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Fix bug affecting reversible status of pawn moves for threefold repetition detection - #421

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TheRealGioviok merged 2 commits into
official-clockwork:mainfrom
TheRealGioviok:fixreversible
Aug 5, 2026
Merged

Fix bug affecting reversible status of pawn moves for threefold repetition detection#421
TheRealGioviok merged 2 commits into
official-clockwork:mainfrom
TheRealGioviok:fixreversible

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@TheRealGioviok

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Slight speedup, nonfunctional otherwise. Thanks to @Ciekce for spotting this.

Test  | fixreversible
Elo   | 0.34 +- 1.56 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=16MB
LLR   | 3.00 (-2.94, 2.94) [-3.00, 0.00]
Games | N: 56760 W: 14923 L: 14867 D: 26970
Penta | [593, 6120, 14874, 6224, 569]

https://ob.cwchess.org/test/1548/

Bench: 13841007

@TheRealGioviok
TheRealGioviok merged commit 21df64e into official-clockwork:main Aug 5, 2026
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