From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Sat, 17 Jul 2021 19:31:06 +0000 (+0200)
Subject: Merge official-stockfish/master
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=a38628ffe64c5849bde47bf38cc9339111b98f49;p=fairystockfish.git

Merge official-stockfish/master

bench: 4838140
---

a38628ffe64c5849bde47bf38cc9339111b98f49
diff --cc src/search.cpp
index c15a5a7,8f8d42c..69ab64f
--- a/src/search.cpp
+++ b/src/search.cpp
@@@ -1167,9 -1025,9 +1167,9 @@@ moves_loop: // When in check, search st
            else
            {
                // Continuation history based pruning (~20 Elo)
-               if (   lmrDepth < 4
+               if (   lmrDepth < 5
 -                  && (*contHist[0])[movedPiece][to_sq(move)] < CounterMovePruneThreshold
 -                  && (*contHist[1])[movedPiece][to_sq(move)] < CounterMovePruneThreshold)
 +                  && (*contHist[0])[history_slot(movedPiece)][to_sq(move)] < CounterMovePruneThreshold
 +                  && (*contHist[1])[history_slot(movedPiece)][to_sq(move)] < CounterMovePruneThreshold)
                    continue;
  
                // Futility pruning: parent node (~5 Elo)