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Scale child node futility pruning with previous move history.
Idea is to do more futility pruning if previous move has bad histories and less if it has good histories. passed STC https://tests.stockfishchess.org/tests/view/61e3757fbabab931824e0db7 LLR: 2.96 (-2.94,2.94) <0.00,2.50> Total: 156816 W: 42282 L: 41777 D: 72757 Ptnml(0-2): 737, 17775, 40913, 18212, 771 passed LTC https://tests.stockfishchess.org/tests/view/61e43496928632f7813a5535 LLR: 2.95 (-2.94,2.94) <0.50,3.00> Total: 349968 W: 94612 L: 93604 D: 161752 Ptnml(0-2): 300, 35934, 101550, 36858, 342 closes #3903 bench 4720954
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