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⚡ Optimize castling and en-passant moves Zobrist hashing #577

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merged 15 commits into from Jan 4, 2024
Merged

⚡ Optimize castling and en-passant moves Zobrist hashing #577

merged 15 commits into from Jan 4, 2024

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@eduherminio eduherminio commented Jan 3, 2024 •
edited

  • Optimize castling and en-passant moves Zobrist hasing
  • Better align struct

See benchmarks inside, 90% improvement in castling hashing operation, variable one in en-passant one

Elo   | -1.52 +- 4.09 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=32MB
LLR   | 0.29 (-2.25, 2.89) [-5.00, 0.00]
Games | N: 16736 W: 5040 L: 5113 D: 6583
Penta | [647, 1932, 3241, 1943, 605]
https://openbench.lynx-chess.com/test/62/

@eduherminio eduherminio changed the title ⚡ Optimize castling and en-passant moves Zobrist hasing ⚡ Optimize castling and en-passant moves Zobrist hashing Jan 4, 2024
@eduherminio eduherminio enabled auto-merge (squash) January 4, 2024 02:36
@eduherminio eduherminio merged commit adba5ff into main Jan 4, 2024
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@eduherminio eduherminio deleted the perf/zobrist-hash branch January 4, 2024 02:50
eduherminio added a commit that referenced this pull request Jan 8, 2024
@eduherminio
Revert "⚡ Optimize castling and en-passant moves Zobrist hashing (#577)"
36bc0b5 
This reverts commit adba5ff
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