X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fpawns.h;h=39fc9e3f16aa94c0acdebe3191448ca32178c0b4;hp=2c04e7d2eaa7ecf75fb09cc906446173232a613d;hb=3b92159908e7026683d5a6090b7a2d7fb41e97a5;hpb=c5ec94d0f1b128fc2c691c7231663a345409d5cc

diff --git a/src/pawns.h b/src/pawns.h
index 2c04e7d2..39fc9e3f 100644
--- a/src/pawns.h
+++ b/src/pawns.h
@@ -38,8 +38,10 @@ struct Entry {
   Bitboard pawn_attacks(Color c) const { return pawnAttacks[c]; }
   Bitboard passed_pawns(Color c) const { return passedPawns[c]; }
   int file_is_half_open(Color c, File f) const { return halfOpenFiles[c] & (1 << int(f)); }
-  int has_open_file_to_left(Color c, File f) const { return halfOpenFiles[c] & ((1 << int(f)) - 1); }
-  int has_open_file_to_right(Color c, File f) const { return halfOpenFiles[c] & ~((1 << int(f+1)) - 1); }
+  int pawns_on_same_color_squares(Color c, Square s) const { return pawnsOnSquares[c][!!(BlackSquares & s)]; }
+  int has_open_file_on_side(Color c, File f, bool left) const {
+    return halfOpenFiles[c] & (left ? ((1 << int(f)) - 1) : ~((1 << int(f+1)) - 1));
+  }
 
   template<Color Us>
   Score king_safety(const Position& pos, Square ksq)  {
@@ -63,6 +65,7 @@ struct Entry {
   Score value;
   int halfOpenFiles[COLOR_NB];
   Score kingSafety[COLOR_NB];
+  int pawnsOnSquares[COLOR_NB][COLOR_NB];
 };
 
 typedef HashTable<Entry, 16384> Table;