- case KNIGHT:
- return ( pos.knight_attacks_square(from, to)
- && pos.move_is_legal(m)
- && !move_promotion(m) ? m : MOVE_NONE);
- break;
-
- case BISHOP:
- return ( pos.bishop_attacks_square(from, to)
- && pos.move_is_legal(m)
- && !move_promotion(m) ? m : MOVE_NONE);
- break;
-
- case ROOK:
- return ( pos.rook_attacks_square(from, to)
- && pos.move_is_legal(m)
- && !move_promotion(m) ? m : MOVE_NONE);
- break;
-
- case QUEEN:
- return ( pos.queen_attacks_square(from, to)
- && pos.move_is_legal(m)
- && !move_promotion(m) ? m : MOVE_NONE);
- break;
-
- case KING:
- return ( pos.king_attacks_square(from, to)
- && pos.move_is_legal(m)
- && !move_promotion(m) ? m : MOVE_NONE);
- break;
-
- default:
- assert(false);
- }
- assert(false);
- return MOVE_NONE;
+ // Luckly we can handle all the other pieces in one go
+ return ( pos.piece_attacks_square(from, to)
+ && pos.move_is_legal(m)
+ && !move_promotion(m) ? m : MOVE_NONE);