Remove a redundant check in passed pawn eval

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index c8ccaf9c8312d0a3c062ee294a7e519153ef70a3..7fd0db57dc668c37b330c77a51d4561957509f36 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -207,7 +207,6 @@ namespace {
 
   // Bonuses for enemy's safe checks
   const int QueenContactCheckBonus = 3;
-  const int DiscoveredCheckBonus   = 3;
   const int QueenCheckBonus        = 2;
   const int RookCheckBonus         = 1;
   const int BishopCheckBonus       = 1;
@@ -862,8 +861,7 @@ namespace {
         // value if the other side has a rook or queen.
         if (square_file(s) == FILE_A || square_file(s) == FILE_H)
         {
-            if (   pos.non_pawn_material(Them) <= KnightValueMidgame
-                && pos.piece_count(Them, KNIGHT) <= 1)
+            if (pos.non_pawn_material(Them) <= KnightValueMidgame)
                 ebonus += ebonus / 4;
             else if (pos.pieces(ROOK, QUEEN, Them))
                 ebonus -= ebonus / 4;