Raise penalty for knight attacked by pawn

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 8c5ecc36847ac88e5be0b7be3b19650fb853aa65..c880b7c7845f3c881ba2d7600a662c393e6a9436 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -61,11 +61,11 @@ namespace {
     // KingAttackWeights array.
     int kingAttackersWeight[COLOR_NB];
 
-    // kingAdjacentZoneAttacksCount[color] is the number of attacks to squares
-    // directly adjacent to the king of the given color. Pieces which attack
-    // more than one square are counted multiple times. For instance, if black's
-    // king is on g8 and there's a white knight on g5, this knight adds
-    // 2 to kingAdjacentZoneAttacksCount[BLACK].
+    // kingAdjacentZoneAttacksCount[color] is the number of attacks by the given
+    // color to squares directly adjacent to the enemy king. Pieces which attack
+    // more than one square are counted multiple times. For instance, if there is
+    // a white knight on g5 and black's king is on g8, this white knight adds 2
+    // to kingAdjacentZoneAttacksCount[WHITE].
     int kingAdjacentZoneAttacksCount[COLOR_NB];
 
     Bitboard pinnedPieces[COLOR_NB];
@@ -148,7 +148,7 @@ namespace {
   // ThreatenedByPawn[PieceType] contains a penalty according to which piece
   // type is attacked by an enemy pawn.
   const Score ThreatenedByPawn[] = {
-    S(0, 0), S(0, 0), S(87, 118), S(84, 122), S(114, 203), S(121, 217)
+    S(0, 0), S(0, 0), S(107, 138), S(84, 122), S(114, 203), S(121, 217)
   };
 
   // Assorted bonuses and penalties used by evaluation