More reduction for evading pawn moves.

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 67339ed78980501b38920d516fcb0dd03a0558ee..d96ed7daac5f4cc44bc579fc827aa5c158423762 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1186,7 +1186,7 @@ moves_loop: // When in check, search starts from here
               // hence break make_move(). (~2 Elo)
               else if (    type_of(move) == NORMAL
                        && !pos.see_ge(reverse_move(move)))
-                  r -= 2 + ttPv;
+                  r -= 2 + ttPv - (type_of(movedPiece) == PAWN);
 
               ss->statScore =  thisThread->mainHistory[us][from_to(move)]
                              + (*contHist[0])[movedPiece][to_sq(move)]