f"{{ {comment} }}" for comment in comments if comment)
+
+            comments = _standardize_comments(comment)
+            self.write_token(pgn_format(comments) + " ")
             self.force_movenumber = True
 
     def visit_nag(self, nag: int) -> None:
diff --git a/test.py b/test.py
index 4baf2dc58..92afd8de7 100755
--- a/test.py
+++ b/test.py
@@ -2083,29 +2083,29 @@ class PgnTestCase(unittest.TestCase):
 
     def test_exporter(self):
         game = chess.pgn.Game()
-        game.comment = "Test game:"
+        game.comments = ["Test game:"]
         game.headers["Result"] = "*"
         game.headers["VeryLongHeader"] = "This is a very long header, much wider than the 80 columns that PGNs are formatted with by default"
 
         e4 = game.add_variation(game.board().parse_san("e4"))
-        e4.comment = "Scandinavian Defense:"
+        e4.comments = ["Scandinavian Defense:"]
 
         e4_d5 = e4.add_variation(e4.board().parse_san("d5"))
 
         e4_h5 = e4.add_variation(e4.board().parse_san("h5"))
         e4_h5.nags.add(chess.pgn.NAG_MISTAKE)
-        e4_h5.starting_comment = "This"
-        e4_h5.comment = "is nonsense"
+        e4_h5.starting_comments = ["This"]
+        e4_h5.comments = ["is nonsense"]
 
         e4_e5 = e4.add_variation(e4.board().parse_san("e5"))
         e4_e5_Qf3 = e4_e5.add_variation(e4_e5.board().parse_san("Qf3"))
         e4_e5_Qf3.nags.add(chess.pgn.NAG_MISTAKE)
 
         e4_c5 = e4.add_variation(e4.board().parse_san("c5"))
-        e4_c5.comment = "Sicilian"
+        e4_c5.comments = ["Sicilian"]
 
         e4_d5_exd5 = e4_d5.add_main_variation(e4_d5.board().parse_san("exd5"))
-        e4_d5_exd5.comment = ["Best", "and the end of this example"]
+        e4_d5_exd5.comments = ["Best", "and the end of this example"]
 
         # Test string exporter with various options.
         exporter = chess.pgn.StringExporter(headers=False, comments=False, variations=False)
@@ -2224,26 +2224,16 @@ def test_read_game_with_multicomment_move(self):
         pgn = io.StringIO("1. e4 {A common opening} 1... e5 {A common response} {An uncommon comment}")
         game = chess.pgn.read_game(pgn)
         first_move = game.variation(0)
-        self.assertEqual(first_move.comment, "A common opening")
-        self.assertEqual(first_move.comments, "A common opening")
         self.assertEqual(first_move.comments, ["A common opening"])
         second_move = first_move.variation(0)
         self.assertEqual(second_move.comments, ["A common response", "An uncommon comment"])
         second_move.comments.pop()
         self.assertEqual(second_move.comments, ["A common response"])
-        self.assertEqual(second_move.comments, "A common response")
-        self.assertEqual(second_move.comment, "A common response")
         second_move.comments.append("A replaced comment")
         multiple_comments = ["A common response", "A replaced comment"]
         self.assertEqual(second_move.comments, multiple_comments)
-        for move_comment, test_comment in zip(second_move.comments, multiple_comments):
-            self.assertEqual(move_comment, test_comment)
-        self.assertEqual(list(second_move.comments), multiple_comments)
-        self.assertEqual(second_move.comment, " ".join(multiple_comments))
         second_move.comments.pop(0)
         self.assertEqual(second_move.comments, ["A replaced comment"])
-        self.assertEqual(second_move.comments, "A replaced comment")
-        self.assertEqual(second_move.comment, "A replaced comment")
 
     def test_comment_at_eol(self):
         pgn = io.StringIO(textwrap.dedent("""\
@@ -2259,7 +2249,7 @@ def test_comment_at_eol(self):
 
         # Make sure the comment for the second variation is there.
         self.assertIn(5, node[1].nags)
-        self.assertEqual(node[1].comment, "\n/\\ Ne7, c6")
+        self.assertEqual(node[1].comments, ["\n/\\ Ne7, c6"])
 
     def test_promotion_without_equals(self):
         # Example game from https://github.com/rozim/ChessData as originally
@@ -2347,12 +2337,12 @@ def test_variation_stack(self):
     def test_game_starting_comment(self):
         pgn = io.StringIO("{ Game starting comment } 1. d3")
         game = chess.pgn.read_game(pgn)
-        self.assertEqual(game.comment, "Game starting comment")
+        self.assertEqual(game.comments, ["Game starting comment"])
         self.assertEqual(game[0].san(), "d3")
 
         pgn = io.StringIO("{ Empty game, but has a comment }")
         game = chess.pgn.read_game(pgn)
-        self.assertEqual(game.comment, "Empty game, but has a comment")
+        self.assertEqual(game.comments, ["Empty game, but has a comment"])
 
     def test_game_starting_variation(self):
         pgn = io.StringIO(textwrap.dedent("""\
@@ -2360,17 +2350,17 @@ def test_game_starting_variation(self):
             """))
 
         game = chess.pgn.read_game(pgn)
-        self.assertEqual(game.comment, "Start of game")
+        self.assertEqual(game.comments, ["Start of game"])
 
         node = game[0]
         self.assertEqual(node.move, chess.Move.from_uci("e2e4"))
-        self.assertFalse(node.comment)
-        self.assertFalse(node.starting_comment)
+        self.assertFalse(node.comments)
+        self.assertFalse(node.starting_comments)
 
         node = game[1]
         self.assertEqual(node.move, chess.Move.from_uci("d2d4"))
-        self.assertFalse(node.comment)
-        self.assertEqual(node.starting_comment, "Start of variation")
+        self.assertFalse(node.comments)
+        self.assertEqual(node.starting_comments, ["Start of variation"])
 
     def test_annotation_symbols(self):
         pgn = io.StringIO("1. b4?! g6 2. Bb2 Nc6? 3. Bxh8!!")
@@ -2715,12 +2705,12 @@ def test_add_line(self):
         tail = game.add_line(moves, starting_comment="start", comment="end", nags=(17, 42))
 
         self.assertEqual(tail.parent.move, chess.Move.from_uci("g1f3"))
-        self.assertEqual(tail.parent.starting_comment, "start")
-        self.assertEqual(tail.parent.comment, "")
+        self.assertEqual(tail.parent.starting_comments, ["start"])
+        self.assertEqual(tail.parent.comments, [])
         self.assertEqual(len(tail.parent.nags), 0)
 
         self.assertEqual(tail.move, chess.Move.from_uci("d7d5"))
-        self.assertEqual(tail.comment, "end")
+        self.assertEqual(tail.comments, ["end"])
         self.assertIn(42, tail.nags)
 
     def test_mainline(self):
@@ -2850,12 +2840,11 @@ def test_recursion(self):
 
     def test_annotations(self):
         game = chess.pgn.Game()
-        game.comment = "foo [%bar] baz"
+        game.comments = ["foo [%bar] baz"]
 
         self.assertTrue(game.clock() is None)
         clock = 12345
         game.set_clock(clock)
-        self.assertEqual(game.comment, "foo [%bar] baz [%clk 3:25:45]")
         self.assertEqual(game.comments, ["foo [%bar] baz", "[%clk 3:25:45]"])
         self.assertEqual(game.clock(), clock)
 
@@ -2872,7 +2861,6 @@ def test_annotations(self):
         self.assertEqual(game.arrows(), [])
         game.set_arrows([(chess.A1, chess.A1), chess.svg.Arrow(chess.A1, chess.H1, color="red"), chess.svg.Arrow(chess.B1, chess.B8)])
         self.assertEqual(game.comments, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]"])
-        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45] [%eval #1,5]")
         arrows = game.arrows()
         self.assertEqual(len(arrows), 3)
         self.assertEqual(arrows[0].color, "green")
@@ -2883,21 +2871,17 @@ def test_annotations(self):
         emt = 321
         game.set_emt(emt)
         self.assertEqual(game.comments, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%eval #1,5]", "[%emt 0:05:21]"])
-        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45] [%eval #1,5] [%emt 0:05:21]")
         self.assertEqual(game.emt(), emt)
 
         game.set_eval(None)
         self.assertEqual(game.comments, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]", "[%emt 0:05:21]"])
-        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45] [%emt 0:05:21]")
 
         game.set_emt(None)
         self.assertEqual(game.comments, ["[%csl Ga1][%cal Ra1h1,Gb1b8]", "foo [%bar] baz", "[%clk 3:25:45]"])
-        self.assertEqual(game.comment, "[%csl Ga1][%cal Ra1h1,Gb1b8] foo [%bar] baz [%clk 3:25:45]")
 
         game.set_clock(None)
         game.set_arrows([])
-        self.assertEqual(game.comments, "foo [%bar] baz")
-        self.assertEqual(game.comment, "foo [%bar] baz")
+        self.assertEqual(game.comments, ["foo [%bar] baz"])
 
     def test_eval(self):
         game = chess.pgn.Game()
@@ -2907,28 +2891,28 @@ def test_eval(self):
 
     def test_float_emt(self):
         game = chess.pgn.Game()
-        game.comment = "[%emt 0:00:01.234]"
+        game.comments = ["[%emt 0:00:01.234]"]
         self.assertEqual(game.emt(), 1.234)
 
         game.set_emt(6.54321)
-        self.assertEqual(game.comment, "[%emt 0:00:06.543]")
+        self.assertEqual(game.comments, ["[%emt 0:00:06.543]"])
         self.assertEqual(game.emt(), 6.543)
 
         game.set_emt(-70)
-        self.assertEqual(game.comment, "[%emt 0:00:00]")  # Clamped
+        self.assertEqual(game.comments, ["[%emt 0:00:00]"])  # Clamped
         self.assertEqual(game.emt(), 0)
 
     def test_float_clk(self):
         game = chess.pgn.Game()
-        game.comment = "[%clk 0:00:01.234]"
+        game.comments = ["[%clk 0:00:01.234]"]
         self.assertEqual(game.clock(), 1.234)
 
         game.set_clock(6.54321)
-        self.assertEqual(game.comment, "[%clk 0:00:06.543]")
+        self.assertEqual(game.comments, ["[%clk 0:00:06.543]"])
         self.assertEqual(game.clock(), 6.543)
 
         game.set_clock(-70)
-        self.assertEqual(game.comment, "[%clk 0:00:00]")  # Clamped
+        self.assertEqual(game.comments, ["[%clk 0:00:00]"])  # Clamped
         self.assertEqual(game.clock(), 0)
 
     def test_node_turn(self):

From 52dc00154d10c230c0aa6ce13299d7a0c825f19a Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 26 May 2024 15:04:05 -0700
Subject: [PATCH 175/250] Convert map return type to list

---
 chess/pgn.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index b40ce257c..b999d79a6 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -1415,8 +1415,8 @@ def end_variation(self) -> None:
     def visit_comment(self, comment: Union[str, list[str]]) -> None:
         if self.comments and (self.variations or not self.variation_depth):
             def pgn_format(comments: list[str]) -> str:
-                comments = map(lambda s: s.replace("{", ""), comments)
-                comments = map(lambda s: s.replace("}", ""), comments)
+                comments = list(map(lambda s: s.replace("{", ""), comments))
+                comments = list(map(lambda s: s.replace("}", ""), comments))
                 return " ".join(f"{{ {comment} }}" for comment in comments if comment)
 
             comments = _standardize_comments(comment)

From 3b23452ee5728d1ec75e2cbf6f1c208e0416a9ee Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Sun, 26 May 2024 15:14:13 -0700
Subject: [PATCH 176/250] Remove tests of python list methods

---
 test.py | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/test.py b/test.py
index 92afd8de7..cf5439547 100755
--- a/test.py
+++ b/test.py
@@ -2227,13 +2227,6 @@ def test_read_game_with_multicomment_move(self):
         self.assertEqual(first_move.comments, ["A common opening"])
         second_move = first_move.variation(0)
         self.assertEqual(second_move.comments, ["A common response", "An uncommon comment"])
-        second_move.comments.pop()
-        self.assertEqual(second_move.comments, ["A common response"])
-        second_move.comments.append("A replaced comment")
-        multiple_comments = ["A common response", "A replaced comment"]
-        self.assertEqual(second_move.comments, multiple_comments)
-        second_move.comments.pop(0)
-        self.assertEqual(second_move.comments, ["A replaced comment"])
 
     def test_comment_at_eol(self):
         pgn = io.StringIO(textwrap.dedent("""\

From 3829d262c325b61b0004a314347f985008a9eb84 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 17 Jun 2024 21:18:43 +0200
Subject: [PATCH 177/250] Factor out Tablebase.add_file()

---
 chess/syzygy.py | 36 ++++++++++++++++--------------------
 1 file changed, 16 insertions(+), 20 deletions(-)

diff --git a/chess/syzygy.py b/chess/syzygy.py
index e1fe07eb7..0c7d41500 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -1511,27 +1511,23 @@ def add_directory(self, directory: str, *, load_wdl: bool = True, load_dtz: bool
 
         Returns the number of table files that were found.
         """
-        num = 0
         directory = os.path.abspath(directory)
-
-        for filename in os.listdir(directory):
-            path = os.path.join(directory, filename)
-            tablename, ext = os.path.splitext(filename)
-
-            if is_tablename(tablename, one_king=self.variant.one_king) and os.path.isfile(path):
-                if load_wdl:
-                    if ext == self.variant.tbw_suffix:
-                        num += self._open_table(self.wdl, WdlTable, path)
-                    elif "P" not in tablename and ext == self.variant.pawnless_tbw_suffix:
-                        num += self._open_table(self.wdl, WdlTable, path)
-
-                if load_dtz:
-                    if ext == self.variant.tbz_suffix:
-                        num += self._open_table(self.dtz, DtzTable, path)
-                    elif "P" not in tablename and ext == self.variant.pawnless_tbz_suffix:
-                        num += self._open_table(self.dtz, DtzTable, path)
-
-        return num
+        return sum(self.add_file(os.path.join(directory, filename), load_wdl=load_wdl, load_dtz=load_dtz) for filename in os.listdir(directory))
+
+    def add_file(self, path: str, *, load_wdl: bool = True, load_dtz: bool = True) -> int:
+        tablename, ext = os.path.splitext(os.path.basename(path))
+        if is_tablename(tablename, one_king=self.variant.one_king) and os.path.isfile(path):
+            if load_wdl:
+                if ext == self.variant.tbw_suffix:
+                    return self._open_table(self.wdl, WdlTable, path)
+                elif "P" not in tablename and ext == self.variant.pawnless_tbw_suffix:
+                    return self._open_table(self.wdl, WdlTable, path)
+            if load_dtz:
+                if ext == self.variant.tbz_suffix:
+                    return self._open_table(self.dtz, DtzTable, path)
+                elif "P" not in tablename and ext == self.variant.pawnless_tbz_suffix:
+                    return self._open_table(self.dtz, DtzTable, path)
+        return 0
 
     def probe_wdl_table(self, board: chess.Board) -> int:
         # Test for variant end.

From a41c3c88022fd97ab0eaf7b032a3158b69628b66 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 4 Jul 2024 16:41:19 +0200
Subject: [PATCH 178/250] Do not eagerly check syzygy max pieces (fixes #1093)

---
 chess/syzygy.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/syzygy.py b/chess/syzygy.py
index 0c7d41500..807b0922e 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -1546,6 +1546,8 @@ def probe_wdl_table(self, board: chess.Board) -> int:
         try:
             table = typing.cast(WdlTable, self.wdl[key])
         except KeyError:
+            if chess.popcount(board.occupied) > TBPIECES:
+                raise KeyError(f"syzygy tables support up to {TBPIECES} pieces, not {chess.popcount(board.occupied)}: {board.fen()}")
             raise MissingTableError(f"did not find wdl table {key}")
 
         self._bump_lru(table)
@@ -1558,8 +1560,6 @@ def probe_ab(self, board: chess.Board, alpha: int, beta: int, threats: bool = Fa
             raise KeyError(f"tablebase has been opened for {self.variant.uci_variant}, probed with: {board.uci_variant}")
         if board.castling_rights:
             raise KeyError(f"syzygy tables do not contain positions with castling rights: {board.fen()}")
-        if chess.popcount(board.occupied) > TBPIECES:
-            raise KeyError(f"syzygy tables support up to {TBPIECES} pieces, not {chess.popcount(board.occupied)}: {board.fen()}")
 
         # Special case: Variant with compulsory captures.
         if self.variant.captures_compulsory:

From 95803fc64a89307bfe51910f9e9349d120b81705 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 4 Jul 2024 20:58:32 +0200
Subject: [PATCH 179/250] Artificially limit syzygy ab search after relaxing
 bound

---
 chess/syzygy.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/chess/syzygy.py b/chess/syzygy.py
index 807b0922e..8ba1cbca4 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -1561,6 +1561,13 @@ def probe_ab(self, board: chess.Board, alpha: int, beta: int, threats: bool = Fa
         if board.castling_rights:
             raise KeyError(f"syzygy tables do not contain positions with castling rights: {board.fen()}")
 
+        # Probing resolves captures, so sometimes we can obtain results for
+        # positions that have more pieces than the maximum number of supported
+        # pieces. We artificially limit this to one additional level, to
+        # make sure search remains somewhat bounded.
+        if chess.popcount(board.occupied) > TBPIECES + 1:
+            raise KeyError(f"syzygy tables support up to {TBPIECES} pieces, not {chess.popcount(board.occupied)}: {board.fen()}")
+
         # Special case: Variant with compulsory captures.
         if self.variant.captures_compulsory:
             if board.is_variant_win():

From 474c87bfcccb8e2aa78a4a94414af3b747340f31 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 10 Jul 2024 18:02:09 +0200
Subject: [PATCH 180/250] Add another SAN disambiguation test
 (niklasf/shakmaty#77)

---
 test.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test.py b/test.py
index 4ca3be6c2..00d766a03 100755
--- a/test.py
+++ b/test.py
@@ -703,6 +703,11 @@ def test_san(self):
         self.assertEqual(board.san(chess.Move.from_uci("h4g6")), "Nh4g6")
         self.assertEqual(board.fen(), fen)
 
+        # Test a bug where shakmaty used overly specific disambiguation.
+        fen = "8/2KN1p2/5p2/3N1B1k/5PNp/7P/7P/8 w - -"
+        board = chess.Board(fen)
+        self.assertEqual(board.san(chess.Move.from_uci("d5f6")), "N5xf6#")
+
         # Do not disambiguate illegal alternatives.
         fen = "8/8/8/R2nkn2/8/8/2K5/8 b - - 0 1"
         board = chess.Board(fen)

From ec8ecec5c0277691ec76041e82bf13140f7f719a Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Thu, 11 Jul 2024 16:03:22 +0200
Subject: [PATCH 181/250] chess-playground discontinued

---
 README.rst | 1 -
 1 file changed, 1 deletion(-)

diff --git a/README.rst b/README.rst
index c80957a37..a6c3185c6 100644
--- a/README.rst
+++ b/README.rst
@@ -350,7 +350,6 @@ If you like, share interesting things you are using python-chess for, for exampl
 * Django Rest Framework API for multiplayer chess – https://github.com/WorkShoft/capablanca-api
 * a `browser based PGN viewer <https://about.nmstoker.com/chess2.html>`_ written in PyScript – https://github.com/nmstoker/ChessMatchViewer
 * an accessible chessboard that allows blind and visually impaired  players  to play chess against Stockfish – https://github.com/blindpandas/chessmart
-* analyse games to extract various statistics – https://github.com/mvrozanti/chess-playground
 * a web-based chess vision exercise – https://github.com/3d12/rookognition
 
 

From 63aac2ec65860a64256a190220b793e80b132b50 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 19 Jul 2024 16:31:22 +0200
Subject: [PATCH 182/250] Expose optional occupied parameter for attackers_mask
 (#1090)

---
 chess/__init__.py | 31 ++++++++++++++++++++++---------
 1 file changed, 22 insertions(+), 9 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index bed9eec5d..a90df9ef6 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -902,7 +902,9 @@ def attacks(self, square: Square) -> SquareSet:
         """
         return SquareSet(self.attacks_mask(square))
 
-    def _attackers_mask(self, color: Color, square: Square, occupied: Bitboard) -> Bitboard:
+    def attackers_mask(self, color: Color, square: Square, occupied: Optional[Bitboard] = None) -> Bitboard:
+        occupied = self.occupied if occupied is None else occupied
+
         rank_pieces = BB_RANK_MASKS[square] & occupied
         file_pieces = BB_FILE_MASKS[square] & occupied
         diag_pieces = BB_DIAG_MASKS[square] & occupied
@@ -920,27 +922,38 @@ def _attackers_mask(self, color: Color, square: Square, occupied: Bitboard) -> B
 
         return attackers & self.occupied_co[color]
 
-    def attackers_mask(self, color: Color, square: Square) -> Bitboard:
-        return self._attackers_mask(color, square, self.occupied)
-
-    def is_attacked_by(self, color: Color, square: Square) -> bool:
+    def is_attacked_by(self, color: Color, square: Square, occupied: Optional[IntoSquareSet] = None) -> bool:
         """
         Checks if the given side attacks the given square.
 
         Pinned pieces still count as attackers. Pawns that can be captured
         en passant are **not** considered attacked.
+
+        *occupied* determines which squares are considered to block attacks.
+        For example,
+        ``board.occupied ^ board.pieces_mask(chess.KING, board.turn)`` can be
+        used to consider X-ray attacks through the king.
+        Defaults to ``board.occupied`` (all pieces including the king,
+        no X-ray attacks).
         """
-        return bool(self.attackers_mask(color, square))
+        return bool(self.attackers_mask(color, square, None if occupied is None else SquareSet(occupied).mask))
 
-    def attackers(self, color: Color, square: Square) -> SquareSet:
+    def attackers(self, color: Color, square: Square, occupied: Optional[IntoSquareSet] = None) -> SquareSet:
         """
         Gets the set of attackers of the given color for the given square.
 
         Pinned pieces still count as attackers.
 
+        *occupied* determines which squares are considered to block attacks.
+        For example,
+        ``board.occupied ^ board.pieces_mask(chess.KING, board.turn)`` can be
+        used to consider X-ray attacks through the king.
+        Defaults to ``board.occupied`` (all pieces including the king,
+        no X-ray attacks).
+
         Returns a :class:`set of squares <chess.SquareSet>`.
         """
-        return SquareSet(self.attackers_mask(color, square))
+        return SquareSet(self.attackers_mask(color, square, None if occupied is None else SquareSet(occupied).mask))
 
     def pin_mask(self, color: Color, square: Square) -> Bitboard:
         king = self.king(color)
@@ -3723,7 +3736,7 @@ def generate_legal_captures(self, from_mask: Bitboard = BB_ALL, to_mask: Bitboar
             self.generate_legal_ep(from_mask, to_mask))
 
     def _attacked_for_king(self, path: Bitboard, occupied: Bitboard) -> bool:
-        return any(self._attackers_mask(not self.turn, sq, occupied) for sq in scan_reversed(path))
+        return any(self.attackers_mask(not self.turn, sq, occupied) for sq in scan_reversed(path))
 
     def generate_castling_moves(self, from_mask: Bitboard = BB_ALL, to_mask: Bitboard = BB_ALL) -> Iterator[Move]:
         if self.is_variant_end():

From 7836d446bf0cfc3b265e038fa381a7e52a543c41 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 19 Jul 2024 16:41:25 +0200
Subject: [PATCH 183/250] Add chess.svg.SvgWrapper._repr_html_() (closes #1096)

---
 chess/svg.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/chess/svg.py b/chess/svg.py
index d3d19e89e..2948b0b80 100644
--- a/chess/svg.py
+++ b/chess/svg.py
@@ -144,6 +144,9 @@ class SvgWrapper(str):
     def _repr_svg_(self) -> SvgWrapper:
         return self
 
+    def _repr_html_(self) -> SvgWrapper:
+        return self
+
 
 def _svg(viewbox: int, size: Optional[int]) -> ET.Element:
     svg = ET.Element("svg", {

From 247d8a06a6b2c2dc06f9ce0b7f3e94dbd9b816bd Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 19 Jul 2024 17:27:12 +0200
Subject: [PATCH 184/250] Update changelog for soon to be released final 1.x

---
 CHANGELOG.rst | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 0fa76effa..a4534badb 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -6,9 +6,26 @@ Upcoming in the next release
 
 Changes:
 
-* Dropped support for Python 3.7, which had reached its end of life.
-* `chess.engine.EventLoopPolicy` is no longer needed and now merely an alias
+* Drop support for Python 3.7, which has reached its end of life.
+* ``chess.engine.EventLoopPolicy`` is no longer needed and now merely an alias
   for the default event loop policy.
+* If available and requested via ``setpgrp``, use ``process_group`` support
+  from Python 3.11 for engine processes.
+* No longer eagerly reject 8 piece positions in ``chess.syzygy``, so that
+  some 8 piece positions with decisive captures can be probed successfully.
+* The string wrapper returned by ``chess.svg`` functions now also implements
+  ``_repr_html_``.
+
+New features:
+
+* Add ``chess.pgn.Game.time_control()`` and related data models.
+* Add model ``sf16.1`` for ``chess.engine.Score.wdl()``, the new default.
+
+Bugfixes:
+
+* Fix handling of whitespace in UCI engine communication.
+* For ``chess.Board.epd()`` and ``chess.Board.set_epd()``, require that EPD
+  opcodes start with a letter.
 
 New in v1.10.0 (27th Jul 2023)
 ------------------------------

From c7199a6354fe3053235c8ad88d79714afccdc0b9 Mon Sep 17 00:00:00 2001
From: Deepyaman Datta <deepyaman.datta@utexas.edu>
Date: Sun, 21 Jul 2024 22:42:48 -0600
Subject: [PATCH 185/250] Update default time control from UNKNOW to UNKNOWN

---
 chess/pgn.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 55eddbc29..0d0879ae0 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -143,7 +143,7 @@ class SkipType(enum.Enum):
 
 
 class TimeControlType(enum.Enum):
-    UNKNOW = 0
+    UNKNOWN = 0
     UNLIMITED = 1
     STANDARD = 2
     RAPID = 3
@@ -172,7 +172,7 @@ class TimeControl:
     """
 
     parts: list[TimeControlPart] = dataclasses.field(default_factory=list)
-    type: TimeControlType = TimeControlType.UNKNOW
+    type: TimeControlType = TimeControlType.UNKNOWN
 
 
 class _AcceptFrame:

From ad6f756c4406d66a59a9cd1050f50137de84dc30 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 31 Jul 2024 00:04:57 -0700
Subject: [PATCH 186/250] Factor out repeated annotation editing code

---
 chess/pgn.py | 31 ++++++++-----------------------
 1 file changed, 8 insertions(+), 23 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index b999d79a6..b8cfbe440 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -491,16 +491,7 @@ def set_eval(self, score: Optional[chess.engine.PovScore], depth: Optional[int]
             elif score.white().mate():
                 eval = f"[%eval #{score.white().mate()}{depth_suffix}]"
 
-        found = 0
-        for index in range(len(self.comments)):
-            self.comments[index], found = EVAL_REGEX.subn(_condense_affix(eval), self.comments[index], count=1)
-            if found:
-                break
-
-        self.comments = list(filter(None, self.comments))
-
-        if not found and eval:
-            self.comments.append(eval)
+        self._replace_or_add_annotation(eval, EVAL_REGEX)
 
     def arrows(self) -> List[chess.svg.Arrow]:
         """
@@ -573,16 +564,7 @@ def set_clock(self, seconds: Optional[float]) -> None:
             seconds_part = f"{seconds:06.3f}".rstrip("0").rstrip(".")
             clk = f"[%clk {hours:d}:{minutes:02d}:{seconds_part}]"
 
-        found = 0
-        for index in range(len(self.comments)):
-            self.comments[index], found = CLOCK_REGEX.subn(_condense_affix(clk), self.comments[index], count=1)
-            if found:
-                break
-
-        self.comments = list(filter(None, self.comments))
-
-        if not found and clk:
-            self.comments.append(clk)
+        self._replace_or_add_annotation(clk, CLOCK_REGEX)
 
     def emt(self) -> Optional[float]:
         """
@@ -611,16 +593,19 @@ def set_emt(self, seconds: Optional[float]) -> None:
             seconds_part = f"{seconds:06.3f}".rstrip("0").rstrip(".")
             emt = f"[%emt {hours:d}:{minutes:02d}:{seconds_part}]"
 
+        self._replace_or_add_annotation(emt, EMT_REGEX)
+
+    def _replace_or_add_annotation(self, text: str, regex: re.Pattern[str]) -> None:
         found = 0
         for index in range(len(self.comments)):
-            self.comments[index], found = EMT_REGEX.subn(_condense_affix(emt), self.comments[index], count=1)
+            self.comments[index], found = regex.subn(_condense_affix(text), self.comments[index], count=1)
             if found:
                 break
 
         self.comments = list(filter(None, self.comments))
 
-        if not found and emt:
-            self.comments.append(emt)
+        if not found and text:
+            self.comments.append(text)
 
     @abc.abstractmethod
     def accept(self, visitor: BaseVisitor[ResultT]) -> ResultT:

From 744d2fcae0b2c9d26007648099094b05475bb5cc Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 31 Jul 2024 00:48:02 -0700
Subject: [PATCH 187/250] Lazily remove curly braces from comments

---
 chess/pgn.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index c7d4a87a3..3acf66401 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -1400,9 +1400,8 @@ def end_variation(self) -> None:
     def visit_comment(self, comment: Union[str, list[str]]) -> None:
         if self.comments and (self.variations or not self.variation_depth):
             def pgn_format(comments: list[str]) -> str:
-                comments = list(map(lambda s: s.replace("{", ""), comments))
-                comments = list(map(lambda s: s.replace("}", ""), comments))
-                return " ".join(f"{{ {comment} }}" for comment in comments if comment)
+                edit = map(lambda s: s.replace("{", "").replace("}", ""), comments)
+                return " ".join(f"{{ {comment} }}" for comment in edit if comment)
 
             comments = _standardize_comments(comment)
             self.write_token(pgn_format(comments) + " ")

From dce369c6388805b5ac51c8b9b765e4da33f09795 Mon Sep 17 00:00:00 2001
From: Mark Harrison <mark.z.harrison@gmail.com>
Date: Wed, 31 Jul 2024 00:48:28 -0700
Subject: [PATCH 188/250] Add test for removing curly braces from comments

---
 test.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test.py b/test.py
index 23ecab2fc..2a4f551ea 100755
--- a/test.py
+++ b/test.py
@@ -2110,7 +2110,7 @@ def test_exporter(self):
         e4_c5.comments = ["Sicilian"]
 
         e4_d5_exd5 = e4_d5.add_main_variation(e4_d5.board().parse_san("exd5"))
-        e4_d5_exd5.comments = ["Best", "and the end of this example"]
+        e4_d5_exd5.comments = ["Best", "and the end of this {example}"]
 
         # Test string exporter with various options.
         exporter = chess.pgn.StringExporter(headers=False, comments=False, variations=False)

From dda9e8fedc75eefb0255245abff0782ecb26f882 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 15:09:53 +0200
Subject: [PATCH 189/250] Refactor chess.engine.BaseCommand to pass stricter
 type checking

---
 chess/engine.py | 614 +++++++++++++++++++++++++++---------------------
 1 file changed, 344 insertions(+), 270 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index c2b470dd5..d1bbaaee1 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -24,6 +24,9 @@
 from types import TracebackType
 from typing import Any, Callable, Coroutine, Deque, Dict, Generator, Generic, Iterable, Iterator, List, Literal, Mapping, MutableMapping, Optional, Tuple, Type, TypedDict, TypeVar, Union
 
+if typing.TYPE_CHECKING:
+    from typing_extensions import Self
+
 WdlModel = Literal["sf", "sf16.1", "sf16", "sf15.1", "sf15", "sf14", "sf12", "lichess"]
 
 
@@ -895,7 +898,7 @@ class Protocol(asyncio.SubprocessProtocol, metaclass=abc.ABCMeta):
     returncode: asyncio.Future[int]
     """Future: Exit code of the process."""
 
-    def __init__(self: ProtocolT) -> None:
+    def __init__(self) -> None:
         self.loop = asyncio.get_running_loop()
         self.transport: Optional[asyncio.SubprocessTransport] = None
 
@@ -904,8 +907,8 @@ def __init__(self: ProtocolT) -> None:
             2: bytearray(),  # stderr
         }
 
-        self.command: Optional[BaseCommand[ProtocolT, Any]] = None
-        self.next_command: Optional[BaseCommand[ProtocolT, Any]] = None
+        self.command: Optional[BaseCommand[Any]] = None
+        self.next_command: Optional[BaseCommand[Any]] = None
 
         self.initialized = False
         self.returncode: asyncio.Future[int] = asyncio.Future()
@@ -915,7 +918,7 @@ def connection_made(self, transport: asyncio.BaseTransport) -> None:
         self.transport = transport  # type: ignore
         LOGGER.debug("%s: Connection made", self)
 
-    def connection_lost(self: ProtocolT, exc: Optional[Exception]) -> None:
+    def connection_lost(self, exc: Optional[Exception]) -> None:
         assert self.transport is not None
         code = self.transport.get_returncode()
         assert code is not None, "connect lost, but got no returncode"
@@ -923,10 +926,10 @@ def connection_lost(self: ProtocolT, exc: Optional[Exception]) -> None:
 
         # Terminate commands.
         if self.command is not None:
-            self.command._engine_terminated(self, code)
+            self.command._engine_terminated(code)
             self.command = None
         if self.next_command is not None:
-            self.next_command._engine_terminated(self, code)
+            self.next_command._engine_terminated(code)
             self.next_command = None
 
         self.returncode.set_result(code)
@@ -960,18 +963,18 @@ def pipe_data_received(self, fd: int, data: Union[bytes, str]) -> None:
     def error_line_received(self, line: str) -> None:
         LOGGER.warning("%s: stderr >> %s", self, line)
 
-    def _line_received(self: ProtocolT, line: str) -> None:
+    def _line_received(self: Protocol, line: str) -> None:
         LOGGER.debug("%s: >> %s", self, line)
 
         self.line_received(line)
 
         if self.command:
-            self.command._line_received(self, line)
+            self.command._line_received(line)
 
     def line_received(self, line: str) -> None:
         pass
 
-    async def communicate(self: ProtocolT, command_factory: Callable[[ProtocolT], BaseCommand[ProtocolT, T]]) -> T:
+    async def communicate(self, command_factory: Callable[[Self], BaseCommand[T]]) -> T:
         command = command_factory(self)
 
         if self.returncode.done():
@@ -993,18 +996,18 @@ def previous_command_finished(_: Optional[asyncio.Future[None]]) -> None:
 
                 def cancel_if_cancelled(result: asyncio.Future[T]) -> None:
                     if result.cancelled():
-                        cmd._cancel(self)
+                        cmd._cancel()
 
                 cmd.result.add_done_callback(cancel_if_cancelled)
                 cmd.finished.add_done_callback(previous_command_finished)
-                cmd._start(self)
+                cmd._start()
 
         if self.command is None:
             previous_command_finished(None)
         elif not self.command.result.done():
             self.command.result.cancel()
         elif not self.command.result.cancelled():
-            self.command._cancel(self)
+            self.command._cancel()
 
         return await command.result
 
@@ -1207,32 +1210,34 @@ class CommandState(enum.Enum):
     DONE = enum.auto()
 
 
-class BaseCommand(Generic[ProtocolT, T]):
-    def __init__(self, engine: ProtocolT) -> None:
+class BaseCommand(Generic[T]):
+    def __init__(self, engine: Protocol) -> None:
+        self._engine = engine
+
         self.state = CommandState.NEW
 
         self.result: asyncio.Future[T] = asyncio.Future()
         self.finished: asyncio.Future[None] = asyncio.Future()
 
-    def _engine_terminated(self, engine: ProtocolT, code: int) -> None:
+    def _engine_terminated(self, code: int) -> None:
         hint = ", binary not compatible with cpu?" if code in [-4, 0xc000001d] else ""
         exc = EngineTerminatedError(f"engine process died unexpectedly (exit code: {code}{hint})")
         if self.state == CommandState.ACTIVE:
-            self.engine_terminated(engine, exc)
+            self.engine_terminated(exc)
         elif self.state == CommandState.CANCELLING:
             self.finished.set_result(None)
         elif self.state == CommandState.NEW:
-            self._handle_exception(engine, exc)
+            self._handle_exception(exc)
 
-    def _handle_exception(self, engine: ProtocolT, exc: Exception) -> None:
+    def _handle_exception(self, exc: Exception) -> None:
         if not self.result.done():
             self.result.set_exception(exc)
         else:
-            engine.loop.call_exception_handler({
+            self._engine.loop.call_exception_handler({ # XXX
                 "message": f"{type(self).__name__} failed after returning preliminary result ({self.result!r})",
                 "exception": exc,
-                "protocol": engine,
-                "transport": engine.transport,
+                "protocol": self._engine,
+                "transport": self._engine.transport,
             })
 
         if not self.finished.done():
@@ -1245,43 +1250,43 @@ def set_finished(self) -> None:
         self.finished.set_result(None)
         self.state = CommandState.DONE
 
-    def _cancel(self, engine: ProtocolT) -> None:
+    def _cancel(self) -> None:
         if self.state != CommandState.CANCELLING and self.state != CommandState.DONE:
             assert self.state == CommandState.ACTIVE
             self.state = CommandState.CANCELLING
-            self.cancel(engine)
+            self.cancel()
 
-    def _start(self, engine: ProtocolT) -> None:
+    def _start(self) -> None:
         assert self.state == CommandState.NEW
         self.state = CommandState.ACTIVE
         try:
-            self.check_initialized(engine)
-            self.start(engine)
+            self.check_initialized()
+            self.start()
         except EngineError as err:
-            self._handle_exception(engine, err)
+            self._handle_exception(err)
 
-    def _line_received(self, engine: ProtocolT, line: str) -> None:
+    def _line_received(self, line: str) -> None:
         assert self.state in [CommandState.ACTIVE, CommandState.CANCELLING]
         try:
-            self.line_received(engine, line)
+            self.line_received(line)
         except EngineError as err:
-            self._handle_exception(engine, err)
+            self._handle_exception(err)
 
-    def cancel(self, engine: ProtocolT) -> None:
+    def cancel(self) -> None:
         pass
 
-    def check_initialized(self, engine: ProtocolT) -> None:
-        if not engine.initialized:
+    def check_initialized(self) -> None:
+        if not self._engine.initialized:
             raise EngineError("tried to run command, but engine is not initialized")
 
-    def start(self, engine: ProtocolT) -> None:
+    def start(self) -> None:
         raise NotImplementedError
 
-    def line_received(self, engine: ProtocolT, line: str) -> None:
+    def line_received(self, line: str) -> None:
         pass
 
-    def engine_terminated(self, engine: ProtocolT, exc: Exception) -> None:
-        self._handle_exception(engine, exc)
+    def engine_terminated(self, exc: Exception) -> None:
+        self._handle_exception(exc)
 
     def __repr__(self) -> str:
         return "<{} at {:#x} (state={}, result={}, finished={}>".format(type(self).__name__, id(self), self.state, self.result, self.finished)
@@ -1307,26 +1312,33 @@ def __init__(self) -> None:
         self.ponderhit = False
 
     async def initialize(self) -> None:
-        class UciInitializeCommand(BaseCommand[UciProtocol, None]):
-            def check_initialized(self, engine: UciProtocol) -> None:
-                if engine.initialized:
+        class UciInitializeCommand(BaseCommand[None]):
+            def __init__(self, engine: UciProtocol):
+                super().__init__(engine)
+                self.engine = engine
+
+            @typing.override
+            def check_initialized(self) -> None:
+                if self.engine.initialized:
                     raise EngineError("engine already initialized")
 
-            def start(self, engine: UciProtocol) -> None:
-                engine.send_line("uci")
+            @typing.override
+            def start(self) -> None:
+                self.engine.send_line("uci")
 
-            def line_received(self, engine: UciProtocol, line: str) -> None:
+            @typing.override
+            def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if line.strip() == "uciok" and not self.result.done():
-                    engine.initialized = True
+                    self.engine.initialized = True
                     self.result.set_result(None)
                     self.set_finished()
                 elif token == "option":
-                    self._option(engine, remaining)
+                    self._option(remaining)
                 elif token == "id":
-                    self._id(engine, remaining)
+                    self._id(remaining)
 
-            def _option(self, engine: UciProtocol, arg: str) -> None:
+            def _option(self, arg: str) -> None:
                 current_parameter = None
                 option_parts: dict[str, str] = {k: "" for k in ["name", "type", "default", "min", "max"]}
                 var = []
@@ -1357,16 +1369,16 @@ def parse_min_max_value(option_parts: dict[str, str], which: Literal["min", "max
 
                 without_default = Option(name, type, None, min, max, var)
                 option = Option(without_default.name, without_default.type, without_default.parse(default), min, max, var)
-                engine.options[option.name] = option
+                self.engine.options[option.name] = option
 
                 if option.default is not None:
-                    engine.config[option.name] = option.default
+                    self.engine.config[option.name] = option.default
                 if option.default is not None and not option.is_managed() and option.name.lower() != "uci_analysemode":
-                    engine.target_config[option.name] = option.default
+                    self.engine.target_config[option.name] = option.default
 
-            def _id(self, engine: UciProtocol, arg: str) -> None:
+            def _id(self, arg: str) -> None:
                 key, value = _next_token(arg)
-                engine.id[key] = value.strip()
+                self.engine.id[key] = value.strip()
 
         return await self.communicate(UciInitializeCommand)
 
@@ -1395,16 +1407,21 @@ def debug(self, on: bool = True) -> None:
             self.send_line("debug off")
 
     async def ping(self) -> None:
-        class UciPingCommand(BaseCommand[UciProtocol, None]):
-            def start(self, engine: UciProtocol) -> None:
-                engine._isready()
+        class UciPingCommand(BaseCommand[None]):
+            def __init__(self, engine: UciProtocol) -> None:
+                super().__init__(engine)
+                self.engine =  engine
 
-            def line_received(self, engine: UciProtocol, line: str) -> None:
+            def start(self) -> None:
+                self.engine._isready()
+
+            @typing.override
+            def line_received(self, line: str) -> None:
                 if line.strip() == "readyok":
                     self.result.set_result(None)
                     self.set_finished()
                 else:
-                    LOGGER.warning("%s: Unexpected engine output: %r", engine, line)
+                    LOGGER.warning("%s: Unexpected engine output: %r", self.engine, line)
 
         return await self.communicate(UciPingCommand)
 
@@ -1438,10 +1455,14 @@ def _configure(self, options: ConfigMapping) -> None:
             self._setoption(name, value)
 
     async def configure(self, options: ConfigMapping) -> None:
-        class UciConfigureCommand(BaseCommand[UciProtocol, None]):
-            def start(self, engine: UciProtocol) -> None:
-                engine._configure(options)
-                engine.target_config.update({name: value for name, value in options.items() if value is not None})
+        class UciConfigureCommand(BaseCommand[None]):
+            def __init__(self, engine: UciProtocol):
+                super().__init__(engine)
+                self.engine = engine
+
+            def start(self) -> None:
+                self.engine._configure(options)
+                self.engine.target_config.update({name: value for name, value in options.items() if value is not None})
                 self.result.set_result(None)
                 self.set_finished()
 
@@ -1541,77 +1562,82 @@ async def play(self, board: chess.Board, limit: Limit, *, game: object = None, i
             new_options[name] = value
         new_options.update(self._opponent_configuration(opponent=opponent))
 
-        class UciPlayCommand(BaseCommand[UciProtocol, PlayResult]):
+        engine = self
+
+        class UciPlayCommand(BaseCommand[PlayResult]):
             def __init__(self, engine: UciProtocol):
                 super().__init__(engine)
+                self.engine = engine
 
                 # May ponderhit only in the same game and with unchanged target
                 # options. The managed options UCI_AnalyseMode, Ponder, and
                 # MultiPV never change between pondering play commands.
                 engine.may_ponderhit = board if ponder and not engine.first_game and game == engine.game and not engine._changed_options(new_options) else None
 
-            def start(self, engine: UciProtocol) -> None:
+            @typing.override
+            def start(self) -> None:
                 self.info: InfoDict = {}
                 self.pondering: Optional[chess.Board] = None
                 self.sent_isready = False
                 self.start_time = time.perf_counter()
 
-                if engine.ponderhit:
-                    engine.ponderhit = False
-                    engine.send_line("ponderhit")
+                if self.engine.ponderhit:
+                    self.engine.ponderhit = False
+                    self.engine.send_line("ponderhit")
                     return
 
-                if "UCI_AnalyseMode" in engine.options and "UCI_AnalyseMode" not in engine.target_config and all(name.lower() != "uci_analysemode" for name in new_options):
-                    engine._setoption("UCI_AnalyseMode", False)
-                if "Ponder" in engine.options:
-                    engine._setoption("Ponder", ponder)
-                if "MultiPV" in engine.options:
-                    engine._setoption("MultiPV", engine.options["MultiPV"].default)
+                if "UCI_AnalyseMode" in self.engine.options and "UCI_AnalyseMode" not in self.engine.target_config and all(name.lower() != "uci_analysemode" for name in new_options):
+                    self.engine._setoption("UCI_AnalyseMode", False)
+                if "Ponder" in self.engine.options:
+                    self.engine._setoption("Ponder", ponder)
+                if "MultiPV" in self.engine.options:
+                    self.engine._setoption("MultiPV", self.engine.options["MultiPV"].default)
 
-                new_opponent = new_options.get("UCI_Opponent") or engine.target_config.get("UCI_Opponent")
-                opponent_changed = new_opponent != engine.config.get("UCI_Opponent")
-                engine._configure(new_options)
+                new_opponent = new_options.get("UCI_Opponent") or self.engine.target_config.get("UCI_Opponent")
+                opponent_changed = new_opponent != self.engine.config.get("UCI_Opponent")
+                self.engine._configure(new_options)
 
-                if engine.first_game or engine.game != game or opponent_changed:
-                    engine.game = game
-                    engine._ucinewgame()
+                if self.engine.first_game or self.engine.game != game or opponent_changed:
+                    self.engine.game = game
+                    self.engine._ucinewgame()
                     self.sent_isready = True
-                    engine._isready()
+                    self.engine._isready()
                 else:
-                    self._readyok(engine)
+                    self._readyok()
 
-            def line_received(self, engine: UciProtocol, line: str) -> None:
+            @typing.override
+            def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token == "info":
-                    self._info(engine, remaining)
+                    self._info(remaining)
                 elif token == "bestmove":
-                    self._bestmove(engine, remaining)
+                    self._bestmove(remaining)
                 elif line.strip() == "readyok" and self.sent_isready:
-                    self._readyok(engine)
+                    self._readyok()
                 else:
-                    LOGGER.warning("%s: Unexpected engine output: %r", engine, line)
+                    LOGGER.warning("%s: Unexpected engine output: %r", self.engine, line)
 
-            def _readyok(self, engine: UciProtocol) -> None:
+            def _readyok(self) -> None:
                 self.sent_isready = False
                 engine._position(board)
                 engine._go(limit, root_moves=root_moves)
 
-            def _info(self, engine: UciProtocol, arg: str) -> None:
+            def _info(self, arg: str) -> None:
                 if not self.pondering:
-                    self.info.update(_parse_uci_info(arg, engine.board, info))
+                    self.info.update(_parse_uci_info(arg, self.engine.board, info))
 
-            def _bestmove(self, engine: UciProtocol, arg: str) -> None:
+            def _bestmove(self, arg: str) -> None:
                 if self.pondering:
                     self.pondering = None
                 elif not self.result.cancelled():
-                    best = _parse_uci_bestmove(engine.board, arg)
+                    best = _parse_uci_bestmove(self.engine.board, arg)
                     self.result.set_result(PlayResult(best.move, best.ponder, self.info))
 
                     if ponder and best.move and best.ponder:
                         self.pondering = board.copy()
                         self.pondering.push(best.move)
                         self.pondering.push(best.ponder)
-                        engine._position(self.pondering)
+                        self.engine._position(self.pondering)
 
                         # Adjust clocks for pondering.
                         time_used = time.perf_counter() - self.start_time
@@ -1627,89 +1653,98 @@ def _bestmove(self, engine: UciProtocol, arg: str) -> None:
                         if ponder_limit.remaining_moves:
                             ponder_limit.remaining_moves -= 1
 
-                        engine._go(ponder_limit, ponder=True)
+                        self.engine._go(ponder_limit, ponder=True)
 
                 if not self.pondering:
-                    self.end(engine)
+                    self.end()
 
-            def end(self, engine: UciProtocol) -> None:
+            def end(self) -> None:
                 engine.may_ponderhit = None
                 self.set_finished()
 
-            def cancel(self, engine: UciProtocol) -> None:
-                if engine.may_ponderhit and self.pondering and engine.may_ponderhit.move_stack == self.pondering.move_stack and engine.may_ponderhit == self.pondering:
-                    engine.ponderhit = True
-                    self.end(engine)
+            @typing.override
+            def cancel(self) -> None:
+                if self.engine.may_ponderhit and self.pondering and self.engine.may_ponderhit.move_stack == self.pondering.move_stack and self.engine.may_ponderhit == self.pondering:
+                    self.engine.ponderhit = True
+                    self.end()
                 else:
-                    engine.send_line("stop")
+                    self.engine.send_line("stop")
 
-            def engine_terminated(self, engine: UciProtocol, exc: Exception) -> None:
+            @typing.override
+            def engine_terminated(self, exc: Exception) -> None:
                 # Allow terminating engine while pondering.
                 if not self.result.done():
-                    super().engine_terminated(engine, exc)
+                    super().engine_terminated(exc)
 
         return await self.communicate(UciPlayCommand)
 
     async def analysis(self, board: chess.Board, limit: Optional[Limit] = None, *, multipv: Optional[int] = None, game: object = None, info: Info = INFO_ALL, root_moves: Optional[Iterable[chess.Move]] = None, options: ConfigMapping = {}) -> AnalysisResult:
-        class UciAnalysisCommand(BaseCommand[UciProtocol, AnalysisResult]):
-            def start(self, engine: UciProtocol) -> None:
-                self.analysis = AnalysisResult(stop=lambda: self.cancel(engine))
+        class UciAnalysisCommand(BaseCommand[AnalysisResult]):
+            def __init__(self, engine: UciProtocol):
+                super().__init__(engine)
+                self.engine = engine
+
+            def start(self) -> None:
+                self.analysis = AnalysisResult(stop=lambda: self.cancel())
                 self.sent_isready = False
 
-                if "Ponder" in engine.options:
-                    engine._setoption("Ponder", False)
-                if "UCI_AnalyseMode" in engine.options and "UCI_AnalyseMode" not in engine.target_config and all(name.lower() != "uci_analysemode" for name in options):
-                    engine._setoption("UCI_AnalyseMode", True)
-                if "MultiPV" in engine.options or (multipv and multipv > 1):
-                    engine._setoption("MultiPV", 1 if multipv is None else multipv)
+                if "Ponder" in self.engine.options:
+                    self.engine._setoption("Ponder", False)
+                if "UCI_AnalyseMode" in self.engine.options and "UCI_AnalyseMode" not in self.engine.target_config and all(name.lower() != "uci_analysemode" for name in options):
+                    self.engine._setoption("UCI_AnalyseMode", True)
+                if "MultiPV" in self.engine.options or (multipv and multipv > 1):
+                    self.engine._setoption("MultiPV", 1 if multipv is None else multipv)
 
-                engine._configure(options)
+                self.engine._configure(options)
 
-                if engine.first_game or engine.game != game:
-                    engine.game = game
-                    engine._ucinewgame()
+                if self.engine.first_game or self.engine.game != game:
+                    self.engine.game = game
+                    self.engine._ucinewgame()
                     self.sent_isready = True
-                    engine._isready()
+                    self.engine._isready()
                 else:
-                    self._readyok(engine)
+                    self._readyok()
 
-            def line_received(self, engine: UciProtocol, line: str) -> None:
+            @typing.override
+            def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token == "info":
-                    self._info(engine, remaining)
+                    self._info(remaining)
                 elif token == "bestmove":
-                    self._bestmove(engine, remaining)
+                    self._bestmove(remaining)
                 elif line.strip() == "readyok" and self.sent_isready:
-                    self._readyok(engine)
+                    self._readyok()
                 else:
-                    LOGGER.warning("%s: Unexpected engine output: %r", engine, line)
+                    LOGGER.warning("%s: Unexpected engine output: %r", self.engine, line)
 
-            def _readyok(self, engine: UciProtocol) -> None:
+            def _readyok(self) -> None:
                 self.sent_isready = False
-                engine._position(board)
+                self.engine._position(board)
 
                 if limit:
-                    engine._go(limit, root_moves=root_moves)
+                    self.engine._go(limit, root_moves=root_moves)
                 else:
-                    engine._go(Limit(), root_moves=root_moves, infinite=True)
+                    self.engine._go(Limit(), root_moves=root_moves, infinite=True)
 
                 self.result.set_result(self.analysis)
 
-            def _info(self, engine: UciProtocol, arg: str) -> None:
-                self.analysis.post(_parse_uci_info(arg, engine.board, info))
+            def _info(self, arg: str) -> None:
+                self.analysis.post(_parse_uci_info(arg, self.engine.board, info))
 
-            def _bestmove(self, engine: UciProtocol, arg: str) -> None:
+            def _bestmove(self, arg: str) -> None:
                 if not self.result.done():
                     raise EngineError("was not searching, but engine sent bestmove")
-                best = _parse_uci_bestmove(engine.board, arg)
+                best = _parse_uci_bestmove(self.engine.board, arg)
                 self.set_finished()
                 self.analysis.set_finished(best)
 
-            def cancel(self, engine: UciProtocol) -> None:
-                engine.send_line("stop")
+            @typing.override
+            def cancel(self) -> None:
+                self.engine.send_line("stop")
 
-            def engine_terminated(self, engine: UciProtocol, exc: Exception) -> None:
-                LOGGER.debug("%s: Closing analysis because engine has been terminated (error: %s)", engine, exc)
+            @typing.override
+            def engine_terminated(self, exc: Exception) -> None:
+                LOGGER.debug("%s: Closing analysis because engine has been terminated (error: %s)", self.engine, exc)
                 self.analysis.set_exception(exc)
 
         return await self.communicate(UciAnalysisCommand)
@@ -1938,89 +1973,96 @@ def __init__(self) -> None:
         self.first_game = True
 
     async def initialize(self) -> None:
-        class XBoardInitializeCommand(BaseCommand[XBoardProtocol, None]):
-            def check_initialized(self, engine: XBoardProtocol) -> None:
-                if engine.initialized:
+        class XBoardInitializeCommand(BaseCommand[None]):
+            def __init__(self, engine: XBoardProtocol):
+                super().__init__(engine)
+                self.engine = engine
+
+            @typing.override
+            def check_initialized(self) -> None:
+                if self.engine.initialized:
                     raise EngineError("engine already initialized")
 
-            def start(self, engine: XBoardProtocol) -> None:
-                engine.send_line("xboard")
-                engine.send_line("protover 2")
-                self.timeout_handle = engine.loop.call_later(2.0, lambda: self.timeout(engine))
+            @typing.override
+            def start(self) -> None:
+                self.engine.send_line("xboard")
+                self.engine.send_line("protover 2")
+                self.timeout_handle = self.engine.loop.call_later(2.0, lambda: self.timeout())
 
-            def timeout(self, engine: XBoardProtocol) -> None:
-                LOGGER.error("%s: Timeout during initialization", engine)
-                self.end(engine)
+            def timeout(self) -> None:
+                LOGGER.error("%s: Timeout during initialization", self.engine)
+                self.end()
 
-            def line_received(self, engine: XBoardProtocol, line: str) -> None:
+            @typing.override
+            def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token.startswith("#"):
                     pass
                 elif token == "feature":
-                    self._feature(engine, remaining)
+                    self._feature(remaining)
                 elif XBOARD_ERROR_REGEX.match(line):
                     raise EngineError(line)
 
-            def _feature(self, engine: XBoardProtocol, arg: str) -> None:
+            def _feature(self, arg: str) -> None:
                 for feature in shlex.split(arg):
                     key, value = feature.split("=", 1)
                     if key == "option":
                         option = _parse_xboard_option(value)
                         if option.name not in ["random", "computer", "cores", "memory"]:
-                            engine.options[option.name] = option
+                            self.engine.options[option.name] = option
                     else:
                         try:
-                            engine.features[key] = int(value)
+                            self.engine.features[key] = int(value)
                         except ValueError:
-                            engine.features[key] = value
+                            self.engine.features[key] = value
 
-                if "done" in engine.features:
+                if "done" in self.engine.features:
                     self.timeout_handle.cancel()
-                if engine.features.get("done"):
-                    self.end(engine)
+                if self.engine.features.get("done"):
+                    self.end()
 
-            def end(self, engine: XBoardProtocol) -> None:
-                if not engine.features.get("ping", 0):
+            def end(self) -> None:
+                if not self.engine.features.get("ping", 0):
                     self.result.set_exception(EngineError("xboard engine did not declare required feature: ping"))
                     self.set_finished()
                     return
-                if not engine.features.get("setboard", 0):
+                if not self.engine.features.get("setboard", 0):
                     self.result.set_exception(EngineError("xboard engine did not declare required feature: setboard"))
                     self.set_finished()
                     return
 
-                if not engine.features.get("reuse", 1):
-                    LOGGER.warning("%s: Rejecting feature reuse=0", engine)
-                    engine.send_line("rejected reuse")
-                if not engine.features.get("sigterm", 1):
-                    LOGGER.warning("%s: Rejecting feature sigterm=0", engine)
-                    engine.send_line("rejected sigterm")
-                if engine.features.get("san", 0):
-                    LOGGER.warning("%s: Rejecting feature san=1", engine)
-                    engine.send_line("rejected san")
-
-                if "myname" in engine.features:
-                    engine.id["name"] = str(engine.features["myname"])
-
-                if engine.features.get("memory", 0):
-                    engine.options["memory"] = Option("memory", "spin", 16, 1, None, None)
-                    engine.send_line("accepted memory")
-                if engine.features.get("smp", 0):
-                    engine.options["cores"] = Option("cores", "spin", 1, 1, None, None)
-                    engine.send_line("accepted smp")
-                if engine.features.get("egt"):
-                    for egt in str(engine.features["egt"]).split(","):
+                if not self.engine.features.get("reuse", 1):
+                    LOGGER.warning("%s: Rejecting feature reuse=0", self.engine)
+                    self.engine.send_line("rejected reuse")
+                if not self.engine.features.get("sigterm", 1):
+                    LOGGER.warning("%s: Rejecting feature sigterm=0", self.engine)
+                    self.engine.send_line("rejected sigterm")
+                if self.engine.features.get("san", 0):
+                    LOGGER.warning("%s: Rejecting feature san=1", self.engine)
+                    self.engine.send_line("rejected san")
+
+                if "myname" in self.engine.features:
+                    self.engine.id["name"] = str(self.engine.features["myname"])
+
+                if self.engine.features.get("memory", 0):
+                    self.engine.options["memory"] = Option("memory", "spin", 16, 1, None, None)
+                    self.engine.send_line("accepted memory")
+                if self.engine.features.get("smp", 0):
+                    self.engine.options["cores"] = Option("cores", "spin", 1, 1, None, None)
+                    self.engine.send_line("accepted smp")
+                if self.engine.features.get("egt"):
+                    for egt in str(self.engine.features["egt"]).split(","):
                         name = f"egtpath {egt}"
-                        engine.options[name] = Option(name, "path", None, None, None, None)
-                    engine.send_line("accepted egt")
+                        self.engine.options[name] = Option(name, "path", None, None, None, None)
+                    self.engine.send_line("accepted egt")
 
-                for option in engine.options.values():
+                for option in self.engine.options.values():
                     if option.default is not None:
-                        engine.config[option.name] = option.default
+                        self.engine.config[option.name] = option.default
                     if option.default is not None and not option.is_managed():
-                        engine.target_config[option.name] = option.default
+                        self.engine.target_config[option.name] = option.default
 
-                engine.initialized = True
+                self.engine.initialized = True
                 self.result.set_result(None)
                 self.set_finished()
 
@@ -2105,18 +2147,24 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping, opponen
             self.board.push(move)
 
     async def ping(self) -> None:
-        class XBoardPingCommand(BaseCommand[XBoardProtocol, None]):
-            def start(self, engine: XBoardProtocol) -> None:
+        class XBoardPingCommand(BaseCommand[None]):
+            def __init__(self, engine: XBoardProtocol):
+                super().__init__(engine)
+                self.engine = engine
+
+            @typing.override
+            def start(self) -> None:
                 n = id(self) & 0xffff
                 self.pong = f"pong {n}"
-                engine._ping(n)
+                self.engine._ping(n)
 
-            def line_received(self, engine: XBoardProtocol, line: str) -> None:
+            @typing.override
+            def line_received(self, line: str) -> None:
                 if line == self.pong:
                     self.result.set_result(None)
                     self.set_finished()
                 elif not line.startswith("#"):
-                    LOGGER.warning("%s: Unexpected engine output: %r", engine, line)
+                    LOGGER.warning("%s: Unexpected engine output: %r", self.engine, line)
                 elif XBOARD_ERROR_REGEX.match(line):
                     raise EngineError(line)
 
@@ -2126,54 +2174,60 @@ async def play(self, board: chess.Board, limit: Limit, *, game: object = None, i
         if root_moves is not None:
             raise EngineError("play with root_moves, but xboard supports 'include' only in analysis mode")
 
-        class XBoardPlayCommand(BaseCommand[XBoardProtocol, PlayResult]):
-            def start(self, engine: XBoardProtocol) -> None:
+        class XBoardPlayCommand(BaseCommand[PlayResult]):
+            def __init__(self, engine: XBoardProtocol):
+                super().__init__(engine)
+                self.engine = engine
+
+            @typing.override
+            def start(self) -> None:
                 self.play_result = PlayResult(None, None)
                 self.stopped = False
                 self.pong_after_move: Optional[str] = None
                 self.pong_after_ponder: Optional[str] = None
 
                 # Set game, position and configure.
-                engine._new(board, game, options, opponent)
+                self.engine._new(board, game, options, opponent)
 
                 # Limit or time control.
                 clock = limit.white_clock if board.turn else limit.black_clock
                 increment = limit.white_inc if board.turn else limit.black_inc
-                if limit.clock_id is None or limit.clock_id != engine.clock_id:
-                    self._send_time_control(engine, clock, increment)
-                engine.clock_id = limit.clock_id
+                if limit.clock_id is None or limit.clock_id != self.engine.clock_id:
+                    self._send_time_control(clock, increment)
+                self.engine.clock_id = limit.clock_id
                 if limit.nodes is not None:
                     if limit.time is not None or limit.white_clock is not None or limit.black_clock is not None or increment is not None:
                         raise EngineError("xboard does not support mixing node limits with time limits")
 
-                    if "nps" not in engine.features:
+                    if "nps" not in self.engine.features:
                         LOGGER.warning("%s: Engine did not explicitly declare support for node limits (feature nps=?)")
-                    elif not engine.features["nps"]:
+                    elif not self.engine.features["nps"]:
                         raise EngineError("xboard engine does not support node limits (feature nps=0)")
 
-                    engine.send_line("nps 1")
-                    engine.send_line(f"st {max(1, int(limit.nodes))}")
+                    self.engine.send_line("nps 1")
+                    self.engine.send_line(f"st {max(1, int(limit.nodes))}")
                 if limit.depth is not None:
-                    engine.send_line(f"sd {max(1, int(limit.depth))}")
+                    self.engine.send_line(f"sd {max(1, int(limit.depth))}")
                 if limit.white_clock is not None:
-                    engine.send_line("{} {}".format("time" if board.turn else "otim", max(1, round(limit.white_clock * 100))))
+                    self.engine.send_line("{} {}".format("time" if board.turn else "otim", max(1, round(limit.white_clock * 100))))
                 if limit.black_clock is not None:
-                    engine.send_line("{} {}".format("otim" if board.turn else "time", max(1, round(limit.black_clock * 100))))
+                    self.engine.send_line("{} {}".format("otim" if board.turn else "time", max(1, round(limit.black_clock * 100))))
 
-                if draw_offered and engine.features.get("draw", 1):
-                    engine.send_line("draw")
+                if draw_offered and self.engine.features.get("draw", 1):
+                    self.engine.send_line("draw")
 
                 # Start thinking.
-                engine.send_line("post" if info else "nopost")
-                engine.send_line("hard" if ponder else "easy")
-                engine.send_line("go")
+                self.engine.send_line("post" if info else "nopost")
+                self.engine.send_line("hard" if ponder else "easy")
+                self.engine.send_line("go")
 
-            def line_received(self, engine: XBoardProtocol, line: str) -> None:
+            @typing.override
+            def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token == "move":
-                    self._move(engine, remaining.strip())
+                    self._move(remaining.strip())
                 elif token == "Hint:":
-                    self._hint(engine, remaining.strip())
+                    self._hint(remaining.strip())
                 elif token == "pong":
                     pong_line = f"{token} {remaining.strip()}"
                     if pong_line == self.pong_after_move:
@@ -2188,84 +2242,86 @@ def line_received(self, engine: XBoardProtocol, line: str) -> None:
                 elif f"{token} {remaining.strip()}" == "offer draw":
                     if not self.result.done():
                         self.play_result.draw_offered = True
-                    self._ping_after_move(engine)
+                    self._ping_after_move()
                 elif line.strip() == "resign":
                     if not self.result.done():
                         self.play_result.resigned = True
-                    self._ping_after_move(engine)
+                    self._ping_after_move()
                 elif token in ["1-0", "0-1", "1/2-1/2"]:
                     if "resign" in line and not self.result.done():
                         self.play_result.resigned = True
-                    self._ping_after_move(engine)
+                    self._ping_after_move()
                 elif token.startswith("#"):
                     pass
                 elif XBOARD_ERROR_REGEX.match(line):
-                    engine.first_game = True  # Board state might no longer be in sync
+                    self.engine.first_game = True  # Board state might no longer be in sync
                     raise EngineError(line)
                 elif len(line.split()) >= 4 and line.lstrip()[0].isdigit():
-                    self._post(engine, line)
+                    self._post(line)
                 else:
-                    LOGGER.warning("%s: Unexpected engine output: %r", engine, line)
+                    LOGGER.warning("%s: Unexpected engine output: %r", self.engine, line)
 
-            def _send_time_control(self, engine: XBoardProtocol, clock: Optional[float], increment: Optional[float]) -> None:
+            def _send_time_control(self, clock: Optional[float], increment: Optional[float]) -> None:
                 if limit.remaining_moves or clock is not None or increment is not None:
                     base_mins, base_secs = divmod(int(clock or 0), 60)
-                    engine.send_line(f"level {limit.remaining_moves or 0} {base_mins}:{base_secs:02d} {increment or 0}")
+                    self.engine.send_line(f"level {limit.remaining_moves or 0} {base_mins}:{base_secs:02d} {increment or 0}")
                 if limit.time is not None:
-                    engine.send_line(f"st {max(0.01, limit.time)}")
+                    self.engine.send_line(f"st {max(0.01, limit.time)}")
 
-            def _post(self, engine: XBoardProtocol, line: str) -> None:
+            def _post(self, line: str) -> None:
                 if not self.result.done():
-                    self.play_result.info = _parse_xboard_post(line, engine.board, info)
+                    self.play_result.info = _parse_xboard_post(line, self.engine.board, info)
 
-            def _move(self, engine: XBoardProtocol, arg: str) -> None:
+            def _move(self, arg: str) -> None:
                 if not self.result.done() and self.play_result.move is None:
                     try:
-                        self.play_result.move = engine.board.push_xboard(arg)
+                        self.play_result.move = self.engine.board.push_xboard(arg)
                     except ValueError as err:
                         self.result.set_exception(EngineError(err))
                     else:
-                        self._ping_after_move(engine)
+                        self._ping_after_move()
                 else:
                     try:
-                        engine.board.push_xboard(arg)
+                        self.engine.board.push_xboard(arg)
                     except ValueError:
                         LOGGER.exception("Exception playing unexpected move")
 
-            def _hint(self, engine: XBoardProtocol, arg: str) -> None:
+            def _hint(self, arg: str) -> None:
                 if not self.result.done() and self.play_result.move is not None and self.play_result.ponder is None:
                     try:
-                        self.play_result.ponder = engine.board.parse_xboard(arg)
+                        self.play_result.ponder = self.engine.board.parse_xboard(arg)
                     except ValueError:
                         LOGGER.exception("Exception parsing hint")
                 else:
                     LOGGER.warning("Unexpected hint: %r", arg)
 
-            def _ping_after_move(self, engine: XBoardProtocol) -> None:
+            def _ping_after_move(self) -> None:
                 if self.pong_after_move is None:
                     n = id(self) & 0xffff
                     self.pong_after_move = f"pong {n}"
-                    engine._ping(n)
+                    self.engine._ping(n)
 
-            def cancel(self, engine: XBoardProtocol) -> None:
+            @typing.override
+            def cancel(self) -> None:
                 if self.stopped:
                     return
                 self.stopped = True
 
                 if self.result.cancelled():
-                    engine.send_line("?")
+                    self.engine.send_line("?")
 
                 if ponder:
-                    engine.send_line("easy")
+                    self.engine.send_line("easy")
 
                     n = (id(self) + 1) & 0xffff
                     self.pong_after_ponder = f"pong {n}"
-                    engine._ping(n)
+                    self.engine._ping(n)
 
-            def engine_terminated(self, engine: XBoardProtocol, exc: Exception) -> None:
+            @typing.override
+            def engine_terminated(self, exc: Exception) -> None:
                 # Allow terminating engine while pondering.
                 if not self.result.done():
-                    super().engine_terminated(engine, exc)
+                    super().engine_terminated(exc)
 
         return await self.communicate(XBoardPlayCommand)
 
@@ -2276,49 +2332,55 @@ async def analysis(self, board: chess.Board, limit: Optional[Limit] = None, *, m
         if limit is not None and (limit.white_clock is not None or limit.black_clock is not None):
             raise EngineError("xboard analysis does not support clock limits")
 
-        class XBoardAnalysisCommand(BaseCommand[XBoardProtocol, AnalysisResult]):
-            def start(self, engine: XBoardProtocol) -> None:
+        class XBoardAnalysisCommand(BaseCommand[AnalysisResult]):
+            def __init__(self, engine: XBoardProtocol):
+                super().__init__(engine)
+                self.engine = engine
+
+            @typing.override
+            def start(self) -> None:
                 self.stopped = False
                 self.best_move: Optional[chess.Move] = None
-                self.analysis = AnalysisResult(stop=lambda: self.cancel(engine))
+                self.analysis = AnalysisResult(stop=lambda: self.cancel())
                 self.final_pong: Optional[str] = None
 
-                engine._new(board, game, options)
+                self.engine._new(board, game, options)
 
                 if root_moves is not None:
-                    if not engine.features.get("exclude", 0):
+                    if not self.engine.features.get("exclude", 0):
                         raise EngineError("xboard engine does not support root_moves (feature exclude=0)")
 
-                    engine.send_line("exclude all")
+                    self.engine.send_line("exclude all")
                     for move in root_moves:
-                        engine.send_line(f"include {engine.board.xboard(move)}")
+                        self.engine.send_line(f"include {self.engine.board.xboard(move)}")
 
-                engine.send_line("post")
-                engine.send_line("analyze")
+                self.engine.send_line("post")
+                self.engine.send_line("analyze")
 
                 self.result.set_result(self.analysis)
 
                 if limit is not None and limit.time is not None:
-                    self.time_limit_handle: Optional[asyncio.Handle] = engine.loop.call_later(limit.time, lambda: self.cancel(engine))
+                    self.time_limit_handle: Optional[asyncio.Handle] = self.engine.loop.call_later(limit.time, lambda: self.cancel())
                 else:
                     self.time_limit_handle = None
 
-            def line_received(self, engine: XBoardProtocol, line: str) -> None:
+            @typing.override
+            def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token.startswith("#"):
                     pass
                 elif len(line.split()) >= 4 and line.lstrip()[0].isdigit():
-                    self._post(engine, line)
+                    self._post(line)
                 elif f"{token} {remaining.strip()}" == self.final_pong:
-                    self.end(engine)
+                    self.end()
                 elif XBOARD_ERROR_REGEX.match(line):
-                    engine.first_game = True  # Board state might no longer be in sync
+                    self.engine.first_game = True  # Board state might no longer be in sync
                     raise EngineError(line)
                 else:
-                    LOGGER.warning("%s: Unexpected engine output: %r", engine, line)
+                    LOGGER.warning("%s: Unexpected engine output: %r", self.engine, line)
 
-            def _post(self, engine: XBoardProtocol, line: str) -> None:
-                post_info = _parse_xboard_post(line, engine.board, info)
+            def _post(self, line: str) -> None:
+                post_info = _parse_xboard_post(line, self.engine.board, info)
                 self.analysis.post(post_info)
 
                 pv = post_info.get("pv")
@@ -2327,36 +2389,38 @@ def _post(self, engine: XBoardProtocol, line: str) -> None:
 
                 if limit is not None:
                     if limit.time is not None and post_info.get("time", 0) >= limit.time:
-                        self.cancel(engine)
+                        self.cancel()
                     elif limit.nodes is not None and post_info.get("nodes", 0) >= limit.nodes:
-                        self.cancel(engine)
+                        self.cancel()
                     elif limit.depth is not None and post_info.get("depth", 0) >= limit.depth:
-                        self.cancel(engine)
+                        self.cancel()
                     elif limit.mate is not None and "score" in post_info:
                         if post_info["score"].relative >= Mate(limit.mate):
-                            self.cancel(engine)
+                            self.cancel()
 
-            def end(self, engine: XBoardProtocol) -> None:
+            def end(self) -> None:
                 if self.time_limit_handle:
                     self.time_limit_handle.cancel()
 
                 self.set_finished()
                 self.analysis.set_finished(BestMove(self.best_move, None))
 
-            def cancel(self, engine: XBoardProtocol) -> None:
+            @typing.override
+            def cancel(self) -> None:
                 if self.stopped:
                     return
                 self.stopped = True
 
-                engine.send_line(".")
-                engine.send_line("exit")
+                self.engine.send_line(".")
+                self.engine.send_line("exit")
 
                 n = id(self) & 0xffff
                 self.final_pong = f"pong {n}"
-                engine._ping(n)
+                self.engine._ping(n)
 
-            def engine_terminated(self, engine: XBoardProtocol, exc: Exception) -> None:
-                LOGGER.debug("%s: Closing analysis because engine has been terminated (error: %s)", engine, exc)
+            @typing.override
+            def engine_terminated(self, exc: Exception) -> None:
+                LOGGER.debug("%s: Closing analysis because engine has been terminated (error: %s)", self.engine, exc)
 
                 if self.time_limit_handle:
                     self.time_limit_handle.cancel()
@@ -2397,10 +2461,15 @@ def _configure(self, options: ConfigMapping) -> None:
             self._setoption(name, value)
 
     async def configure(self, options: ConfigMapping) -> None:
-        class XBoardConfigureCommand(BaseCommand[XBoardProtocol, None]):
-            def start(self, engine: XBoardProtocol) -> None:
-                engine._configure(options)
-                engine.target_config.update({name: value for name, value in options.items() if value is not None})
+        class XBoardConfigureCommand(BaseCommand[None]):
+            def __init__(self, engine: XBoardProtocol):
+                super().__init__(engine)
+                self.engine = engine
+
+            @typing.override
+            def start(self) -> None:
+                self.engine._configure(options)
+                self.engine.target_config.update({name: value for name, value in options.items() if value is not None})
                 self.result.set_result(None)
                 self.set_finished()
 
@@ -2423,12 +2492,17 @@ async def send_opponent_information(self, *, opponent: Optional[Opponent] = None
         return await self.configure(self._opponent_configuration(opponent=opponent, engine_rating=engine_rating))
 
     async def send_game_result(self, board: chess.Board, winner: Optional[Color] = None, game_ending: Optional[str] = None, game_complete: bool = True) -> None:
-        class XBoardGameResultCommand(BaseCommand[XBoardProtocol, None]):
-            def start(self, engine: XBoardProtocol) -> None:
+        class XBoardGameResultCommand(BaseCommand[None]):
+            def __init__(self, engine: XBoardProtocol):
+                super().__init__(engine)
+                self.engine = engine
+
+            @typing.override
+            def start(self) -> None:
                 if game_ending and any(c in game_ending for c in "{}\n\r"):
                     raise EngineError(f"invalid line break or curly braces in game ending message: {game_ending!r}")
 
-                engine._new(board, engine.game, {})  # Send final moves to engine.
+                self.engine._new(board, self.engine.game, {})  # Send final moves to engine.
 
                 outcome = board.outcome(claim_draw=True)
 
@@ -2451,7 +2525,7 @@ def start(self, engine: XBoardProtocol) -> None:
                     ending = ""
 
                 ending_text = f"{{{ending}}}" if ending else ""
-                engine.send_line(f"result {result} {ending_text}".strip())
+                self.engine.send_line(f"result {result} {ending_text}".strip())
                 self.result.set_result(None)
                 self.set_finished()
 
@@ -2845,7 +2919,7 @@ def id(self) -> Mapping[str, str]:
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)
         return future.result()
 
-    def communicate(self, command_factory: Callable[[Protocol], BaseCommand[Protocol, T]]) -> T:
+    def communicate(self, command_factory: Callable[[Protocol], BaseCommand[T]]) -> T:
         with self._not_shut_down():
             coro = self.protocol.communicate(command_factory)
             future = asyncio.run_coroutine_threadsafe(coro, self.protocol.loop)

From 5d8e82da82156f5eae2d15f07e2c24d800c87a41 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 16:05:29 +0200
Subject: [PATCH 190/250] Let variant boards manage their own stack

---
 chess/__init__.py |  9 +++----
 chess/variant.py  | 66 +++++++++++++++++++++++++++++++++++------------
 2 files changed, 53 insertions(+), 22 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index a90df9ef6..b82f8559f 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -1542,7 +1542,7 @@ def from_chess960_pos(cls: Type[BaseBoardT], scharnagl: int) -> BaseBoardT:
 
 BoardT = TypeVar("BoardT", bound="Board")
 
-class _BoardState(Generic[BoardT]):
+class _BoardState:
 
     def __init__(self, board: BoardT) -> None:
         self.pawns = board.pawns
@@ -1701,7 +1701,7 @@ def __init__(self: BoardT, fen: Optional[str] = STARTING_FEN, *, chess960: bool
 
         self.ep_square = None
         self.move_stack = []
-        self._stack: List[_BoardState[BoardT]] = []
+        self._stack: List[_BoardState] = []
 
         if fen is None:
             self.clear()
@@ -2304,9 +2304,6 @@ def is_repetition(self, count: int = 3) -> bool:
 
         return False
 
-    def _board_state(self: BoardT) -> _BoardState[BoardT]:
-        return _BoardState(self)
-
     def _push_capture(self, move: Move, capture_square: Square, piece_type: PieceType, was_promoted: bool) -> None:
         pass
 
@@ -2335,7 +2332,7 @@ def push(self: BoardT, move: Move) -> None:
         """
         # Push move and remember board state.
         move = self._to_chess960(move)
-        board_state = self._board_state()
+        board_state = _BoardState(self)
         self.castling_rights = self.clean_castling_rights()  # Before pushing stack
         self.move_stack.append(self._from_chess960(self.chess960, move.from_square, move.to_square, move.promotion, move.drop))
         self._stack.append(board_state)
diff --git a/chess/variant.py b/chess/variant.py
index 6160696a2..119a0402c 100644
--- a/chess/variant.py
+++ b/chess/variant.py
@@ -673,14 +673,12 @@ def status(self) -> chess.Status:
 
 ThreeCheckBoardT = TypeVar("ThreeCheckBoardT", bound="ThreeCheckBoard")
 
-class _ThreeCheckBoardState(Generic[ThreeCheckBoardT], chess._BoardState[ThreeCheckBoardT]):
-    def __init__(self, board: ThreeCheckBoardT) -> None:
-        super().__init__(board)
+class _ThreeCheckBoardState:
+    def __init__(self, board: ThreeCheckBoard) -> None:
         self.remaining_checks_w = board.remaining_checks[chess.WHITE]
         self.remaining_checks_b = board.remaining_checks[chess.BLACK]
 
-    def restore(self, board: ThreeCheckBoardT) -> None:
-        super().restore(board)
+    def restore(self, board: ThreeCheckBoard) -> None:
         board.remaining_checks[chess.WHITE] = self.remaining_checks_w
         board.remaining_checks[chess.BLACK] = self.remaining_checks_b
 
@@ -698,8 +696,13 @@ class ThreeCheckBoard(chess.Board):
 
     def __init__(self, fen: Optional[str] = starting_fen, chess960: bool = False) -> None:
         self.remaining_checks = [3, 3]
+        self._three_check_stack: List[_ThreeCheckBoardState] = []
         super().__init__(fen, chess960=chess960)
 
+    def clear_stack(self) -> None:
+        super().clear_stack()
+        self._three_check_stack.clear()
+
     def reset_board(self) -> None:
         super().reset_board()
         self.remaining_checks[chess.WHITE] = 3
@@ -710,14 +713,17 @@ def clear_board(self) -> None:
         self.remaining_checks[chess.WHITE] = 3
         self.remaining_checks[chess.BLACK] = 3
 
-    def _board_state(self: ThreeCheckBoardT) -> _ThreeCheckBoardState[ThreeCheckBoardT]:
-        return _ThreeCheckBoardState(self)
-
     def push(self, move: chess.Move) -> None:
+        self._three_check_stack.append(_ThreeCheckBoardState(self))
         super().push(move)
         if self.is_check():
             self.remaining_checks[not self.turn] -= 1
 
+    def pop(self) -> chess.Move:
+        move = super().pop()
+        self._three_check_stack.pop().restore(self)
+        return move
+
     def has_insufficient_material(self, color: chess.Color) -> bool:
         # Any remaining piece can give check.
         return not (self.occupied_co[color] & ~self.kings)
@@ -792,8 +798,19 @@ def _transposition_key(self) -> Hashable:
     def copy(self: ThreeCheckBoardT, stack: Union[bool, int] = True) -> ThreeCheckBoardT:
         board = super().copy(stack=stack)
         board.remaining_checks = self.remaining_checks.copy()
+        if stack:
+            stack = len(self.move_stack) if stack is True else stack
+            board._three_check_stack = self._three_check_stack[-stack:]
         return board
 
+    def root(self: ThreeCheckBoardT) -> ThreeCheckBoardT:
+        if self._three_check_stack:
+            board = super().root()
+            self._three_check_stack[0].restore(board)
+            return board
+        else:
+            return self.copy(stack=False)
+
     def mirror(self: ThreeCheckBoardT) -> ThreeCheckBoardT:
         board = super().mirror()
         board.remaining_checks[chess.WHITE] = self.remaining_checks[chess.BLACK]
@@ -803,14 +820,12 @@ def mirror(self: ThreeCheckBoardT) -> ThreeCheckBoardT:
 
 CrazyhouseBoardT = TypeVar("CrazyhouseBoardT", bound="CrazyhouseBoard")
 
-class _CrazyhouseBoardState(Generic[CrazyhouseBoardT], chess._BoardState[CrazyhouseBoardT]):
-    def __init__(self, board: CrazyhouseBoardT) -> None:
-        super().__init__(board)
+class _CrazyhouseBoardState:
+    def __init__(self, board: CrazyhouseBoard) -> None:
         self.pockets_w = board.pockets[chess.WHITE].copy()
         self.pockets_b = board.pockets[chess.BLACK].copy()
 
-    def restore(self, board: CrazyhouseBoardT) -> None:
-        super().restore(board)
+    def restore(self, board: CrazyhouseBoard) -> None:
         board.pockets[chess.WHITE] = self.pockets_w
         board.pockets[chess.BLACK] = self.pockets_b
 
@@ -870,8 +885,13 @@ class CrazyhouseBoard(chess.Board):
 
     def __init__(self, fen: Optional[str] = starting_fen, chess960: bool = False) -> None:
         self.pockets = [CrazyhousePocket(), CrazyhousePocket()]
+        self._crazyhouse_stack: List[_CrazyhouseBoardState] = []
         super().__init__(fen, chess960=chess960)
 
+    def clear_stack(self) -> None:
+        super().clear_stack()
+        self._crazyhouse_stack.clear()
+
     def reset_board(self) -> None:
         super().reset_board()
         self.pockets[chess.WHITE].reset()
@@ -882,10 +902,8 @@ def clear_board(self) -> None:
         self.pockets[chess.WHITE].reset()
         self.pockets[chess.BLACK].reset()
 
-    def _board_state(self: CrazyhouseBoardT) -> _CrazyhouseBoardState[CrazyhouseBoardT]:
-        return _CrazyhouseBoardState(self)
-
     def push(self, move: chess.Move) -> None:
+        self._crazyhouse_stack.append(_CrazyhouseBoardState(self))
         super().push(move)
         if move.drop:
             self.pockets[not self.turn].remove(move.drop)
@@ -896,6 +914,11 @@ def _push_capture(self, move: chess.Move, capture_square: chess.Square, piece_ty
         else:
             self.pockets[self.turn].add(piece_type)
 
+    def pop(self) -> chess.Move:
+        move = super().pop()
+        self._crazyhouse_stack.pop().restore(self)
+        return move
+
     def _is_halfmoves(self, n: int) -> bool:
         # No draw by 50-move rule or 75-move rule.
         return False
@@ -1028,8 +1051,19 @@ def copy(self: CrazyhouseBoardT, stack: Union[bool, int] = True) -> CrazyhouseBo
         board = super().copy(stack=stack)
         board.pockets[chess.WHITE] = self.pockets[chess.WHITE].copy()
         board.pockets[chess.BLACK] = self.pockets[chess.BLACK].copy()
+        if stack:
+            stack = len(self.move_stack) if stack is True else stack
+            board._crazyhouse_stack = self._crazyhouse_stack[-stack:]
         return board
 
+    def root(self: CrazyhouseBoardT) -> CrazyhouseBoardT:
+        if self._crazyhouse_stack:
+            board = super().root()
+            self._crazyhouse_stack[0].restore(board)
+            return board
+        else:
+            return self.copy(stack=False)
+
     def mirror(self: CrazyhouseBoardT) -> CrazyhouseBoardT:
         board = super().mirror()
         board.pockets[chess.WHITE] = self.pockets[chess.BLACK].copy()

From a652aaad5d22edd4cc078dba9214fb1d81789d7a Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 16:13:51 +0200
Subject: [PATCH 191/250] Add fallback for override decorator

---
 chess/engine.py | 60 ++++++++++++++++++++++++++++---------------------
 1 file changed, 34 insertions(+), 26 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index d1bbaaee1..f5fdff96a 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -24,6 +24,14 @@
 from types import TracebackType
 from typing import Any, Callable, Coroutine, Deque, Dict, Generator, Generic, Iterable, Iterator, List, Literal, Mapping, MutableMapping, Optional, Tuple, Type, TypedDict, TypeVar, Union
 
+try:
+    from typing import override
+except:
+    # Before Python 3.12
+    F = typing.TypeVar("F", bound=Callable[..., Any])
+    def override(fn: F, /) -> F:
+        return fn
+
 if typing.TYPE_CHECKING:
     from typing_extensions import Self
 
@@ -1317,16 +1325,16 @@ def __init__(self, engine: UciProtocol):
                 super().__init__(engine)
                 self.engine = engine
 
-            @typing.override
+            @override
             def check_initialized(self) -> None:
                 if self.engine.initialized:
                     raise EngineError("engine already initialized")
 
-            @typing.override
+            @override
             def start(self) -> None:
                 self.engine.send_line("uci")
 
-            @typing.override
+            @override
             def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if line.strip() == "uciok" and not self.result.done():
@@ -1415,7 +1423,7 @@ def __init__(self, engine: UciProtocol) -> None:
             def start(self) -> None:
                 self.engine._isready()
 
-            @typing.override
+            @override
             def line_received(self, line: str) -> None:
                 if line.strip() == "readyok":
                     self.result.set_result(None)
@@ -1574,7 +1582,7 @@ def __init__(self, engine: UciProtocol):
                 # MultiPV never change between pondering play commands.
                 engine.may_ponderhit = board if ponder and not engine.first_game and game == engine.game and not engine._changed_options(new_options) else None
 
-            @typing.override
+            @override
             def start(self) -> None:
                 self.info: InfoDict = {}
                 self.pondering: Optional[chess.Board] = None
@@ -1605,7 +1613,7 @@ def start(self) -> None:
                 else:
                     self._readyok()
 
-            @typing.override
+            @override
             def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token == "info":
@@ -1662,7 +1670,7 @@ def end(self) -> None:
                 engine.may_ponderhit = None
                 self.set_finished()
 
-            @typing.override
+            @override
             def cancel(self) -> None:
                 if self.engine.may_ponderhit and self.pondering and self.engine.may_ponderhit.move_stack == self.pondering.move_stack and self.engine.may_ponderhit == self.pondering:
                     self.engine.ponderhit = True
@@ -1670,7 +1678,7 @@ def cancel(self) -> None:
                 else:
                     self.engine.send_line("stop")
 
-            @typing.override
+            @override
             def engine_terminated(self, exc: Exception) -> None:
                 # Allow terminating engine while pondering.
                 if not self.result.done():
@@ -1705,7 +1713,7 @@ def start(self) -> None:
                 else:
                     self._readyok()
 
-            @typing.override
+            @override
             def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token == "info":
@@ -1738,11 +1746,11 @@ def _bestmove(self, arg: str) -> None:
                 self.set_finished()
                 self.analysis.set_finished(best)
 
-            @typing.override
+            @override
             def cancel(self) -> None:
                 self.engine.send_line("stop")
 
-            @typing.override
+            @override
             def engine_terminated(self, exc: Exception) -> None:
                 LOGGER.debug("%s: Closing analysis because engine has been terminated (error: %s)", self.engine, exc)
                 self.analysis.set_exception(exc)
@@ -1978,12 +1986,12 @@ def __init__(self, engine: XBoardProtocol):
                 super().__init__(engine)
                 self.engine = engine
 
-            @typing.override
+            @override
             def check_initialized(self) -> None:
                 if self.engine.initialized:
                     raise EngineError("engine already initialized")
 
-            @typing.override
+            @override
             def start(self) -> None:
                 self.engine.send_line("xboard")
                 self.engine.send_line("protover 2")
@@ -1993,7 +2001,7 @@ def timeout(self) -> None:
                 LOGGER.error("%s: Timeout during initialization", self.engine)
                 self.end()
 
-            @typing.override
+            @override
             def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token.startswith("#"):
@@ -2152,13 +2160,13 @@ def __init__(self, engine: XBoardProtocol):
                 super().__init__(engine)
                 self.engine = engine
 
-            @typing.override
+            @override
             def start(self) -> None:
                 n = id(self) & 0xffff
                 self.pong = f"pong {n}"
                 self.engine._ping(n)
 
-            @typing.override
+            @override
             def line_received(self, line: str) -> None:
                 if line == self.pong:
                     self.result.set_result(None)
@@ -2179,7 +2187,7 @@ def __init__(self, engine: XBoardProtocol):
                 super().__init__(engine)
                 self.engine = engine
 
-            @typing.override
+            @override
             def start(self) -> None:
                 self.play_result = PlayResult(None, None)
                 self.stopped = False
@@ -2221,7 +2229,7 @@ def start(self) -> None:
                 self.engine.send_line("hard" if ponder else "easy")
                 self.engine.send_line("go")
 
-            @typing.override
+            @override
             def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token == "move":
@@ -2301,7 +2309,7 @@ def _ping_after_move(self) -> None:
                     self.pong_after_move = f"pong {n}"
                     self.engine._ping(n)
 
-            @typing.override
+            @override
             def cancel(self) -> None:
                 if self.stopped:
                     return
@@ -2317,7 +2325,7 @@ def cancel(self) -> None:
                     self.pong_after_ponder = f"pong {n}"
                     self.engine._ping(n)
 
-            @typing.override
+            @override
             def engine_terminated(self, exc: Exception) -> None:
                 # Allow terminating engine while pondering.
                 if not self.result.done():
@@ -2337,7 +2345,7 @@ def __init__(self, engine: XBoardProtocol):
                 super().__init__(engine)
                 self.engine = engine
 
-            @typing.override
+            @override
             def start(self) -> None:
                 self.stopped = False
                 self.best_move: Optional[chess.Move] = None
@@ -2364,7 +2372,7 @@ def start(self) -> None:
                 else:
                     self.time_limit_handle = None
 
-            @typing.override
+            @override
             def line_received(self, line: str) -> None:
                 token, remaining = _next_token(line)
                 if token.startswith("#"):
@@ -2405,7 +2413,7 @@ def end(self) -> None:
                 self.set_finished()
                 self.analysis.set_finished(BestMove(self.best_move, None))
 
-            @typing.override
+            @override
             def cancel(self) -> None:
                 if self.stopped:
                     return
@@ -2418,7 +2426,7 @@ def cancel(self) -> None:
                 self.final_pong = f"pong {n}"
                 self.engine._ping(n)
 
-            @typing.override
+            @override
             def engine_terminated(self, exc: Exception) -> None:
                 LOGGER.debug("%s: Closing analysis because engine has been terminated (error: %s)", self.engine, exc)
 
@@ -2466,7 +2474,7 @@ def __init__(self, engine: XBoardProtocol):
                 super().__init__(engine)
                 self.engine = engine
 
-            @typing.override
+            @override
             def start(self) -> None:
                 self.engine._configure(options)
                 self.engine.target_config.update({name: value for name, value in options.items() if value is not None})
@@ -2497,7 +2505,7 @@ def __init__(self, engine: XBoardProtocol):
                 super().__init__(engine)
                 self.engine = engine
 
-            @typing.override
+            @override
             def start(self) -> None:
                 if game_ending and any(c in game_ending for c in "{}\n\r"):
                     raise EngineError(f"invalid line break or curly braces in game ending message: {game_ending!r}")

From 7a59a3683f33682c0c2c9b359469c8b9876ece9e Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 17:02:12 +0200
Subject: [PATCH 192/250] Import override from typing_extensions

---
 chess/engine.py | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index f5fdff96a..347acf297 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -24,10 +24,9 @@
 from types import TracebackType
 from typing import Any, Callable, Coroutine, Deque, Dict, Generator, Generic, Iterable, Iterator, List, Literal, Mapping, MutableMapping, Optional, Tuple, Type, TypedDict, TypeVar, Union
 
-try:
-    from typing import override
-except:
-    # Before Python 3.12
+if typing.TYPE_CHECKING:
+    from typing_extensions import override
+else:
     F = typing.TypeVar("F", bound=Callable[..., Any])
     def override(fn: F, /) -> F:
         return fn

From 571658baa358b97f3cb5104c3dfab33c6d962deb Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 17:25:03 +0200
Subject: [PATCH 193/250] Use typing_extensions.Self

---
 chess/__init__.py | 32 ++++++++++++++++----------------
 chess/engine.py   |  2 +-
 chess/pgn.py      |  7 +++++--
 chess/syzygy.py   |  7 ++++---
 chess/variant.py  | 18 +++++++++++-------
 5 files changed, 37 insertions(+), 29 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index b82f8559f..3553eee65 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -25,7 +25,7 @@
 from typing import ClassVar, Callable, Counter, Dict, Generic, Hashable, Iterable, Iterator, List, Literal, Mapping, Optional, SupportsInt, Tuple, Type, TypeVar, Union
 
 if typing.TYPE_CHECKING:
-    from typing_extensions import TypeAlias
+    from typing_extensions import Self, TypeAlias
 
 
 EnPassantSpec = Literal["legal", "fen", "xfen"]
@@ -1455,7 +1455,7 @@ def apply_transform(self, f: Callable[[Bitboard], Bitboard]) -> None:
         self.occupied = f(self.occupied)
         self.promoted = f(self.promoted)
 
-    def transform(self: BaseBoardT, f: Callable[[Bitboard], Bitboard]) -> BaseBoardT:
+    def transform(self, f: Callable[[Bitboard], Bitboard]) -> Self:
         """
         Returns a transformed copy of the board (without move stack)
         by applying a bitboard transformation function.
@@ -1473,11 +1473,11 @@ def transform(self: BaseBoardT, f: Callable[[Bitboard], Bitboard]) -> BaseBoardT
         board.apply_transform(f)
         return board
 
-    def apply_mirror(self: BaseBoardT) -> None:
+    def apply_mirror(self) -> None:
         self.apply_transform(flip_vertical)
         self.occupied_co[WHITE], self.occupied_co[BLACK] = self.occupied_co[BLACK], self.occupied_co[WHITE]
 
-    def mirror(self: BaseBoardT) -> BaseBoardT:
+    def mirror(self) -> Self:
         """
         Returns a mirrored copy of the board (without move stack).
 
@@ -1491,7 +1491,7 @@ def mirror(self: BaseBoardT) -> BaseBoardT:
         board.apply_mirror()
         return board
 
-    def copy(self: BaseBoardT) -> BaseBoardT:
+    def copy(self) -> Self:
         """Creates a copy of the board."""
         board = type(self)(None)
 
@@ -1509,10 +1509,10 @@ def copy(self: BaseBoardT) -> BaseBoardT:
 
         return board
 
-    def __copy__(self: BaseBoardT) -> BaseBoardT:
+    def __copy__(self) -> Self:
         return self.copy()
 
-    def __deepcopy__(self: BaseBoardT, memo: Dict[int, object]) -> BaseBoardT:
+    def __deepcopy__(self, memo: Dict[int, object]) -> Self:
         board = self.copy()
         memo[id(self)] = board
         return board
@@ -1694,7 +1694,7 @@ class Board(BaseBoard):
     manipulation.
     """
 
-    def __init__(self: BoardT, fen: Optional[str] = STARTING_FEN, *, chess960: bool = False) -> None:
+    def __init__(self, fen: Optional[str] = STARTING_FEN, *, chess960: bool = False) -> None:
         BaseBoard.__init__(self, None)
 
         self.chess960 = chess960
@@ -1786,7 +1786,7 @@ def clear_stack(self) -> None:
         self.move_stack.clear()
         self._stack.clear()
 
-    def root(self: BoardT) -> BoardT:
+    def root(self) -> Self:
         """Returns a copy of the root position."""
         if self._stack:
             board = type(self)(None, chess960=self.chess960)
@@ -2307,7 +2307,7 @@ def is_repetition(self, count: int = 3) -> bool:
     def _push_capture(self, move: Move, capture_square: Square, piece_type: PieceType, was_promoted: bool) -> None:
         pass
 
-    def push(self: BoardT, move: Move) -> None:
+    def push(self, move: Move) -> None:
         """
         Updates the position with the given *move* and puts it onto the
         move stack.
@@ -2428,7 +2428,7 @@ def push(self: BoardT, move: Move) -> None:
         # Swap turn.
         self.turn = not self.turn
 
-    def pop(self: BoardT) -> Move:
+    def pop(self) -> Move:
         """
         Restores the previous position and returns the last move from the stack.
 
@@ -2838,7 +2838,7 @@ def _validate_epd_opcode(self, opcode: str) -> None:
             if blacklisted in opcode:
                 raise ValueError(f"invalid character {blacklisted!r} in epd opcode: {opcode!r}")
 
-    def _parse_epd_ops(self: BoardT, operation_part: str, make_board: Callable[[], BoardT]) -> Dict[str, Union[None, str, int, float, Move, List[Move]]]:
+    def _parse_epd_ops(self, operation_part: str, make_board: Callable[[], Self]) -> Dict[str, Union[None, str, int, float, Move, List[Move]]]:
         operations: Dict[str, Union[None, str, int, float, Move, List[Move]]] = {}
         state = "opcode"
         opcode = ""
@@ -3831,16 +3831,16 @@ def apply_transform(self, f: Callable[[Bitboard], Bitboard]) -> None:
         self.ep_square = None if self.ep_square is None else msb(f(BB_SQUARES[self.ep_square]))
         self.castling_rights = f(self.castling_rights)
 
-    def transform(self: BoardT, f: Callable[[Bitboard], Bitboard]) -> BoardT:
+    def transform(self, f: Callable[[Bitboard], Bitboard]) -> Self:
         board = self.copy(stack=False)
         board.apply_transform(f)
         return board
 
-    def apply_mirror(self: BoardT) -> None:
+    def apply_mirror(self) -> None:
         super().apply_mirror()
         self.turn = not self.turn
 
-    def mirror(self: BoardT) -> BoardT:
+    def mirror(self) -> Self:
         """
         Returns a mirrored copy of the board.
 
@@ -3855,7 +3855,7 @@ def mirror(self: BoardT) -> BoardT:
         board.apply_mirror()
         return board
 
-    def copy(self: BoardT, *, stack: Union[bool, int] = True) -> BoardT:
+    def copy(self, *, stack: Union[bool, int] = True) -> Self:
         """
         Creates a copy of the board.
 
diff --git a/chess/engine.py b/chess/engine.py
index 347acf297..59b843b8b 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -970,7 +970,7 @@ def pipe_data_received(self, fd: int, data: Union[bytes, str]) -> None:
     def error_line_received(self, line: str) -> None:
         LOGGER.warning("%s: stderr >> %s", self, line)
 
-    def _line_received(self: Protocol, line: str) -> None:
+    def _line_received(self, line: str) -> None:
         LOGGER.debug("%s: >> %s", self, line)
 
         self.line_received(line)
diff --git a/chess/pgn.py b/chess/pgn.py
index 0d0879ae0..83ddaf8f5 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -15,6 +15,9 @@
 from typing import Any, Callable, Dict, Generic, Iterable, Iterator, List, Literal, Mapping, MutableMapping, Set, TextIO, Tuple, Type, TypeVar, Optional, Union
 from chess import Color, Square
 
+if typing.TYPE_CHECKING:
+    from typing_extensions import Self
+
 
 LOGGER = logging.getLogger(__name__)
 
@@ -1014,10 +1017,10 @@ def __iter__(self) -> Iterator[str]:
     def __len__(self) -> int:
         return len(self._tag_roster) + len(self._others)
 
-    def copy(self: HeadersT) -> HeadersT:
+    def copy(self) -> Self:
         return type(self)(self)
 
-    def __copy__(self: HeadersT) -> HeadersT:
+    def __copy__(self) -> Self:
         return self.copy()
 
     def __repr__(self) -> str:
diff --git a/chess/syzygy.py b/chess/syzygy.py
index 8ba1cbca4..77a6eeded 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -14,6 +14,9 @@
 from types import TracebackType
 from typing import Deque, Dict, Iterable, Iterator, List, Optional, Set, Tuple, Type, TypeVar, Union
 
+if typing.TYPE_CHECKING:
+    from typing_extensions import Self
+
 
 UINT64_BE = struct.Struct(">Q")
 UINT32 = struct.Struct("<I")
@@ -532,8 +535,6 @@ class PawnFileDataDtz:
     norm: List[int]
 
 
-TableT = TypeVar("TableT", bound="Table")
-
 class Table:
     size: List[int]
 
@@ -1025,7 +1026,7 @@ def close(self) -> None:
                     self.data.close()
                     self.data = None
 
-    def __enter__(self: TableT) -> TableT:
+    def __enter__(self) -> Self:
         return self
 
     def __exit__(self, exc_type: Optional[Type[BaseException]], exc_value: Optional[BaseException], traceback: Optional[TracebackType]) -> None:
diff --git a/chess/variant.py b/chess/variant.py
index 119a0402c..d28a6e964 100644
--- a/chess/variant.py
+++ b/chess/variant.py
@@ -2,9 +2,13 @@
 
 import chess
 import itertools
+import typing
 
 from typing import Dict, Generic, Hashable, Iterable, Iterator, List, Optional, Type, TypeVar, Union
 
+if typing.TYPE_CHECKING:
+    from typing_extensions import Self
+
 
 class SuicideBoard(chess.Board):
 
@@ -795,7 +799,7 @@ def _transposition_key(self) -> Hashable:
         return (super()._transposition_key(),
                 self.remaining_checks[chess.WHITE], self.remaining_checks[chess.BLACK])
 
-    def copy(self: ThreeCheckBoardT, stack: Union[bool, int] = True) -> ThreeCheckBoardT:
+    def copy(self, stack: Union[bool, int] = True) -> Self:
         board = super().copy(stack=stack)
         board.remaining_checks = self.remaining_checks.copy()
         if stack:
@@ -803,7 +807,7 @@ def copy(self: ThreeCheckBoardT, stack: Union[bool, int] = True) -> ThreeCheckBo
             board._three_check_stack = self._three_check_stack[-stack:]
         return board
 
-    def root(self: ThreeCheckBoardT) -> ThreeCheckBoardT:
+    def root(self) -> Self:
         if self._three_check_stack:
             board = super().root()
             self._three_check_stack[0].restore(board)
@@ -811,7 +815,7 @@ def root(self: ThreeCheckBoardT) -> ThreeCheckBoardT:
         else:
             return self.copy(stack=False)
 
-    def mirror(self: ThreeCheckBoardT) -> ThreeCheckBoardT:
+    def mirror(self) -> Self:
         board = super().mirror()
         board.remaining_checks[chess.WHITE] = self.remaining_checks[chess.BLACK]
         board.remaining_checks[chess.BLACK] = self.remaining_checks[chess.WHITE]
@@ -865,7 +869,7 @@ def __len__(self) -> int:
     def __repr__(self) -> str:
         return f"CrazyhousePocket('{self}')"
 
-    def copy(self: CrazyhousePocketT) -> CrazyhousePocketT:
+    def copy(self) -> Self:
         """Returns a copy of this pocket."""
         pocket = type(self)()
         pocket._pieces = self._pieces[:]
@@ -1047,7 +1051,7 @@ def epd(self, shredder: bool = False, en_passant: chess.EnPassantSpec = "legal",
         board_part, info_part = epd.split(" ", 1)
         return f"{board_part}[{str(self.pockets[chess.WHITE]).upper()}{self.pockets[chess.BLACK]}] {info_part}"
 
-    def copy(self: CrazyhouseBoardT, stack: Union[bool, int] = True) -> CrazyhouseBoardT:
+    def copy(self, stack: Union[bool, int] = True) -> Self:
         board = super().copy(stack=stack)
         board.pockets[chess.WHITE] = self.pockets[chess.WHITE].copy()
         board.pockets[chess.BLACK] = self.pockets[chess.BLACK].copy()
@@ -1056,7 +1060,7 @@ def copy(self: CrazyhouseBoardT, stack: Union[bool, int] = True) -> CrazyhouseBo
             board._crazyhouse_stack = self._crazyhouse_stack[-stack:]
         return board
 
-    def root(self: CrazyhouseBoardT) -> CrazyhouseBoardT:
+    def root(self) -> Self:
         if self._crazyhouse_stack:
             board = super().root()
             self._crazyhouse_stack[0].restore(board)
@@ -1064,7 +1068,7 @@ def root(self: CrazyhouseBoardT) -> CrazyhouseBoardT:
         else:
             return self.copy(stack=False)
 
-    def mirror(self: CrazyhouseBoardT) -> CrazyhouseBoardT:
+    def mirror(self) -> Self:
         board = super().mirror()
         board.pockets[chess.WHITE] = self.pockets[chess.BLACK].copy()
         board.pockets[chess.BLACK] = self.pockets[chess.WHITE].copy()

From f286d687e496123fb46d26ce3fd06bc0db505dc4 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 17:40:10 +0200
Subject: [PATCH 194/250] Towards pyright compatibility

---
 chess/__init__.py | 4 ++--
 chess/engine.py   | 7 +++++--
 chess/variant.py  | 8 ++++----
 3 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 3553eee65..55bd4cad2 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -1544,7 +1544,7 @@ def from_chess960_pos(cls: Type[BaseBoardT], scharnagl: int) -> BaseBoardT:
 
 class _BoardState:
 
-    def __init__(self, board: BoardT) -> None:
+    def __init__(self, board: Board) -> None:
         self.pawns = board.pawns
         self.knights = board.knights
         self.bishops = board.bishops
@@ -1564,7 +1564,7 @@ def __init__(self, board: BoardT) -> None:
         self.halfmove_clock = board.halfmove_clock
         self.fullmove_number = board.fullmove_number
 
-    def restore(self, board: BoardT) -> None:
+    def restore(self, board: Board) -> None:
         board.pawns = self.pawns
         board.knights = self.knights
         board.bishops = self.bishops
diff --git a/chess/engine.py b/chess/engine.py
index 59b843b8b..9a6a21f48 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -406,8 +406,10 @@ class Score(abc.ABC):
     """
 
     @typing.overload
+    @abc.abstractmethod
     def score(self, *, mate_score: int) -> int: ...
     @typing.overload
+    @abc.abstractmethod
     def score(self, *, mate_score: Optional[int] = None) -> Optional[int]: ...
     @abc.abstractmethod
     def score(self, *, mate_score: Optional[int] = None) -> Optional[int]:
@@ -2120,12 +2122,13 @@ def _new(self, board: chess.Board, game: object, options: ConfigMapping, opponen
             if self.config.get("computer"):
                 self.send_line("computer")
 
-        self.send_line("force")
+            self.send_line("force")
 
-        if new_game:
             fen = root.fen(shredder=board.chess960, en_passant="fen")
             if variant != "normal" or fen != chess.STARTING_FEN or board.chess960:
                 self.send_line(f"setboard {fen}")
+        else:
+            self.send_line("force")
 
         # Undo moves until common position.
         common_stack_len = 0
diff --git a/chess/variant.py b/chess/variant.py
index d28a6e964..6e9161dc8 100644
--- a/chess/variant.py
+++ b/chess/variant.py
@@ -133,7 +133,7 @@ def _transposition_key(self) -> Hashable:
         else:
             return super()._transposition_key()
 
-    def board_fen(self, promoted: Optional[bool] = None) -> str:
+    def board_fen(self, *, promoted: Optional[bool] = None) -> str:
         if promoted is None:
             promoted = self.has_chess960_castling_rights()
         return super().board_fen(promoted=promoted)
@@ -799,7 +799,7 @@ def _transposition_key(self) -> Hashable:
         return (super()._transposition_key(),
                 self.remaining_checks[chess.WHITE], self.remaining_checks[chess.BLACK])
 
-    def copy(self, stack: Union[bool, int] = True) -> Self:
+    def copy(self, *, stack: Union[bool, int] = True) -> Self:
         board = super().copy(stack=stack)
         board.remaining_checks = self.remaining_checks.copy()
         if stack:
@@ -1041,7 +1041,7 @@ def set_fen(self, fen: str) -> None:
         self.pockets[chess.WHITE] = white_pocket
         self.pockets[chess.BLACK] = black_pocket
 
-    def board_fen(self, promoted: Optional[bool] = None) -> str:
+    def board_fen(self, *, promoted: Optional[bool] = None) -> str:
         if promoted is None:
             promoted = True
         return super().board_fen(promoted=promoted)
@@ -1051,7 +1051,7 @@ def epd(self, shredder: bool = False, en_passant: chess.EnPassantSpec = "legal",
         board_part, info_part = epd.split(" ", 1)
         return f"{board_part}[{str(self.pockets[chess.WHITE]).upper()}{self.pockets[chess.BLACK]}] {info_part}"
 
-    def copy(self, stack: Union[bool, int] = True) -> Self:
+    def copy(self, *, stack: Union[bool, int] = True) -> Self:
         board = super().copy(stack=stack)
         board.pockets[chess.WHITE] = self.pockets[chess.WHITE].copy()
         board.pockets[chess.BLACK] = self.pockets[chess.BLACK].copy()

From 33eea7ca062ed7396590ac3408ec05121bba9483 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 18:01:47 +0200
Subject: [PATCH 195/250] Add changelog entries

---
 CHANGELOG.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index a4534badb..754b5d418 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -15,6 +15,13 @@ Changes:
   some 8 piece positions with decisive captures can be probed successfully.
 * The string wrapper returned by ``chess.svg`` functions now also implements
   ``_repr_html_``.
+* Significant changes to ``chess.engine`` internals:
+  ``chess.engine.BaseCommand`` methods other than the constructor no longer
+  receive ``engine: Protocol``.
+* Significant changes to board state internals: Subclasses of ``chess.Board``
+  can no longer hook into board state recording/restoration and need to
+  override relevant methods instead (``clear_stack``, ``copy``, ``root``,
+  ``push``, ``pop``).
 
 New features:
 

From caefd4dc6c25369750f6cc461885adfbbd52f09c Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 21:11:38 +0200
Subject: [PATCH 196/250] chess.engine._next_token() cosmetics

---
 chess/engine.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 9a6a21f48..c6698bc76 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -2650,7 +2650,8 @@ def _parse_xboard_post(line: str, root_board: chess.Board, selector: Info = INFO
 
 
 def _next_token(line: str) -> tuple[str, str]:
-    """Get the next token in a whitespace-delimited line of text.
+    """
+    Get the next token in a whitespace-delimited line of text.
 
     The result is returned as a 2-part tuple of strings.
 
@@ -2660,10 +2661,10 @@ def _next_token(line: str) -> tuple[str, str]:
     If the input line is not empty and not completely whitespace, then
     the first element of the returned tuple is a single word with
     leading and trailing whitespace removed. The second element is the
-    unchanged rest of the line."""
-
+    unchanged rest of the line.
+    """
     parts = line.split(maxsplit=1)
-    return (parts[0] if parts else "", parts[1] if len(parts) == 2 else "")
+    return parts[0] if parts else "", parts[1] if len(parts) == 2 else ""
 
 
 class BestMove:

From 71e7c31fba31554a2b174ff7fb88a77b61674543 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 22:21:28 +0200
Subject: [PATCH 197/250] Show actual state in engine command state assertions
 (#1049, #1071)

---
 chess/engine.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index c6698bc76..302aa2bbd 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -989,7 +989,7 @@ async def communicate(self, command_factory: Callable[[Self], BaseCommand[T]]) -
         if self.returncode.done():
             raise EngineTerminatedError(f"engine process dead (exit code: {self.returncode.result()})")
 
-        assert command.state == CommandState.NEW
+        assert command.state == CommandState.NEW, command.state
 
         if self.next_command is not None:
             self.next_command.result.cancel()
@@ -1253,7 +1253,7 @@ def _handle_exception(self, exc: Exception) -> None:
             self.finished.set_result(None)
 
     def set_finished(self) -> None:
-        assert self.state in [CommandState.ACTIVE, CommandState.CANCELLING]
+        assert self.state in [CommandState.ACTIVE, CommandState.CANCELLING], self.state
         if not self.result.done():
             self.result.set_exception(EngineError(f"engine command finished before returning result: {self!r}"))
         self.finished.set_result(None)
@@ -1261,12 +1261,12 @@ def set_finished(self) -> None:
 
     def _cancel(self) -> None:
         if self.state != CommandState.CANCELLING and self.state != CommandState.DONE:
-            assert self.state == CommandState.ACTIVE
+            assert self.state == CommandState.ACTIVE, self.state
             self.state = CommandState.CANCELLING
             self.cancel()
 
     def _start(self) -> None:
-        assert self.state == CommandState.NEW
+        assert self.state == CommandState.NEW, self.state
         self.state = CommandState.ACTIVE
         try:
             self.check_initialized()
@@ -1275,7 +1275,7 @@ def _start(self) -> None:
             self._handle_exception(err)
 
     def _line_received(self, line: str) -> None:
-        assert self.state in [CommandState.ACTIVE, CommandState.CANCELLING]
+        assert self.state in [CommandState.ACTIVE, CommandState.CANCELLING], self.state
         try:
             self.line_received(line)
         except EngineError as err:

From 7299216641f5bd0434c06111608892617aa39147 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 31 Jul 2024 22:37:53 +0200
Subject: [PATCH 198/250] Immediately dispatch line/termination/finish (fixes
 #1049, fixes #1071)

Avoids races between queued up lines and command finish callbacks.
---
 CHANGELOG.rst   |  2 ++
 chess/engine.py | 40 +++++++++++++++++++++++++++-------------
 test.py         | 18 ++++++++++++++++++
 3 files changed, 47 insertions(+), 13 deletions(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 754b5d418..9a0a16e6c 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -30,6 +30,8 @@ New features:
 
 Bugfixes:
 
+* Fix unsolicited engine output may cause assertion errors with regard to
+  command states.
 * Fix handling of whitespace in UCI engine communication.
 * For ``chess.Board.epd()`` and ``chess.Board.set_epd()``, require that EPD
   opcodes start with a letter.
diff --git a/chess/engine.py b/chess/engine.py
index 302aa2bbd..ccd6894d2 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -883,7 +883,7 @@ def write(self, data: bytes) -> None:
                 expectation, responses = self.expectations.popleft()
                 assert expectation == line, f"expected {expectation}, got: {line}"
                 if responses:
-                    self.protocol.pipe_data_received(1, "\n".join(responses + [""]).encode("utf-8"))
+                    self.protocol.loop.call_soon(self.protocol.pipe_data_received, 1, "\n".join(responses + [""]).encode("utf-8"))
 
     def get_pid(self) -> int:
         return id(self)
@@ -934,12 +934,12 @@ def connection_lost(self, exc: Optional[Exception]) -> None:
         LOGGER.debug("%s: Connection lost (exit code: %d, error: %s)", self, code, exc)
 
         # Terminate commands.
-        if self.command is not None:
-            self.command._engine_terminated(code)
-            self.command = None
-        if self.next_command is not None:
-            self.next_command._engine_terminated(code)
-            self.next_command = None
+        command, self.command = self.command, None
+        next_command, self.next_command = self.next_command, None
+        if command:
+            command._engine_terminated(code)
+        if next_command:
+            next_command._engine_terminated(code)
 
         self.returncode.set_result(code)
 
@@ -965,9 +965,9 @@ def pipe_data_received(self, fd: int, data: Union[bytes, str]) -> None:
                 LOGGER.warning("%s: >> %r (%s)", self, bytes(line_bytes), err)
             else:
                 if fd == 1:
-                    self.loop.call_soon(self._line_received, line)
+                    self._line_received(line)
                 else:
-                    self.loop.call_soon(self.error_line_received, line)
+                    self.error_line_received(line)
 
     def error_line_received(self, line: str) -> None:
         LOGGER.warning("%s: stderr >> %s", self, line)
@@ -998,7 +998,7 @@ async def communicate(self, command_factory: Callable[[Self], BaseCommand[T]]) -
 
         self.next_command = command
 
-        def previous_command_finished(_: Optional[asyncio.Future[None]]) -> None:
+        def previous_command_finished() -> None:
             self.command, self.next_command = self.next_command, None
             if self.command is not None:
                 cmd = self.command
@@ -1008,11 +1008,11 @@ def cancel_if_cancelled(result: asyncio.Future[T]) -> None:
                         cmd._cancel()
 
                 cmd.result.add_done_callback(cancel_if_cancelled)
-                cmd.finished.add_done_callback(previous_command_finished)
                 cmd._start()
+                cmd.add_finished_callback(previous_command_finished)
 
         if self.command is None:
-            previous_command_finished(None)
+            previous_command_finished()
         elif not self.command.result.done():
             self.command.result.cancel()
         elif not self.command.result.cancelled():
@@ -1228,6 +1228,17 @@ def __init__(self, engine: Protocol) -> None:
         self.result: asyncio.Future[T] = asyncio.Future()
         self.finished: asyncio.Future[None] = asyncio.Future()
 
+        self._finished_callbacks: List[Callable[[], None]] = []
+
+    def add_finished_callback(self, callback: Callable[[], None]) -> None:
+        self._finished_callbacks.append(callback)
+        self._dispatch_finished()
+
+    def _dispatch_finished(self) -> None:
+        if self.finished.done():
+            while self._finished_callbacks:
+                self._finished_callbacks.pop()()
+
     def _engine_terminated(self, code: int) -> None:
         hint = ", binary not compatible with cpu?" if code in [-4, 0xc000001d] else ""
         exc = EngineTerminatedError(f"engine process died unexpectedly (exit code: {code}{hint})")
@@ -1235,6 +1246,7 @@ def _engine_terminated(self, code: int) -> None:
             self.engine_terminated(exc)
         elif self.state == CommandState.CANCELLING:
             self.finished.set_result(None)
+            self._dispatch_finished()
         elif self.state == CommandState.NEW:
             self._handle_exception(exc)
 
@@ -1251,13 +1263,15 @@ def _handle_exception(self, exc: Exception) -> None:
 
         if not self.finished.done():
             self.finished.set_result(None)
+            self._dispatch_finished()
 
     def set_finished(self) -> None:
         assert self.state in [CommandState.ACTIVE, CommandState.CANCELLING], self.state
         if not self.result.done():
             self.result.set_exception(EngineError(f"engine command finished before returning result: {self!r}"))
-        self.finished.set_result(None)
         self.state = CommandState.DONE
+        self.finished.set_result(None)
+        self._dispatch_finished()
 
     def _cancel(self) -> None:
         if self.state != CommandState.CANCELLING and self.state != CommandState.DONE:
diff --git a/test.py b/test.py
index 00d766a03..438628b98 100755
--- a/test.py
+++ b/test.py
@@ -3527,6 +3527,24 @@ async def main():
 
         asyncio.run(main())
 
+    def test_uci_output_after_command(self):
+        async def main():
+            protocol = chess.engine.UciProtocol()
+            mock = chess.engine.MockTransport(protocol)
+
+            mock.expect("uci", [
+                "Arasan v24.0.0-10-g367aa9f Copyright 1994-2023 by Jon Dart.",
+                "All rights reserved.",
+                "id name Arasan v24.0.0-10-g367aa9f",
+                "uciok",
+                "info string out of do_all_pending, list size=0"
+            ])
+            await protocol.initialize()
+
+            mock.assert_done()
+
+        asyncio.run(main())
+
     def test_hiarcs_bestmove(self):
         async def main():
             protocol = chess.engine.UciProtocol()

From 7fa1f1825bc504ad50724e848b0e982b526c9f87 Mon Sep 17 00:00:00 2001
From: Lukas Malte Monnerjahn <lumo@uni-bremen.de>
Date: Thu, 5 Sep 2024 11:31:03 +0200
Subject: [PATCH 199/250] SVG: Align pieces, check mark, selected squares and
 arrows correctly when rendering a border #1103

---
 chess/svg.py | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/chess/svg.py b/chess/svg.py
index 2948b0b80..c665b171b 100644
--- a/chess/svg.py
+++ b/chess/svg.py
@@ -283,6 +283,7 @@ def board(board: Optional[chess.BaseBoard] = None, *,
     inner_border = 1 if borders and coordinates else 0
     outer_border = 1 if borders else 0
     margin = 15 if coordinates else 0
+    board_offset = inner_border + margin + outer_border
     full_size = 2 * outer_border + 2 * margin + 2 * inner_border + 8 * SQUARE_SIZE
     svg = _svg(full_size, size)
 
@@ -351,12 +352,12 @@ def board(board: Optional[chess.BaseBoard] = None, *,
     if coordinates:
         coord_color, coord_opacity = _select_color(colors, "coord")
         for file_index, file_name in enumerate(chess.FILE_NAMES):
-            x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + inner_border + margin + outer_border
+            x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + board_offset
             # Keep some padding here to separate the ascender from the border
             svg.append(_coord(file_name, x, 1, SQUARE_SIZE, margin, True, margin, color=coord_color, opacity=coord_opacity))
             svg.append(_coord(file_name, x, full_size - outer_border - margin, SQUARE_SIZE, margin, True, margin, color=coord_color, opacity=coord_opacity))
         for rank_index, rank_name in enumerate(chess.RANK_NAMES):
-            y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + inner_border + margin + outer_border
+            y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + board_offset
             svg.append(_coord(rank_name, 0, y, margin, SQUARE_SIZE, False, margin, color=coord_color, opacity=coord_opacity))
             svg.append(_coord(rank_name, full_size - outer_border - margin, y, margin, SQUARE_SIZE, False, margin, color=coord_color, opacity=coord_opacity))
 
@@ -365,8 +366,8 @@ def board(board: Optional[chess.BaseBoard] = None, *,
         file_index = chess.square_file(square)
         rank_index = chess.square_rank(square)
 
-        x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + inner_border + margin + outer_border
-        y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + inner_border + margin + outer_border
+        x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + board_offset
+        y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + board_offset
 
         cls = ["square", "light" if chess.BB_LIGHT_SQUARES & bb else "dark"]
         if lastmove and square in [lastmove.from_square, lastmove.to_square]:
@@ -406,8 +407,8 @@ def board(board: Optional[chess.BaseBoard] = None, *,
         file_index = chess.square_file(check)
         rank_index = chess.square_rank(check)
 
-        x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + margin
-        y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + margin
+        x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + board_offset
+        y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + board_offset
 
         ET.SubElement(svg, "rect", _attrs({
             "x": x,
@@ -423,8 +424,8 @@ def board(board: Optional[chess.BaseBoard] = None, *,
         file_index = chess.square_file(square)
         rank_index = chess.square_rank(square)
 
-        x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + margin
-        y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + margin
+        x = (file_index if orientation else 7 - file_index) * SQUARE_SIZE + board_offset
+        y = (7 - rank_index if orientation else rank_index) * SQUARE_SIZE + board_offset
 
         if board is not None:
             piece = board.piece_at(square)
@@ -463,10 +464,10 @@ def board(board: Optional[chess.BaseBoard] = None, *,
         head_file = chess.square_file(head)
         head_rank = chess.square_rank(head)
 
-        xtail = outer_border + margin + inner_border + (tail_file + 0.5 if orientation else 7.5 - tail_file) * SQUARE_SIZE
-        ytail = outer_border + margin + inner_border + (7.5 - tail_rank if orientation else tail_rank + 0.5) * SQUARE_SIZE
-        xhead = outer_border + margin + inner_border + (head_file + 0.5 if orientation else 7.5 - head_file) * SQUARE_SIZE
-        yhead = outer_border + margin + inner_border + (7.5 - head_rank if orientation else head_rank + 0.5) * SQUARE_SIZE
+        xtail = board_offset + (tail_file + 0.5 if orientation else 7.5 - tail_file) * SQUARE_SIZE
+        ytail = board_offset + (7.5 - tail_rank if orientation else tail_rank + 0.5) * SQUARE_SIZE
+        xhead = board_offset + (head_file + 0.5 if orientation else 7.5 - head_file) * SQUARE_SIZE
+        yhead = board_offset + (7.5 - head_rank if orientation else head_rank + 0.5) * SQUARE_SIZE
 
         if (head_file, head_rank) == (tail_file, tail_rank):
             ET.SubElement(svg, "circle", _attrs({

From 0e7fabc8ae0127a994aaece31e3c69a510cef527 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 27 Sep 2024 17:37:16 +0200
Subject: [PATCH 200/250] Test reading PGN with UTF-8 BOM

---
 data/pgn/utf8-bom.pgn | 26 ++++++++++++++++++++++++++
 test.py               | 12 ++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 data/pgn/utf8-bom.pgn

diff --git a/data/pgn/utf8-bom.pgn b/data/pgn/utf8-bom.pgn
new file mode 100644
index 000000000..665e7775a
--- /dev/null
+++ b/data/pgn/utf8-bom.pgn
@@ -0,0 +1,26 @@
+[Event "A"]
+[Site "?"]
+[Date "2024.04.25"]
+[Round "?"]
+[White "White vs 1...c5"]
+[Black "?"]
+[Result "*"]
+[ECO "A00"]
+[PlyCount "0"]
+[SourceVersionDate "2024.04.25"]
+
+ *
+
+[Event "B"]
+[Site "?"]
+[Date "2024.04.25"]
+[Round "?"]
+[White "White vs 1...c5"]
+[Black "?"]
+[Result "*"]
+[ECO "A00"]
+[PlyCount "0"]
+[SourceVersionDate "2024.04.25"]
+
+ *
+
diff --git a/test.py b/test.py
index 438628b98..6102eabdb 100755
--- a/test.py
+++ b/test.py
@@ -2947,6 +2947,18 @@ def end_variation(self):
         game = chess.pgn.read_game(io.StringIO(pgn)).accept(BlackVariationsOnly())
         self.assertEqual(game.accept(chess.pgn.StringExporter(headers=False)), expected_pgn)
 
+    def test_utf8_bom(self):
+        not_utf8_sig = "utf-8"
+        with open("data/pgn/utf8-bom.pgn", encoding=not_utf8_sig) as pgn:
+            game = chess.pgn.read_game(pgn)
+            self.assertEqual(game.headers["Event"], "A")
+
+            game = chess.pgn.read_game(pgn)
+            self.assertEqual(game.headers["Event"], "B")
+
+            game = chess.pgn.read_game(pgn)
+            self.assertEqual(game, None)
+
 
 @unittest.skipIf(sys.platform == "win32" and (3, 8, 0) <= sys.version_info < (3, 8, 1), "https://bugs.python.org/issue34679")
 class EngineTestCase(unittest.TestCase):

From c0d3c9171d22d0168a6cf7a584cdcf50909832e6 Mon Sep 17 00:00:00 2001
From: evidencebp <idanamit@gmail.com>
Date: Thu, 3 Oct 2024 14:33:20 +0300
Subject: [PATCH 201/250] chess\__init__.py  superfluous-parens

There are two such alerts in this file. One has two terms and the parentheses do not contribute to readability. The other term is longer and the parenthesis help to  readability   and therefore are kept.
---
 chess/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 55bd4cad2..9d6e869fe 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -3402,7 +3402,7 @@ def clean_castling_rights(self) -> Bitboard:
             if white_h_side and msb(white_h_side) < msb(white_king_mask):
                 white_h_side = 0
 
-            black_a_side = (black_castling & -black_castling)
+            black_a_side = black_castling & -black_castling
             black_h_side = BB_SQUARES[msb(black_castling)] if black_castling else BB_EMPTY
 
             if black_a_side and msb(black_a_side) > msb(black_king_mask):

From 30d991046908ce7c5a7929987c1c2081f68641b4 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 4 Oct 2024 18:33:54 +0200
Subject: [PATCH 202/250] Prepare 1.11.0

---
 CHANGELOG.rst     | 4 ++--
 chess/__init__.py | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 9a0a16e6c..296079f24 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,8 +1,8 @@
 Changelog for python-chess
 ==========================
 
-Upcoming in the next release
-----------------------------
+New in v1.11.0 (4th Oct 2024)
+-----------------------------
 
 Changes:
 
diff --git a/chess/__init__.py b/chess/__init__.py
index 9d6e869fe..147f24be7 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -11,7 +11,7 @@
 
 __email__ = "niklas.fiekas@backscattering.de"
 
-__version__ = "1.10.0"
+__version__ = "1.11.0"
 
 import collections
 import copy

From 46c28883f7846f87f419c5c83e7c61e3cdea5d36 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 4 Oct 2024 18:44:53 +0200
Subject: [PATCH 203/250] Revert "Removed unnecessary indentation blocks and
 updated conditional statements."

This reverts commit 4a6dd9a89b7810312ab4ea1cf255d1a501ae09ca.
---
 release.py | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/release.py b/release.py
index f2f7d81fa..d27ddf04e 100755
--- a/release.py
+++ b/release.py
@@ -10,7 +10,7 @@
 def system(command):
     print(command)
     exit_code = os.system(command)
-    if exit_code:
+    if exit_code != 0:
         sys.exit(exit_code)
 
 
@@ -21,7 +21,7 @@ def check_git():
 
     system("git fetch origin")
     behind = int(subprocess.check_output(["git", "rev-list", "--count", "master..origin/master"]))
-    if behind:
+    if behind > 0:
         print(f"master is {behind} commit(s) behind origin/master")
         sys.exit(1)
 
@@ -65,14 +65,15 @@ def tag_and_push():
             release_txt.write(headline + os.linesep)
 
             for line in changelog_file:
-                if line.startswith("-------") and not first_section:
-                    first_section = True
+                if not first_section:
+                    if line.startswith("-------"):
+                        first_section = True
                 else:
                     if line.startswith("-------"):
                         break
-
-                    if not prev_line.startswith("------"):
-                        release_txt.write(prev_line)
+                    else:
+                        if not prev_line.startswith("------"):
+                            release_txt.write(prev_line)
 
                 prev_line = line
 

From 08697b298d87e4fa01842bd82af96d71cb972c90 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 4 Oct 2024 18:57:48 +0200
Subject: [PATCH 204/250] Fix twine usage, stop uploading wheels

---
 release.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/release.py b/release.py
index d27ddf04e..4057ab785 100755
--- a/release.py
+++ b/release.py
@@ -97,9 +97,9 @@ def tag_and_push():
 def pypi():
     print("--- PYPI ---------------------------------------------------------")
     system("rm -rf build")
-    system("python3 setup.py sdist bdist_wheel")
+    system("python3 setup.py sdist")
     system("twine check dist/*")
-    system("twine upload --skip-existing")
+    system("twine upload --skip-existing dist/*")
 
 
 def github_release(tagname):

From 611221de07fa7679b5d00b712cf8472ce66e6b38 Mon Sep 17 00:00:00 2001
From: Mark Harrison <MarkZH@users.noreply.github.com>
Date: Mon, 7 Oct 2024 20:08:23 -0700
Subject: [PATCH 205/250] Fix error when parsing UCI options

The regex that splits a UCI option into parts did not include word
boundries, so words like "mini" would be split into "min" and "i",
leading to parse errors. This commit puts word boundries into the regex
to fix this.

Fixes #1112
---
 chess/engine.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index ccd6894d2..270e31e71 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1367,7 +1367,8 @@ def _option(self, arg: str) -> None:
                 var = []
 
                 parameters = list(option_parts.keys()) + ['var']
-                option_regex = fr"\s*({'|'.join(parameters)})\s*"
+                inner_regex = '|'.join([fr"\b{parameter}\b" for parameter in parameters])
+                option_regex = fr"\s*({inner_regex})\s*"
                 for token in re.split(option_regex, arg.strip()):
                     if token == "var" or (token in option_parts and not option_parts[token]):
                         current_parameter = token

From 54b18de726e0f1d06f89f35104c66ddeb527fac7 Mon Sep 17 00:00:00 2001
From: Mark Harrison <MarkZH@users.noreply.github.com>
Date: Mon, 7 Oct 2024 22:38:29 -0700
Subject: [PATCH 206/250] Add test for options fix

Test uses fairy-stockfish since that engine revealed the original bug.
---
 test.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test.py b/test.py
index 2a1df1c85..9903b208d 100755
--- a/test.py
+++ b/test.py
@@ -3142,6 +3142,11 @@ def test_sf_quit(self):
         with self.assertRaises(chess.engine.EngineTerminatedError), engine:
             engine.ping()
 
+    @catchAndSkip(FileNotFoundError, "need fairy-stockfish")
+    def test_fairy_sf_initialize(self):
+        with chess.engine.SimpleEngine.popen_uci("fairy-stockfish", setpgrp=True, debug=True):
+            pass
+
     @catchAndSkip(FileNotFoundError, "need crafty")
     def test_crafty_play_to_mate(self):
         logging.disable(logging.WARNING)

From ebb687c5dab328d91a055b1f63dabf6c28739ed2 Mon Sep 17 00:00:00 2001
From: Mark Harrison <MarkZH@users.noreply.github.com>
Date: Mon, 7 Oct 2024 22:58:59 -0700
Subject: [PATCH 207/250] Make test functional by installing fairy-stockfish

---
 .github/workflows/setup-ubuntu-latest.sh  | 3 +++
 .github/workflows/setup-windows-latest.sh | 6 +++++-
 tox.ini                                   | 1 +
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/setup-ubuntu-latest.sh b/.github/workflows/setup-ubuntu-latest.sh
index fae35b61a..10b8d1115 100755
--- a/.github/workflows/setup-ubuntu-latest.sh
+++ b/.github/workflows/setup-ubuntu-latest.sh
@@ -6,6 +6,9 @@ sudo apt-get install -y stockfish
 # Crafty
 sudo apt-get install -y crafty
 
+# Fairy-stockfish
+sudo apt-get install -y fairy-stockfish
+
 # Gaviota libgtb
 git clone https://github.com/michiguel/Gaviota-Tablebases.git --depth 1
 cd Gaviota-Tablebases
diff --git a/.github/workflows/setup-windows-latest.sh b/.github/workflows/setup-windows-latest.sh
index 815eb0db2..48037cbef 100755
--- a/.github/workflows/setup-windows-latest.sh
+++ b/.github/workflows/setup-windows-latest.sh
@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-echo Download ...
+echo Download stockfish ...
 choco install wget
 wget https://github.com/official-stockfish/Stockfish/releases/download/sf_16/stockfish-windows-x86-64-avx2.zip
 
@@ -10,3 +10,7 @@ echo Unzip ..
 echo Setup path ...
 mv stockfish-windows-x86-64-avx2.exe stockfish.exe
 pwd >> $GITHUB_PATH
+
+echo Download fairy-stockfish ...
+wget https://github.com/fairy-stockfish/Fairy-Stockfish/releases/latest/download/fairy-stockfish-largeboard_x86-64.exe
+mv fairy-stockfish-largeboard_x86-64.exe fairy-stockfish.exe
diff --git a/tox.ini b/tox.ini
index f629723cd..8d8033676 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,7 @@ passenv = LD_LIBRARY_PATH
 whitelist_externals =
     stockfish
     crafty
+    fairy-stockfish
 commands =
     python test.py --verbose
     python -m doctest README.rst --verbose

From c0ac01b784bf1c63abb325424ea9e7bb2cb3f44e Mon Sep 17 00:00:00 2001
From: Mark Harrison <MarkZH@users.noreply.github.com>
Date: Mon, 7 Oct 2024 23:13:27 -0700
Subject: [PATCH 208/250] Add test using MockTransport

---
 test.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/test.py b/test.py
index 9903b208d..e490daa90 100755
--- a/test.py
+++ b/test.py
@@ -3147,6 +3147,21 @@ def test_fairy_sf_initialize(self):
         with chess.engine.SimpleEngine.popen_uci("fairy-stockfish", setpgrp=True, debug=True):
             pass
 
+    def test_uci_option_parse(self):
+        async def main():
+            protocol = chess.engine.UciProtocol()
+            mock = chess.engine.MockTransport(protocol)
+
+            mock.expect("uci", ["option name UCI_Variant type combo default chess var bughouse var chess var mini var minishogi var threekings", "uciok"])
+            await protocol.initialize()
+            mock.assert_done()
+
+            mock.expect("isready", ["readyok"])
+            await protocol.ping()
+            mock.assert_done()
+
+        asyncio.run(main())
+
     @catchAndSkip(FileNotFoundError, "need crafty")
     def test_crafty_play_to_mate(self):
         logging.disable(logging.WARNING)

From fa4f0148f683c8e59ffa762f93045f9edfc69994 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Tue, 8 Oct 2024 22:07:21 +0200
Subject: [PATCH 209/250] Merge pull request #1113 from MarkZH/options-fix

Fix error when parsing UCI options
---
 .github/workflows/setup-ubuntu-latest.sh  |  3 +++
 .github/workflows/setup-windows-latest.sh |  6 +++++-
 chess/engine.py                           |  3 ++-
 test.py                                   | 20 ++++++++++++++++++++
 tox.ini                                   |  1 +
 5 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/setup-ubuntu-latest.sh b/.github/workflows/setup-ubuntu-latest.sh
index fae35b61a..10b8d1115 100755
--- a/.github/workflows/setup-ubuntu-latest.sh
+++ b/.github/workflows/setup-ubuntu-latest.sh
@@ -6,6 +6,9 @@ sudo apt-get install -y stockfish
 # Crafty
 sudo apt-get install -y crafty
 
+# Fairy-stockfish
+sudo apt-get install -y fairy-stockfish
+
 # Gaviota libgtb
 git clone https://github.com/michiguel/Gaviota-Tablebases.git --depth 1
 cd Gaviota-Tablebases
diff --git a/.github/workflows/setup-windows-latest.sh b/.github/workflows/setup-windows-latest.sh
index 815eb0db2..48037cbef 100755
--- a/.github/workflows/setup-windows-latest.sh
+++ b/.github/workflows/setup-windows-latest.sh
@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-echo Download ...
+echo Download stockfish ...
 choco install wget
 wget https://github.com/official-stockfish/Stockfish/releases/download/sf_16/stockfish-windows-x86-64-avx2.zip
 
@@ -10,3 +10,7 @@ echo Unzip ..
 echo Setup path ...
 mv stockfish-windows-x86-64-avx2.exe stockfish.exe
 pwd >> $GITHUB_PATH
+
+echo Download fairy-stockfish ...
+wget https://github.com/fairy-stockfish/Fairy-Stockfish/releases/latest/download/fairy-stockfish-largeboard_x86-64.exe
+mv fairy-stockfish-largeboard_x86-64.exe fairy-stockfish.exe
diff --git a/chess/engine.py b/chess/engine.py
index ccd6894d2..270e31e71 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1367,7 +1367,8 @@ def _option(self, arg: str) -> None:
                 var = []
 
                 parameters = list(option_parts.keys()) + ['var']
-                option_regex = fr"\s*({'|'.join(parameters)})\s*"
+                inner_regex = '|'.join([fr"\b{parameter}\b" for parameter in parameters])
+                option_regex = fr"\s*({inner_regex})\s*"
                 for token in re.split(option_regex, arg.strip()):
                     if token == "var" or (token in option_parts and not option_parts[token]):
                         current_parameter = token
diff --git a/test.py b/test.py
index 6102eabdb..9e2f9d166 100755
--- a/test.py
+++ b/test.py
@@ -3134,6 +3134,26 @@ def test_sf_quit(self):
         with self.assertRaises(chess.engine.EngineTerminatedError), engine:
             engine.ping()
 
+    @catchAndSkip(FileNotFoundError, "need fairy-stockfish")
+    def test_fairy_sf_initialize(self):
+        with chess.engine.SimpleEngine.popen_uci("fairy-stockfish", setpgrp=True, debug=True):
+            pass
+
+    def test_uci_option_parse(self):
+        async def main():
+            protocol = chess.engine.UciProtocol()
+            mock = chess.engine.MockTransport(protocol)
+
+            mock.expect("uci", ["option name UCI_Variant type combo default chess var bughouse var chess var mini var minishogi var threekings", "uciok"])
+            await protocol.initialize()
+            mock.assert_done()
+
+            mock.expect("isready", ["readyok"])
+            await protocol.ping()
+            mock.assert_done()
+
+        asyncio.run(main())
+
     @catchAndSkip(FileNotFoundError, "need crafty")
     def test_crafty_play_to_mate(self):
         logging.disable(logging.WARNING)
diff --git a/tox.ini b/tox.ini
index f629723cd..8d8033676 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,7 @@ passenv = LD_LIBRARY_PATH
 whitelist_externals =
     stockfish
     crafty
+    fairy-stockfish
 commands =
     python test.py --verbose
     python -m doctest README.rst --verbose

From ffc6da935642654ee13eda3bb649a8748531b960 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 9 Oct 2024 20:24:42 +0200
Subject: [PATCH 210/250] Prepare 1.11.1

---
 CHANGELOG.rst     | 8 ++++++++
 chess/__init__.py | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 296079f24..05b899a20 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,14 @@
 Changelog for python-chess
 ==========================
 
+New in v1.11.1 (9th Oct 2024)
+-----------------------------
+
+Bugfixes:
+
+* ``chess.engine``: Fix parsing of UCI options containing containing ``name``,
+  ``type``, ``default``, ``min``, or ``max``, e.g., ``mini``.
+
 New in v1.11.0 (4th Oct 2024)
 -----------------------------
 
diff --git a/chess/__init__.py b/chess/__init__.py
index 147f24be7..a6a66500e 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -11,7 +11,7 @@
 
 __email__ = "niklas.fiekas@backscattering.de"
 
-__version__ = "1.11.0"
+__version__ = "1.11.1"
 
 import collections
 import copy

From 7f123cb5dd858978de4a32b7d2c8f8ea71a3552c Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 9 Oct 2024 20:35:10 +0200
Subject: [PATCH 211/250] Remove chess.svg.board(..., flipped), use orientation
 (#659)

---
 chess/svg.py | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/chess/svg.py b/chess/svg.py
index c665b171b..7e8facf99 100644
--- a/chess/svg.py
+++ b/chess/svg.py
@@ -227,7 +227,6 @@ def board(board: Optional[chess.BaseBoard] = None, *,
           size: Optional[int] = None,
           coordinates: bool = True,
           colors: Dict[str, str] = {},
-          flipped: bool = False,
           borders: bool = False,
           style: Optional[str] = None) -> str:
     """
@@ -255,7 +254,6 @@ def board(board: Optional[chess.BaseBoard] = None, *,
         ``outer border``, ``arrow green``, ``arrow blue``, ``arrow red``,
         and ``arrow yellow``. Values should look like ``#ffce9e`` (opaque),
         or ``#15781B80`` (transparent).
-    :param flipped: Pass ``True`` to flip the board.
     :param borders: Pass ``True`` to enable a border around the board and,
        (if *coordinates* is enabled) the coordinate margin.
     :param style: A CSS stylesheet to include in the SVG image.
@@ -275,11 +273,7 @@ def board(board: Optional[chess.BaseBoard] = None, *,
 
     .. image:: ../docs/Ne4.svg
         :alt: 8/8/8/8/4N3/8/8/8
-
-    .. deprecated:: 1.1
-        Use *orientation* with a color instead of the *flipped* toggle.
     """
-    orientation ^= flipped
     inner_border = 1 if borders and coordinates else 0
     outer_border = 1 if borders else 0
     margin = 15 if coordinates else 0

From f2b0452389c4272948b253ac6266eb89ac85c179 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 9 Oct 2024 20:37:08 +0200
Subject: [PATCH 212/250] Remove deprecated chess.pgn.BaseVisitor.parse_san()
 (#659)

---
 chess/pgn.py | 18 +-----------------
 1 file changed, 1 insertion(+), 17 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index bded9ae5d..eddb6bc52 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -1104,22 +1104,6 @@ def begin_parse_san(self, board: chess.Board, san: str) -> Optional[SkipType]:
         """
         pass
 
-    def parse_san(self, board: chess.Board, san: str) -> chess.Move:
-        """
-        When the visitor is used by a parser, this is called to parse a move
-        in standard algebraic notation.
-
-        You can override the default implementation to work around specific
-        quirks of your input format.
-
-        .. deprecated:: 1.1
-            This method is very limited, because it is only called on moves
-            that the parser recognizes in the first place. Instead of adding
-            workarounds here, please report common quirks so that
-            they can be handled for everyone.
-        """
-        return board.parse_san(san)
-
     def visit_move(self, board: chess.Board, move: chess.Move) -> None:
         """
         Called for each move.
@@ -1751,7 +1735,7 @@ def read_game(handle: TextIO, *, Visitor: Any = GameBuilder) -> Any:
                 # Parse SAN tokens.
                 if visitor.begin_parse_san(board_stack[-1], token) is not SKIP:
                     try:
-                        move = visitor.parse_san(board_stack[-1], token)
+                        move = board_stack[-1].parse_san(token)
                     except ValueError as error:
                         visitor.handle_error(error)
                         skip_variation_depth = 1

From b2657ebc4768e2815cb8ddeb8c9ed13109332e15 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 9 Oct 2024 20:41:43 +0200
Subject: [PATCH 213/250] Remove deprecated chess.engine.Wdl tuple behavior
 (#659)

---
 chess/engine.py | 45 +--------------------------------------------
 test.py         |  2 +-
 2 files changed, 2 insertions(+), 45 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index 270e31e71..64a3926b7 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -720,16 +720,11 @@ def __str__(self) -> str:
 MateGiven = MateGivenType()
 
 
+@dataclasses.dataclass
 class PovWdl:
     """
     Relative :class:`win/draw/loss statistics <chess.engine.Wdl>` and the point
     of view.
-
-    .. deprecated:: 1.2
-        Behaves like a tuple
-        ``(wdl.relative.wins, wdl.relative.draws, wdl.relative.losses)``
-        for backwards compatibility. But it is recommended to use the provided
-        fields and methods instead.
     """
 
     relative: Wdl
@@ -738,10 +733,6 @@ class PovWdl:
     turn: Color
     """The point of view (``chess.WHITE`` or ``chess.BLACK``)."""
 
-    def __init__(self, relative: Wdl, turn: Color) -> None:
-        self.relative = relative
-        self.turn = turn
-
     def white(self) -> Wdl:
         """Gets the :class:`~chess.engine.Wdl` from White's point of view."""
         return self.pov(chess.WHITE)
@@ -763,30 +754,6 @@ def __bool__(self) -> bool:
     def __repr__(self) -> str:
         return "PovWdl({!r}, {})".format(self.relative, "WHITE" if self.turn else "BLACK")
 
-    # Unfortunately in python-chess v1.1.0, info["wdl"] was a simple tuple
-    # of the relative permille values, so we have to support __iter__,
-    # __len__, __getitem__, and equality comparisons with other tuples.
-    # Never mind the ordering, because that's not a sensible operation, anyway.
-
-    def __iter__(self) -> Iterator[int]:
-        yield self.relative.wins
-        yield self.relative.draws
-        yield self.relative.losses
-
-    def __len__(self) -> int:
-        return 3
-
-    def __getitem__(self, idx: int) -> int:
-        return (self.relative.wins, self.relative.draws, self.relative.losses)[idx]
-
-    def __eq__(self, other: object) -> bool:
-        if isinstance(other, PovWdl):
-            return self.white() == other.white()
-        elif isinstance(other, tuple):
-            return (self.relative.wins, self.relative.draws, self.relative.losses) == other
-        else:
-            return NotImplemented
-
 
 @dataclasses.dataclass
 class Wdl:
@@ -830,16 +797,6 @@ def expectation(self) -> float:
     def __bool__(self) -> bool:
         return bool(self.total())
 
-    def __iter__(self) -> Iterator[int]:
-        yield self.wins
-        yield self.draws
-        yield self.losses
-
-    def __reversed__(self) -> Iterator[int]:
-        yield self.losses
-        yield self.draws
-        yield self.wins
-
     def __pos__(self) -> Wdl:
         return self
 
diff --git a/test.py b/test.py
index e490daa90..68904a50e 100755
--- a/test.py
+++ b/test.py
@@ -3540,7 +3540,7 @@ def test_uci_info(self):
 
         # WDL (activated with UCI_ShowWDL).
         info = chess.engine._parse_uci_info("depth 1 seldepth 2 time 16 nodes 1 score cp 72 wdl 249 747 4 hashfull 0 nps 400 tbhits 0 multipv 1", board)
-        self.assertEqual(info["wdl"], (249, 747, 4))
+        self.assertEqual(info["wdl"].white(), chess.engine.Wdl(249, 747, 4))
 
     def test_uci_result(self):
         async def main():

From 6228bac55b8e680362f35e69c1c72a4d53d00cf4 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 12 Oct 2024 20:50:29 +0200
Subject: [PATCH 214/250] Update Sphinx

---
 docs/requirements.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/requirements.txt b/docs/requirements.txt
index 7516f64de..c04e3554a 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
-Sphinx==7.3.6
+Sphinx==8.1.2
 sphinxcontrib-jquery==4.1
-sphinx-rtd-theme==1.3.0
+sphinx-rtd-theme==3.0.1

From e2041699939d7ae08811fe7a1391e8910d5ec62a Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 13 Oct 2024 11:12:49 +0200
Subject: [PATCH 215/250] Towards passing pyright

---
 chess/__init__.py | 10 +++++++---
 chess/engine.py   |  2 +-
 chess/syzygy.py   |  1 +
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 147f24be7..4f5791f7c 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -1218,6 +1218,8 @@ def _set_chess960_pos(self, scharnagl: int) -> None:
         n, bb = divmod(n, 4)
         n, q = divmod(n, 6)
 
+        n1 = 0
+        n2 = 0
         for n1 in range(0, 4):
             n2 = n + (3 - n1) * (4 - n1) // 2 - 5
             if n1 < n2 and 1 <= n2 <= 4:
@@ -2394,7 +2396,7 @@ def push(self, move: Move) -> None:
             elif move.to_square == ep_square and abs(diff) in [7, 9] and not captured_piece_type:
                 # Remove pawns captured en passant.
                 down = -8 if self.turn == WHITE else 8
-                capture_square = ep_square + down
+                capture_square = move.to_square + down
                 captured_piece_type = self._remove_piece_at(capture_square)
 
         # Promotion.
@@ -3166,6 +3168,8 @@ def parse_san(self, san: str) -> Move:
 
         # Filter by original square.
         from_mask = BB_ALL
+        from_file = None
+        from_rank = None
         if match.group(2):
             from_file = FILE_NAMES.index(match.group(2))
             from_mask &= BB_FILES[from_file]
@@ -3177,7 +3181,7 @@ def parse_san(self, san: str) -> Move:
         if match.group(1):
             piece_type = PIECE_SYMBOLS.index(match.group(1).lower())
             from_mask &= self.pieces_mask(piece_type, self.turn)
-        elif match.group(2) and match.group(3):
+        elif from_file is not None and from_rank is not None:
             # Allow fully specified moves, even if they are not pawn moves,
             # including castling moves.
             move = self.find_move(square(from_file, from_rank), to_square, promotion)
@@ -3189,7 +3193,7 @@ def parse_san(self, san: str) -> Move:
             from_mask &= self.pawns
 
             # Do not allow pawn captures if file is not specified.
-            if not match.group(2):
+            if from_file is None:
                 from_mask &= BB_FILES[square_file(to_square)]
 
         # Match legal moves.
diff --git a/chess/engine.py b/chess/engine.py
index 64a3926b7..c961d0da1 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -826,7 +826,7 @@ def get_pipe_transport(self, fd: int) -> Optional[asyncio.BaseTransport]:
         assert fd == 0, f"expected 0 for stdin, got {fd}"
         return self
 
-    def write(self, data: bytes) -> None:
+    def write(self, data: bytes | bytearray | memoryview) -> None:
         self.stdin_buffer.extend(data)
         while b"\n" in self.stdin_buffer:
             line_bytes, self.stdin_buffer = self.stdin_buffer.split(b"\n", 1)
diff --git a/chess/syzygy.py b/chess/syzygy.py
index 77a6eeded..89f8c2596 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -780,6 +780,7 @@ def encode_piece(self, norm: List[int], pos: List[chess.Square], factor: List[in
                 for i in range(n):
                     pos[i] ^= 0x38
 
+            i = 0
             for i in range(n):
                 if offdiag(pos[i]):
                     break

From c42749dee7e06f1215ad159d58452d571810b8db Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 13 Oct 2024 11:49:05 +0200
Subject: [PATCH 216/250] Make chess.engine.Protocol.options an abstract
 property

---
 chess/engine.py | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index c961d0da1..3f1e0e399 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -852,9 +852,6 @@ def get_returncode(self) -> Optional[int]:
 class Protocol(asyncio.SubprocessProtocol, metaclass=abc.ABCMeta):
     """Protocol for communicating with a chess engine process."""
 
-    options: MutableMapping[str, Option]
-    """Dictionary of available options."""
-
     id: Dict[str, str]
     """
     Dictionary of information about the engine. Common keys are ``name``
@@ -981,6 +978,11 @@ def __repr__(self) -> str:
         pid = self.transport.get_pid() if self.transport is not None else "?"
         return f"<{type(self).__name__} (pid={pid})>"
 
+    @property
+    @abc.abstractmethod
+    def options(self) -> MutableMapping[str, Option]:
+        """Dictionary of available options."""
+
     @abc.abstractmethod
     async def initialize(self) -> None:
         """Initializes the engine."""
@@ -1281,7 +1283,7 @@ class UciProtocol(Protocol):
 
     def __init__(self) -> None:
         super().__init__()
-        self.options: UciOptionMap[Option] = UciOptionMap()
+        self._options: UciOptionMap[Option] = UciOptionMap()
         self.config: UciOptionMap[ConfigValue] = UciOptionMap()
         self.target_config: UciOptionMap[ConfigValue] = UciOptionMap()
         self.id = {}
@@ -1291,6 +1293,11 @@ def __init__(self) -> None:
         self.may_ponderhit: Optional[chess.Board] = None
         self.ponderhit = False
 
+    @property
+    @override
+    def options(self) -> UciOptionMap[Option]:
+        return self._options
+
     async def initialize(self) -> None:
         class UciInitializeCommand(BaseCommand[None]):
             def __init__(self, engine: UciProtocol):
@@ -1939,7 +1946,7 @@ def __init__(self) -> None:
         super().__init__()
         self.features: Dict[str, Union[int, str]] = {}
         self.id = {}
-        self.options = {
+        self._options = {
             "random": Option("random", "check", False, None, None, None),
             "computer": Option("computer", "check", False, None, None, None),
             "name": Option("name", "string", "", None, None, None),
@@ -1953,6 +1960,11 @@ def __init__(self) -> None:
         self.clock_id: object = None
         self.first_game = True
 
+    @property
+    @override
+    def options(self) -> Dict[str, Option]:
+        return self._options
+
     async def initialize(self) -> None:
         class XBoardInitializeCommand(BaseCommand[None]):
             def __init__(self, engine: XBoardProtocol):

From 7553d4115f69368e2d7bf07a90773cea128d7d11 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 13 Oct 2024 12:35:01 +0200
Subject: [PATCH 217/250] Make chess.pgn.GameNode pass pyright subtyping check

---
 chess/pgn.py | 65 ++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 45 insertions(+), 20 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index eddb6bc52..20e95de50 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -16,7 +16,11 @@
 from chess import Color, Square
 
 if typing.TYPE_CHECKING:
-    from typing_extensions import Self
+    from typing_extensions import Self, override
+else:
+    F = typing.TypeVar("F", bound=Callable[..., Any])
+    def override(fn: F, /) -> F:
+        return fn
 
 
 LOGGER = logging.getLogger(__name__)
@@ -192,15 +196,6 @@ def __init__(self, node: ChildNode, *, is_variation: bool = False, sidelines: bo
 
 
 class GameNode(abc.ABC):
-    parent: Optional[GameNode]
-    """The parent node or ``None`` if this is the root node of the game."""
-
-    move: Optional[chess.Move]
-    """
-    The move leading to this node or ``None`` if this is the root node of the
-    game.
-    """
-
     variations: List[ChildNode]
     """A list of child nodes."""
 
@@ -215,8 +210,6 @@ class GameNode(abc.ABC):
     nags: Set[int]
 
     def __init__(self, *, comment: Union[str, list[str]] = "") -> None:
-        self.parent = None
-        self.move = None
         self.variations = []
         self.comments = _standardize_comments(comment)
 
@@ -225,6 +218,19 @@ def __init__(self, *, comment: Union[str, list[str]] = "") -> None:
         self.starting_comments = []
         self.nags = set()
 
+    @property
+    @abc.abstractmethod
+    def parent(self) -> Optional[GameNode]:
+        """The parent node or ``None`` if this is the root node of the game."""
+
+    @property
+    @abc.abstractmethod
+    def move(self) -> Optional[chess.Move]:
+        """
+        The move leading to this node or ``None`` if this is the root node of
+        the game.
+        """
+
     @abc.abstractmethod
     def board(self) -> chess.Board:
         """
@@ -658,12 +664,6 @@ class ChildNode(GameNode):
     Extends :class:`~chess.pgn.GameNode`.
     """
 
-    parent: GameNode
-    """The parent node."""
-
-    move: chess.Move
-    """The move leading to this node."""
-
     starting_comments: list[str]
     """
     A comment for the start of a variation. Only nodes that
@@ -680,13 +680,25 @@ class ChildNode(GameNode):
 
     def __init__(self, parent: GameNode, move: chess.Move, *, comment: Union[str, list[str]] = "", starting_comment: Union[str, list[str]] = "", nags: Iterable[int] = []) -> None:
         super().__init__(comment=comment)
-        self.parent = parent
-        self.move = move
+        self._parent = parent
+        self._move = move
         self.parent.variations.append(self)
 
         self.nags.update(nags)
         self.starting_comments = _standardize_comments(starting_comment)
 
+    @property
+    @override
+    def parent(self) -> GameNode:
+        """The parent node."""
+        return self._parent
+
+    @property
+    @override
+    def move(self) -> chess.Move:
+        """The move leading to this node."""
+        return self._move
+
     def board(self) -> chess.Board:
         stack: List[chess.Move] = []
         node: GameNode = self
@@ -838,9 +850,21 @@ def __init__(self, headers: Optional[Union[Mapping[str, str], Iterable[Tuple[str
         self.headers = Headers(headers)
         self.errors = []
 
+    @property
+    @override
+    def parent(self) -> None:
+        return None
+
+    @property
+    @override
+    def move(self) -> None:
+        return None
+
+    @override
     def board(self) -> chess.Board:
         return self.headers.board()
 
+    @override
     def ply(self) -> int:
         # Optimization: Parse FEN only for custom starting positions.
         return self.board().ply() if "FEN" in self.headers else 0
@@ -873,6 +897,7 @@ def setup(self, board: Union[chess.Board, str]) -> None:
         else:
             self.headers.pop("Variant", None)
 
+    @override
     def accept(self, visitor: BaseVisitor[ResultT]) -> ResultT:
         """
         Traverses the game in PGN order using the given *visitor*. Returns

From f7736478cbe6e99bb77a7719bfafa79e9a40eef0 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 13 Oct 2024 12:35:28 +0200
Subject: [PATCH 218/250] Initialize board_stack even on skip_game path

---
 chess/pgn.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/chess/pgn.py b/chess/pgn.py
index 20e95de50..11d7aa760 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -1575,6 +1575,7 @@ def read_game(handle: TextIO, *, Visitor: Any = GameBuilder) -> Any:
     skipping_game = False
     managed_headers: Optional[Headers] = None
     unmanaged_headers: Optional[Headers] = None
+    board_stack: List[chess.Board] = []
 
     # Ignore leading empty lines and comments.
     line = handle.readline().lstrip("\ufeff")

From 0c8fed280f5d0ea237dc5a667081665d65412643 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 13 Oct 2024 12:42:13 +0200
Subject: [PATCH 219/250] Fix builder constructor typing

---
 chess/pgn.py | 35 +++++++++++++++++++++++++++++++++--
 1 file changed, 33 insertions(+), 2 deletions(-)

diff --git a/chess/pgn.py b/chess/pgn.py
index 11d7aa760..f40980d48 100644
--- a/chess/pgn.py
+++ b/chess/pgn.py
@@ -699,6 +699,7 @@ def move(self) -> chess.Move:
         """The move leading to this node."""
         return self._move
 
+    @override
     def board(self) -> chess.Board:
         stack: List[chess.Move] = []
         node: GameNode = self
@@ -714,6 +715,7 @@ def board(self) -> chess.Board:
 
         return board
 
+    @override
     def ply(self) -> int:
         ply = 0
         node: GameNode = self
@@ -744,6 +746,7 @@ def uci(self, *, chess960: Optional[bool] = None) -> str:
         """
         return self.parent.board().uci(self.move, chess960=chess960)
 
+    @override
     def end(self) -> ChildNode:
         """
         Follows the main variation to the end and returns the last node.
@@ -801,6 +804,7 @@ def _accept(self, parent_board: chess.Board, visitor: BaseVisitor[ResultT], *, s
             else:
                 stack.pop()
 
+    @override
     def accept(self, visitor: BaseVisitor[ResultT]) -> ResultT:
         self._accept(self.parent.board(), visitor, sidelines=False)
         return visitor.result()
@@ -1192,10 +1196,11 @@ class GameBuilder(BaseVisitor[GameT]):
     @typing.overload
     def __init__(self: GameBuilder[Game]) -> None: ...
     @typing.overload
-    def __init__(self: GameBuilder[GameT], *, Game: Type[GameT]) -> None: ...
+    def __init__(self, *, Game: Type[GameT]) -> None: ...
     def __init__(self, *, Game: Any = Game) -> None:
         self.Game = Game
 
+    @override
     def begin_game(self) -> None:
         self.game: GameT = self.Game()
 
@@ -1203,28 +1208,35 @@ def begin_game(self) -> None:
         self.starting_comments: list[str] = []
         self.in_variation = False
 
+    @override
     def begin_headers(self) -> Headers:
         return self.game.headers
 
+    @override
     def visit_header(self, tagname: str, tagvalue: str) -> None:
         self.game.headers[tagname] = tagvalue
 
+    @override
     def visit_nag(self, nag: int) -> None:
         self.variation_stack[-1].nags.add(nag)
 
+    @override
     def begin_variation(self) -> None:
         parent = self.variation_stack[-1].parent
         assert parent is not None, "begin_variation called, but root node on top of stack"
         self.variation_stack.append(parent)
         self.in_variation = False
 
+    @override
     def end_variation(self) -> None:
         self.variation_stack.pop()
 
+    @override
     def visit_result(self, result: str) -> None:
         if self.game.headers.get("Result", "*") == "*":
             self.game.headers["Result"] = result
 
+    @override
     def visit_comment(self, comment: Union[str, list[str]]) -> None:
         comments = _standardize_comments(comment)
         if self.in_variation or (self.variation_stack[-1].parent is None and self.variation_stack[-1].is_end()):
@@ -1238,12 +1250,14 @@ def visit_comment(self, comment: Union[str, list[str]]) -> None:
             self.starting_comments.extend(comments)
             self.starting_comments = list(filter(None, self.starting_comments))
 
+    @override
     def visit_move(self, board: chess.Board, move: chess.Move) -> None:
         self.variation_stack[-1] = self.variation_stack[-1].add_variation(move)
         self.variation_stack[-1].starting_comments = self.starting_comments
         self.starting_comments = []
         self.in_variation = True
 
+    @override
     def handle_error(self, error: Exception) -> None:
         """
         Populates :data:`chess.pgn.Game.errors` with encountered errors and
@@ -1277,6 +1291,7 @@ def handle_error(self, error: Exception) -> None:
         LOGGER.error("%s while parsing %r", error, self.game)
         self.game.errors.append(error)
 
+    @override
     def result(self) -> GameT:
         """
         Returns the visited :class:`~chess.pgn.Game()`.
@@ -1290,20 +1305,24 @@ class HeadersBuilder(BaseVisitor[HeadersT]):
     @typing.overload
     def __init__(self: HeadersBuilder[Headers]) -> None: ...
     @typing.overload
-    def __init__(self: HeadersBuilder[HeadersT], *, Headers: Type[Headers]) -> None: ...
+    def __init__(self, *, Headers: Type[HeadersT]) -> None: ...
     def __init__(self, *, Headers: Any = Headers) -> None:
         self.Headers = Headers
 
+    @override
     def begin_headers(self) -> HeadersT:
         self.headers: HeadersT = self.Headers({})
         return self.headers
 
+    @override
     def visit_header(self, tagname: str, tagvalue: str) -> None:
         self.headers[tagname] = tagvalue
 
+    @override
     def end_headers(self) -> SkipType:
         return SKIP
 
+    @override
     def result(self) -> HeadersT:
         return self.headers
 
@@ -1314,20 +1333,25 @@ class BoardBuilder(BaseVisitor[chess.Board]):
     on the move stack.
     """
 
+    @override
     def begin_game(self) -> None:
         self.skip_variation_depth = 0
 
+    @override
     def begin_variation(self) -> SkipType:
         self.skip_variation_depth += 1
         return SKIP
 
+    @override
     def end_variation(self) -> None:
         self.skip_variation_depth = max(self.skip_variation_depth - 1, 0)
 
+    @override
     def visit_board(self, board: chess.Board) -> None:
         if not self.skip_variation_depth:
             self.board = board
 
+    @override
     def result(self) -> chess.Board:
         return self.board
 
@@ -1335,15 +1359,19 @@ def result(self) -> chess.Board:
 class SkipVisitor(BaseVisitor[Literal[True]]):
     """Skips a game."""
 
+    @override
     def begin_game(self) -> SkipType:
         return SKIP
 
+    @override
     def end_headers(self) -> SkipType:
         return SKIP
 
+    @override
     def begin_variation(self) -> SkipType:
         return SKIP
 
+    @override
     def result(self) -> Literal[True]:
         return True
 
@@ -1458,6 +1486,7 @@ class StringExporter(StringExporterMixin, BaseVisitor[str]):
     There will be no newline characters at the end of the string.
     """
 
+    @override
     def result(self) -> str:
         if self.current_line:
             return "\n".join(itertools.chain(self.lines, [self.current_line.rstrip()])).rstrip()
@@ -1489,6 +1518,7 @@ def __init__(self, handle: TextIO, *, columns: Optional[int] = 80, headers: bool
         super().__init__(columns=columns, headers=headers, comments=comments, variations=variations)
         self.handle = handle
 
+    @override
     def begin_game(self) -> None:
         self.written: int = 0
         super().begin_game()
@@ -1504,6 +1534,7 @@ def write_line(self, line: str = "") -> None:
         self.written += self.handle.write(line.rstrip())
         self.written += self.handle.write("\n")
 
+    @override
     def result(self) -> int:
         return self.written
 

From ef13fdbfdb03a10e520a834b32e8a6cac988323a Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 13 Oct 2024 12:44:42 +0200
Subject: [PATCH 220/250] Run pyright in CI

---
 .github/workflows/test.yml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 576d8b491..ffe0c4bc5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -35,7 +35,7 @@ jobs:
       - run: python examples/perft/perft.py -t 1 --variant horde examples/perft/horde.perft
       - run: python examples/perft/perft.py -t 1 --variant crazyhouse examples/perft/crazyhouse.perft
       - run: python examples/perft/perft.py -t 1 --variant 3check examples/perft/3check.perft
-  mypy:
+  typing:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
@@ -50,6 +50,9 @@ jobs:
       - run: pip install mypy
       - run: python -m mypy --strict chess
       - run: python -m mypy --strict examples/**/*.py
+      - run: pip install pyright
+      - run: python -m pyright chess
+      - run: python -m pyright --strict examples/**/*.py
   readme:
     runs-on: ubuntu-latest
     steps:

From 100b1c8b21846c0a9db2f237621368e02294da5f Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 13 Oct 2024 12:45:44 +0200
Subject: [PATCH 221/250] Fixup pyright usage in CI

---
 .github/workflows/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ffe0c4bc5..035b7f3d1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -52,7 +52,7 @@ jobs:
       - run: python -m mypy --strict examples/**/*.py
       - run: pip install pyright
       - run: python -m pyright chess
-      - run: python -m pyright --strict examples/**/*.py
+      - run: python -m pyright examples/**/*.py
   readme:
     runs-on: ubuntu-latest
     steps:

From 4549a1dd5d58661c89ea7a0fd33ae2a3d8e308d8 Mon Sep 17 00:00:00 2001
From: Alexander Lyashuk <mooskagh@gmail.com>
Date: Sat, 26 Oct 2024 11:36:00 +0200
Subject: [PATCH 222/250] Add 'movesleft' parameter to UCI info parsing

---
 chess/engine.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 3f1e0e399..b979b278f 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -1771,7 +1771,8 @@ def _parse_uci_info(arg: str, root_board: chess.Board, selector: Info = INFO_ALL
         if parameter == "string":
             info["string"] = remaining_line
             break
-        elif parameter in ["depth", "seldepth", "nodes", "multipv", "currmovenumber", "hashfull", "nps", "tbhits", "cpuload"]:
+        elif parameter in ["depth", "seldepth", "nodes", "multipv", "currmovenumber",
+                           "hashfull", "nps", "tbhits", "cpuload", "movesleft"]:
             try:
                 number, remaining_line = _next_token(remaining_line)
                 info[parameter] = int(number)  # type: ignore

From f1676d51191dbc36cc7d03b4de4da34526e99f88 Mon Sep 17 00:00:00 2001
From: Alexander Lyashuk <mooskagh@gmail.com>
Date: Sat, 26 Oct 2024 11:41:50 +0200
Subject: [PATCH 223/250] Added a test.

---
 test.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/test.py b/test.py
index 68904a50e..6db84d254 100755
--- a/test.py
+++ b/test.py
@@ -3508,14 +3508,15 @@ def test_uci_info(self):
         self.assertEqual(info["seldepth"], 8)
         self.assertEqual(info["score"], chess.engine.PovScore(chess.engine.Mate(+3), chess.WHITE))
 
-        # Info: tbhits, cpuload, hashfull, time, nodes, nps.
-        info = chess.engine._parse_uci_info("tbhits 123 cpuload 456 hashfull 789 time 987 nodes 654 nps 321", board)
+        # Info: tbhits, cpuload, hashfull, time, nodes, nps, movesleft.
+        info = chess.engine._parse_uci_info("tbhits 123 cpuload 456 hashfull 789 movesleft 42 time 987 nodes 654 nps 321", board)
         self.assertEqual(info["tbhits"], 123)
         self.assertEqual(info["cpuload"], 456)
         self.assertEqual(info["hashfull"], 789)
         self.assertEqual(info["time"], 0.987)
         self.assertEqual(info["nodes"], 654)
         self.assertEqual(info["nps"], 321)
+        self.assertEqual(info["movesleft"], 42)
 
         # Hakkapeliitta double spaces.
         info = chess.engine._parse_uci_info("depth 10 seldepth 9 score cp 22  time 17 nodes 48299 nps 2683000 tbhits 0", board)

From 518d662e5467c13630cfe98f9b99e720775d80b1 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 9 Nov 2024 13:20:59 +0100
Subject: [PATCH 224/250] Accept a1a1 as UCI null move (used by lc0, closes
 #1119)

---
 chess/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 4f5791f7c..fdd52ed07 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -705,7 +705,7 @@ def from_uci(cls, uci: str) -> Move:
                 promotion = PIECE_SYMBOLS.index(uci[4]) if len(uci) == 5 else None
             except ValueError:
                 raise InvalidMoveError(f"invalid uci: {uci!r}")
-            if from_square == to_square:
+            if from_square == to_square and from_square != A1:
                 raise InvalidMoveError(f"invalid uci (use 0000 for null moves): {uci!r}")
             return cls(from_square, to_square, promotion=promotion)
         else:

From 78c765b4dd1741df3a569c3cd96a079d06298823 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 20 Dec 2024 20:25:50 +0100
Subject: [PATCH 225/250] Simplify portable os.O_BINARY access

---
 chess/polyglot.py | 2 +-
 chess/syzygy.py   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/chess/polyglot.py b/chess/polyglot.py
index 44a68caa5..a7d6807c4 100644
--- a/chess/polyglot.py
+++ b/chess/polyglot.py
@@ -324,7 +324,7 @@ class MemoryMappedReader:
     """Maps a Polyglot opening book to memory."""
 
     def __init__(self, filename: StrOrBytesPath) -> None:
-        fd = os.open(filename, os.O_RDONLY | os.O_BINARY if hasattr(os, "O_BINARY") else os.O_RDONLY)
+        fd = os.open(filename, os.O_RDONLY | getattr(os, "O_BINARY", 0))
         try:
             self.mmap: Union[mmap.mmap, _EmptyMmap] = mmap.mmap(fd, 0, access=mmap.ACCESS_READ)
         except (ValueError, OSError):
diff --git a/chess/syzygy.py b/chess/syzygy.py
index 89f8c2596..5ead9922c 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -587,7 +587,7 @@ def __init__(self, path: str, *, variant: Type[chess.Board] = chess.Board) -> No
 
     def init_mmap(self) -> None:
         if self.data is None:
-            fd = os.open(self.path, os.O_RDONLY | os.O_BINARY if hasattr(os, "O_BINARY") else os.O_RDONLY)
+            fd = os.open(self.path, os.O_RDONLY | getattr(os, "O_BINARY", 0))
             try:
                 data = mmap.mmap(fd, 0, access=mmap.ACCESS_READ)
             finally:

From ea87e07a22e65bc3b541f2beaefd83e4477d20d1 Mon Sep 17 00:00:00 2001
From: Manan <manan.yadav02@gmail.com>
Date: Tue, 31 Dec 2024 18:09:35 +0530
Subject: [PATCH 226/250] Update __init__.py

Removed redundant `Generic` import from `chess/__init__.py`
---
 chess/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index b01a2e478..8d0a68258 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -22,7 +22,7 @@
 import itertools
 import typing
 
-from typing import ClassVar, Callable, Counter, Dict, Generic, Hashable, Iterable, Iterator, List, Literal, Mapping, Optional, SupportsInt, Tuple, Type, TypeVar, Union
+from typing import ClassVar, Callable, Counter, Dict, Hashable, Iterable, Iterator, List, Literal, Mapping, Optional, SupportsInt, Tuple, Type, TypeVar, Union
 
 if typing.TYPE_CHECKING:
     from typing_extensions import Self, TypeAlias

From 5f76cb296a10a81672cbf60368a62e2c85adedec Mon Sep 17 00:00:00 2001
From: Adrien Barbaresi <barbaresi@bbaw.de>
Date: Sun, 5 Jan 2025 17:42:33 +0100
Subject: [PATCH 227/250] gaviota.py: simplify and improve code

---
 chess/gaviota.py | 553 +++++++++++++++--------------------------------
 1 file changed, 179 insertions(+), 374 deletions(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index 39173b593..8cfd40d1e 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -11,11 +11,12 @@
 import struct
 import typing
 
-import chess
-
+from itertools import accumulate
 from types import TracebackType
 from typing import BinaryIO, Callable, Dict, List, Optional, Tuple, Type, Union
 
+import chess
+
 
 LOGGER = logging.getLogger(__name__)
 
@@ -109,30 +110,19 @@ def idx_is_empty(x: int) -> int:
 
 def flip_type(x: chess.Square, y: chess.Square) -> int:
     ret = 0
+    file_x, rank_x = chess.square_file(x), chess.square_rank(x)
+    file_y, rank_y = chess.square_file(y), chess.square_rank(y)
 
-    if chess.square_file(x) > 3:
-        x = flip_we(x)
-        y = flip_we(y)
+    if file_x > 3:
+        x, y = flip_we(x), flip_we(y)
         ret |= 1
 
-    if chess.square_rank(x) > 3:
-        x = flip_ns(x)
-        y = flip_ns(y)
+    if rank_x > 3:
+        x, y = flip_ns(x), flip_ns(y)
         ret |= 2
 
-    rowx = chess.square_rank(x)
-    colx = chess.square_file(x)
-
-    if rowx > colx:
-        x = flip_nw_se(x)
-        y = flip_nw_se(y)
-        ret |= 4
-
-    rowy = chess.square_rank(y)
-    coly = chess.square_file(y)
-    if rowx == colx and rowy > coly:
-        x = flip_nw_se(x)
-        y = flip_nw_se(y)
+    if (rank_x, file_x) > (rank_y, file_y):
+        x, y = flip_nw_se(x), flip_nw_se(y)
         ret |= 4
 
     return ret
@@ -145,7 +135,6 @@ def init_flipt() -> List[List[int]]:
 
 def init_pp48_idx() -> Tuple[List[List[int]], List[int], List[int]]:
     MAX_I = MAX_J = 48
-    idx = 0
     pp48_idx = [[-1] * MAX_J for _ in range(MAX_I)]
     pp48_sq_x = [NOSQUARE] * MAX_PP48_INDEX
     pp48_sq_y = [NOSQUARE] * MAX_PP48_INDEX
@@ -157,10 +146,8 @@ def init_pp48_idx() -> Tuple[List[List[int]], List[int], List[int]]:
             j = flip_we(flip_ns(b)) - 8
 
             if idx_is_empty(pp48_idx[i][j]):
-                pp48_idx[i][j] = idx
-                pp48_idx[j][i] = idx
-                pp48_sq_x[idx] = i
-                pp48_sq_y[idx] = j
+                pp48_idx[i][j] = pp48_idx[j][i] = idx
+                pp48_sq_x[idx], pp48_sq_y[idx] = i, j
                 idx += 1
 
     return pp48_idx, pp48_sq_x, pp48_sq_y
@@ -179,26 +166,15 @@ def init_ppp48_idx() -> Tuple[List[List[List[int]]], List[int], List[int], List[
     for x in range(48):
         for y in range(x + 1, 48):
             for z in range(y + 1, 48):
-                a = ITOSQ[x]
-                b = ITOSQ[y]
-                c = ITOSQ[z]
-                if not in_queenside(b) or not in_queenside(c):
+                if not (in_queenside(ITOSQ[y]) and in_queenside(ITOSQ[z])):
                     continue
 
-                i = a - 8
-                j = b - 8
-                k = c - 8
+                i, j, k = ITOSQ[x] - 8, ITOSQ[y] - 8, ITOSQ[z] - 8
 
                 if idx_is_empty(ppp48_idx[i][j][k]):
-                    ppp48_idx[i][j][k] = idx
-                    ppp48_idx[i][k][j] = idx
-                    ppp48_idx[j][i][k] = idx
-                    ppp48_idx[j][k][i] = idx
-                    ppp48_idx[k][i][j] = idx
-                    ppp48_idx[k][j][i] = idx
-                    ppp48_sq_x[idx] = i
-                    ppp48_sq_y[idx] = j
-                    ppp48_sq_z[idx] = k
+                    for p in [(i, j, k), (i, k, j), (j, i, k), (j, k, i), (k, i, j), (k, j, i)]:
+                        ppp48_idx[p[0]][p[1]][p[2]] = idx
+                    ppp48_sq_x[idx], ppp48_sq_y[idx], ppp48_sq_z[idx] = i, j, k
                     idx += 1
 
     return ppp48_idx, ppp48_sq_x, ppp48_sq_y, ppp48_sq_z
@@ -216,8 +192,7 @@ def init_aaidx() -> Tuple[List[int], List[List[int]]]:
 
             if idx_is_empty(aaidx[x][y]):
                 # Still empty.
-                aaidx[x][y] = idx
-                aaidx[y][x] = idx
+                aaidx[x][y] = aaidx[y][x] = idx
                 aabase[idx] = x
                 idx += 1
 
@@ -229,24 +204,10 @@ def init_aaidx() -> Tuple[List[int], List[List[int]]]:
 def init_aaa() -> Tuple[List[int], List[List[int]]]:
     # Get aaa_base.
     comb = [a * (a - 1) // 2 for a in range(64)]
-
-    accum = 0
-    aaa_base = [0] * 64
-    for a in range(64 - 1):
-        accum += comb[a]
-        aaa_base[a + 1] = accum
+    aaa_base = list(accumulate(comb))
 
     # Get aaa_xyz.
-    aaa_xyz = [[-1] * 3 for _ in range(MAX_AAAINDEX)]
-
-    idx = 0
-    for z in range(64):
-        for y in range(z):
-            for x in range(y):
-                aaa_xyz[idx][0] = x
-                aaa_xyz[idx][1] = y
-                aaa_xyz[idx][2] = z
-                idx += 1
+    aaa_xyz = [[x, y, z] for z in range(64) for y in range(z) for x in range(y)]
 
     return aaa_base, aaa_xyz
 
@@ -351,34 +312,33 @@ def init_ppidx() -> Tuple[List[List[int]], List[int], List[int]]:
 
 
 def norm_kkindex(x: chess.Square, y: chess.Square) -> Tuple[int, int]:
-    if chess.square_file(x) > 3:
-        x = flip_we(x)
-        y = flip_we(y)
+    file_x, rank_x = chess.square_file(x), chess.square_rank(x)
+
+    if file_x > 3:
+        x, y = flip_we(x), flip_we(y)
 
-    if chess.square_rank(x) > 3:
-        x = flip_ns(x)
-        y = flip_ns(y)
+    if rank_x > 3:
+        x, y = flip_ns(x), flip_ns(y)
 
     rowx = chess.square_rank(x)
     colx = chess.square_file(x)
 
     if rowx > colx:
-        x = flip_nw_se(x)
-        y = flip_nw_se(y)
+        x, y = flip_nw_se(x), flip_nw_se(y)
 
     rowy = chess.square_rank(y)
     coly = chess.square_file(y)
 
     if rowx == colx and rowy > coly:
-        x = flip_nw_se(x)
-        y = flip_nw_se(y)
+        x, y = flip_nw_se(x), flip_nw_se(y)
 
     return x, y
 
+
 def init_kkidx() -> Tuple[List[List[int]], List[int], List[int]]:
     kkidx = [[-1] * 64 for _ in range(64)]
-    bksq = [-1] * MAX_KKINDEX
-    wksq = [-1] * MAX_KKINDEX
+    bksq, wksq = [-1] * MAX_KKINDEX, [-1] * MAX_KKINDEX
+
     idx = 0
     for x in range(64):
         for y in range(64):
@@ -388,10 +348,8 @@ def init_kkidx() -> Tuple[List[List[int]], List[int], List[int]]:
                 i, j = norm_kkindex(x, y)
 
                 if idx_is_empty(kkidx[i][j]):
-                    kkidx[i][j] = idx
-                    kkidx[x][y] = idx
-                    bksq[idx] = i
-                    wksq[idx] = j
+                    kkidx[i][j] = kkidx[x][y] = idx
+                    bksq[idx], wksq[idx] = i, j
                     idx += 1
 
     return kkidx, wksq, bksq
@@ -404,20 +362,12 @@ def kxk_pctoindex(c: Request) -> int:
 
     ft = flip_type(c.black_piece_squares[0], c.white_piece_squares[0])
 
-    ws = c.white_piece_squares
-    bs = c.black_piece_squares
-
-    if (ft & 1) != 0:
-        ws = [flip_we(b) for b in ws]
-        bs = [flip_we(b) for b in bs]
-
-    if (ft & 2) != 0:
-        ws = [flip_ns(b) for b in ws]
-        bs = [flip_ns(b) for b in bs]
+    ws, bs = c.white_piece_squares, c.black_piece_squares
 
-    if (ft & 4) != 0:
-        ws = [flip_nw_se(b) for b in ws]
-        bs = [flip_nw_se(b) for b in bs]
+    for f, flip in [(1, flip_we), (2, flip_ns), (4, flip_nw_se)]:
+        if ft & f:
+            ws = [flip(b) for b in ws]
+            bs = [flip(b) for b in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
 
@@ -426,6 +376,14 @@ def kxk_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ws[1]
 
+
+def flip_we_col(*pieces: int) -> tuple[int, ...]:
+    if (pieces[0] & 7) > 3:
+        # Column is more than 3, i.e., e, f, g or h.
+        pieces = tuple(flip_we(piece) for piece in pieces)
+    return pieces
+
+
 def kapkb_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64 * 64
     BLOCK_B = 64 * 64 * 64
@@ -438,24 +396,17 @@ def kapkb_pctoindex(c: Request) -> int:
     bk = c.black_piece_squares[0]
     ba = c.black_piece_squares[1]
 
-    if not (chess.A2 <= pawn < chess.A8):
+    if not chess.A2 <= pawn < chess.A8:
         return NOINDEX
 
-    if (pawn & 7) > 3:
-        # Column is more than 3, i.e., e, f, g or h.
-        pawn = flip_we(pawn)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        wa = flip_we(wa)
-        ba = flip_we(ba)
+    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
 
-    sq = pawn
-    sq ^= 56  # flip_ns
-    sq -= 8   # Down one row
-    pslice = (sq + (sq & 3)) >> 1
+    # flip_ns, down one row
+    pslice = ((pawn ^ 56) - 8 + (pawn & 3)) >> 1
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa * BLOCK_D + ba
 
+
 def kabpk_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64 * 64
     BLOCK_B = 64 * 64 * 64
@@ -468,18 +419,13 @@ def kabpk_pctoindex(c: Request) -> int:
     pawn = c.white_piece_squares[3]
     bk = c.black_piece_squares[0]
 
-    if (pawn & 7) > 3:
-        # Column is more than 3, i.e., e, f, g or h.
-        pawn = flip_we(pawn)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        wa = flip_we(wa)
-        wb = flip_we(wb)
+    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
 
     pslice = wsq_to_pidx24(pawn)
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa * BLOCK_D + wb
 
+
 def kabkp_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64 * 64
     BLOCK_B = 64 * 64 * 64
@@ -492,23 +438,17 @@ def kabkp_pctoindex(c: Request) -> int:
     bk = c.black_piece_squares[0]
     wb = c.white_piece_squares[2]
 
-    if not (chess.A2 <= pawn < chess.A8):
+    if not chess.A2 <= pawn < chess.A8:
         return NOINDEX
 
-    if (pawn & 7) > 3:
-        # Column is more than 3, i.e., e, f, g or h.
-        pawn = flip_we(pawn)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        wa = flip_we(wa)
-        wb = flip_we(wb)
+    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
 
-    sq = pawn
-    sq -= 8  # Down one row
-    pslice = (sq + (sq & 3)) >> 1
+    # Down one row
+    pslice = ((pawn - 8) + (pawn & 3)) >> 1
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa * BLOCK_D + wb
 
+
 def kaapk_pctoindex(c: Request) -> int:
     BLOCK_C = MAX_AAINDEX
     BLOCK_B = 64 * BLOCK_C
@@ -520,13 +460,7 @@ def kaapk_pctoindex(c: Request) -> int:
     pawn = c.white_piece_squares[3]
     bk = c.black_piece_squares[0]
 
-    if (pawn & 7) > 3:
-        # Column is more than 3, i.e., e, f, g or h.
-        pawn = flip_we(pawn)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        wa = flip_we(wa)
-        wa2 = flip_we(wa2)
+    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
 
     pslice = wsq_to_pidx24(pawn)
 
@@ -537,6 +471,7 @@ def kaapk_pctoindex(c: Request) -> int:
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + aa_combo
 
+
 def kaakp_pctoindex(c: Request) -> int:
     BLOCK_C = MAX_AAINDEX
     BLOCK_B = 64 * BLOCK_C
@@ -548,13 +483,7 @@ def kaakp_pctoindex(c: Request) -> int:
     bk = c.black_piece_squares[0]
     pawn = c.black_piece_squares[1]
 
-    if (pawn & 7) > 3:
-        # Column is more than 3, i.e., e, f, g or h.
-        pawn = flip_we(pawn)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        wa = flip_we(wa)
-        wa2 = flip_we(wa2)
+    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
 
     pawn = flip_ns(pawn)
     pslice = wsq_to_pidx24(pawn)
@@ -566,6 +495,7 @@ def kaakp_pctoindex(c: Request) -> int:
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + aa_combo
 
+
 def kapkp_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64
     BLOCK_B = 64 * 64
@@ -573,30 +503,20 @@ def kapkp_pctoindex(c: Request) -> int:
 
     wk = c.white_piece_squares[0]
     wa = c.white_piece_squares[1]
-    pawn_a = c.white_piece_squares[2]
+    anchor = c.white_piece_squares[2]
     bk = c.black_piece_squares[0]
-    pawn_b = c.black_piece_squares[1]
-
-    anchor = pawn_a
-    loosen = pawn_b
+    loosen = c.black_piece_squares[1]
 
-    if (anchor & 7) > 3:
-        # Column is more than 3, i.e., e, f, g or h.
-        anchor = flip_we(anchor)
-        loosen = flip_we(loosen)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        wa = flip_we(wa)
+    anchor, loosen, wk, bk, wa = flip_we_col(anchor, loosen, wk, bk, wa)
 
-    m = wsq_to_pidx24(anchor)
-    n = loosen - 8
-    pp_slice = m * 48 + n
+    pp_slice = wsq_to_pidx24(anchor) * 48 + loosen - 8
 
     if idx_is_empty(pp_slice):
         return NOINDEX
 
     return pp_slice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa
 
+
 def kappk_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64
     BLOCK_B = 64 * 64
@@ -610,13 +530,7 @@ def kappk_pctoindex(c: Request) -> int:
 
     anchor, loosen = pp_putanchorfirst(pawn_a, pawn_b)
 
-    if (anchor & 7) > 3:
-        # Column is more than 3, i.e., e, f, g or h.
-        anchor = flip_we(anchor)
-        loosen = flip_we(loosen)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        wa = flip_we(wa)
+    anchor, loosen, wk, bk, wa = flip_we_col(anchor, loosen, wk, bk, wa)
 
     i = wsq_to_pidx24(anchor)
     j = wsq_to_pidx48(loosen)
@@ -628,6 +542,7 @@ def kappk_pctoindex(c: Request) -> int:
 
     return pp_slice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa
 
+
 def kppka_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64
     BLOCK_B = 64 * 64
@@ -641,12 +556,7 @@ def kppka_pctoindex(c: Request) -> int:
 
     anchor, loosen = pp_putanchorfirst(pawn_a, pawn_b)
 
-    if (anchor & 7) > 3:
-        anchor = flip_we(anchor)
-        loosen = flip_we(loosen)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        ba = flip_we(ba)
+    anchor, loosen, wk, bk, wa = flip_we_col(anchor, loosen, wk, bk, wa)
 
     i = wsq_to_pidx24(anchor)
     j = wsq_to_pidx48(loosen)
@@ -658,6 +568,7 @@ def kppka_pctoindex(c: Request) -> int:
 
     return pp_slice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + ba
 
+
 def kabck_pctoindex(c: Request) -> int:
     N_WHITE = 4
     N_BLACK = 1
@@ -689,6 +600,7 @@ def kabck_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_A + ws[1] * BLOCK_B + ws[2] * BLOCK_C + ws[3]
 
+
 def kabbk_pctoindex(c: Request) -> int:
     N_WHITE = 4
     N_BLACK = 1
@@ -720,6 +632,7 @@ def kabbk_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai * BLOCK_Bx + ws[1]
 
+
 def kaabk_pctoindex(c: Request) -> int:
     N_WHITE = 4
     N_BLACK = 1
@@ -751,45 +664,23 @@ def kaabk_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai * BLOCK_Bx + ws[3]
 
+
 def aaa_getsubi(x: int, y: int, z: int) -> int:
-    bse = AAA_BASE[z]
-    calc_idx = x + (y - 1) * y // 2 + bse
-    return calc_idx
+    return x + (y - 1) * y // 2 + AAA_BASE[z]
+
 
 def kaaak_pctoindex(c: Request) -> int:
-    N_WHITE = 4
-    N_BLACK = 1
     BLOCK_Ax = MAX_AAAINDEX
-
-    ws = c.white_piece_squares[:N_WHITE]
-    bs = c.black_piece_squares[:N_BLACK]
-
+    ws = c.white_piece_squares[:4]
+    bs = c.black_piece_squares[:1]
     ft = FLIPT[c.black_piece_squares[0]][c.white_piece_squares[0]]
 
-    if (ft & WE_FLAG) != 0:
-        ws = [flip_we(i) for i in ws]
-        bs = [flip_we(i) for i in bs]
-
-    if (ft & NS_FLAG) != 0:
-        ws = [flip_ns(i) for i in ws]
-        bs = [flip_ns(i) for i in bs]
+    for flag, flip in [(WE_FLAG, flip_we), (NS_FLAG, flip_ns), (NW_SE_FLAG, flip_nw_se)]:
+        if ft & flag:
+            ws = [flip(i) for i in ws]
+            bs = [flip(i) for i in bs]
 
-    if (ft & NW_SE_FLAG) != 0:
-        ws = [flip_nw_se(i) for i in ws]
-        bs = [flip_nw_se(i) for i in bs]
-
-    if ws[2] < ws[1]:
-        tmp = ws[1]
-        ws[1] = ws[2]
-        ws[2] = tmp
-    if ws[3] < ws[2]:
-        tmp = ws[2]
-        ws[2] = ws[3]
-        ws[3] = tmp
-    if ws[2] < ws[1]:
-        tmp = ws[1]
-        ws[1] = ws[2]
-        ws[2] = tmp
+    ws[1:4] = sorted(ws[1:4])
 
     ki = KKIDX[bs[0]][ws[0]]
 
@@ -803,6 +694,7 @@ def kaaak_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai
 
+
 def kppkp_pctoindex(c: Request) -> int:
     BLOCK_Ax = MAX_PP48_INDEX * 64 * 64
     BLOCK_Bx = 64 * 64
@@ -814,12 +706,7 @@ def kppkp_pctoindex(c: Request) -> int:
     bk = c.black_piece_squares[0]
     pawn_c = c.black_piece_squares[1]
 
-    if (pawn_c & 7) > 3:
-        wk = flip_we(wk)
-        pawn_a = flip_we(pawn_a)
-        pawn_b = flip_we(pawn_b)
-        bk = flip_we(bk)
-        pawn_c = flip_we(pawn_c)
+    pawn_c, wk, pawn_a, pawn_b, bk = flip_we_col(pawn_c, wk, pawn_a, pawn_b, bk)
 
     i = flip_we(flip_ns(pawn_a)) - 8
     j = flip_we(flip_ns(pawn_b)) - 8
@@ -834,28 +721,19 @@ def kppkp_pctoindex(c: Request) -> int:
 
     return k * BLOCK_Ax + pp48_slice * BLOCK_Bx + wk * BLOCK_Cx + bk
 
+
 def kaakb_pctoindex(c: Request) -> int:
-    N_WHITE = 3
-    N_BLACK = 2
     BLOCK_Bx = 64
     BLOCK_Ax = BLOCK_Bx * MAX_AAINDEX
+    ws = c.white_piece_squares[:3]
+    bs = c.black_piece_squares[:2]
 
     ft = FLIPT[c.black_piece_squares[0]][c.white_piece_squares[0]]
 
-    ws = c.white_piece_squares[:N_WHITE]
-    bs = c.black_piece_squares[:N_BLACK]
-
-    if (ft & WE_FLAG) != 0:
-        ws = [flip_we(i) for i in ws]
-        bs = [flip_we(i) for i in bs]
-
-    if (ft & NS_FLAG) != 0:
-        ws = [flip_ns(i) for i in ws]
-        bs = [flip_ns(i) for i in bs]
-
-    if (ft & NW_SE_FLAG) != 0:
-        ws = [flip_nw_se(i) for i in ws]
-        bs = [flip_nw_se(i) for i in bs]
+    for flag, flip in [(WE_FLAG, flip_we), (NS_FLAG, flip_ns), (NW_SE_FLAG, flip_nw_se)]:
+        if ft & flag:
+            ws = [flip(i) for i in ws]
+            bs = [flip(i) for i in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
     ai = AAIDX[ws[1]][ws[2]]
@@ -865,6 +743,7 @@ def kaakb_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai * BLOCK_Bx + bs[1]
 
+
 def kabkc_pctoindex(c: Request) -> int:
     N_WHITE = 3
     N_BLACK = 2
@@ -878,17 +757,10 @@ def kabkc_pctoindex(c: Request) -> int:
     ws = c.white_piece_squares[:N_WHITE]
     bs = c.black_piece_squares[:N_BLACK]
 
-    if (ft & WE_FLAG) != 0:
-        ws = [flip_we(i) for i in ws]
-        bs = [flip_we(i) for i in bs]
-
-    if (ft & NS_FLAG) != 0:
-        ws = [flip_ns(i) for i in ws]
-        bs = [flip_ns(i) for i in bs]
-
-    if (ft & NW_SE_FLAG) != 0:
-        ws = [flip_nw_se(i) for i in ws]
-        bs = [flip_nw_se(i) for i in bs]
+    for flag, flip in [(WE_FLAG, flip_we), (NS_FLAG, flip_ns), (NW_SE_FLAG, flip_nw_se)]:
+        if ft & flag:
+            ws = [flip(i) for i in ws]
+            bs = [flip(i) for i in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX [black king] [white king]
 
@@ -897,23 +769,17 @@ def kabkc_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ws[1] * BLOCK_Bx + ws[2] * BLOCK_Cx + bs[1]
 
+
 def kpkp_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64
     BLOCK_Bx = 64
 
     wk = c.white_piece_squares[0]
     bk = c.black_piece_squares[0]
-    pawn_a = c.white_piece_squares[1]
-    pawn_b = c.black_piece_squares[1]
+    anchor = c.white_piece_squares[1]
+    loosen = c.black_piece_squares[1]
 
-    anchor = pawn_a
-    loosen = pawn_b
-
-    if (anchor & 7) > 3:
-        anchor = flip_we(anchor)
-        loosen = flip_we(loosen)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
+    anchor, loosen, wk, bk = flip_we_col(anchor, loosen, wk, bk)
 
     m = wsq_to_pidx24(anchor)
     n = loosen - 8
@@ -925,6 +791,7 @@ def kpkp_pctoindex(c: Request) -> int:
 
     return pp_slice * BLOCK_Ax + wk * BLOCK_Bx + bk
 
+
 def kppk_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64
     BLOCK_Bx = 64
@@ -935,11 +802,7 @@ def kppk_pctoindex(c: Request) -> int:
 
     anchor, loosen = pp_putanchorfirst(pawn_a, pawn_b)
 
-    if (anchor & 7) > 3:
-        anchor = flip_we(anchor)
-        loosen = flip_we(loosen)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
+    anchor, loosen, wk, bk = flip_we_col(anchor, loosen, wk, bk)
 
     i = wsq_to_pidx24(anchor)
     j = wsq_to_pidx48(loosen)
@@ -951,6 +814,7 @@ def kppk_pctoindex(c: Request) -> int:
 
     return pp_slice * BLOCK_Ax + wk * BLOCK_Bx + bk
 
+
 def kapk_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64 * 64
     BLOCK_Bx = 64 * 64
@@ -961,22 +825,17 @@ def kapk_pctoindex(c: Request) -> int:
     wk = c.white_piece_squares[0]
     bk = c.black_piece_squares[0]
 
-    if not (chess.A2 <= pawn < chess.A8):
+    if not chess.A2 <= pawn < chess.A8:
         return NOINDEX
 
-    if (pawn & 7) > 3:
-        pawn = flip_we(pawn)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        wa = flip_we(wa)
+    pawn, wk, bk, wa = flip_we_col(pawn, wk, bk, wa)
 
-    sq = pawn
-    sq ^= 56  # flip_ns
-    sq -= 8   # Down one row
+    sq = pawn ^ 56 - 8 # flip_ns and down one row
     pslice = ((sq + (sq & 3)) >> 1)
 
     return pslice * BLOCK_Ax + wk * BLOCK_Bx + bk * BLOCK_Cx + wa
 
+
 def kabk_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64
     BLOCK_Bx = 64
@@ -986,17 +845,10 @@ def kabk_pctoindex(c: Request) -> int:
     ws = c.white_piece_squares
     bs = c.black_piece_squares
 
-    if (ft & 1) != 0:
-        ws = [flip_we(b) for b in ws]
-        bs = [flip_we(b) for b in bs]
-
-    if (ft & 2) != 0:
-        ws = [flip_ns(b) for b in ws]
-        bs = [flip_ns(b) for b in bs]
-
-    if (ft & 4) != 0:
-        ws = [flip_nw_se(b) for b in ws]
-        bs = [flip_nw_se(b) for b in bs]
+    for flag, flip in [(1, flip_we), (2, flip_ns), (4, flip_nw_se)]:
+        if ft & flag:
+            ws = [flip(b) for b in ws]
+            bs = [flip(b) for b in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
 
@@ -1005,6 +857,7 @@ def kabk_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ws[1] * BLOCK_Bx + ws[2]
 
+
 def kakp_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64 * 64
     BLOCK_Bx = 64 * 64
@@ -1015,42 +868,29 @@ def kakp_pctoindex(c: Request) -> int:
     wk = c.white_piece_squares[0]
     bk = c.black_piece_squares[0]
 
-    if not (chess.A2 <= pawn < chess.A8):
+    if not chess.A2 <= pawn < chess.A8:
         return NOINDEX
 
-    if (pawn & 7) > 3:
-        pawn = flip_we(pawn)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
-        wa = flip_we(wa)
+    pawn, wk, bk, wa = flip_we_col(pawn, wk, bk, wa)
 
-    sq = pawn
-    sq -= 8  # Down one row
-    pslice = (sq + (sq & 3)) >> 1
+    # Down one row
+    pslice = ((pawn - 8) + ((pawn - 8) & 3)) >> 1
 
     return pslice * BLOCK_Ax + wk * BLOCK_Bx + bk * BLOCK_Cx + wa
 
+
 def kaak_pctoindex(c: Request) -> int:
-    N_WHITE = 3
-    N_BLACK = 1
     BLOCK_Ax = MAX_AAINDEX
 
     ft = FLIPT[c.black_piece_squares[0]][c.white_piece_squares[0]]
 
-    ws = c.white_piece_squares[:N_WHITE]
-    bs = c.black_piece_squares[:N_BLACK]
-
-    if (ft & WE_FLAG) != 0:
-        ws = [flip_we(i) for i in ws]
-        bs = [flip_we(i) for i in bs]
+    ws = c.white_piece_squares[:3]
+    bs = c.black_piece_squares[:1]
 
-    if (ft & NS_FLAG) != 0:
-        ws = [flip_ns(i) for i in ws]
-        bs = [flip_ns(i) for i in bs]
-
-    if (ft & NW_SE_FLAG) != 0:
-        ws = [flip_nw_se(i) for i in ws]
-        bs = [flip_nw_se(i) for i in bs]
+    for flag, flip in [(WE_FLAG, flip_we), (NS_FLAG, flip_ns), (NW_SE_FLAG, flip_nw_se)]:
+        if ft & flag:
+            ws = [flip(i) for i in ws]
+            bs = [flip(i) for i in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
     ai = AAIDX[ws[1]][ws[2]]
@@ -1060,6 +900,7 @@ def kaak_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai
 
+
 def kakb_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64
     BLOCK_Bx = 64
@@ -1069,23 +910,9 @@ def kakb_pctoindex(c: Request) -> int:
     ws = c.white_piece_squares[:]
     bs = c.black_piece_squares[:]
 
-    if (ft & 1) != 0:
-        ws[0] = flip_we(ws[0])
-        ws[1] = flip_we(ws[1])
-        bs[0] = flip_we(bs[0])
-        bs[1] = flip_we(bs[1])
-
-    if (ft & 2) != 0:
-        ws[0] = flip_ns(ws[0])
-        ws[1] = flip_ns(ws[1])
-        bs[0] = flip_ns(bs[0])
-        bs[1] = flip_ns(bs[1])
-
-    if (ft & 4) != 0:
-        ws[0] = flip_nw_se(ws[0])
-        ws[1] = flip_nw_se(ws[1])
-        bs[0] = flip_nw_se(bs[0])
-        bs[1] = flip_nw_se(bs[1])
+    for bit, flip in [(1, flip_we), (2, flip_ns), (4, flip_nw_se)]:
+        if ft & bit:
+            ws[0], ws[1], bs[0], bs[1] = flip(ws[0]), flip(ws[1]), flip(bs[0]), flip(bs[1])
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
 
@@ -1094,6 +921,7 @@ def kakb_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ws[1] * BLOCK_Bx + bs[1]
 
+
 def kpk_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64
     BLOCK_B = 64
@@ -1102,21 +930,16 @@ def kpk_pctoindex(c: Request) -> int:
     wk = c.white_piece_squares[0]
     bk = c.black_piece_squares[0]
 
-    if not (chess.A2 <= pawn < chess.A8):
+    if not chess.A2 <= pawn < chess.A8:
         return NOINDEX
 
-    if (pawn & 7) > 3:
-        pawn = flip_we(pawn)
-        wk = flip_we(wk)
-        bk = flip_we(bk)
+    pawn, wk, bk = flip_we_col(pawn, wk, bk)
 
-    sq = pawn
-    sq ^= 56  # flip_ns
-    sq -= 8   # Down one row
+    sq = (pawn ^ 56) - 8  # flip_ns, down one row
     pslice = ((sq + (sq & 3)) >> 1)
 
-    res = pslice * BLOCK_A + wk * BLOCK_B + bk
-    return res
+    return pslice * BLOCK_A + wk * BLOCK_B + bk
+
 
 def kpppk_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64
@@ -1126,26 +949,16 @@ def kpppk_pctoindex(c: Request) -> int:
     pawn_a = c.white_piece_squares[1]
     pawn_b = c.white_piece_squares[2]
     pawn_c = c.white_piece_squares[3]
-
     bk = c.black_piece_squares[0]
 
-    i = pawn_a - 8
-    j = pawn_b - 8
-    k = pawn_c - 8
-
+    i, j, k = [x - 8 for x in (pawn_a, pawn_b, pawn_c)]
     ppp48_slice = PPP48_IDX[i][j][k]
 
     if idx_is_empty(ppp48_slice):
-        wk = flip_we(wk)
-        pawn_a = flip_we(pawn_a)
-        pawn_b = flip_we(pawn_b)
-        pawn_c = flip_we(pawn_c)
-        bk = flip_we(bk)
-
-    i = pawn_a - 8
-    j = pawn_b - 8
-    k = pawn_c - 8
+        wk, pawn_a, pawn_b, pawn_c, bk = [flip_we(x) for x in (wk, pawn_a, pawn_b, pawn_c, bk)]
 
+    # removing this doesn't impact the tests?
+    i, j, k = [x - 8 for x in (pawn_a, pawn_b, pawn_c)]
     ppp48_slice = PPP48_IDX[i][j][k]
 
     if idx_is_empty(ppp48_slice):
@@ -1330,13 +1143,15 @@ def __init__(self, maxindex: int, slice_n: int, pctoi: Callable[[Request], int])
 
 
 def sortlists(ws: List[int], wp: List[int]) -> Tuple[List[int], List[int]]:
-    z = sorted(zip(wp, ws), key=lambda x: x[0], reverse=True)
+    z = sorted(zip(wp, ws), reverse=True)
     wp2, ws2 = zip(*z)
     return list(ws2), list(wp2)
 
+
 def egtb_block_unpack(side: int, n: int, bp: bytes) -> List[int]:
     return [dtm_unpack(side, i) for i in bp[:n]]
 
+
 def split_index(i: int) -> Tuple[int, int]:
     return divmod(i, ENTRIES_PER_BLOCK)
 
@@ -1360,19 +1175,23 @@ def removepiece(ys: List[int], yp: List[int], j: int) -> None:
     del ys[j]
     del yp[j]
 
+
 def opp(side: int) -> int:
     return 1 if side == 0 else 0
 
-def adjust_up(dist: int) -> int:
-    udist = dist
-    sw = udist & INFOMASK
 
-    if sw in [iWMATE, iWMATEt, iBMATE, iBMATEt]:
-        udist += (1 << PLYSHIFT)
+def adjust_up(dist: int) -> int:
+    if (dist & INFOMASK) in [iWMATE, iWMATEt, iBMATE, iBMATEt]:
+        return dist + (1 << PLYSHIFT)
+    return dist
 
-    return udist
 
 def bestx(side: int, a: int, b: int) -> int:
+    if a == iFORBID:
+        return b
+    if b == iFORBID:
+        return a
+
     # 0 = selectfirst
     # 1 = selectlowest
     # 2 = selecthighest
@@ -1385,33 +1204,25 @@ def bestx(side: int, a: int, b: int) -> int:
         [3, 3, 3, 0],  # forbid
     ]
 
-    xorkey = [0, 3]
-
-    if a == iFORBID:
-        return b
-    if b == iFORBID:
-        return a
-
     retu = [a, a, b, b]
 
     if b < a:
-        retu[1] = b
-        retu[2] = a
+        retu[1:2] = [b, a]
 
-    key = comparison[a & 3][b & 3] ^ xorkey[side]
+    key = comparison[a & 3][b & 3] ^ [0, 3][side]  # ^ xorkey
     return retu[key]
 
+
 def unpackdist(d: int) -> Tuple[int, int]:
     return d >> PLYSHIFT, d & INFOMASK
 
-def dtm_unpack(stm: int, packed: int) -> int:
-    p = packed
 
-    if p in [iDRAW, iFORBID]:
-        return p
+def dtm_unpack(stm: int, packed: int) -> int:
+    if packed in [iDRAW, iFORBID]:
+        return packed
 
-    info = p & 3
-    store = p >> 2
+    info = packed & 3
+    store = packed >> 2
 
     if stm == 0:
         if info == iWMATE:
@@ -1587,28 +1398,23 @@ def probe_dtm(self, board: chess.Board) -> int:
             if req.realside == 1:
                 if req.is_reversed:
                     return ply
-                else:
-                    return -ply
-            else:
-                if req.is_reversed:
-                    return -ply
-                else:
-                    return ply
-        elif res == iBMATE:
+                return -ply
+            if req.is_reversed:
+                return -ply
+            return ply
+
+        if res == iBMATE:
             # Black mates in the stored position.
             if req.realside == 0:
                 if req.is_reversed:
                     return ply
-                else:
-                    return -ply
-            else:
-                if req.is_reversed:
-                    return -ply
-                else:
-                    return ply
-        else:
-            # Draw.
-            return 0
+                return -ply
+            if req.is_reversed:
+                return -ply
+            return ply
+
+        # Draw.
+        return 0
 
     def get_dtm(self, board: chess.Board, default: Optional[int] = None) -> Optional[int]:
         try:
@@ -1644,12 +1450,12 @@ def probe_wdl(self, board: chess.Board) -> int:
         if dtm == 0:
             if board.is_checkmate():
                 return -1
-            else:
-                return 0
-        elif dtm > 0:
+            return 0
+
+        if dtm > 0:
             return 1
-        else:
-            return -1
+
+        return -1
 
     def get_wdl(self, board: chess.Board, default: Optional[int] = None) -> Optional[int]:
         try:
@@ -1795,8 +1601,7 @@ def egtb_block_getsize(self, req: Request, idx: int) -> int:
 
         if (offset + blocksz) > maxindex:
             return maxindex - offset  # Last block size
-        else:
-            return blocksz  # Size of a normal block
+        return blocksz  # Size of a normal block
 
     def _tb_probe(self, req: Request) -> int:
         stream = self._setup_tablebase(req)

From 4849537943da0cf3aa839770af2fa9f4c1432424 Mon Sep 17 00:00:00 2001
From: Adrien Barbaresi <barbaresi@bbaw.de>
Date: Sun, 5 Jan 2025 17:49:53 +0100
Subject: [PATCH 228/250] fix mypy errors

---
 chess/gaviota.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index 8cfd40d1e..9abe11bcb 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -419,7 +419,7 @@ def kabpk_pctoindex(c: Request) -> int:
     pawn = c.white_piece_squares[3]
     bk = c.black_piece_squares[0]
 
-    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
+    pawn, wk, bk, wa, wb = flip_we_col(pawn, wk, bk, wa, wb)
 
     pslice = wsq_to_pidx24(pawn)
 
@@ -441,7 +441,7 @@ def kabkp_pctoindex(c: Request) -> int:
     if not chess.A2 <= pawn < chess.A8:
         return NOINDEX
 
-    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
+    pawn, wk, bk, wa, wb = flip_we_col(pawn, wk, bk, wa, wb)
 
     # Down one row
     pslice = ((pawn - 8) + (pawn & 3)) >> 1
@@ -460,7 +460,7 @@ def kaapk_pctoindex(c: Request) -> int:
     pawn = c.white_piece_squares[3]
     bk = c.black_piece_squares[0]
 
-    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
+    pawn, wk, bk, wa, wa2 = flip_we_col(pawn, wk, bk, wa, wa2)
 
     pslice = wsq_to_pidx24(pawn)
 
@@ -483,7 +483,7 @@ def kaakp_pctoindex(c: Request) -> int:
     bk = c.black_piece_squares[0]
     pawn = c.black_piece_squares[1]
 
-    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
+    pawn, wk, bk, wa, wa2 = flip_we_col(pawn, wk, bk, wa, wa2)
 
     pawn = flip_ns(pawn)
     pslice = wsq_to_pidx24(pawn)
@@ -556,7 +556,7 @@ def kppka_pctoindex(c: Request) -> int:
 
     anchor, loosen = pp_putanchorfirst(pawn_a, pawn_b)
 
-    anchor, loosen, wk, bk, wa = flip_we_col(anchor, loosen, wk, bk, wa)
+    anchor, loosen, wk, bk, ba = flip_we_col(anchor, loosen, wk, bk, ba)
 
     i = wsq_to_pidx24(anchor)
     j = wsq_to_pidx48(loosen)

From 08b6647d6fd5b6a512bbc9e1ab50222073f697bc Mon Sep 17 00:00:00 2001
From: Adrien Barbaresi <barbaresi@bbaw.de>
Date: Mon, 6 Jan 2025 13:59:45 +0100
Subject: [PATCH 229/250] add permutations

---
 chess/gaviota.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index 9abe11bcb..a3372f04e 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -11,7 +11,7 @@
 import struct
 import typing
 
-from itertools import accumulate
+from itertools import accumulate, permutations
 from types import TracebackType
 from typing import BinaryIO, Callable, Dict, List, Optional, Tuple, Type, Union
 
@@ -172,8 +172,8 @@ def init_ppp48_idx() -> Tuple[List[List[List[int]]], List[int], List[int], List[
                 i, j, k = ITOSQ[x] - 8, ITOSQ[y] - 8, ITOSQ[z] - 8
 
                 if idx_is_empty(ppp48_idx[i][j][k]):
-                    for p in [(i, j, k), (i, k, j), (j, i, k), (j, k, i), (k, i, j), (k, j, i)]:
-                        ppp48_idx[p[0]][p[1]][p[2]] = idx
+                    for ii, jj, kk in permutations((i, j, k)):
+                        ppp48_idx[ii][jj][kk] = idx
                     ppp48_sq_x[idx], ppp48_sq_y[idx], ppp48_sq_z[idx] = i, j, k
                     idx += 1
 

From bbf2a05e6b6e3a83651b4333584940bc652cdea2 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 8 Jan 2025 20:30:04 +0100
Subject: [PATCH 230/250] Update source of Gaviota tables

---
 data/gaviota/SOURCE.txt      | 290 +++++++++++++++++------------------
 data/gaviota/TEST-SOURCE.txt |  94 ++++++------
 2 files changed, 192 insertions(+), 192 deletions(-)

diff --git a/data/gaviota/SOURCE.txt b/data/gaviota/SOURCE.txt
index dda9c83c7..706756322 100644
--- a/data/gaviota/SOURCE.txt
+++ b/data/gaviota/SOURCE.txt
@@ -1,145 +1,145 @@
-https://syzygy-tables.info/gaviota/kbk.gtb.cp4
-https://syzygy-tables.info/gaviota/knk.gtb.cp4
-https://syzygy-tables.info/gaviota/kpk.gtb.cp4
-https://syzygy-tables.info/gaviota/kqk.gtb.cp4
-https://syzygy-tables.info/gaviota/krk.gtb.cp4
-https://syzygy-tables.info/gaviota/kbbk.gtb.cp4
-https://syzygy-tables.info/gaviota/kbkb.gtb.cp4
-https://syzygy-tables.info/gaviota/kbkn.gtb.cp4
-https://syzygy-tables.info/gaviota/kbkp.gtb.cp4
-https://syzygy-tables.info/gaviota/kbnk.gtb.cp4
-https://syzygy-tables.info/gaviota/kbpk.gtb.cp4
-https://syzygy-tables.info/gaviota/knkn.gtb.cp4
-https://syzygy-tables.info/gaviota/knkp.gtb.cp4
-https://syzygy-tables.info/gaviota/knnk.gtb.cp4
-https://syzygy-tables.info/gaviota/knpk.gtb.cp4
-https://syzygy-tables.info/gaviota/kpkp.gtb.cp4
-https://syzygy-tables.info/gaviota/kppk.gtb.cp4
-https://syzygy-tables.info/gaviota/kqbk.gtb.cp4
-https://syzygy-tables.info/gaviota/kqkb.gtb.cp4
-https://syzygy-tables.info/gaviota/kqkn.gtb.cp4
-https://syzygy-tables.info/gaviota/kqkp.gtb.cp4
-https://syzygy-tables.info/gaviota/kqkq.gtb.cp4
-https://syzygy-tables.info/gaviota/kqkr.gtb.cp4
-https://syzygy-tables.info/gaviota/kqnk.gtb.cp4
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-https://syzygy-tables.info/gaviota/krbk.gtb.cp4
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diff --git a/data/gaviota/TEST-SOURCE.txt b/data/gaviota/TEST-SOURCE.txt
index f7d29a546..36c83d39a 100644
--- a/data/gaviota/TEST-SOURCE.txt
+++ b/data/gaviota/TEST-SOURCE.txt
@@ -1,47 +1,47 @@
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From 3a974697b31e39ea8ad7e115350dc190464d7a76 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 11 Jan 2025 15:50:27 +0100
Subject: [PATCH 231/250] Use import from only for types

---
 chess/gaviota.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index a3372f04e..0bbe41b81 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -4,6 +4,7 @@
 import ctypes.util
 import dataclasses
 import fnmatch
+import itertools
 import logging
 import lzma
 import os
@@ -11,7 +12,6 @@
 import struct
 import typing
 
-from itertools import accumulate, permutations
 from types import TracebackType
 from typing import BinaryIO, Callable, Dict, List, Optional, Tuple, Type, Union
 
@@ -172,7 +172,7 @@ def init_ppp48_idx() -> Tuple[List[List[List[int]]], List[int], List[int], List[
                 i, j, k = ITOSQ[x] - 8, ITOSQ[y] - 8, ITOSQ[z] - 8
 
                 if idx_is_empty(ppp48_idx[i][j][k]):
-                    for ii, jj, kk in permutations((i, j, k)):
+                    for ii, jj, kk in itertools.permutations((i, j, k)):
                         ppp48_idx[ii][jj][kk] = idx
                     ppp48_sq_x[idx], ppp48_sq_y[idx], ppp48_sq_z[idx] = i, j, k
                     idx += 1
@@ -204,7 +204,7 @@ def init_aaidx() -> Tuple[List[int], List[List[int]]]:
 def init_aaa() -> Tuple[List[int], List[List[int]]]:
     # Get aaa_base.
     comb = [a * (a - 1) // 2 for a in range(64)]
-    aaa_base = list(accumulate(comb))
+    aaa_base = list(itertools.accumulate(comb))
 
     # Get aaa_xyz.
     aaa_xyz = [[x, y, z] for z in range(64) for y in range(z) for x in range(y)]

From 57536b1a0787cecf0a725ac50e9ce98e65340f11 Mon Sep 17 00:00:00 2001
From: "Robert Nurnberg @ elitebook" <robert.nurnberg@gmx.de>
Date: Mon, 20 Jan 2025 08:49:28 +0100
Subject: [PATCH 232/250] fix typo in comment

---
 chess/syzygy.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/syzygy.py b/chess/syzygy.py
index 5ead9922c..c61890550 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -1850,7 +1850,7 @@ def probe_dtz(self, board: chess.Board) -> int:
         +-----+------------------+--------------------------------------------+
 
         The return value can be off by one: a return value -n can mean a
-        losing zeroing move in in n + 1 plies and a return value +n can mean a
+        losing zeroing move in n + 1 plies and a return value +n can mean a
         winning zeroing move in n + 1 plies.
         This implies some primary tablebase lines may waste up to 1 ply.
         Rounding is never used for endgame phases where it would change the

From 636e95fbf292f322fc4ab31b8c4add51f7534362 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 23 Feb 2025 21:05:39 +0100
Subject: [PATCH 233/250] Revert simplifications of chess.gaviota from #1130

The resulting code is not equivalent, that is, when the full tablebase
is available ./test.py GaviotaTestCase fails with

    ERROR: test_dm_4 (__main__.GaviotaTestCase.test_dm_4)
    ----------------------------------------------------------------------
    Traceback (most recent call last):
      File "/home/niklas/Projekte/python-chess/./test.py", line 35, in _wrapper
        return f(self)
      File "/home/niklas/Projekte/python-chess/./test.py", line 4305, in test_dm_4
        dtm = self.tablebase.probe_dtm(board)
      File "/home/niklas/Projekte/python-chess/chess/gaviota.py", line 1393, in probe_dtm
        dtm = self.egtb_get_dtm(req)
      File "/home/niklas/Projekte/python-chess/chess/gaviota.py", line 1518, in egtb_get_dtm
        dtm = self._tb_probe(req)
      File "/home/niklas/Projekte/python-chess/chess/gaviota.py", line 1621, in _tb_probe
        buffer_zipped = stream.read(z)
    ValueError: read length must be non-negative or -1
---
 chess/gaviota.py | 553 ++++++++++++++++++++++++++++++++---------------
 1 file changed, 374 insertions(+), 179 deletions(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index 0bbe41b81..39173b593 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -4,7 +4,6 @@
 import ctypes.util
 import dataclasses
 import fnmatch
-import itertools
 import logging
 import lzma
 import os
@@ -12,11 +11,11 @@
 import struct
 import typing
 
+import chess
+
 from types import TracebackType
 from typing import BinaryIO, Callable, Dict, List, Optional, Tuple, Type, Union
 
-import chess
-
 
 LOGGER = logging.getLogger(__name__)
 
@@ -110,19 +109,30 @@ def idx_is_empty(x: int) -> int:
 
 def flip_type(x: chess.Square, y: chess.Square) -> int:
     ret = 0
-    file_x, rank_x = chess.square_file(x), chess.square_rank(x)
-    file_y, rank_y = chess.square_file(y), chess.square_rank(y)
 
-    if file_x > 3:
-        x, y = flip_we(x), flip_we(y)
+    if chess.square_file(x) > 3:
+        x = flip_we(x)
+        y = flip_we(y)
         ret |= 1
 
-    if rank_x > 3:
-        x, y = flip_ns(x), flip_ns(y)
+    if chess.square_rank(x) > 3:
+        x = flip_ns(x)
+        y = flip_ns(y)
         ret |= 2
 
-    if (rank_x, file_x) > (rank_y, file_y):
-        x, y = flip_nw_se(x), flip_nw_se(y)
+    rowx = chess.square_rank(x)
+    colx = chess.square_file(x)
+
+    if rowx > colx:
+        x = flip_nw_se(x)
+        y = flip_nw_se(y)
+        ret |= 4
+
+    rowy = chess.square_rank(y)
+    coly = chess.square_file(y)
+    if rowx == colx and rowy > coly:
+        x = flip_nw_se(x)
+        y = flip_nw_se(y)
         ret |= 4
 
     return ret
@@ -135,6 +145,7 @@ def init_flipt() -> List[List[int]]:
 
 def init_pp48_idx() -> Tuple[List[List[int]], List[int], List[int]]:
     MAX_I = MAX_J = 48
+    idx = 0
     pp48_idx = [[-1] * MAX_J for _ in range(MAX_I)]
     pp48_sq_x = [NOSQUARE] * MAX_PP48_INDEX
     pp48_sq_y = [NOSQUARE] * MAX_PP48_INDEX
@@ -146,8 +157,10 @@ def init_pp48_idx() -> Tuple[List[List[int]], List[int], List[int]]:
             j = flip_we(flip_ns(b)) - 8
 
             if idx_is_empty(pp48_idx[i][j]):
-                pp48_idx[i][j] = pp48_idx[j][i] = idx
-                pp48_sq_x[idx], pp48_sq_y[idx] = i, j
+                pp48_idx[i][j] = idx
+                pp48_idx[j][i] = idx
+                pp48_sq_x[idx] = i
+                pp48_sq_y[idx] = j
                 idx += 1
 
     return pp48_idx, pp48_sq_x, pp48_sq_y
@@ -166,15 +179,26 @@ def init_ppp48_idx() -> Tuple[List[List[List[int]]], List[int], List[int], List[
     for x in range(48):
         for y in range(x + 1, 48):
             for z in range(y + 1, 48):
-                if not (in_queenside(ITOSQ[y]) and in_queenside(ITOSQ[z])):
+                a = ITOSQ[x]
+                b = ITOSQ[y]
+                c = ITOSQ[z]
+                if not in_queenside(b) or not in_queenside(c):
                     continue
 
-                i, j, k = ITOSQ[x] - 8, ITOSQ[y] - 8, ITOSQ[z] - 8
+                i = a - 8
+                j = b - 8
+                k = c - 8
 
                 if idx_is_empty(ppp48_idx[i][j][k]):
-                    for ii, jj, kk in itertools.permutations((i, j, k)):
-                        ppp48_idx[ii][jj][kk] = idx
-                    ppp48_sq_x[idx], ppp48_sq_y[idx], ppp48_sq_z[idx] = i, j, k
+                    ppp48_idx[i][j][k] = idx
+                    ppp48_idx[i][k][j] = idx
+                    ppp48_idx[j][i][k] = idx
+                    ppp48_idx[j][k][i] = idx
+                    ppp48_idx[k][i][j] = idx
+                    ppp48_idx[k][j][i] = idx
+                    ppp48_sq_x[idx] = i
+                    ppp48_sq_y[idx] = j
+                    ppp48_sq_z[idx] = k
                     idx += 1
 
     return ppp48_idx, ppp48_sq_x, ppp48_sq_y, ppp48_sq_z
@@ -192,7 +216,8 @@ def init_aaidx() -> Tuple[List[int], List[List[int]]]:
 
             if idx_is_empty(aaidx[x][y]):
                 # Still empty.
-                aaidx[x][y] = aaidx[y][x] = idx
+                aaidx[x][y] = idx
+                aaidx[y][x] = idx
                 aabase[idx] = x
                 idx += 1
 
@@ -204,10 +229,24 @@ def init_aaidx() -> Tuple[List[int], List[List[int]]]:
 def init_aaa() -> Tuple[List[int], List[List[int]]]:
     # Get aaa_base.
     comb = [a * (a - 1) // 2 for a in range(64)]
-    aaa_base = list(itertools.accumulate(comb))
+
+    accum = 0
+    aaa_base = [0] * 64
+    for a in range(64 - 1):
+        accum += comb[a]
+        aaa_base[a + 1] = accum
 
     # Get aaa_xyz.
-    aaa_xyz = [[x, y, z] for z in range(64) for y in range(z) for x in range(y)]
+    aaa_xyz = [[-1] * 3 for _ in range(MAX_AAAINDEX)]
+
+    idx = 0
+    for z in range(64):
+        for y in range(z):
+            for x in range(y):
+                aaa_xyz[idx][0] = x
+                aaa_xyz[idx][1] = y
+                aaa_xyz[idx][2] = z
+                idx += 1
 
     return aaa_base, aaa_xyz
 
@@ -312,33 +351,34 @@ def init_ppidx() -> Tuple[List[List[int]], List[int], List[int]]:
 
 
 def norm_kkindex(x: chess.Square, y: chess.Square) -> Tuple[int, int]:
-    file_x, rank_x = chess.square_file(x), chess.square_rank(x)
-
-    if file_x > 3:
-        x, y = flip_we(x), flip_we(y)
+    if chess.square_file(x) > 3:
+        x = flip_we(x)
+        y = flip_we(y)
 
-    if rank_x > 3:
-        x, y = flip_ns(x), flip_ns(y)
+    if chess.square_rank(x) > 3:
+        x = flip_ns(x)
+        y = flip_ns(y)
 
     rowx = chess.square_rank(x)
     colx = chess.square_file(x)
 
     if rowx > colx:
-        x, y = flip_nw_se(x), flip_nw_se(y)
+        x = flip_nw_se(x)
+        y = flip_nw_se(y)
 
     rowy = chess.square_rank(y)
     coly = chess.square_file(y)
 
     if rowx == colx and rowy > coly:
-        x, y = flip_nw_se(x), flip_nw_se(y)
+        x = flip_nw_se(x)
+        y = flip_nw_se(y)
 
     return x, y
 
-
 def init_kkidx() -> Tuple[List[List[int]], List[int], List[int]]:
     kkidx = [[-1] * 64 for _ in range(64)]
-    bksq, wksq = [-1] * MAX_KKINDEX, [-1] * MAX_KKINDEX
-
+    bksq = [-1] * MAX_KKINDEX
+    wksq = [-1] * MAX_KKINDEX
     idx = 0
     for x in range(64):
         for y in range(64):
@@ -348,8 +388,10 @@ def init_kkidx() -> Tuple[List[List[int]], List[int], List[int]]:
                 i, j = norm_kkindex(x, y)
 
                 if idx_is_empty(kkidx[i][j]):
-                    kkidx[i][j] = kkidx[x][y] = idx
-                    bksq[idx], wksq[idx] = i, j
+                    kkidx[i][j] = idx
+                    kkidx[x][y] = idx
+                    bksq[idx] = i
+                    wksq[idx] = j
                     idx += 1
 
     return kkidx, wksq, bksq
@@ -362,12 +404,20 @@ def kxk_pctoindex(c: Request) -> int:
 
     ft = flip_type(c.black_piece_squares[0], c.white_piece_squares[0])
 
-    ws, bs = c.white_piece_squares, c.black_piece_squares
+    ws = c.white_piece_squares
+    bs = c.black_piece_squares
+
+    if (ft & 1) != 0:
+        ws = [flip_we(b) for b in ws]
+        bs = [flip_we(b) for b in bs]
+
+    if (ft & 2) != 0:
+        ws = [flip_ns(b) for b in ws]
+        bs = [flip_ns(b) for b in bs]
 
-    for f, flip in [(1, flip_we), (2, flip_ns), (4, flip_nw_se)]:
-        if ft & f:
-            ws = [flip(b) for b in ws]
-            bs = [flip(b) for b in bs]
+    if (ft & 4) != 0:
+        ws = [flip_nw_se(b) for b in ws]
+        bs = [flip_nw_se(b) for b in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
 
@@ -376,14 +426,6 @@ def kxk_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ws[1]
 
-
-def flip_we_col(*pieces: int) -> tuple[int, ...]:
-    if (pieces[0] & 7) > 3:
-        # Column is more than 3, i.e., e, f, g or h.
-        pieces = tuple(flip_we(piece) for piece in pieces)
-    return pieces
-
-
 def kapkb_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64 * 64
     BLOCK_B = 64 * 64 * 64
@@ -396,17 +438,24 @@ def kapkb_pctoindex(c: Request) -> int:
     bk = c.black_piece_squares[0]
     ba = c.black_piece_squares[1]
 
-    if not chess.A2 <= pawn < chess.A8:
+    if not (chess.A2 <= pawn < chess.A8):
         return NOINDEX
 
-    pawn, wk, bk, wa, ba = flip_we_col(pawn, wk, bk, wa, ba)
+    if (pawn & 7) > 3:
+        # Column is more than 3, i.e., e, f, g or h.
+        pawn = flip_we(pawn)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        wa = flip_we(wa)
+        ba = flip_we(ba)
 
-    # flip_ns, down one row
-    pslice = ((pawn ^ 56) - 8 + (pawn & 3)) >> 1
+    sq = pawn
+    sq ^= 56  # flip_ns
+    sq -= 8   # Down one row
+    pslice = (sq + (sq & 3)) >> 1
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa * BLOCK_D + ba
 
-
 def kabpk_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64 * 64
     BLOCK_B = 64 * 64 * 64
@@ -419,13 +468,18 @@ def kabpk_pctoindex(c: Request) -> int:
     pawn = c.white_piece_squares[3]
     bk = c.black_piece_squares[0]
 
-    pawn, wk, bk, wa, wb = flip_we_col(pawn, wk, bk, wa, wb)
+    if (pawn & 7) > 3:
+        # Column is more than 3, i.e., e, f, g or h.
+        pawn = flip_we(pawn)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        wa = flip_we(wa)
+        wb = flip_we(wb)
 
     pslice = wsq_to_pidx24(pawn)
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa * BLOCK_D + wb
 
-
 def kabkp_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64 * 64
     BLOCK_B = 64 * 64 * 64
@@ -438,17 +492,23 @@ def kabkp_pctoindex(c: Request) -> int:
     bk = c.black_piece_squares[0]
     wb = c.white_piece_squares[2]
 
-    if not chess.A2 <= pawn < chess.A8:
+    if not (chess.A2 <= pawn < chess.A8):
         return NOINDEX
 
-    pawn, wk, bk, wa, wb = flip_we_col(pawn, wk, bk, wa, wb)
+    if (pawn & 7) > 3:
+        # Column is more than 3, i.e., e, f, g or h.
+        pawn = flip_we(pawn)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        wa = flip_we(wa)
+        wb = flip_we(wb)
 
-    # Down one row
-    pslice = ((pawn - 8) + (pawn & 3)) >> 1
+    sq = pawn
+    sq -= 8  # Down one row
+    pslice = (sq + (sq & 3)) >> 1
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa * BLOCK_D + wb
 
-
 def kaapk_pctoindex(c: Request) -> int:
     BLOCK_C = MAX_AAINDEX
     BLOCK_B = 64 * BLOCK_C
@@ -460,7 +520,13 @@ def kaapk_pctoindex(c: Request) -> int:
     pawn = c.white_piece_squares[3]
     bk = c.black_piece_squares[0]
 
-    pawn, wk, bk, wa, wa2 = flip_we_col(pawn, wk, bk, wa, wa2)
+    if (pawn & 7) > 3:
+        # Column is more than 3, i.e., e, f, g or h.
+        pawn = flip_we(pawn)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        wa = flip_we(wa)
+        wa2 = flip_we(wa2)
 
     pslice = wsq_to_pidx24(pawn)
 
@@ -471,7 +537,6 @@ def kaapk_pctoindex(c: Request) -> int:
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + aa_combo
 
-
 def kaakp_pctoindex(c: Request) -> int:
     BLOCK_C = MAX_AAINDEX
     BLOCK_B = 64 * BLOCK_C
@@ -483,7 +548,13 @@ def kaakp_pctoindex(c: Request) -> int:
     bk = c.black_piece_squares[0]
     pawn = c.black_piece_squares[1]
 
-    pawn, wk, bk, wa, wa2 = flip_we_col(pawn, wk, bk, wa, wa2)
+    if (pawn & 7) > 3:
+        # Column is more than 3, i.e., e, f, g or h.
+        pawn = flip_we(pawn)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        wa = flip_we(wa)
+        wa2 = flip_we(wa2)
 
     pawn = flip_ns(pawn)
     pslice = wsq_to_pidx24(pawn)
@@ -495,7 +566,6 @@ def kaakp_pctoindex(c: Request) -> int:
 
     return pslice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + aa_combo
 
-
 def kapkp_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64
     BLOCK_B = 64 * 64
@@ -503,20 +573,30 @@ def kapkp_pctoindex(c: Request) -> int:
 
     wk = c.white_piece_squares[0]
     wa = c.white_piece_squares[1]
-    anchor = c.white_piece_squares[2]
+    pawn_a = c.white_piece_squares[2]
     bk = c.black_piece_squares[0]
-    loosen = c.black_piece_squares[1]
+    pawn_b = c.black_piece_squares[1]
+
+    anchor = pawn_a
+    loosen = pawn_b
 
-    anchor, loosen, wk, bk, wa = flip_we_col(anchor, loosen, wk, bk, wa)
+    if (anchor & 7) > 3:
+        # Column is more than 3, i.e., e, f, g or h.
+        anchor = flip_we(anchor)
+        loosen = flip_we(loosen)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        wa = flip_we(wa)
 
-    pp_slice = wsq_to_pidx24(anchor) * 48 + loosen - 8
+    m = wsq_to_pidx24(anchor)
+    n = loosen - 8
+    pp_slice = m * 48 + n
 
     if idx_is_empty(pp_slice):
         return NOINDEX
 
     return pp_slice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa
 
-
 def kappk_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64
     BLOCK_B = 64 * 64
@@ -530,7 +610,13 @@ def kappk_pctoindex(c: Request) -> int:
 
     anchor, loosen = pp_putanchorfirst(pawn_a, pawn_b)
 
-    anchor, loosen, wk, bk, wa = flip_we_col(anchor, loosen, wk, bk, wa)
+    if (anchor & 7) > 3:
+        # Column is more than 3, i.e., e, f, g or h.
+        anchor = flip_we(anchor)
+        loosen = flip_we(loosen)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        wa = flip_we(wa)
 
     i = wsq_to_pidx24(anchor)
     j = wsq_to_pidx48(loosen)
@@ -542,7 +628,6 @@ def kappk_pctoindex(c: Request) -> int:
 
     return pp_slice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + wa
 
-
 def kppka_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64 * 64
     BLOCK_B = 64 * 64
@@ -556,7 +641,12 @@ def kppka_pctoindex(c: Request) -> int:
 
     anchor, loosen = pp_putanchorfirst(pawn_a, pawn_b)
 
-    anchor, loosen, wk, bk, ba = flip_we_col(anchor, loosen, wk, bk, ba)
+    if (anchor & 7) > 3:
+        anchor = flip_we(anchor)
+        loosen = flip_we(loosen)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        ba = flip_we(ba)
 
     i = wsq_to_pidx24(anchor)
     j = wsq_to_pidx48(loosen)
@@ -568,7 +658,6 @@ def kppka_pctoindex(c: Request) -> int:
 
     return pp_slice * BLOCK_A + wk * BLOCK_B + bk * BLOCK_C + ba
 
-
 def kabck_pctoindex(c: Request) -> int:
     N_WHITE = 4
     N_BLACK = 1
@@ -600,7 +689,6 @@ def kabck_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_A + ws[1] * BLOCK_B + ws[2] * BLOCK_C + ws[3]
 
-
 def kabbk_pctoindex(c: Request) -> int:
     N_WHITE = 4
     N_BLACK = 1
@@ -632,7 +720,6 @@ def kabbk_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai * BLOCK_Bx + ws[1]
 
-
 def kaabk_pctoindex(c: Request) -> int:
     N_WHITE = 4
     N_BLACK = 1
@@ -664,23 +751,45 @@ def kaabk_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai * BLOCK_Bx + ws[3]
 
-
 def aaa_getsubi(x: int, y: int, z: int) -> int:
-    return x + (y - 1) * y // 2 + AAA_BASE[z]
-
+    bse = AAA_BASE[z]
+    calc_idx = x + (y - 1) * y // 2 + bse
+    return calc_idx
 
 def kaaak_pctoindex(c: Request) -> int:
+    N_WHITE = 4
+    N_BLACK = 1
     BLOCK_Ax = MAX_AAAINDEX
-    ws = c.white_piece_squares[:4]
-    bs = c.black_piece_squares[:1]
+
+    ws = c.white_piece_squares[:N_WHITE]
+    bs = c.black_piece_squares[:N_BLACK]
+
     ft = FLIPT[c.black_piece_squares[0]][c.white_piece_squares[0]]
 
-    for flag, flip in [(WE_FLAG, flip_we), (NS_FLAG, flip_ns), (NW_SE_FLAG, flip_nw_se)]:
-        if ft & flag:
-            ws = [flip(i) for i in ws]
-            bs = [flip(i) for i in bs]
+    if (ft & WE_FLAG) != 0:
+        ws = [flip_we(i) for i in ws]
+        bs = [flip_we(i) for i in bs]
+
+    if (ft & NS_FLAG) != 0:
+        ws = [flip_ns(i) for i in ws]
+        bs = [flip_ns(i) for i in bs]
 
-    ws[1:4] = sorted(ws[1:4])
+    if (ft & NW_SE_FLAG) != 0:
+        ws = [flip_nw_se(i) for i in ws]
+        bs = [flip_nw_se(i) for i in bs]
+
+    if ws[2] < ws[1]:
+        tmp = ws[1]
+        ws[1] = ws[2]
+        ws[2] = tmp
+    if ws[3] < ws[2]:
+        tmp = ws[2]
+        ws[2] = ws[3]
+        ws[3] = tmp
+    if ws[2] < ws[1]:
+        tmp = ws[1]
+        ws[1] = ws[2]
+        ws[2] = tmp
 
     ki = KKIDX[bs[0]][ws[0]]
 
@@ -694,7 +803,6 @@ def kaaak_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai
 
-
 def kppkp_pctoindex(c: Request) -> int:
     BLOCK_Ax = MAX_PP48_INDEX * 64 * 64
     BLOCK_Bx = 64 * 64
@@ -706,7 +814,12 @@ def kppkp_pctoindex(c: Request) -> int:
     bk = c.black_piece_squares[0]
     pawn_c = c.black_piece_squares[1]
 
-    pawn_c, wk, pawn_a, pawn_b, bk = flip_we_col(pawn_c, wk, pawn_a, pawn_b, bk)
+    if (pawn_c & 7) > 3:
+        wk = flip_we(wk)
+        pawn_a = flip_we(pawn_a)
+        pawn_b = flip_we(pawn_b)
+        bk = flip_we(bk)
+        pawn_c = flip_we(pawn_c)
 
     i = flip_we(flip_ns(pawn_a)) - 8
     j = flip_we(flip_ns(pawn_b)) - 8
@@ -721,19 +834,28 @@ def kppkp_pctoindex(c: Request) -> int:
 
     return k * BLOCK_Ax + pp48_slice * BLOCK_Bx + wk * BLOCK_Cx + bk
 
-
 def kaakb_pctoindex(c: Request) -> int:
+    N_WHITE = 3
+    N_BLACK = 2
     BLOCK_Bx = 64
     BLOCK_Ax = BLOCK_Bx * MAX_AAINDEX
-    ws = c.white_piece_squares[:3]
-    bs = c.black_piece_squares[:2]
 
     ft = FLIPT[c.black_piece_squares[0]][c.white_piece_squares[0]]
 
-    for flag, flip in [(WE_FLAG, flip_we), (NS_FLAG, flip_ns), (NW_SE_FLAG, flip_nw_se)]:
-        if ft & flag:
-            ws = [flip(i) for i in ws]
-            bs = [flip(i) for i in bs]
+    ws = c.white_piece_squares[:N_WHITE]
+    bs = c.black_piece_squares[:N_BLACK]
+
+    if (ft & WE_FLAG) != 0:
+        ws = [flip_we(i) for i in ws]
+        bs = [flip_we(i) for i in bs]
+
+    if (ft & NS_FLAG) != 0:
+        ws = [flip_ns(i) for i in ws]
+        bs = [flip_ns(i) for i in bs]
+
+    if (ft & NW_SE_FLAG) != 0:
+        ws = [flip_nw_se(i) for i in ws]
+        bs = [flip_nw_se(i) for i in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
     ai = AAIDX[ws[1]][ws[2]]
@@ -743,7 +865,6 @@ def kaakb_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai * BLOCK_Bx + bs[1]
 
-
 def kabkc_pctoindex(c: Request) -> int:
     N_WHITE = 3
     N_BLACK = 2
@@ -757,10 +878,17 @@ def kabkc_pctoindex(c: Request) -> int:
     ws = c.white_piece_squares[:N_WHITE]
     bs = c.black_piece_squares[:N_BLACK]
 
-    for flag, flip in [(WE_FLAG, flip_we), (NS_FLAG, flip_ns), (NW_SE_FLAG, flip_nw_se)]:
-        if ft & flag:
-            ws = [flip(i) for i in ws]
-            bs = [flip(i) for i in bs]
+    if (ft & WE_FLAG) != 0:
+        ws = [flip_we(i) for i in ws]
+        bs = [flip_we(i) for i in bs]
+
+    if (ft & NS_FLAG) != 0:
+        ws = [flip_ns(i) for i in ws]
+        bs = [flip_ns(i) for i in bs]
+
+    if (ft & NW_SE_FLAG) != 0:
+        ws = [flip_nw_se(i) for i in ws]
+        bs = [flip_nw_se(i) for i in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX [black king] [white king]
 
@@ -769,17 +897,23 @@ def kabkc_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ws[1] * BLOCK_Bx + ws[2] * BLOCK_Cx + bs[1]
 
-
 def kpkp_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64
     BLOCK_Bx = 64
 
     wk = c.white_piece_squares[0]
     bk = c.black_piece_squares[0]
-    anchor = c.white_piece_squares[1]
-    loosen = c.black_piece_squares[1]
+    pawn_a = c.white_piece_squares[1]
+    pawn_b = c.black_piece_squares[1]
 
-    anchor, loosen, wk, bk = flip_we_col(anchor, loosen, wk, bk)
+    anchor = pawn_a
+    loosen = pawn_b
+
+    if (anchor & 7) > 3:
+        anchor = flip_we(anchor)
+        loosen = flip_we(loosen)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
 
     m = wsq_to_pidx24(anchor)
     n = loosen - 8
@@ -791,7 +925,6 @@ def kpkp_pctoindex(c: Request) -> int:
 
     return pp_slice * BLOCK_Ax + wk * BLOCK_Bx + bk
 
-
 def kppk_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64
     BLOCK_Bx = 64
@@ -802,7 +935,11 @@ def kppk_pctoindex(c: Request) -> int:
 
     anchor, loosen = pp_putanchorfirst(pawn_a, pawn_b)
 
-    anchor, loosen, wk, bk = flip_we_col(anchor, loosen, wk, bk)
+    if (anchor & 7) > 3:
+        anchor = flip_we(anchor)
+        loosen = flip_we(loosen)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
 
     i = wsq_to_pidx24(anchor)
     j = wsq_to_pidx48(loosen)
@@ -814,7 +951,6 @@ def kppk_pctoindex(c: Request) -> int:
 
     return pp_slice * BLOCK_Ax + wk * BLOCK_Bx + bk
 
-
 def kapk_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64 * 64
     BLOCK_Bx = 64 * 64
@@ -825,17 +961,22 @@ def kapk_pctoindex(c: Request) -> int:
     wk = c.white_piece_squares[0]
     bk = c.black_piece_squares[0]
 
-    if not chess.A2 <= pawn < chess.A8:
+    if not (chess.A2 <= pawn < chess.A8):
         return NOINDEX
 
-    pawn, wk, bk, wa = flip_we_col(pawn, wk, bk, wa)
+    if (pawn & 7) > 3:
+        pawn = flip_we(pawn)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        wa = flip_we(wa)
 
-    sq = pawn ^ 56 - 8 # flip_ns and down one row
+    sq = pawn
+    sq ^= 56  # flip_ns
+    sq -= 8   # Down one row
     pslice = ((sq + (sq & 3)) >> 1)
 
     return pslice * BLOCK_Ax + wk * BLOCK_Bx + bk * BLOCK_Cx + wa
 
-
 def kabk_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64
     BLOCK_Bx = 64
@@ -845,10 +986,17 @@ def kabk_pctoindex(c: Request) -> int:
     ws = c.white_piece_squares
     bs = c.black_piece_squares
 
-    for flag, flip in [(1, flip_we), (2, flip_ns), (4, flip_nw_se)]:
-        if ft & flag:
-            ws = [flip(b) for b in ws]
-            bs = [flip(b) for b in bs]
+    if (ft & 1) != 0:
+        ws = [flip_we(b) for b in ws]
+        bs = [flip_we(b) for b in bs]
+
+    if (ft & 2) != 0:
+        ws = [flip_ns(b) for b in ws]
+        bs = [flip_ns(b) for b in bs]
+
+    if (ft & 4) != 0:
+        ws = [flip_nw_se(b) for b in ws]
+        bs = [flip_nw_se(b) for b in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
 
@@ -857,7 +1005,6 @@ def kabk_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ws[1] * BLOCK_Bx + ws[2]
 
-
 def kakp_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64 * 64
     BLOCK_Bx = 64 * 64
@@ -868,29 +1015,42 @@ def kakp_pctoindex(c: Request) -> int:
     wk = c.white_piece_squares[0]
     bk = c.black_piece_squares[0]
 
-    if not chess.A2 <= pawn < chess.A8:
+    if not (chess.A2 <= pawn < chess.A8):
         return NOINDEX
 
-    pawn, wk, bk, wa = flip_we_col(pawn, wk, bk, wa)
+    if (pawn & 7) > 3:
+        pawn = flip_we(pawn)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
+        wa = flip_we(wa)
 
-    # Down one row
-    pslice = ((pawn - 8) + ((pawn - 8) & 3)) >> 1
+    sq = pawn
+    sq -= 8  # Down one row
+    pslice = (sq + (sq & 3)) >> 1
 
     return pslice * BLOCK_Ax + wk * BLOCK_Bx + bk * BLOCK_Cx + wa
 
-
 def kaak_pctoindex(c: Request) -> int:
+    N_WHITE = 3
+    N_BLACK = 1
     BLOCK_Ax = MAX_AAINDEX
 
     ft = FLIPT[c.black_piece_squares[0]][c.white_piece_squares[0]]
 
-    ws = c.white_piece_squares[:3]
-    bs = c.black_piece_squares[:1]
+    ws = c.white_piece_squares[:N_WHITE]
+    bs = c.black_piece_squares[:N_BLACK]
+
+    if (ft & WE_FLAG) != 0:
+        ws = [flip_we(i) for i in ws]
+        bs = [flip_we(i) for i in bs]
 
-    for flag, flip in [(WE_FLAG, flip_we), (NS_FLAG, flip_ns), (NW_SE_FLAG, flip_nw_se)]:
-        if ft & flag:
-            ws = [flip(i) for i in ws]
-            bs = [flip(i) for i in bs]
+    if (ft & NS_FLAG) != 0:
+        ws = [flip_ns(i) for i in ws]
+        bs = [flip_ns(i) for i in bs]
+
+    if (ft & NW_SE_FLAG) != 0:
+        ws = [flip_nw_se(i) for i in ws]
+        bs = [flip_nw_se(i) for i in bs]
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
     ai = AAIDX[ws[1]][ws[2]]
@@ -900,7 +1060,6 @@ def kaak_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ai
 
-
 def kakb_pctoindex(c: Request) -> int:
     BLOCK_Ax = 64 * 64
     BLOCK_Bx = 64
@@ -910,9 +1069,23 @@ def kakb_pctoindex(c: Request) -> int:
     ws = c.white_piece_squares[:]
     bs = c.black_piece_squares[:]
 
-    for bit, flip in [(1, flip_we), (2, flip_ns), (4, flip_nw_se)]:
-        if ft & bit:
-            ws[0], ws[1], bs[0], bs[1] = flip(ws[0]), flip(ws[1]), flip(bs[0]), flip(bs[1])
+    if (ft & 1) != 0:
+        ws[0] = flip_we(ws[0])
+        ws[1] = flip_we(ws[1])
+        bs[0] = flip_we(bs[0])
+        bs[1] = flip_we(bs[1])
+
+    if (ft & 2) != 0:
+        ws[0] = flip_ns(ws[0])
+        ws[1] = flip_ns(ws[1])
+        bs[0] = flip_ns(bs[0])
+        bs[1] = flip_ns(bs[1])
+
+    if (ft & 4) != 0:
+        ws[0] = flip_nw_se(ws[0])
+        ws[1] = flip_nw_se(ws[1])
+        bs[0] = flip_nw_se(bs[0])
+        bs[1] = flip_nw_se(bs[1])
 
     ki = KKIDX[bs[0]][ws[0]]  # KKIDX[black king][white king]
 
@@ -921,7 +1094,6 @@ def kakb_pctoindex(c: Request) -> int:
 
     return ki * BLOCK_Ax + ws[1] * BLOCK_Bx + bs[1]
 
-
 def kpk_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64
     BLOCK_B = 64
@@ -930,16 +1102,21 @@ def kpk_pctoindex(c: Request) -> int:
     wk = c.white_piece_squares[0]
     bk = c.black_piece_squares[0]
 
-    if not chess.A2 <= pawn < chess.A8:
+    if not (chess.A2 <= pawn < chess.A8):
         return NOINDEX
 
-    pawn, wk, bk = flip_we_col(pawn, wk, bk)
+    if (pawn & 7) > 3:
+        pawn = flip_we(pawn)
+        wk = flip_we(wk)
+        bk = flip_we(bk)
 
-    sq = (pawn ^ 56) - 8  # flip_ns, down one row
+    sq = pawn
+    sq ^= 56  # flip_ns
+    sq -= 8   # Down one row
     pslice = ((sq + (sq & 3)) >> 1)
 
-    return pslice * BLOCK_A + wk * BLOCK_B + bk
-
+    res = pslice * BLOCK_A + wk * BLOCK_B + bk
+    return res
 
 def kpppk_pctoindex(c: Request) -> int:
     BLOCK_A = 64 * 64
@@ -949,16 +1126,26 @@ def kpppk_pctoindex(c: Request) -> int:
     pawn_a = c.white_piece_squares[1]
     pawn_b = c.white_piece_squares[2]
     pawn_c = c.white_piece_squares[3]
+
     bk = c.black_piece_squares[0]
 
-    i, j, k = [x - 8 for x in (pawn_a, pawn_b, pawn_c)]
+    i = pawn_a - 8
+    j = pawn_b - 8
+    k = pawn_c - 8
+
     ppp48_slice = PPP48_IDX[i][j][k]
 
     if idx_is_empty(ppp48_slice):
-        wk, pawn_a, pawn_b, pawn_c, bk = [flip_we(x) for x in (wk, pawn_a, pawn_b, pawn_c, bk)]
+        wk = flip_we(wk)
+        pawn_a = flip_we(pawn_a)
+        pawn_b = flip_we(pawn_b)
+        pawn_c = flip_we(pawn_c)
+        bk = flip_we(bk)
+
+    i = pawn_a - 8
+    j = pawn_b - 8
+    k = pawn_c - 8
 
-    # removing this doesn't impact the tests?
-    i, j, k = [x - 8 for x in (pawn_a, pawn_b, pawn_c)]
     ppp48_slice = PPP48_IDX[i][j][k]
 
     if idx_is_empty(ppp48_slice):
@@ -1143,15 +1330,13 @@ def __init__(self, maxindex: int, slice_n: int, pctoi: Callable[[Request], int])
 
 
 def sortlists(ws: List[int], wp: List[int]) -> Tuple[List[int], List[int]]:
-    z = sorted(zip(wp, ws), reverse=True)
+    z = sorted(zip(wp, ws), key=lambda x: x[0], reverse=True)
     wp2, ws2 = zip(*z)
     return list(ws2), list(wp2)
 
-
 def egtb_block_unpack(side: int, n: int, bp: bytes) -> List[int]:
     return [dtm_unpack(side, i) for i in bp[:n]]
 
-
 def split_index(i: int) -> Tuple[int, int]:
     return divmod(i, ENTRIES_PER_BLOCK)
 
@@ -1175,23 +1360,19 @@ def removepiece(ys: List[int], yp: List[int], j: int) -> None:
     del ys[j]
     del yp[j]
 
-
 def opp(side: int) -> int:
     return 1 if side == 0 else 0
 
-
 def adjust_up(dist: int) -> int:
-    if (dist & INFOMASK) in [iWMATE, iWMATEt, iBMATE, iBMATEt]:
-        return dist + (1 << PLYSHIFT)
-    return dist
+    udist = dist
+    sw = udist & INFOMASK
 
+    if sw in [iWMATE, iWMATEt, iBMATE, iBMATEt]:
+        udist += (1 << PLYSHIFT)
 
-def bestx(side: int, a: int, b: int) -> int:
-    if a == iFORBID:
-        return b
-    if b == iFORBID:
-        return a
+    return udist
 
+def bestx(side: int, a: int, b: int) -> int:
     # 0 = selectfirst
     # 1 = selectlowest
     # 2 = selecthighest
@@ -1204,25 +1385,33 @@ def bestx(side: int, a: int, b: int) -> int:
         [3, 3, 3, 0],  # forbid
     ]
 
+    xorkey = [0, 3]
+
+    if a == iFORBID:
+        return b
+    if b == iFORBID:
+        return a
+
     retu = [a, a, b, b]
 
     if b < a:
-        retu[1:2] = [b, a]
+        retu[1] = b
+        retu[2] = a
 
-    key = comparison[a & 3][b & 3] ^ [0, 3][side]  # ^ xorkey
+    key = comparison[a & 3][b & 3] ^ xorkey[side]
     return retu[key]
 
-
 def unpackdist(d: int) -> Tuple[int, int]:
     return d >> PLYSHIFT, d & INFOMASK
 
-
 def dtm_unpack(stm: int, packed: int) -> int:
-    if packed in [iDRAW, iFORBID]:
-        return packed
+    p = packed
+
+    if p in [iDRAW, iFORBID]:
+        return p
 
-    info = packed & 3
-    store = packed >> 2
+    info = p & 3
+    store = p >> 2
 
     if stm == 0:
         if info == iWMATE:
@@ -1398,23 +1587,28 @@ def probe_dtm(self, board: chess.Board) -> int:
             if req.realside == 1:
                 if req.is_reversed:
                     return ply
-                return -ply
-            if req.is_reversed:
-                return -ply
-            return ply
-
-        if res == iBMATE:
+                else:
+                    return -ply
+            else:
+                if req.is_reversed:
+                    return -ply
+                else:
+                    return ply
+        elif res == iBMATE:
             # Black mates in the stored position.
             if req.realside == 0:
                 if req.is_reversed:
                     return ply
-                return -ply
-            if req.is_reversed:
-                return -ply
-            return ply
-
-        # Draw.
-        return 0
+                else:
+                    return -ply
+            else:
+                if req.is_reversed:
+                    return -ply
+                else:
+                    return ply
+        else:
+            # Draw.
+            return 0
 
     def get_dtm(self, board: chess.Board, default: Optional[int] = None) -> Optional[int]:
         try:
@@ -1450,12 +1644,12 @@ def probe_wdl(self, board: chess.Board) -> int:
         if dtm == 0:
             if board.is_checkmate():
                 return -1
-            return 0
-
-        if dtm > 0:
+            else:
+                return 0
+        elif dtm > 0:
             return 1
-
-        return -1
+        else:
+            return -1
 
     def get_wdl(self, board: chess.Board, default: Optional[int] = None) -> Optional[int]:
         try:
@@ -1601,7 +1795,8 @@ def egtb_block_getsize(self, req: Request, idx: int) -> int:
 
         if (offset + blocksz) > maxindex:
             return maxindex - offset  # Last block size
-        return blocksz  # Size of a normal block
+        else:
+            return blocksz  # Size of a normal block
 
     def _tb_probe(self, req: Request) -> int:
         stream = self._setup_tablebase(req)

From dd4d9c1285d70f1aaffa276244101d9373053c1d Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sun, 23 Feb 2025 22:55:23 +0100
Subject: [PATCH 234/250] Fix ep resolution in chess.gaviota.PythonTablebase
 (fixes #1132)

---
 chess/gaviota.py | 142 +++++++----------------------------------------
 test.py          |   5 ++
 2 files changed, 26 insertions(+), 121 deletions(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index 39173b593..83fb7bb64 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -1356,51 +1356,9 @@ def split_index(i: int) -> Tuple[int, int]:
 iBMATEt = tb_BMATE | 4
 
 
-def removepiece(ys: List[int], yp: List[int], j: int) -> None:
-    del ys[j]
-    del yp[j]
-
 def opp(side: int) -> int:
     return 1 if side == 0 else 0
 
-def adjust_up(dist: int) -> int:
-    udist = dist
-    sw = udist & INFOMASK
-
-    if sw in [iWMATE, iWMATEt, iBMATE, iBMATEt]:
-        udist += (1 << PLYSHIFT)
-
-    return udist
-
-def bestx(side: int, a: int, b: int) -> int:
-    # 0 = selectfirst
-    # 1 = selectlowest
-    # 2 = selecthighest
-    # 3 = selectsecond
-    comparison = [
-        # draw, wmate, bmate, forbid
-        [0, 3, 0, 0],  # draw
-        [0, 1, 0, 0],  # wmate
-        [3, 3, 2, 0],  # bmate
-        [3, 3, 3, 0],  # forbid
-    ]
-
-    xorkey = [0, 3]
-
-    if a == iFORBID:
-        return b
-    if b == iFORBID:
-        return a
-
-    retu = [a, a, b, b]
-
-    if b < a:
-        retu[1] = b
-        retu[2] = a
-
-    key = comparison[a & 3][b & 3] ^ xorkey[side]
-    return retu[key]
-
 def unpackdist(d: int) -> Tuple[int, int]:
     return d >> PLYSHIFT, d & INFOMASK
 
@@ -1492,12 +1450,11 @@ class Request:
     black_piece_types: List[int]
     is_reversed: bool
 
-    def __init__(self, white_squares: List[int], white_types: List[chess.PieceType], black_squares: List[int], black_types: List[chess.PieceType], side: int, epsq: int):
+    def __init__(self, white_squares: List[int], white_types: List[chess.PieceType], black_squares: List[int], black_types: List[chess.PieceType], side: int):
         self.white_squares, self.white_types = sortlists(white_squares, white_types)
         self.black_squares, self.black_types = sortlists(black_squares, black_types)
         self.realside = side
         self.side = side
-        self.epsq = epsq
 
 
 @dataclasses.dataclass
@@ -1569,17 +1526,34 @@ def probe_dtm(self, board: chess.Board) -> int:
         if board.occupied == board.kings:
             return 0
 
+        # Resolve en passant.
+        dtm = self._probe_dtm_no_ep(board)
+        for move in board.generate_legal_ep():
+            try:
+                board.push(move)
+
+                child_dtm = -self._probe_dtm_no_ep(board)
+                if child_dtm > 0:
+                    child_dtm += 1
+                elif child_dtm < 0:
+                    child_dtm -= 1
+
+                dtm = min(dtm, child_dtm) if dtm * child_dtm > 0 else max(dtm, child_dtm)
+            finally:
+                board.pop()
+        return dtm
+
+    def _probe_dtm_no_ep(self, board: chess.Board) -> int:
         # Prepare the tablebase request.
         white_squares = list(chess.SquareSet(board.occupied_co[chess.WHITE]))
         white_types = [typing.cast(chess.PieceType, board.piece_type_at(sq)) for sq in white_squares]
         black_squares = list(chess.SquareSet(board.occupied_co[chess.BLACK]))
         black_types = [typing.cast(chess.PieceType, board.piece_type_at(sq)) for sq in black_squares]
         side = 0 if (board.turn == chess.WHITE) else 1
-        epsq = board.ep_square if board.ep_square else NOSQUARE
-        req = Request(white_squares, white_types, black_squares, black_types, side, epsq)
+        req = Request(white_squares, white_types, black_squares, black_types, side)
 
         # Probe.
-        dtm = self.egtb_get_dtm(req)
+        dtm = self._tb_probe(req)
         ply, res = unpackdist(dtm)
 
         if res == iWMATE:
@@ -1675,10 +1649,7 @@ def _setup_tablebase(self, req: Request) -> BinaryIO:
             req.white_piece_types = req.black_types
             req.black_piece_squares = [flip_ns(s) for s in req.white_squares]
             req.black_piece_types = req.white_types
-
             req.side = opp(req.side)
-            if req.epsq != NOSQUARE:
-                req.epsq = flip_ns(req.epsq)
         else:
             raise MissingTableError(f"no gaviota table available for: {white_letters.upper()}v{black_letters.upper()}")
 
@@ -1708,77 +1679,6 @@ def close(self) -> None:
             _, stream = self.streams.popitem()
             stream.close()
 
-    def egtb_get_dtm(self, req: Request) -> int:
-        dtm = self._tb_probe(req)
-
-        if req.epsq != NOSQUARE:
-            capturer_a = 0
-            capturer_b = 0
-            xed = 0
-
-            # Flip for move generation.
-            if req.side == 0:
-                xs = list(req.white_piece_squares)
-                xp = list(req.white_piece_types)
-                ys = list(req.black_piece_squares)
-                yp = list(req.black_piece_types)
-            else:
-                xs = list(req.black_piece_squares)
-                xp = list(req.black_piece_types)
-                ys = list(req.white_piece_squares)
-                yp = list(req.white_piece_types)
-
-            # Captured pawn trick: from ep square to captured.
-            xed = req.epsq ^ (1 << 3)
-
-            # Find captured index (j).
-            try:
-                j = ys.index(xed)
-            except ValueError:
-                j = -1
-
-            # Try first possible ep capture.
-            if 0 == (0x88 & (map88(xed) + 1)):
-                capturer_a = xed + 1
-
-            # Try second possible ep capture.
-            if 0 == (0x88 & (map88(xed) - 1)):
-                capturer_b = xed - 1
-
-            if (j > -1) and (ys[j] == xed):
-                # Find capturers (i).
-                for i in range(len(xs)):
-                    if xp[i] == chess.PAWN and (xs[i] == capturer_a or xs[i] == capturer_b):
-                        epscore = iFORBID
-
-                        # Copy position.
-                        xs_after = xs[:]
-                        ys_after = ys[:]
-                        xp_after = xp[:]
-                        yp_after = yp[:]
-
-                        # Execute capture.
-                        xs_after[i] = req.epsq
-                        removepiece(ys_after, yp_after, j)
-
-                        # Flip back.
-                        if req.side == 1:
-                            xs_after, ys_after = ys_after, xs_after
-                            xp_after, yp_after = yp_after, xp_after
-
-                        # Make subrequest.
-                        subreq = Request(xs_after, xp_after, ys_after, yp_after, opp(req.side), NOSQUARE)
-                        try:
-                            epscore = self._tb_probe(subreq)
-                            epscore = adjust_up(epscore)
-
-                            # Choose to ep or not.
-                            dtm = bestx(req.side, epscore, dtm)
-                        except IndexError:
-                            break
-
-        return dtm
-
     def egtb_block_getnumber(self, req: Request, idx: int) -> int:
         maxindex = EGKEY[req.egkey].maxindex
 
diff --git a/test.py b/test.py
index 6db84d254..7a3a3cdef 100755
--- a/test.py
+++ b/test.py
@@ -4348,6 +4348,11 @@ def test_two_ep(self):
         board = chess.Board("K7/8/8/6k1/5pPp/8/8/8 b - g3 0 61")
         self.assertEqual(self.tablebase.probe_dtm(board), 17)
 
+    @catchAndSkip(chess.gaviota.MissingTableError, "need KPvKP.gtb.cp4")
+    def test_ep_is_best(self):
+        board = chess.Board("8/8/7k/8/1pP5/7K/8/8 b - c3 0 1")
+        self.assertEqual(self.tablebase.probe_dtm(board), 19)
+
 
 class SvgTestCase(unittest.TestCase):
 

From 06de70e2e87969743dfa2196db1e2cbe687a08a8 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 24 Feb 2025 21:52:23 +0100
Subject: [PATCH 235/250] Fix checkmating ep capture in
 chess.gaviota.PythonTablebase

---
 chess/gaviota.py | 17 ++++++++++-------
 test.py          | 10 ++++++++++
 2 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index 83fb7bb64..281df836b 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -1493,8 +1493,8 @@ def probe_dtm(self, board: chess.Board) -> int:
         Probes for depth to mate information.
 
         The absolute value is the number of half-moves until forced mate
-        (or ``0`` in drawn positions). The value is positive if the
-        side to move is winning, otherwise it is negative.
+        (or ``0`` in drawn or checkmated positions). The value is positive if
+        the side to move is winning, otherwise it is negative or 0.
 
         In the example position, white to move will get mated in 10 half-moves:
 
@@ -1532,11 +1532,14 @@ def probe_dtm(self, board: chess.Board) -> int:
             try:
                 board.push(move)
 
-                child_dtm = -self._probe_dtm_no_ep(board)
-                if child_dtm > 0:
-                    child_dtm += 1
-                elif child_dtm < 0:
-                    child_dtm -= 1
+                if board.is_checkmate():
+                    child_dtm = 1
+                else:
+                    child_dtm = -self._probe_dtm_no_ep(board)
+                    if child_dtm > 0:
+                        child_dtm += 1
+                    elif child_dtm < 0:
+                        child_dtm -= 1
 
                 dtm = min(dtm, child_dtm) if dtm * child_dtm > 0 else max(dtm, child_dtm)
             finally:
diff --git a/test.py b/test.py
index 7a3a3cdef..c120c049f 100755
--- a/test.py
+++ b/test.py
@@ -4353,6 +4353,16 @@ def test_ep_is_best(self):
         board = chess.Board("8/8/7k/8/1pP5/7K/8/8 b - c3 0 1")
         self.assertEqual(self.tablebase.probe_dtm(board), 19)
 
+    @catchAndSkip(chess.gaviota.MissingTableError, "need KQPvKP.gtb.cp4")
+    def test_ep_is_mate(self):
+        # The resulting mate.
+        board = chess.Board("5Q2/7k/6P1/5K2/8/8/8/8 b - - 0 1")
+        self.assertEqual(self.tablebase.probe_dtm(board), 0)
+
+        # Ep leads to the previously tested mate position.
+        board = chess.Board("5Q2/7k/8/5KpP/8/8/8/8 w - g6 0 1")
+        self.assertEqual(self.tablebase.probe_dtm(board), 1)
+
 
 class SvgTestCase(unittest.TestCase):
 

From 45f616fae51a2b08ca4b4d0c01ddddf175d81ff9 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Tue, 25 Feb 2025 20:05:16 +0100
Subject: [PATCH 236/250] Supprt Python 3.13

---
 .github/workflows/test.yml | 8 ++++----
 setup.py                   | 1 +
 tox.ini                    | 2 +-
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 035b7f3d1..22d3b278a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.12"
+          python-version: "3.13"
       - run: pip install -e .
       - run: python examples/perft/perft.py -t 1 examples/perft/random.perft --max-nodes 10000
       - run: python examples/perft/perft.py -t 1 examples/perft/chess960.perft --max-nodes 100000
@@ -39,7 +39,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -59,7 +59,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.12"
+          python-version: "3.13"
       - run: sudo apt-get update && sudo apt-get install -y docutils-common
       - run: python setup.py --long-description | rst2html --strict --no-raw > /dev/null
       - run: pip install -e .
diff --git a/setup.py b/setup.py
index b825adb44..9d6aa8c58 100755
--- a/setup.py
+++ b/setup.py
@@ -83,6 +83,7 @@ def read_description():
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "Topic :: Games/Entertainment :: Board Games",
         "Topic :: Games/Entertainment :: Turn Based Strategy",
         "Topic :: Software Development :: Libraries :: Python Modules",
diff --git a/tox.ini b/tox.ini
index 8d8033676..5970b2c79 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py38,py39,py310,py311
+envlist = py38,py39,py310,py311,py312,py313
 
 [testenv]
 passenv = LD_LIBRARY_PATH

From b3c1f62c82b5fc40b14fa33bc9edd31cef68a944 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Tue, 25 Feb 2025 19:20:27 +0100
Subject: [PATCH 237/250] Prepare 1.11.2

---
 CHANGELOG.rst     | 8 ++++++++
 chess/__init__.py | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 05b899a20..03a9555d1 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,14 @@
 Changelog for python-chess
 ==========================
 
+New in v1.11.2 (25th Feb 2025)
+------------------------------
+
+Bugfixes:
+
+* Fix ``chess.gaviota.PythonTablebase`` does not properly resolve positions
+  where en passant captures are the best move.
+
 New in v1.11.1 (9th Oct 2024)
 -----------------------------
 
diff --git a/chess/__init__.py b/chess/__init__.py
index 8d0a68258..268f91cd5 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -11,7 +11,7 @@
 
 __email__ = "niklas.fiekas@backscattering.de"
 
-__version__ = "1.11.1"
+__version__ = "1.11.2"
 
 import collections
 import copy

From 2b8b0eb06accff3c4dea2e1cec108b3900a4f1d5 Mon Sep 17 00:00:00 2001
From: Mark Harrison <MarkZH@users.noreply.github.com>
Date: Mon, 24 Mar 2025 01:54:37 -0700
Subject: [PATCH 238/250] Add some missing docstrings

This should cause these methods to appear in the readthedocs docs.
---
 chess/__init__.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/chess/__init__.py b/chess/__init__.py
index 268f91cd5..28bcad0cd 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -1810,11 +1810,13 @@ def ply(self) -> int:
         return 2 * (self.fullmove_number - 1) + (self.turn == BLACK)
 
     def remove_piece_at(self, square: Square) -> Optional[Piece]:
+        """Remove a piece, if any, from the given square and return the removed piece."""
         piece = super().remove_piece_at(square)
         self.clear_stack()
         return piece
 
     def set_piece_at(self, square: Square, piece: Optional[Piece], promoted: bool = False) -> None:
+        """Place a piece on a square."""
         super().set_piece_at(square, piece, promoted=promoted)
         self.clear_stack()
 
@@ -1998,6 +2000,7 @@ def is_pseudo_legal(self, move: Move) -> bool:
         return bool(self.attacks_mask(move.from_square) & to_mask)
 
     def is_legal(self, move: Move) -> bool:
+        """Check if a move is legal in the current position."""
         return not self.is_variant_end() and self.is_pseudo_legal(move) and not self.is_into_check(move)
 
     def is_variant_end(self) -> bool:
@@ -2034,9 +2037,27 @@ def is_variant_draw(self) -> bool:
         return False
 
     def is_game_over(self, *, claim_draw: bool = False) -> bool:
+        """
+        Check if the game is over by any rule.
+
+        The game is not considered to be over by the
+        :func:`fifty-move rule <chess.Board.can_claim_fifty_moves()>` or
+        :func:`threefold repetition <chess.Board.can_claim_threefold_repetition()>`,
+        unless *claim_draw* is given. Note that checking the latter can be
+        slow.
+        """
         return self.outcome(claim_draw=claim_draw) is not None
 
     def result(self, *, claim_draw: bool = False) -> str:
+        """
+        Return the result of a game: 1-0, 0-1, 1/2-1/2, or *.
+
+        The game is not considered to be over by the
+        :func:`fifty-move rule <chess.Board.can_claim_fifty_moves()>` or
+        :func:`threefold repetition <chess.Board.can_claim_threefold_repetition()>`,
+        unless *claim_draw* is given. Note that checking the latter can be
+        slow.
+        """
         outcome = self.outcome(claim_draw=claim_draw)
         return outcome.result() if outcome else "*"
 

From b2144c2564f740ea120d037e9ec6129d8a3bea2c Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 3 Oct 2025 23:01:01 +0200
Subject: [PATCH 239/250] Remove explicit CodeQL configuration

---
 .github/workflows/codeql.yml | 18 ------------------
 1 file changed, 18 deletions(-)
 delete mode 100644 .github/workflows/codeql.yml

diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
deleted file mode 100644
index bc991c885..000000000
--- a/.github/workflows/codeql.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-name: CodeQL
-
-on: [push, pull_request]
-
-jobs:
-  analyze:
-    name: Analyze
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-    steps:
-      - uses: actions/checkout@v4
-      - uses: github/codeql-action/init@v3
-        with:
-          languages: python
-      - uses: github/codeql-action/analyze@v3

From 760360b8ddb65129aea46f84d99b5491e6ed6435 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 3 Oct 2025 23:04:49 +0200
Subject: [PATCH 240/250] Explicitly specify CI workflow permissions

---
 .github/workflows/test.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 22d3b278a..9eca0fce3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -2,6 +2,9 @@ name: Test
 
 on: [push, pull_request]
 
+permissions:
+  contents: read
+
 jobs:
   test:
     strategy:

From 6b1cfedd442a05767ee28c7752a800ad4190f423 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Fri, 3 Oct 2025 23:14:56 +0200
Subject: [PATCH 241/250] Fix chess.gaviota bytearray usage does not pass mypy
 1.18

---
 chess/gaviota.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index 281df836b..dc19557cd 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -1716,7 +1716,7 @@ def _tb_probe(self, req: Request) -> int:
             z = self.egtb_block_getsize_zipped(req.egkey, block)
 
             self.egtb_block_park(req.egkey, block, stream)
-            buffer_zipped = stream.read(z)
+            buffer_zipped: bytearray | bytes = stream.read(z)
 
             if buffer_zipped[0] == 0:
                 # If flag is zero, plain LZMA is following.

From 71f5a21fe9a83770081fa9f7d2deb3835db984e4 Mon Sep 17 00:00:00 2001
From: Jackson Hall <jacksonthall22@gmail.com>
Date: Sat, 4 Oct 2025 16:52:41 -0400
Subject: [PATCH 242/250] Add and use rank/file constants

---
 chess/__init__.py | 80 +++++++++++++++++++++++++++++------------------
 chess/gaviota.py  |  8 ++---
 chess/syzygy.py   |  2 +-
 3 files changed, 55 insertions(+), 35 deletions(-)

diff --git a/chess/__init__.py b/chess/__init__.py
index 28bcad0cd..3d3dad4f0 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -64,8 +64,28 @@ def piece_name(piece_type: PieceType) -> str:
     "P": "♙", "p": "♟",
 }
 
+File: TypeAlias = int
+FILE_A: File = 0
+FILE_B: File = 1
+FILE_C: File = 2
+FILE_D: File = 3
+FILE_E: File = 4
+FILE_F: File = 5
+FILE_G: File = 6
+FILE_H: File = 7
+FILES = [FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H]
 FILE_NAMES = ["a", "b", "c", "d", "e", "f", "g", "h"]
 
+Rank: TypeAlias = int
+RANK_1: Rank = 0
+RANK_2: Rank = 1
+RANK_3: Rank = 2
+RANK_4: Rank = 3
+RANK_5: Rank = 4
+RANK_6: Rank = 5
+RANK_7: Rank = 6
+RANK_8: Rank = 7
+RANKS = [RANK_1, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8]
 RANK_NAMES = ["1", "2", "3", "4", "5", "6", "7", "8"]
 
 STARTING_FEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
@@ -251,15 +271,15 @@ def square_name(square: Square) -> str:
     """Gets the name of the square, like ``a3``."""
     return SQUARE_NAMES[square]
 
-def square(file_index: int, rank_index: int) -> Square:
+def square(file_index: File, rank_index: Rank) -> Square:
     """Gets a square number by file and rank index."""
     return rank_index * 8 + file_index
 
-def square_file(square: Square) -> int:
+def square_file(square: Square) -> File:
     """Gets the file index of the square where ``0`` is the a-file."""
     return square & 7
 
-def square_rank(square: Square) -> int:
+def square_rank(square: Square) -> Rank:
     """Gets the rank index of the square where ``0`` is the first rank."""
     return square >> 3
 
@@ -376,24 +396,24 @@ def square_mirror(square: Square) -> Square:
 BB_LIGHT_SQUARES: Bitboard = 0x55aa_55aa_55aa_55aa
 BB_DARK_SQUARES: Bitboard = 0xaa55_aa55_aa55_aa55
 
-BB_FILE_A: Bitboard = 0x0101_0101_0101_0101 << 0
-BB_FILE_B: Bitboard = 0x0101_0101_0101_0101 << 1
-BB_FILE_C: Bitboard = 0x0101_0101_0101_0101 << 2
-BB_FILE_D: Bitboard = 0x0101_0101_0101_0101 << 3
-BB_FILE_E: Bitboard = 0x0101_0101_0101_0101 << 4
-BB_FILE_F: Bitboard = 0x0101_0101_0101_0101 << 5
-BB_FILE_G: Bitboard = 0x0101_0101_0101_0101 << 6
-BB_FILE_H: Bitboard = 0x0101_0101_0101_0101 << 7
+BB_FILE_A: Bitboard = 0x0101_0101_0101_0101 << FILE_A
+BB_FILE_B: Bitboard = 0x0101_0101_0101_0101 << FILE_B
+BB_FILE_C: Bitboard = 0x0101_0101_0101_0101 << FILE_C
+BB_FILE_D: Bitboard = 0x0101_0101_0101_0101 << FILE_D
+BB_FILE_E: Bitboard = 0x0101_0101_0101_0101 << FILE_E
+BB_FILE_F: Bitboard = 0x0101_0101_0101_0101 << FILE_F
+BB_FILE_G: Bitboard = 0x0101_0101_0101_0101 << FILE_G
+BB_FILE_H: Bitboard = 0x0101_0101_0101_0101 << FILE_H
 BB_FILES: List[Bitboard] = [BB_FILE_A, BB_FILE_B, BB_FILE_C, BB_FILE_D, BB_FILE_E, BB_FILE_F, BB_FILE_G, BB_FILE_H]
 
-BB_RANK_1: Bitboard = 0xff << (8 * 0)
-BB_RANK_2: Bitboard = 0xff << (8 * 1)
-BB_RANK_3: Bitboard = 0xff << (8 * 2)
-BB_RANK_4: Bitboard = 0xff << (8 * 3)
-BB_RANK_5: Bitboard = 0xff << (8 * 4)
-BB_RANK_6: Bitboard = 0xff << (8 * 5)
-BB_RANK_7: Bitboard = 0xff << (8 * 6)
-BB_RANK_8: Bitboard = 0xff << (8 * 7)
+BB_RANK_1: Bitboard = 0xff << (8 * RANK_1)
+BB_RANK_2: Bitboard = 0xff << (8 * RANK_2)
+BB_RANK_3: Bitboard = 0xff << (8 * RANK_3)
+BB_RANK_4: Bitboard = 0xff << (8 * RANK_4)
+BB_RANK_5: Bitboard = 0xff << (8 * RANK_5)
+BB_RANK_6: Bitboard = 0xff << (8 * RANK_6)
+BB_RANK_7: Bitboard = 0xff << (8 * RANK_7)
+BB_RANK_8: Bitboard = 0xff << (8 * RANK_8)
 BB_RANKS: List[Bitboard] = [BB_RANK_1, BB_RANK_2, BB_RANK_3, BB_RANK_4, BB_RANK_5, BB_RANK_6, BB_RANK_7, BB_RANK_8]
 
 BB_BACKRANKS: Bitboard = BB_RANK_1 | BB_RANK_8
@@ -1847,7 +1867,7 @@ def generate_pseudo_legal_moves(self, from_mask: Bitboard = BB_ALL, to_mask: Bit
                 self.occupied_co[not self.turn] & to_mask)
 
             for to_square in scan_reversed(targets):
-                if square_rank(to_square) in [0, 7]:
+                if square_rank(to_square) in [RANK_1, RANK_8]:
                     yield Move(from_square, to_square, QUEEN)
                     yield Move(from_square, to_square, ROOK)
                     yield Move(from_square, to_square, BISHOP)
@@ -1870,7 +1890,7 @@ def generate_pseudo_legal_moves(self, from_mask: Bitboard = BB_ALL, to_mask: Bit
         for to_square in scan_reversed(single_moves):
             from_square = to_square + (8 if self.turn == BLACK else -8)
 
-            if square_rank(to_square) in [0, 7]:
+            if square_rank(to_square) in [RANK_1, RANK_8]:
                 yield Move(from_square, to_square, QUEEN)
                 yield Move(from_square, to_square, ROOK)
                 yield Move(from_square, to_square, BISHOP)
@@ -1897,7 +1917,7 @@ def generate_pseudo_legal_ep(self, from_mask: Bitboard = BB_ALL, to_mask: Bitboa
         capturers = (
             self.pawns & self.occupied_co[self.turn] & from_mask &
             BB_PAWN_ATTACKS[not self.turn][self.ep_square] &
-            BB_RANKS[4 if self.turn else 3])
+            BB_RANKS[RANK_5 if self.turn else RANK_4])
 
         for capturer in scan_reversed(capturers):
             yield Move(capturer, self.ep_square)
@@ -1977,9 +1997,9 @@ def is_pseudo_legal(self, move: Move) -> bool:
             if piece != PAWN:
                 return False
 
-            if self.turn == WHITE and square_rank(move.to_square) != 7:
+            if self.turn == WHITE and square_rank(move.to_square) != RANK_8:
                 return False
-            elif self.turn == BLACK and square_rank(move.to_square) != 0:
+            elif self.turn == BLACK and square_rank(move.to_square) != RANK_1:
                 return False
 
         # Handle castling.
@@ -2401,18 +2421,18 @@ def push(self, move: Move) -> None:
             else:
                 self.castling_rights &= ~BB_RANK_8
         elif captured_piece_type == KING and not self.promoted & to_bb:
-            if self.turn == WHITE and square_rank(move.to_square) == 7:
+            if self.turn == WHITE and square_rank(move.to_square) == RANK_8:
                 self.castling_rights &= ~BB_RANK_8
-            elif self.turn == BLACK and square_rank(move.to_square) == 0:
+            elif self.turn == BLACK and square_rank(move.to_square) == RANK_1:
                 self.castling_rights &= ~BB_RANK_1
 
         # Handle special pawn moves.
         if piece_type == PAWN:
             diff = move.to_square - move.from_square
 
-            if diff == 16 and square_rank(move.from_square) == 1:
+            if diff == 16 and square_rank(move.from_square) == RANK_2:
                 self.ep_square = move.from_square + 8
-            elif diff == -16 and square_rank(move.from_square) == 6:
+            elif diff == -16 and square_rank(move.from_square) == RANK_7:
                 self.ep_square = move.from_square - 8
             elif move.to_square == ep_square and abs(diff) in [7, 9] and not captured_piece_type:
                 # Remove pawns captured en passant.
@@ -3605,11 +3625,11 @@ def _valid_ep_square(self) -> Optional[Square]:
             return None
 
         if self.turn == WHITE:
-            ep_rank = 5
+            ep_rank = RANK_6
             pawn_mask = shift_down(BB_SQUARES[self.ep_square])
             seventh_rank_mask = shift_up(BB_SQUARES[self.ep_square])
         else:
-            ep_rank = 2
+            ep_rank = RANK_3
             pawn_mask = shift_up(BB_SQUARES[self.ep_square])
             seventh_rank_mask = shift_down(BB_SQUARES[self.ep_square])
 
diff --git a/chess/gaviota.py b/chess/gaviota.py
index dc19557cd..c352a27ca 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -110,12 +110,12 @@ def idx_is_empty(x: int) -> int:
 def flip_type(x: chess.Square, y: chess.Square) -> int:
     ret = 0
 
-    if chess.square_file(x) > 3:
+    if chess.square_file(x) > chess.FILE_D:
         x = flip_we(x)
         y = flip_we(y)
         ret |= 1
 
-    if chess.square_rank(x) > 3:
+    if chess.square_rank(x) > chess.RANK_4:
         x = flip_ns(x)
         y = flip_ns(y)
         ret |= 2
@@ -351,11 +351,11 @@ def init_ppidx() -> Tuple[List[List[int]], List[int], List[int]]:
 
 
 def norm_kkindex(x: chess.Square, y: chess.Square) -> Tuple[int, int]:
-    if chess.square_file(x) > 3:
+    if chess.square_file(x) > chess.FILE_D:
         x = flip_we(x)
         y = flip_we(y)
 
-    if chess.square_rank(x) > 3:
+    if chess.square_rank(x) > chess.RANK_4:
         x = flip_ns(x)
         y = flip_ns(y)
 
diff --git a/chess/syzygy.py b/chess/syzygy.py
index c61890550..0c6b7822c 100644
--- a/chess/syzygy.py
+++ b/chess/syzygy.py
@@ -761,7 +761,7 @@ def calc_symlen(self, d: PairsData, s: int, tmp: List[int]) -> None:
             d.symlen[s] = d.symlen[s1] + d.symlen[s2] + 1
         tmp[s] = 1
 
-    def pawn_file(self, pos: List[chess.Square]) -> int:
+    def pawn_file(self, pos: List[chess.Square]) -> chess.File:
         for i in range(1, self.pawns[0]):
             if FLAP[pos[0]] > FLAP[pos[i]]:
                 pos[0], pos[i] = pos[i], pos[0]

From bd8074d20e7aa667315b54470d0f3aae6390e69d Mon Sep 17 00:00:00 2001
From: Jackson Hall <jacksonthall22@gmail.com>
Date: Sat, 4 Oct 2025 20:47:45 -0400
Subject: [PATCH 243/250] Add `parse_file`/`parse_rank`, `file_name`/rank_name`

---
 chess/__init__.py | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/chess/__init__.py b/chess/__init__.py
index 3d3dad4f0..84bfa632a 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -275,6 +275,32 @@ def square(file_index: File, rank_index: Rank) -> Square:
     """Gets a square number by file and rank index."""
     return rank_index * 8 + file_index
 
+def parse_file(name: str) -> File:
+    """
+    Gets the file index for the given file *name*
+    (e.g., ``a`` returns ``0``).
+
+    :raises: :exc:`ValueError` if the file name is invalid.
+    """
+    return FILE_NAMES.index(name)
+
+def file_name(file: File) -> str:
+    """Gets the name of the file, like ``a``."""
+    return FILE_NAMES[file]
+
+def parse_rank(name: str) -> File:
+    """
+    Gets the rank index for the given rank *name*
+    (e.g., ``1`` returns ``0``).
+
+    :raises: :exc:`ValueError` if the rank name is invalid.
+    """
+    return FILE_NAMES.index(name)
+
+def rank_name(rank: Rank) -> str:
+    """Gets the name of the rank, like ``1``."""
+    return FILE_NAMES[rank]
+
 def square_file(square: Square) -> File:
     """Gets the file index of the square where ``0`` is the a-file."""
     return square & 7

From 376d603694913a82bcb2efa594972a5fba5804f6 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 11 Oct 2025 09:20:54 +0200
Subject: [PATCH 244/250] Explicitly support Python 3.14

---
 .github/workflows/test.yml | 24 ++++++++++++------------
 setup.py                   |  1 +
 tox.ini                    |  2 +-
 3 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9eca0fce3..6b31bce24 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,11 +10,11 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - run: .github/workflows/setup-${{ matrix.os }}.sh
@@ -24,10 +24,10 @@ jobs:
   perft:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v5
+      - uses: actions/setup-python@v6
         with:
-          python-version: "3.13"
+          python-version: "3.14"
       - run: pip install -e .
       - run: python examples/perft/perft.py -t 1 examples/perft/random.perft --max-nodes 10000
       - run: python examples/perft/perft.py -t 1 examples/perft/chess960.perft --max-nodes 100000
@@ -42,11 +42,11 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - run: pip install -e .
@@ -59,10 +59,10 @@ jobs:
   readme:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v5
+      - uses: actions/setup-python@v6
         with:
-          python-version: "3.13"
+          python-version: "3.14"
       - run: sudo apt-get update && sudo apt-get install -y docutils-common
       - run: python setup.py --long-description | rst2html --strict --no-raw > /dev/null
       - run: pip install -e .
diff --git a/setup.py b/setup.py
index 9d6aa8c58..5815947cd 100755
--- a/setup.py
+++ b/setup.py
@@ -84,6 +84,7 @@ def read_description():
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
+        "Programming Language :: Python :: 3.14",
         "Topic :: Games/Entertainment :: Board Games",
         "Topic :: Games/Entertainment :: Turn Based Strategy",
         "Topic :: Software Development :: Libraries :: Python Modules",
diff --git a/tox.ini b/tox.ini
index 5970b2c79..493a46feb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py38,py39,py310,py311,py312,py313
+envlist = py38,py39,py310,py311,py312,py313,py314
 
 [testenv]
 passenv = LD_LIBRARY_PATH

From e4386c2f1efcb686c1d6222681cc84d1f0b06ded Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 11 Oct 2025 15:25:33 +0200
Subject: [PATCH 245/250] Remove chess.engine.DefaultEventLoopPolicy (breaking
 change forced by Python)

---
 chess/engine.py | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/chess/engine.py b/chess/engine.py
index b979b278f..8482c31ba 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -50,10 +50,6 @@ def override(fn: F, /) -> F:
 MANAGED_OPTIONS = ["uci_chess960", "uci_variant", "multipv", "ponder"]
 
 
-# No longer needed, but alias kept around for compatibility.
-EventLoopPolicy = asyncio.DefaultEventLoopPolicy
-
-
 def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Coroutine[Any, Any, None]], *, name: Optional[str] = None, debug: Optional[bool] = None) -> T:
     """
     Runs ``coroutine(future)`` in a new event loop on a background thread.

From e974a37e52a59709a0988872a12c1f01244a8c15 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 11 Oct 2025 15:30:39 +0200
Subject: [PATCH 246/250] Fix test_sf_forced_mates() failing due to ambiguous
 mate

---
 test.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test.py b/test.py
index c120c049f..2ebd357d0 100755
--- a/test.py
+++ b/test.py
@@ -3079,7 +3079,7 @@ def test_sf_forced_mates(self):
 
             for epd in epds:
                 operations = board.set_epd(epd)
-                result = engine.play(board, chess.engine.Limit(mate=5), game=object())
+                result = engine.play(board, chess.engine.Limit(mate=3), game=object())
                 self.assertIn(result.move, operations["bm"], operations["id"])
 
     @catchAndSkip(FileNotFoundError, "need stockfish")

From 8412bd56a282f7fe7071a8b1788b6b791d5e7b0e Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 11 Oct 2025 15:33:30 +0200
Subject: [PATCH 247/250] asyncio.iscoroutinefunction() ->
 inspect.iscoroutinefunction()

---
 chess/engine.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/chess/engine.py b/chess/engine.py
index 8482c31ba..913940190 100644
--- a/chess/engine.py
+++ b/chess/engine.py
@@ -8,6 +8,7 @@
 import copy
 import dataclasses
 import enum
+import inspect
 import logging
 import math
 import shlex
@@ -58,7 +59,7 @@ def run_in_background(coroutine: Callable[[concurrent.futures.Future[T]], Corout
     The coroutine and all remaining tasks continue running in the background
     until complete.
     """
-    assert asyncio.iscoroutinefunction(coroutine)
+    assert inspect.iscoroutinefunction(coroutine)
 
     future: concurrent.futures.Future[T] = concurrent.futures.Future()
 

From 624d3a730c180e749ea04a473a828b9c31ff52a4 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Sat, 11 Oct 2025 15:38:19 +0200
Subject: [PATCH 248/250] Do not fail-fast matrix jobs that may have
 interesting results

---
 .github/workflows/test.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6b31bce24..9d0880bb4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,6 +11,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest]
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+      fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v5
@@ -43,6 +44,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest]
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+      fail-fast: false
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5

From 4d9b3bfd860bfa95731d4e208fd98c7c10a15533 Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Mon, 27 Oct 2025 21:24:16 +0100
Subject: [PATCH 249/250] Fix Gaviota tables opened as writable (fixes #1166)

---
 chess/gaviota.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chess/gaviota.py b/chess/gaviota.py
index c352a27ca..8beb18d4d 100644
--- a/chess/gaviota.py
+++ b/chess/gaviota.py
@@ -1663,7 +1663,7 @@ def _open_tablebase(self, req: Request) -> BinaryIO:
 
         if stream is None:
             path = self.available_tables[req.egkey]
-            stream = open(path, "rb+")
+            stream = open(path, "rb")
             self.egtb_loadindexes(req.egkey, stream)
             self.streams[req.egkey] = stream
 

From f8575f962caf3fcddcf95d935d1d75a1cceb586b Mon Sep 17 00:00:00 2001
From: Jackson Hall <jacksonthall22@gmail.com>
Date: Sun, 2 Nov 2025 18:46:03 -0500
Subject: [PATCH 250/250] Add `Board.gives_checkmate()`

---
 chess/__init__.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/chess/__init__.py b/chess/__init__.py
index 84bfa632a..b51c31ca3 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -1980,6 +1980,17 @@ def gives_check(self, move: Move) -> bool:
         finally:
             self.pop()
 
+    def gives_checkmate(self, move: Move) -> bool:
+        """
+        Probes if the given move would put the opponent in checkmate. The move
+        must be at least pseudo-legal.
+        """
+        self.push(move)
+        try:
+            return self.is_checkmate()
+        finally:
+            self.pop()
+
     def is_into_check(self, move: Move) -> bool:
         king = self.king(self.turn)
         if king is None: