Simplifies bestMoveChanges from LMR

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 5e022e664ca18266ee55c457b85a03d3f27481f4..28e16609203a7f8262d405ca9cabc6b3434dbf56 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1187,9 +1187,8 @@ moves_loop: // When in check, search starts here
               && !likelyFailLow)
               r -= 2;
 
-          // Increase reduction at non-PV nodes when the best move does not change frequently
-          if (  !PvNode
-              && thisThread->bestMoveChanges <= 2)
+          // Increase reduction at non-PV nodes
+          if (!PvNode)
               r++;
 
           // Decrease reduction if opponent's move count is high (~1 Elo)