X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=a2ed91f8c9e1e8319926e1dbb534ac3ed336f090;hp=8eb0364844a363e5fb33e5a7e55a4d8e26dd739c;hb=de6fe2cb4e3cc1807ca59fb352b7226c458229bd;hpb=a66e6e5ad903218a612fdaaf027999b9d48a0294

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 8eb03648..a2ed91f8 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -161,12 +161,10 @@ namespace {
   #undef S
 
   const Score Tempo            = make_score(24, 11);
-  const Score RookOn7th        = make_score(11, 20);
   const Score RookOnPawn       = make_score(10, 28);
   const Score RookOpenFile     = make_score(43, 21);
   const Score RookSemiopenFile = make_score(19, 10);
   const Score BishopPawns      = make_score( 8, 12);
-  const Score KnightPawns      = make_score( 8,  4);
   const Score MinorBehindPawn  = make_score(16,  0);
   const Score UndefendedMinor  = make_score(25, 10);
   const Score TrappedRook      = make_score(90,  0);
@@ -349,10 +347,6 @@ namespace {
             if (Pt == BISHOP)
                 score -= BishopPawns * ei.pi->pawns_on_same_color_squares(Us, s);
 
-            // Penalty for knight when there are few enemy pawns
-            if (Pt == KNIGHT)
-                score -= KnightPawns * std::max(5 - pos.count<PAWN>(Them), 0);
-
             // Bishop and knight outposts squares
             if (!(pos.pieces(Them, PAWN) & pawn_attack_span(Us, s)))
                 score += evaluate_outposts<Pt, Us>(pos, ei, s);
@@ -365,11 +359,6 @@ namespace {
 
         if (Pt == ROOK)
         {
-            // Rook on 7th rank and enemy king trapped on 8th
-            if (   relative_rank(Us, s) == RANK_7
-                && relative_rank(Us, pos.king_square(Them)) == RANK_8)
-                score += RookOn7th;
-
             // Rook piece attacking enemy pawns on the same rank/file
             if (relative_rank(Us, s) >= RANK_5)
             {