Chess engine: Stockfish 22030820 NNUE for Windows and Linux

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March 11, 2022

Chess engine: Stockfish 22030820 NNUE for Windows and Linux

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

Timestamp: 1646767182

Decrease reductions in Lmr for some Pv nodes

This patch makes us reduce less in Lmr at pv nodes in case of static eval being far away from static evaluation of position. Idea is that if it's the case then probably position is pretty complex so we can't be sure about how reliable LMR is so we need to reduce less.

Passed STC:

https://tests.stockfishchess.org/tests/view/6226276aa9d47c8160e81220

LLR: 2.94 (-2.94,2.94) <0.00,2.50>

Total: 262696 W: 69944 L: 69239 D: 123513 Elo +0.93

Ptnml(0-2): 1399, 29702, 68436, 30417, 1394

Passed LTC:

https://tests.stockfishchess.org/tests/view/6226b002a9d47c8160e82b91

LLR: 2.95 (-2.94,2.94) <0.50,3.00>

Total: 64008 W: 17320 L: 16982 D: 29706 Elo +1.83

Ptnml(0-2): 60, 6378, 18811, 6674, 81

bench 6678390

Stockfish 22030820 NNUE download