X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fsearch.cpp;h=99c2b09f9ef42b4032c95864e7f4e0e497147ec5;hb=c0ff241464338f7e5bb815b4f72c2a95d12244a0;hp=1d84102303989cce47a9e3ea2615ec623d8fd159;hpb=b748b46714d5f8e0acca0a042ede1fc95e4f5190;p=stockfish

diff --git a/src/search.cpp b/src/search.cpp
index 1d841023..99c2b09f 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1185,7 +1185,8 @@ moves_loop: // When in check, search starts from here
               || ss->staticEval + PieceValue[EG][pos.captured_piece()] <= alpha
               || cutNode
               || (!PvNode && !formerPv && captureHistory[movedPiece][to_sq(move)][type_of(pos.captured_piece())] < 3678)
-              || thisThread->ttHitAverage < 432 * TtHitAverageResolution * TtHitAverageWindow / 1024))
+              || thisThread->ttHitAverage < 432 * TtHitAverageResolution * TtHitAverageWindow / 1024)
+          && (!PvNode || ss->ply > 1 || thisThread->id() % 4 != 3))
       {
           Depth r = reduction(improving, depth, moveCount);