Use less reduction for escaping moves #1574
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This patch reuses the threatenedPieces variable (which is calculated in movepicker) to reduce less in the search tree the moves which escape a capture. passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 314352 W: 84042 L: 83328 D: 146982 Ptnml(0-2): 1105, 35084, 84207, 35552, 1228 https://tests.stockfishchess.org/tests/view/63355f37a004bed9a2e4a17f passed LTC: LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 90752 W: 24556 L: 24147 D: 42049 Ptnml(0-2): 59, 8855, 27123, 9296, 43 https://tests.stockfishchess.org/tests/view/63383a7735f43d649ff5fa8b closes official-stockfish#4181 bench: 4114228
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This patch reuses the threatenedPieces variable (which is calculated in movepicker) to reduce less in the search tree the moves which escape a capture.
passed STC:
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 314352 W: 84042 L: 83328 D: 146982
Ptnml(0-2): 1105, 35084, 84207, 35552, 1228
https://tests.stockfishchess.org/tests/view/63355f37a004bed9a2e4a17f
passed LTC:
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 90752 W: 24556 L: 24147 D: 42049
Ptnml(0-2): 59, 8855, 27123, 9296, 43
https://tests.stockfishchess.org/tests/view/63383a7735f43d649ff5fa8b
closes official-stockfish#4181
bench: 4114228