diff --git a/src/search.cpp b/src/search.cpp index 740ad71e..fbc1755b 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -1097,6 +1097,10 @@ moves_loop: // When in check, search starts here else if (ttValue >= beta) extension = -2 - !PvNode; + // If we are on a cutNode, reduce it based on depth (negative extension) (~1 Elo) + else if (cutNode) + extension = depth > 8 && depth < 17 ? -3 : -1; + // If the eval of ttMove is less than value, we reduce it (negative extension) (~1 Elo) else if (ttValue <= value) extension = -1;