diff --git a/src/search.cpp b/src/search.cpp index 743f4bce7..6503cc14d 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -1219,9 +1219,7 @@ moves_loop: // When in check, search starts here // beyond the first move depth. // To prevent problems when the max value is less than the min value, // std::clamp has been replaced by a more robust implementation. - Depth d = std::max(1, std::min(newDepth - r / 1024, - newDepth + !allNode + (PvNode && !bestMove))) - + PvNode; + Depth d = std::max(1, std::min(newDepth - r / 1024, newDepth + 1 + PvNode)) + PvNode; ss->reduction = newDepth - d; value = -search(pos, ss + 1, -(alpha + 1), -alpha, d, true);