Give a small penalty for bishop for each pawn on the same colored square

[stockfish] / src / pawns.cpp

diff --git a/src/pawns.cpp b/src/pawns.cpp
index c1a93169bd7e394f3b3abffb1234a122864e479d..3d99bfc68645a3e327554eef3fc2e067755a1297 100644 (file)
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -176,6 +176,12 @@ namespace {
             value += CandidateBonus[relative_rank(Us, s)];
     }
 
+    e->pawnsOnWhiteSquaresCount[Us]   = popcount<Max15>(ourPawns   & WhiteSquares);
+    e->pawnsOnWhiteSquaresCount[Them] = popcount<Max15>(theirPawns & WhiteSquares);
+
+    e->pawnsOnBlackSquaresCount[Us]   = popcount<Max15>(ourPawns   & BlackSquares);
+    e->pawnsOnBlackSquaresCount[Them] = popcount<Max15>(theirPawns & BlackSquares); 
+
     return value;
   }
 }