Chess engine: Stockfish 20040717

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Stockfish - UCI chess engine, compiled by Vizvezdenec
Rating JCER=3286
Timestamp: 1586274421

 Introduce capture history pruning
This patch introduces a heuristic that is similar to countermove based pruning but for captures - capture history pruning. The idea is that we can (almost) safely prune really late captures with negative history if they don't give check so will most likely not produce some king-attacking tactic.

 passed STC
https://tests.stockfishchess.org/tests/view/5e8c60d40ffd2be7f15e5470
LLR: 2.94 (-2.94,2.94) {-0.50,1.50}
Total: 23748 W: 4758 L: 4529 D: 14461 Elo +3.35
Ptnml(0-2): 421, 2712, 5400, 2899, 442

 passed LTC
https://tests.stockfishchess.org/tests/view/5e8c72bf0ffd2be7f15e547f
LLR: 2.96 (-2.94,2.94) {0.25,1.75}
Total: 17330 W: 2415 L: 2190 D: 12725 Elo +4.51
Ptnml(0-2): 126, 1561, 5107, 1704, 167
bench 4417023

Stockfish 20040717 download


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