/// pieces, according to the call parameters. Pinned pieces protect our king and
/// discovered check pieces attack the enemy king.
-Bitboard Position::hidden_checkers(Square ksq, Color c, Color toMove) const {
+Bitboard Position::hidden_checkers(Color c, Color kingColor) const {
Bitboard b, pinners, result = 0;
+ Square ksq = king_square(kingColor);
// Pinners are sliders that give check when a pinned piece is removed
pinners = ( (pieces( ROOK, QUEEN) & PseudoAttacks[ROOK ][ksq])
- | (pieces(BISHOP, QUEEN) & PseudoAttacks[BISHOP][ksq])) & pieces(c);
+ | (pieces(BISHOP, QUEEN) & PseudoAttacks[BISHOP][ksq])) & pieces(~kingColor);
while (pinners)
{
b = between_bb(ksq, pop_lsb(&pinners)) & pieces();
if (!more_than_one(b))
- result |= b & pieces(toMove);
+ result |= b & pieces(c);
}
return result;
}