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Chess engine: Stockfish 21112714 NNUE (Windows and Linux)

on


Stockfish - UCI chess engine, compiled by Michael Chaly
Rating CEDR=3375 (1 place)

Timestamp: 1638020866
Adjust usage of history in futility pruning

This patch refines 0ac8aca893dd2052f8433e0b4a3d65073266b00f that uses history heuristics in futility pruning. Now it adds main history of the move to in and also increases effect by factor of 2.

passed STC
https://tests.stockfishchess.org/tests/view/61a156829e83391467a2b2c9
LLR: 2.94 (-2.94,2.94) <0.00,2.50>
Total: 68464 W: 17920 L: 17587 D: 32957 Elo +1.69
Ptnml(0-2): 239, 7711, 18025, 7992, 265

passed LTC
https://tests.stockfishchess.org/tests/view/61a1bde99e83391467a2b305
LLR: 2.95 (-2.94,2.94) <0.50,3.00>
Total: 26088 W: 6926 L: 6674 D: 12488 Elo +3.36 💪
Ptnml(0-2): 18, 2619, 7531, 2845, 31
bench 6804653

Stockfish 21112714 NNUE download

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