Remove Capture history pruning

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index d2ceee9fd1a15823bf6937e13873a3f626248bf3..988166df9bb1682a6094654853c7f7c5b77239c3 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1031,12 +1031,6 @@ moves_loop: // When in check, search starts here
           if (   captureOrPromotion
               || givesCheck)
           {
-              // Capture history based pruning when the move doesn't give check
-              if (   !givesCheck
-                  && lmrDepth < 1
-                  && captureHistory[movedPiece][to_sq(move)][type_of(pos.piece_on(to_sq(move)))] < 0)
-                  continue;
-
               // Futility pruning for captures
               if (   !pos.empty(to_sq(move))
                   && !givesCheck
@@ -1123,12 +1117,6 @@ moves_loop: // When in check, search starts here
               extension = -2;
       }
 
-      // Capture extensions for PvNodes and cutNodes
-      else if (   (PvNode || cutNode)
-               && captureOrPromotion
-               && moveCount != 1)
-          extension = 1;
-
       // Check extensions
       else if (   givesCheck
                && depth > 6