Use capture history to better judge which sacrifices to explore #5200
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This idea has been bouncing around a while. @Vizvezdenec tried it a couple years ago in Stockfish without results, but its recent arrival in Ethereal inspired him and thence me to try it afresh in Stockfish. My thanks to fishtest contributors for letting me throw more than 5 tests as this. (Also factor out the now-common code with futpruning for captures.) STC: https://tests.stockfishchess.org/tests/view/662355bc3fe04ce4cefc18ac LLR: 2.92 (-2.94,2.94) <0.00,2.00> Total: 45760 W: 11970 L: 11640 D: 22150 Ptnml(0-2): 124, 5371, 11625, 5571, 189 LTC: https://tests.stockfishchess.org/tests/view/662dda396115ff6764c817c9 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 243828 W: 62042 L: 61287 D: 120499 Ptnml(0-2): 211, 27202, 66329, 27965, 207 bench 1480008
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clang-format 17 needs to be run on this PR. (execution 8871104331 / attempt 1) |
Disservin
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This idea has been bouncing around a while. @Vizvezdenec tried it a couple years ago in Stockfish without results, but its recent arrival in Ethereal inspired him and thence me to try it afresh in Stockfish.
My thanks to fishtest contributors for letting me throw more than 5 tests as this.
(Also factor out the now-common code with futpruning for captures.)
STC: https://tests.stockfishchess.org/tests/view/662355bc3fe04ce4cefc18ac
LLR: 2.92 (-2.94,2.94) <0.00,2.00>
Total: 45760 W: 11970 L: 11640 D: 22150
Ptnml(0-2): 124, 5371, 11625, 5571, 189
LTC: https://tests.stockfishchess.org/tests/view/662dda396115ff6764c817c9
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 243828 W: 62042 L: 61287 D: 120499
Ptnml(0-2): 211, 27202, 66329, 27965, 207
bench 1480008