X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=sidebyside;f=src%2Fevaluate.cpp;h=b380dbf074874717e93d5adfcfc6f3d80f54f2b3;hb=5d1644ba696c0a4d81450f922d216bf6479d4929;hp=c0e94cdacd4caf76b9a9c88f36dcd23aae8f2024;hpb=e1a7d135b2b1c6118ba514fa41c2104245bd1caf;p=stockfish diff --git a/src/evaluate.cpp b/src/evaluate.cpp index c0e94cda..b380dbf0 100644 --- a/src/evaluate.cpp +++ b/src/evaluate.cpp @@ -424,36 +424,20 @@ namespace { b2 = pos.attacks_from(ksq) & safe; // Enemy queen safe checks - b = (b1 | b2) & ei.attackedBy[Them][QUEEN]; - if (b) - { - attackUnits += QueenCheck * popcount(b); - score -= Checked; - } + if ((b1 | b2) & ei.attackedBy[Them][QUEEN]) + attackUnits += QueenCheck, score -= Checked; // Enemy rooks safe checks - b = b1 & ei.attackedBy[Them][ROOK]; - if (b) - { - attackUnits += RookCheck * popcount(b); - score -= Checked; - } + if (b1 & ei.attackedBy[Them][ROOK]) + attackUnits += RookCheck, score -= Checked; // Enemy bishops safe checks - b = b2 & ei.attackedBy[Them][BISHOP]; - if (b) - { - attackUnits += BishopCheck * popcount(b); - score -= Checked; - } + if (b2 & ei.attackedBy[Them][BISHOP]) + attackUnits += BishopCheck, score -= Checked; // Enemy knights safe checks - b = pos.attacks_from(ksq) & ei.attackedBy[Them][KNIGHT] & safe; - if (b) - { - attackUnits += KnightCheck * popcount(b); - score -= Checked; - } + if (pos.attacks_from(ksq) & ei.attackedBy[Them][KNIGHT] & safe) + attackUnits += KnightCheck, score -= Checked; // Finally, extract the king danger score from the KingDanger[] // array and subtract the score from the evaluation. @@ -467,7 +451,7 @@ namespace { } - // evaluate_threats() assigns bonuses according to the types of the attacking + // evaluate_threats() assigns bonuses according to the types of the attacking // and the attacked pieces. template @@ -679,12 +663,12 @@ namespace { // status of the players. Score evaluate_initiative(const Position& pos, int asymmetry, Value eg) { - int kingDistance = distance(pos.square(WHITE), pos.square(BLACK)) - - distance(pos.square(WHITE), pos.square(BLACK)); + int kingDistance = distance(pos.square(WHITE), pos.square(BLACK)) + - distance(pos.square(WHITE), pos.square(BLACK)); int pawns = pos.count(WHITE) + pos.count(BLACK); // Compute the initiative bonus for the attacking side - int initiative = 8 * (asymmetry + kingDistance) + 12 * pawns - 120; + int initiative = 8 * (asymmetry + kingDistance - 15) + 12 * pawns; // Now apply the bonus: note that we find the attacking side by extracting // the sign of the endgame value, and that we carefully cap the bonus so