Chess engine: Stockfish 23012506 NNUE for Windows and Linux (+1.66)
Rating CEDR=3748
Timestamp: 1674629479
Rebalance usage of history heuristics in pruning
This patch has multiple effects:
* history heuristics sum in futility pruning now can't exceed some negative value so futility pruning for moves with negative histories should become slightly less aggressive;
* history heuristics are now used in SEE pruning for quiet moves;
Passed STC:
https://tests.stockfishchess.org/tests/view/63cde339c93e8828d0f02e3a
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 88424 W: 23681 L: 23303 D: 41440 Elo +1.49
Ptnml(0-2): 258, 9559, 24219, 9899, 277
Passed LTC:
https://tests.stockfishchess.org/tests/view/63ce9009c93e8828d0f04e4f
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 79536 W: 21223 L: 20843 D: 37470 Elo +1.66
Ptnml(0-2): 22, 7599, 24146, 7979, 22
closes https://github.com/official-stockfish/Stockfish/pull/4355
Bench: 4208265
Download:
Windows x64 for Haswell CPUs
Windows x64 for modern computers + AVX2
Windows x64 for modern computers
Windows x64 + SSSE3
Windows x64
Linux x64 for Haswell CPUs
Linux x64 for modern computers + AVX2
Linux x64 for modern computers
Linux x64 + SSSE3
Linux x64
Windows x64 for modern computers + AVX2
Windows x64 for modern computers
Windows x64 + SSSE3
Windows x64
Linux x64 for Haswell CPUs
Linux x64 for modern computers + AVX2
Linux x64 for modern computers
Linux x64 + SSSE3
Linux x64
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