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Remove moveMalus

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Passed STC:
https://tests.stockfishchess.org/tests/view/656e0bb86980e15f69c763fa
LLR: 3.15 (-2.94,2.94) <-1.75,0.25>
Total: 123008 W: 30973 L: 30831 D: 61204
Ptnml(0-2): 368, 14032, 32568, 14162, 374

closes https://github.com/official-stockfish/Stockfish/pull/4905

No functional change
This commit is contained in:
Taras Vuk
2023-12-05 15:41:10 +01:00
committed by Disservin
parent dadff46986
commit 53ad6d23b0
1 changed files with 3 additions and 6 deletions
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9
src/search.cpp
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@@ -1699,18 +1699,15 @@ void update_all_stats(const Position& pos,
thisThread->pawnHistory[pawn_structure(pos)][moved_piece][to_sq(bestMove)] thisThread->pawnHistory[pawn_structure(pos)][moved_piece][to_sq(bestMove)]
<< quietMoveBonus; << quietMoveBonus;
int moveMalus = bestValue > beta + 168 ? quietMoveMalus // larger malus
: stat_malus(depth); // smaller malus
// Decrease stats for all non-best quiet moves // Decrease stats for all non-best quiet moves
for (int i = 0; i < quietCount; ++i) for (int i = 0; i < quietCount; ++i)
{ {
thisThread->pawnHistory[pawn_structure(pos)][pos.moved_piece(quietsSearched[i])] thisThread->pawnHistory[pawn_structure(pos)][pos.moved_piece(quietsSearched[i])]
[to_sq(quietsSearched[i])] [to_sq(quietsSearched[i])]
<< -moveMalus; << -quietMoveMalus;
thisThread->mainHistory[us][from_to(quietsSearched[i])] << -moveMalus; thisThread->mainHistory[us][from_to(quietsSearched[i])] << -quietMoveMalus;
update_continuation_histories(ss, pos.moved_piece(quietsSearched[i]), update_continuation_histories(ss, pos.moved_piece(quietsSearched[i]),
to_sq(quietsSearched[i]), -moveMalus); to_sq(quietsSearched[i]), -quietMoveMalus);
} }
} }
else else