X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=1a1334fe1e4e3f8858ba70f245c23a1b875f5851;hp=3481b03d7c77ad2a01622eb7abd1960ffab7ca4a;hb=e00bb13e8540058987ccfb8006f164acfd0acdcf;hpb=3e4dfb49a747be902d25ae06783f98ba29fb5030 diff --git a/src/evaluate.cpp b/src/evaluate.cpp index 3481b03d..1a1334fe 100644 --- 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. @@ -584,7 +587,7 @@ Value do_evaluate(const Position& pos, Value& margin) { // Penalty for bishop with same coloured pawns if (Piece == BISHOP) - score -= make_score(4, 4) * ei.pi->same_colored_pawn_count(s, Us); + score -= BishopPawnsPenalty * ei.pi->pawns_on_same_color_squares(Us, s); // Bishop and knight outposts squares if ( (Piece == BISHOP || Piece == KNIGHT) @@ -648,19 +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); } @@ -727,7 +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(pos, ei, mobility, mobilityArea); score += evaluate_pieces(pos, ei, mobility, mobilityArea);