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Set best value to futility value after pruned quiet move

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Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/6691592f5034141ae599c68d
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 278496 W: 71818 L: 71865 D: 134813
Ptnml(0-2): 865, 33311, 70978, 33194, 900

Passed non-regression LTC:
https://tests.stockfishchess.org/tests/view/66918fca5034141ae599e761
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 202986 W: 51048 L: 51013 D: 100925
Ptnml(0-2): 107, 22552, 56133, 22601, 100

closes https://github.com/official-stockfish/Stockfish/pull/5480

bench 1715206
This commit is contained in:
Linmiao Xu
2024-07-12 10:10:00 -04:00
committed by Joost VandeVondele
parent 930915de90
commit 558abdbe8a
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@@ -1035,7 +1035,7 @@ moves_loop: // When in check, search starts here
{
if (bestValue <= futilityValue && std::abs(bestValue) < VALUE_TB_WIN_IN_MAX_PLY
&& futilityValue < VALUE_TB_WIN_IN_MAX_PLY)
bestValue = (bestValue + futilityValue * 3) / 4;
bestValue = futilityValue;
continue;
}