Merge some conditions

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 3d9a3112fdc47167297d512d346d1c9bb344c622..1a1334fe1e4e3f8858ba70f245c23a1b875f5851 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -156,12 +156,12 @@ namespace {
   const Score Tempo = make_score(24, 11);
 
   // Rooks and queens on the 7th rank
-  const Score RookOn7thBonus  = make_score(3, 20);
-  const Score QueenOn7thBonus = make_score(1,  8);
+  const Score RookOn7thBonus  = make_score(11, 20);
+  const Score QueenOn7thBonus = make_score( 3,  8);
 
   // Rooks and queens attacking pawns on the same rank
-  const Score RookOnPawnBonus  = make_score(3, 48);
-  const Score QueenOnPawnBonus = make_score(1, 40);
+  const Score RookOnPawnBonus  = make_score(10, 28);
+  const Score QueenOnPawnBonus = make_score( 4, 20);
 
   // Rooks on open files (modified by Joona Kiiski)
   const Score RookOpenFileBonus     = make_score(43, 21);
@@ -171,6 +171,9 @@ namespace {
   // right to castle.
   const Value TrappedRookPenalty = Value(180);
 
+  // Penalty for bishop with pawns on the same coloured squares
+  const Score BishopPawnsPenalty = make_score(8, 12);
+
   // Penalty for a bishop on a1/h1 (a8/h8 for black) which is trapped by
   // a friendly pawn on b2/g2 (b7/g7 for black). This can obviously only
   // happen in Chess960 games.
@@ -289,14 +292,6 @@ namespace Eval {
     Weights[KingDangerUs]   = weight_option("Cowardice", "Cowardice", WeightsInternal[KingDangerUs]);
     Weights[KingDangerThem] = weight_option("Aggressiveness", "Aggressiveness", WeightsInternal[KingDangerThem]);
 
-    // King safety is asymmetrical. Our king danger level is weighted by
-    // "Cowardice" UCI parameter, instead the opponent one by "Aggressiveness".
-    // If running in analysis mode, make sure we use symmetrical king safety. We
-    // do this by replacing both Weights[kingDangerUs] and Weights[kingDangerThem]
-    // by their average.
-    if (Options["UCI_AnalyseMode"])
-        Weights[KingDangerUs] = Weights[KingDangerThem] = (Weights[KingDangerUs] + Weights[KingDangerThem]) / 2;
-
     const int MaxSlope = 30;
     const int Peak = 1280;
 
@@ -590,6 +585,10 @@ Value do_evaluate(const Position& pos, Value& margin) {
                  && !more_than_one(BetweenBB[s][pos.king_square(Them)] & pos.pieces()))
                  score += BishopPinBonus;
 
+        // Penalty for bishop with same coloured pawns
+        if (Piece == BISHOP)
+            score -= BishopPawnsPenalty * ei.pi->pawns_on_same_color_squares(Us, s);
+
         // Bishop and knight outposts squares
         if (    (Piece == BISHOP || Piece == KNIGHT)
             && !(pos.pieces(Them, PAWN) & attack_span_mask(Us, s)))
@@ -652,19 +651,19 @@ Value do_evaluate(const Position& pos, Value& margin) {
 
             if (    file_of(ksq) >= FILE_E
                 &&  file_of(s) > file_of(ksq)
-                && (relative_rank(Us, ksq) == RANK_1 || rank_of(ksq) == rank_of(s)))
+                && (relative_rank(Us, ksq) == RANK_1 || rank_of(ksq) == rank_of(s))
+                && !ei.pi->has_open_file_to_right(Us, file_of(ksq)))
             {
                 // Is there a half-open file between the king and the edge of the board?
-                if (!ei.pi->has_open_file_to_right(Us, file_of(ksq)))
                     score -= make_score(pos.can_castle(Us) ? (TrappedRookPenalty - mob * 16) / 2
                                                            : (TrappedRookPenalty - mob * 16), 0);
             }
             else if (    file_of(ksq) <= FILE_D
                      &&  file_of(s) < file_of(ksq)
-                     && (relative_rank(Us, ksq) == RANK_1 || rank_of(ksq) == rank_of(s)))
+                     && (relative_rank(Us, ksq) == RANK_1 || rank_of(ksq) == rank_of(s))
+                     && !ei.pi->has_open_file_to_left(Us, file_of(ksq)))
             {
                 // Is there a half-open file between the king and the edge of the board?
-                if (!ei.pi->has_open_file_to_left(Us, file_of(ksq)))
                     score -= make_score(pos.can_castle(Us) ? (TrappedRookPenalty - mob * 16) / 2
                                                            : (TrappedRookPenalty - mob * 16), 0);
             }
@@ -731,7 +730,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
     Score score = mobility = SCORE_ZERO;
 
     // Do not include in mobility squares protected by enemy pawns or occupied by our pieces
-    const Bitboard mobilityArea = ~(ei.attackedBy[Them][PAWN] | pos.pieces(Us));
+    const Bitboard mobilityArea = ~(ei.attackedBy[Them][PAWN] | pos.pieces(Us, PAWN, KING));
 
     score += evaluate_pieces<KNIGHT, Us, Trace>(pos, ei, mobility, mobilityArea);
     score += evaluate_pieces<BISHOP, Us, Trace>(pos, ei, mobility, mobilityArea);