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Simplify delta calculation in aspiration window

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Simplification STC: https://tests.stockfishchess.org/tests/view/6468cb200db5177f2b76ecbb
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 220416 W: 58503 L: 58487 D: 103426
Ptnml(0-2): 596, 24384, 60188, 24488, 552

Simplification LTC: https://tests.stockfishchess.org/tests/view/646a15840db5177f2b770704
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 177756 W: 47882 L: 47825 D: 82049
Ptnml(0-2): 55, 17430, 53858, 17473, 62

closes https://github.com/official-stockfish/Stockfish/pull/4581

Bench: 2304063
This commit is contained in:
Muzhen Gaming 2023-05-20 21:28:54 +08:00 • committed by Joost VandeVondele
parent d7e72d801f
commit b64c97825e
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@ -409,7 +409,7 @@ void Thread::search() {
else
break;
delta += delta / 4 + 2;
delta += delta / 3;
assert(alpha >= -VALUE_INFINITE && beta <= VALUE_INFINITE);
}