X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=daa911e682fefaa4d2753e2077e4b0837261b58d;hp=945fb4e44299dafab044810ac09ae72d4e6c0142;hb=e005270fb6fb5a21ccfa91186181707882aef285;hpb=e95e69515a8e30bcdcef84bd37656c3ea3099cd5 diff --git a/src/evaluate.cpp b/src/evaluate.cpp index 945fb4e4..daa911e6 100644 --- a/src/evaluate.cpp +++ b/src/evaluate.cpp @@ -238,18 +238,18 @@ namespace { Score evaluate_pieces_of_color(const Position& pos, EvalInfo& ei, Score& mobility); template - Score evaluate_king(const Position& pos, EvalInfo& ei, Value margins[]); + Score evaluate_king(const Position& pos, const EvalInfo& ei, Value margins[]); template - Score evaluate_threats(const Position& pos, EvalInfo& ei); + Score evaluate_threats(const Position& pos, const EvalInfo& ei); template - Score evaluate_passed_pawns(const Position& pos, EvalInfo& ei); + Score evaluate_passed_pawns(const Position& pos, const EvalInfo& ei); template - int evaluate_space(const Position& pos, EvalInfo& ei); + int evaluate_space(const Position& pos, const EvalInfo& ei); - Score evaluate_unstoppable_pawns(const Position& pos, EvalInfo& ei); + Score evaluate_unstoppable_pawns(const Position& pos, const EvalInfo& ei); Value interpolate(const Score& v, Phase ph, ScaleFactor sf); Score apply_weight(Score v, Score w); @@ -372,7 +372,7 @@ Value do_evaluate(const Position& pos, Value& margin) { if (ei.mi->space_weight()) { int s = evaluate_space(pos, ei) - evaluate_space(pos, ei); - score += apply_weight(make_score(s * ei.mi->space_weight(), 0), Weights[Space]); + score += apply_weight(s * ei.mi->space_weight(), Weights[Space]); } // Scale winning side if position is more drawish that what it appears @@ -410,8 +410,8 @@ Value do_evaluate(const Position& pos, Value& margin) { Tracing::add(IMBALANCE, ei.mi->material_value()); Tracing::add(PAWN, ei.pi->pawns_value()); Tracing::add(UNSTOPPABLE, evaluate_unstoppable_pawns(pos, ei)); - Score w = make_score(ei.mi->space_weight() * evaluate_space(pos, ei), 0); - Score b = make_score(ei.mi->space_weight() * evaluate_space(pos, ei), 0); + Score w = ei.mi->space_weight() * evaluate_space(pos, ei); + Score b = ei.mi->space_weight() * evaluate_space(pos, ei); Tracing::add(SPACE, apply_weight(w, Weights[Space]), apply_weight(b, Weights[Space])); Tracing::add(TOTAL, score); Tracing::stream << "\nUncertainty margin: White: " << to_cp(margins[WHITE]) @@ -468,7 +468,7 @@ Value do_evaluate(const Position& pos, Value& margin) { if (bonus && (ei.attackedBy[Us][PAWN] & s)) { if ( !pos.pieces(Them, KNIGHT) - && !(same_color_squares(s) & pos.pieces(Them, BISHOP))) + && !(squares_of_color(s) & pos.pieces(Them, BISHOP))) bonus += bonus + bonus / 2; else bonus += bonus / 2; @@ -509,7 +509,9 @@ Value do_evaluate(const Position& pos, Value& margin) { ei.kingAdjacentZoneAttacksCount[Us] += popcount(bb); } - int mob = popcount(b & mobilityArea); + int mob = Piece != QUEEN ? popcount(b & mobilityArea) + : popcount(b & mobilityArea); + mobility += MobilityBonus[Piece][mob]; // Decrease score if we are attacked by an enemy pawn. Remaining part @@ -528,10 +530,17 @@ Value do_evaluate(const Position& pos, Value& margin) { if (Piece == BISHOP) score -= BishopPawns * 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))) - score += evaluate_outposts(pos, ei, s); + if (Piece == BISHOP || Piece == KNIGHT) + { + // Bishop and knight outposts squares + if (!(pos.pieces(Them, PAWN) & pawn_attack_span(Us, s))) + score += evaluate_outposts(pos, ei, s); + + // Pawn in front of knight/bishop + if ( relative_rank(Us, s) < RANK_5 + && (pos.pieces(PAWN) & (s + pawn_push(Us)))) + score += make_score(16, 0); + } if ( (Piece == ROOK || Piece == QUEEN) && relative_rank(Us, s) >= RANK_5) @@ -554,7 +563,7 @@ Value do_evaluate(const Position& pos, Value& margin) { if (ei.pi->semiopen(Us, file_of(s))) score += ei.pi->semiopen(Them, file_of(s)) ? RookOpenFile : RookSemiopenFile; - if (mob > 6 || ei.pi->semiopen(Us, file_of(s))) + if (mob > 3 || ei.pi->semiopen(Us, file_of(s))) continue; Square ksq = pos.king_square(Us); @@ -594,7 +603,7 @@ Value do_evaluate(const Position& pos, Value& margin) { // and the type of attacked one. template - Score evaluate_threats(const Position& pos, EvalInfo& ei) { + Score evaluate_threats(const Position& pos, const EvalInfo& ei) { const Color Them = (Us == WHITE ? BLACK : WHITE); @@ -665,7 +674,7 @@ Value do_evaluate(const Position& pos, Value& margin) { // evaluate_king<>() assigns bonuses and penalties to a king of a given color template - Score evaluate_king(const Position& pos, EvalInfo& ei, Value margins[]) { + Score evaluate_king(const Position& pos, const EvalInfo& ei, Value margins[]) { const Color Them = (Us == WHITE ? BLACK : WHITE); @@ -778,7 +787,7 @@ Value do_evaluate(const Position& pos, Value& margin) { // evaluate_passed_pawns<>() evaluates the passed pawns of the given color template - Score evaluate_passed_pawns(const Position& pos, EvalInfo& ei) { + Score evaluate_passed_pawns(const Position& pos, const EvalInfo& ei) { const Color Them = (Us == WHITE ? BLACK : WHITE); @@ -821,7 +830,8 @@ Value do_evaluate(const Position& pos, Value& margin) { // If there is an enemy rook or queen attacking the pawn from behind, // add all X-ray attacks by the rook or queen. Otherwise consider only // the squares in the pawn's path attacked or occupied by the enemy. - if (forward_bb(Them, s) & pos.pieces(Them, ROOK, QUEEN) & pos.attacks_from(s)) + if ( unlikely(forward_bb(Them, s) & pos.pieces(Them, ROOK, QUEEN)) + && (forward_bb(Them, s) & pos.pieces(Them, ROOK, QUEEN) & pos.attacks_from(s))) unsafeSquares = squaresToQueen; else unsafeSquares = squaresToQueen & (ei.attackedBy[Them][ALL_PIECES] | pos.pieces(Them)); @@ -879,7 +889,7 @@ Value do_evaluate(const Position& pos, Value& margin) { // evaluate_unstoppable_pawns() evaluates the unstoppable passed pawns for both sides, this is quite // conservative and returns a winning score only when we are very sure that the pawn is winning. - Score evaluate_unstoppable_pawns(const Position& pos, EvalInfo& ei) { + Score evaluate_unstoppable_pawns(const Position& pos, const EvalInfo& ei) { Bitboard b, b2, blockers, supporters, queeningPath, candidates; Square s, blockSq, queeningSquare; @@ -989,7 +999,7 @@ Value do_evaluate(const Position& pos, Value& margin) { // black pawns: a4, b4 white: b2 then pawn in b4 is giving support. if (!opposed) { - b2 = supporters & in_front_bb(winnerSide, blockSq + pawn_push(winnerSide)); + b2 = supporters & in_front_bb(winnerSide, rank_of(blockSq + pawn_push(winnerSide))); while (b2) // This while-loop could be replaced with LSB/MSB (depending on color) { @@ -999,7 +1009,7 @@ Value do_evaluate(const Position& pos, Value& margin) { } // Check pawns that can be sacrificed against the blocking pawn - b2 = attack_span_mask(winnerSide, blockSq) & candidates & ~(1ULL << s); + b2 = pawn_attack_span(winnerSide, blockSq) & candidates & ~(1ULL << s); while (b2) // This while-loop could be replaced with LSB/MSB (depending on color) { @@ -1044,7 +1054,7 @@ Value do_evaluate(const Position& pos, Value& margin) { // twice. Finally, the space bonus is scaled by a weight taken from the // material hash table. The aim is to improve play on game opening. template - int evaluate_space(const Position& pos, EvalInfo& ei) { + int evaluate_space(const Position& pos, const EvalInfo& ei) { const Color Them = (Us == WHITE ? BLACK : WHITE); @@ -1080,7 +1090,7 @@ Value do_evaluate(const Position& pos, Value& margin) { int ev = (eg_value(v) * int(sf)) / SCALE_FACTOR_NORMAL; int result = (mg_value(v) * int(ph) + ev * int(128 - ph)) / 128; - return Value((result + GrainSize / 2) & ~(GrainSize - 1)); + return Value((result / GrainSize) * GrainSize); // Sign independent } // apply_weight() weights score v by score w trying to prevent overflow @@ -1137,11 +1147,9 @@ Value do_evaluate(const Position& pos, Value& margin) { std::string Tracing::do_trace(const Position& pos) { - Search::RootColor = pos.side_to_move(); - stream.str(""); stream << std::showpoint << std::showpos << std::fixed << std::setprecision(2); - memset(scores, 0, 2 * (TOTAL + 1) * sizeof(Score)); + std::memset(scores, 0, 2 * (TOTAL + 1) * sizeof(Score)); Value margin; do_evaluate(pos, margin);