diff --git a/src/search.cpp b/src/search.cpp index 60ee42aba..65f1a79a5 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -891,7 +891,7 @@ Value Search::Worker::search( improving |= ss->staticEval >= beta + 94; // Step 10. Internal iterative reductions - // For PV nodes without a ttMove as well as for deep enough cutNodes, we decrease depth. + // At sufficient depth, reduce depth for PV/Cut nodes without a TTMove. // (*Scaler) Especially if they make IIR less aggressive. if (!allNode && depth >= 6 && !ttData.move) depth--;