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Increase LMR move count limit by 3 if no tt hit. Bench: 3965745

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locutus2 committed Jun 8, 2019
1 parent e7033cd commit 1f88c4a72c82da29c40bb6076a5fb488cc1505aa
Showing with 1 addition and 1 deletion.
  1. +1 −1 src/search.cpp
@@ -1008,7 +1008,7 @@ namespace {
// Step 16. Reduced depth search (LMR). If the move fails high it will be
// re-searched at full depth.
if ( depth >= 3 * ONE_PLY
&& moveCount > 1 + 3 * rootNode + 2 * singularExtensionLMRmultiplier
&& moveCount > 1 + 3 * rootNode + 3 * !ttHit
&& ( !captureOrPromotion
|| moveCountPruning
|| ss->staticEval + PieceValue[EG][pos.captured_piece()] <= alpha))

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