X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fsearch.cpp;h=e976274f28fd4369dc8793b4782e80ef7e7cabc7;hb=6a6fc28551b84719868df99950584b878199d0c6;hp=b54ff19648d7adce0fd1b4f04f7c11afada68bbd;hpb=e0f42aa956e731b5faae0585f5cc47da23fbe53c;p=stockfish

diff --git a/src/search.cpp b/src/search.cpp
index b54ff196..e976274f 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1049,6 +1049,12 @@ moves_loop: // When in check, search starts from here
                && pos.pawn_passed(us, to_sq(move)))
           extension = 1;
 
+      // Last captures extension
+      else if (   PvNode
+               && PieceValue[EG][pos.captured_piece()] > PawnValueEg
+               && pos.non_pawn_material() <= 2 * RookValueMg)
+          extension = 1;
+
       // Castling extension
       if (type_of(move) == CASTLING)
           extension = 1;
@@ -1084,7 +1090,8 @@ moves_loop: // When in check, search starts from here
           && (  !captureOrPromotion
               || moveCountPruning
               || ss->staticEval + PieceValue[EG][pos.captured_piece()] <= alpha
-              || cutNode))
+              || cutNode
+              || thisThread->ttHitAverage < 384 * ttHitAverageResolution * ttHitAverageWindow / 1024))
       {
           Depth r = reduction(improving, depth, moveCount);