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Simplify probcut

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Passed STC:
LLR: 2.97 (-2.94,2.94) <-1.75,0.25>
Total: 80800 W: 20947 L: 20774 D: 39079
Ptnml(0-2): 217, 9446, 20906, 9609, 222
https://tests.stockfishchess.org/tests/view/680e83163629b02d74b15e2a

Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 359004 W: 91362 L: 91486 D: 176156
Ptnml(0-2): 177, 39133, 101007, 39007, 178
https://tests.stockfishchess.org/tests/view/680e95db3629b02d74b15e7a

closes https://github.com/official-stockfish/Stockfish/pull/6054

Bench: 2060860
This commit is contained in:
FauziAkram
2025-05-08 19:43:55 +03:00
committed by Disservin
parent 05e39527a8
commit 40ef7b1212
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@@ -952,7 +952,7 @@ Value Search::Worker::search(
moves_loop: // When in check, search starts here moves_loop: // When in check, search starts here
// Step 12. A small Probcut idea // Step 12. A small Probcut idea
probCutBeta = beta + 180 + depth * 20; probCutBeta = beta + 400;
if ((ttData.bound & BOUND_LOWER) && ttData.depth >= depth - 4 && ttData.value >= probCutBeta if ((ttData.bound & BOUND_LOWER) && ttData.depth >= depth - 4 && ttData.value >= probCutBeta
&& !is_decisive(beta) && is_valid(ttData.value) && !is_decisive(ttData.value)) && !is_decisive(beta) && is_valid(ttData.value) && !is_decisive(ttData.value))
return probCutBeta; return probCutBeta;