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Simplify singularQuietLMR

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remove formerPV dependence

STC https://tests.stockfishchess.org/tests/view/5f4cb922ba100690c5cc5d35
LLR: 2.96 (-2.94,2.94) {-1.25,0.25}
Total: 113672 W: 12347 L: 12368 D: 88957
Ptnml(0-2): 566, 9537, 36699, 9420, 614

LTC https://tests.stockfishchess.org/tests/view/5f4e8474ba100690c5cc5e12
LLR: 2.93 (-2.94,2.94) {-0.75,0.25}
Total: 43032 W: 2298 L: 2227 D: 38507
Ptnml(0-2): 45, 1940, 17475, 2011, 45

closes https://github.com/official-stockfish/Stockfish/pull/3102

bench: 3290084
This commit is contained in:
Unai Corzo
2020-09-03 12:18:42 +02:00
committed by Joost VandeVondele
parent 0e1f734b05
commit d6530f7d49
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@@ -1196,7 +1196,7 @@ moves_loop: // When in check, search starts from here
// Decrease reduction if ttMove has been singularly extended (~3 Elo)
if (singularQuietLMR)
r -= 1 + formerPv;
r--;
if (!captureOrPromotion)
{