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Simplify use of low-ply history in evasions

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Passed Non-regression STC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 65024 W: 16991 L: 16804 D: 31229
Ptnml(0-2): 182, 7423, 17119, 7602, 186
https://tests.stockfishchess.org/tests/view/68c23f5459efc3c96b6113df

Passed Non-regression LTC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 207312 W: 53126 L: 53095 D: 101091
Ptnml(0-2): 126, 21986, 59389, 22041, 114
https://tests.stockfishchess.org/tests/view/68c241e359efc3c96b6113ef

closes https://github.com/official-stockfish/Stockfish/pull/6308

Bench: 2515619
This commit is contained in:
Shawn Xu
2025-09-28 21:21:57 +02:00
committed by Joost VandeVondele
parent c62e71e78f
commit 3073d82ccf
1 changed files with 1 additions and 1 deletions
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src/movepick.cpp
+1 -1
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@@ -188,7 +188,7 @@ ExtMove* MovePicker::score(MoveList<Type>& ml) {
{
m.value = (*mainHistory)[us][m.from_to()] + (*continuationHistory[0])[pc][to];
if (ply < LOW_PLY_HISTORY_SIZE)
m.value += 2 * (*lowPlyHistory)[ply][m.from_to()] / (1 + ply);
m.value += 2 * (*lowPlyHistory)[ply][m.from_to()];
}
}
}