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Chess engine: Stockfish 22020507 NNUE (Windows and Linux)

on


Stockfish - UCI chess engine, compiled by Michael Chaly
Rating CEDR=3577 (1 place)

Timestamp: 1644043110
Introduce movecount pruning for quiet check evasions in qsearch

Idea of this patch is that we usually don't consider quiet check evasions as "good" ones and prefer capture based ones instead. So it makes sense to think that if in qsearch 2 quiet check evasions failed to produce anything good 3rd and further ones wouldn't be good either.

passed STC
https://tests.stockfishchess.org/tests/view/61fc1b1ed508ec6a1c9f397c
LLR: 2.94 (-2.94,2.94) <0.00,2.50>
Total: 58800 W: 15947 L: 15626 D: 27227 Elo +1.90
Ptnml(0-2): 273, 6568, 15462, 6759, 338

passed LTC
https://tests.stockfishchess.org/tests/view/61fcc56dd508ec6a1c9f5619
LLR: 2.95 (-2.94,2.94) <0.50,3.00>
Total: 89544 W: 24208 L: 23810 D: 41526 Elo +1.54
Ptnml(0-2): 81, 9038, 26134, 9440, 79
closes https://github.com/official-stockfish/Stockfish/pull/3920
bench 4830082

Stockfish 22020507 NNUE download

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