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Avoid recomputing moveCountPruning

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In search, when moveCountPruning becomes true, it can never turn false again.

Passed STC https://tests.stockfishchess.org/tests/view/652075ceac57711436728aac
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 136448 W: 34923 L: 34472 D: 67053
Ptnml(0-2): 420, 15094, 36767, 15501, 442

closes https://github.com/official-stockfish/Stockfish/pull/4823

Non functional change
This commit is contained in:
gabe 2023-10-06 22:59:22 +02:00 • committed by Joost VandeVondele
parent 25d444ed60
commit f7fbc6880e
1 changed files with 2 additions and 1 deletions
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3
src/search.cpp
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@ -984,7 +984,8 @@ moves_loop: // When in check, search starts here
&& bestValue > VALUE_TB_LOSS_IN_MAX_PLY)
{
// Skip quiet moves if movecount exceeds our FutilityMoveCount threshold (~8 Elo)
moveCountPruning = moveCount >= futility_move_count(improving, depth);
if (!moveCountPruning)
moveCountPruning = moveCount >= futility_move_count(improving, depth);
// Reduced depth of the next LMR search
int lmrDepth = newDepth - r;