X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=9c5c12b8b7003c62d31d66064f2840bf1355cece;hp=ca70f2d0a684529ab3b4b9c3bea9642f0f3883c4;hb=8863afeb84d28716cfb5907044bc4e2a00230d42;hpb=0d8a4c7565390c9f7ccc99799a76a19fb50e6f7b diff --git a/src/evaluate.cpp b/src/evaluate.cpp index ca70f2d0..9c5c12b8 100644 --- a/src/evaluate.cpp +++ b/src/evaluate.cpp @@ -119,8 +119,8 @@ namespace { { S(-17,-33), S(-11,-16), S(-5, 0), S( 1, 16), S( 7, 32), S(13, 48), // Rooks S( 18, 64), S( 22, 80), S(26, 96), S(29,109), S(31,115), S(33,119), S( 35,122), S( 36,123), S(37,124) }, - { S(-12,-20), S( -8,-13), S(-5, -7), S(-2, -1), S( 1, 5), S( 4, 11), // Queens - S( 7, 17), S( 10, 23), S(13, 29), S(16, 34), S(18, 38), S(20, 40), + { S(-12,-20), S( -8,-13), S(-5, -7), S( 0, 0), S( 6, 10), S(11, 19), // Queens + S( 13, 29), S( 18, 38), S(20, 40), S(21, 41), S(22, 41), S(22, 41), S( 22, 41), S( 23, 41), S(24, 41), S(25, 41), S(25, 41), S(25, 41), S( 25, 41), S( 25, 41), S(25, 41), S(25, 41), S(25, 41), S(25, 41), S( 25, 41), S( 25, 41), S(25, 41), S(25, 41) } @@ -171,6 +171,7 @@ namespace { const Score UndefendedMinor = make_score(25, 10); const Score TrappedRook = make_score(90, 0); const Score Unstoppable = make_score( 0, 20); + const Score LowMobPenalty = make_score(40, 20); // 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 @@ -186,6 +187,8 @@ namespace { (FileCBB | FileDBB | FileEBB | FileFBB) & (Rank7BB | Rank6BB | Rank5BB) }; + const Bitboard EdgeBB = Rank1BB | Rank8BB | FileABB | FileHBB; + // King danger constants and variables. The king danger scores are taken // from KingDanger[]. Various little "meta-bonuses" measuring the strength // of the enemy attack are added up into an integer, which is used as an @@ -213,7 +216,7 @@ namespace { template void init_eval_info(const Position& pos, EvalInfo& ei); - template + template Score evaluate_pieces(const Position& pos, EvalInfo& ei, Score* mobility); template @@ -317,8 +320,7 @@ Value do_evaluate(const Position& pos) { init_eval_info(pos, ei); // Evaluate pieces and mobility - score += evaluate_pieces(pos, ei, mobility) - - evaluate_pieces(pos, ei, mobility); + score += evaluate_pieces(pos, ei, mobility); score += apply_weight(mobility[WHITE] - mobility[BLACK], Weights[Mobility]); @@ -482,11 +484,19 @@ Value do_evaluate(const Position& pos) { ei.kingAdjacentZoneAttacksCount[Us] += popcount(bb); } + if (Pt == QUEEN) + b &= ~( ei.attackedBy[Them][KNIGHT] + | ei.attackedBy[Them][BISHOP] + | ei.attackedBy[Them][ROOK]); + int mob = Pt != QUEEN ? popcount(b & mobilityArea) : popcount(b & mobilityArea); mobility[Us] += MobilityBonus[Pt][mob]; + if (mob <= 1 && (EdgeBB & s)) + score -= LowMobPenalty; + // Decrease score if we are attacked by an enemy pawn. The remaining part // of threat evaluation must be done later when we have full attack info. if (ei.attackedBy[Them][PAWN] & s) @@ -566,28 +576,39 @@ Value do_evaluate(const Position& pos) { } - // evaluate_pieces() assigns bonuses and penalties to all the - // pieces of a given color. + // evaluate_pieces() assigns bonuses and penalties to all the pieces of both colors - template + template Score evaluate_pieces(const Position& pos, EvalInfo& ei, Score* mobility) { - const Color Them = (Us == WHITE ? BLACK : WHITE); - // 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, PAWN, KING)); + const Bitboard whiteMobilityArea = ~(ei.attackedBy[BLACK][PAWN] | pos.pieces(WHITE, PAWN, KING)); + const Bitboard blackMobilityArea = ~(ei.attackedBy[WHITE][PAWN] | pos.pieces(BLACK, PAWN, KING)); + + Score score; - Score score = evaluate_pieces(pos, ei, mobility, mobilityArea) - + evaluate_pieces(pos, ei, mobility, mobilityArea) - + evaluate_pieces(pos, ei, mobility, mobilityArea) - + evaluate_pieces(pos, ei, mobility, mobilityArea); + score = evaluate_pieces(pos, ei, mobility, whiteMobilityArea) + - evaluate_pieces(pos, ei, mobility, blackMobilityArea); + score += evaluate_pieces(pos, ei, mobility, whiteMobilityArea) + - evaluate_pieces(pos, ei, mobility, blackMobilityArea); + score += evaluate_pieces< ROOK, WHITE, Trace>(pos, ei, mobility, whiteMobilityArea) + - evaluate_pieces< ROOK, BLACK, Trace>(pos, ei, mobility, blackMobilityArea); + score += evaluate_pieces< QUEEN, WHITE, Trace>(pos, ei, mobility, whiteMobilityArea) + - evaluate_pieces< QUEEN, BLACK, Trace>(pos, ei, mobility, blackMobilityArea); // Sum up all attacked squares (updated in evaluate_pieces) - ei.attackedBy[Us][ALL_PIECES] = ei.attackedBy[Us][PAWN] | ei.attackedBy[Us][KNIGHT] - | ei.attackedBy[Us][BISHOP] | ei.attackedBy[Us][ROOK] - | ei.attackedBy[Us][QUEEN] | ei.attackedBy[Us][KING]; + ei.attackedBy[WHITE][ALL_PIECES] = ei.attackedBy[WHITE][PAWN] | ei.attackedBy[WHITE][KNIGHT] + | ei.attackedBy[WHITE][BISHOP] | ei.attackedBy[WHITE][ROOK] + | ei.attackedBy[WHITE][QUEEN] | ei.attackedBy[WHITE][KING]; + + ei.attackedBy[BLACK][ALL_PIECES] = ei.attackedBy[BLACK][PAWN] | ei.attackedBy[BLACK][KNIGHT] + | ei.attackedBy[BLACK][BISHOP] | ei.attackedBy[BLACK][ROOK] + | ei.attackedBy[BLACK][QUEEN] | ei.attackedBy[BLACK][KING]; if (Trace) - Tracing::terms[Us][Tracing::MOBILITY] = apply_weight(mobility[Us], Weights[Mobility]); + { + Tracing::terms[WHITE][Tracing::MOBILITY] = apply_weight(mobility[WHITE], Weights[Mobility]); + Tracing::terms[BLACK][Tracing::MOBILITY] = apply_weight(mobility[BLACK], Weights[Mobility]); + } return score; }