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update Null Move Pruning parameters

Browse source 
STC: https://tests.stockfishchess.org/tests/view/5f2dc38561e3b6af64881fec
LLR: 2.99 (-2.94,2.94) {-0.50,1.50}
Total: 6120 W: 903 L: 758 D: 4459
Ptnml(0-2): 44, 535, 1775, 644, 62

LTC: https://tests.stockfishchess.org/tests/view/5f2dd55f61e3b6af64882003
LLR: 2.95 (-2.94,2.94) {0.25,1.75}
Total: 7424 W: 577 L: 463 D: 6384
Ptnml(0-2): 16, 375, 2824, 473, 24

closes https://github.com/official-stockfish/Stockfish/pull/2942

bench 4107833
This commit is contained in:
Moez Jellouli 2020-08-08 12:35:34 +02:00 • committed by Joost VandeVondele
parent 450b60a303
commit 3368d03285
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@ -827,7 +827,7 @@ namespace {
&& (ss-1)->statScore < 23824
&& eval >= beta
&& eval >= ss->staticEval
&& ss->staticEval >= beta - 33 * depth - 33 * improving + 112 * ttPv + 311
&& ss->staticEval >= beta - 28 * depth - 28 * improving + 94 * ttPv + 200
&& !excludedMove
&& pos.non_pawn_material(us)
&& (ss->ply >= thisThread->nmpMinPly || us != thisThread->nmpColor))