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Further simplify low ply history in evasions

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Passed Non-regression STC (vs #6308):
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 174208 W: 45414 L: 45343 D: 83451
Ptnml(0-2): 633, 20324, 45095, 20443, 609
https://tests.stockfishchess.org/tests/view/68c24be359efc3c96b611487

Passed Non-regression LTC (vs #6308):
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 110070 W: 28099 L: 27969 D: 54002
Ptnml(0-2): 56, 11919, 30962, 12035, 63
https://tests.stockfishchess.org/tests/view/68c4efa559efc3c96b611dfc

closes https://github.com/official-stockfish/Stockfish/pull/6321

Bench: 2151873
This commit is contained in:
Shawn Xu
2025-10-05 09:18:16 +02:00
committed by Joost VandeVondele
parent 3073d82ccf
commit 5895f47dab
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]; m.value = (*mainHistory)[us][m.from_to()] + (*continuationHistory[0])[pc][to];
if (ply < LOW_PLY_HISTORY_SIZE) if (ply < LOW_PLY_HISTORY_SIZE)
m.value += 2 * (*lowPlyHistory)[ply][m.from_to()]; m.value += (*lowPlyHistory)[ply][m.from_to()];
} }
} }
} }