constexpr Direction UpRight = (Us == WHITE ? NORTH_EAST : SOUTH_WEST);
constexpr Direction UpLeft = (Us == WHITE ? NORTH_WEST : SOUTH_EAST);
- const Bitboard emptySquares = Type == QUIETS || Type == QUIET_CHECKS ? target : ~pos.pieces();
- const Bitboard enemies = Type == EVASIONS ? pos.checkers()
- : Type == CAPTURES ? target : pos.pieces(Them);
+ const Bitboard emptySquares = ~pos.pieces();
+ const Bitboard enemies = Type == EVASIONS ? pos.checkers()
+ : pos.pieces(Them);
Bitboard pawnsOn7 = pos.pieces(Us, PAWN) & TRank7BB;
Bitboard pawnsNotOn7 = pos.pieces(Us, PAWN) & ~TRank7BB;