Bitboard b, weak, defended;
Score score = SCORE_ZERO;
- // Non-pawn enemies defended by a pawn and under our attack
+ // Non-pawn enemies defended by a pawn
defended = (pos.pieces(Them) ^ pos.pieces(Them, PAWN))
- & ei.attackedBy[Them][PAWN]
- & (ei.attackedBy[Us][KNIGHT] | ei.attackedBy[Us][BISHOP] | ei.attackedBy[Us][ROOK]);
+ & ei.attackedBy[Them][PAWN];
// Add a bonus according to the kind of attacking pieces
if (defended)
// If we have a specialized evaluation function for the current material
// configuration, call it and return.
if (ei.mi->specialized_eval_exists())
- return ei.mi->evaluate(pos) + Eval::Tempo;
+ return ei.mi->evaluate(pos);
// Probe the pawn hash table
ei.pi = Pawns::probe(pos, thisThread->pawnsTable);