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Less fail high cnt in the condition

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Passed STC:
https://tests.stockfishchess.org/tests/view/67e027538888403457d87535
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 164000 W: 42535 L: 42034 D: 79431
Ptnml(0-2): 478, 19228, 42113, 19677, 504

Passed LTC:
https://tests.stockfishchess.org/tests/view/67e3c21b8888403457d87808
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 139176 W: 35500 L: 34975 D: 68701
Ptnml(0-2): 54, 15038, 38898, 15525, 73

closes https://github.com/official-stockfish/Stockfish/pull/5960

Bench: 1921404
This commit is contained in:
Daniel Samek
2025-03-31 18:27:36 +02:00
committed by Disservin
parent 3d61f932cb
commit d942e13398
2 changed files with 2 additions and 1 deletions
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1
AUTHORS
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@@ -58,6 +58,7 @@ Daniel Axtens (daxtens)
Daniel Dugovic (ddugovic)
Daniel Monroe (Ergodice)
Dan Schmidt (dfannius)
DanSamek
Dariusz Orzechowski (dorzechowski)
David (dav1312)
David Zar

2
src/search.cpp
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@@ -1215,7 +1215,7 @@ moves_loop: // When in check, search starts here
r += 1171 + (depth < 8) * 985;
// Increase reduction if next ply has a lot of fail high
if ((ss + 1)->cutoffCnt > 3)
if ((ss + 1)->cutoffCnt > 2)
r += 1042 + allNode * 864;
// For first picked move (ttMove) reduce reduction