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Simplify Corrhist Bonus

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Passed Non-regression STC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 187776 W: 48687 L: 48631 D: 90458
Ptnml(0-2): 570, 22327, 48090, 22279, 622
https://tests.stockfishchess.org/tests/view/68f58019637acd2a11e72233

Passed Non-regression LTC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 159378 W: 41027 L: 40946 D: 77405
Ptnml(0-2): 122, 17645, 44078, 17718, 126
https://tests.stockfishchess.org/tests/view/68fe7492637acd2a11e73090

closes https://github.com/official-stockfish/Stockfish/pull/6385

Bench: 2458738
This commit is contained in:
Shawn Xu
2025-11-01 11:36:33 +01:00
committed by Joost VandeVondele
parent e9674a7888
commit cd7880c030
1 changed files with 1 additions and 2 deletions
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src/search.cpp
+1 -2
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@@ -1451,8 +1451,7 @@ moves_loop: // When in check, search starts here
auto bonus =
std::clamp(int(bestValue - ss->staticEval) * depth / (8 + (bestValue > ss->staticEval)),
-CORRECTION_HISTORY_LIMIT / 4, CORRECTION_HISTORY_LIMIT / 4);
update_correction_history(pos, ss, *this,
(1088 - 180 * (bestValue > ss->staticEval)) * bonus / 1024);
update_correction_history(pos, ss, *this, bonus);
}
assert(bestValue > -VALUE_INFINITE && bestValue < VALUE_INFINITE);