Do more futility pruning for parent nodes.

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 8be96e298ec17aa2936bb47c1150d79a02d518c2..4a9bd7de047cea9911d9b55a4702fab07145a95b 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1028,7 +1028,7 @@ moves_loop: // When in check, search starts from here
                   continue;
 
               // Futility pruning: parent node (~5 Elo)
-              if (   lmrDepth < 6
+              if (   lmrDepth < 8
                   && !ss->inCheck
                   && ss->staticEval + 284 + 188 * lmrDepth <= alpha
                   &&  (*contHist[0])[movedPiece][to_sq(move)]