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reduce depth by 5 in probcut

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Passed simplification STC
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 63328 W: 16402 L: 16213 D: 30713
Ptnml(0-2): 174, 7378, 16340, 7629, 143
https://tests.stockfishchess.org/tests/view/6833530e6ec7634154f9be7f

Passed simplification LTC
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 69936 W: 17795 L: 17625 D: 34516
Ptnml(0-2): 29, 7631, 19474, 7809, 25
https://tests.stockfishchess.org/tests/view/68335e386ec7634154f9c266

closes https://github.com/official-stockfish/Stockfish/pull/6120

Bench: 2307268
This commit is contained in:
Daniel Monroe
2025-06-01 13:27:52 -07:00
committed by Joost VandeVondele
parent 254b6d5e85
commit 9ac756695e
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@@ -912,7 +912,7 @@ Value Search::Worker::search(
assert(probCutBeta < VALUE_INFINITE && probCutBeta > beta); assert(probCutBeta < VALUE_INFINITE && probCutBeta > beta);
MovePicker mp(pos, ttData.move, probCutBeta - ss->staticEval, &thisThread->captureHistory); MovePicker mp(pos, ttData.move, probCutBeta - ss->staticEval, &thisThread->captureHistory);
Depth probCutDepth = std::max(depth - (4 + cutNode), 0); Depth probCutDepth = std::max(depth - 5, 0);
while ((move = mp.next_move()) != Move::none()) while ((move = mp.next_move()) != Move::none())
{ {