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Simplify Futility pruning formula

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Passed STC:
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 170112 W: 44266 L: 44193 D: 81653
Ptnml(0-2): 599, 20062, 43611, 20235, 549
https://tests.stockfishchess.org/tests/view/68f50b94637acd2a11e721ad

Passed LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 164658 W: 42393 L: 42318 D: 79947
Ptnml(0-2): 120, 18127, 45747, 18228, 107
https://tests.stockfishchess.org/tests/view/68fa6683637acd2a11e72ac3

closes https://github.com/official-stockfish/Stockfish/pull/6389

bench: 2351426
This commit is contained in:
FauziAkram
2025-11-01 11:39:00 +01:00
committed by Joost VandeVondele
parent cd7880c030
commit bc9f08731f
1 changed files with 0 additions and 1 deletions
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src/search.cpp
-1
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@@ -847,7 +847,6 @@ Value Search::Worker::search(
return futilityMult * d //
- 2094 * improving * futilityMult / 1024 //
- 1324 * opponentWorsening * futilityMult / 4096 //
+ (ss - 1)->statScore / 331 //
+ std::abs(correctionValue) / 158105;
};