// Helper functions for doing and undoing moves
void do_capture_move(PieceType capture, Color them, Square to, bool ep);
void do_castle_move(Move m);
- void do_promotion_move(Move m);
void undo_castle_move(Move m);
- void undo_promotion_move(Move m);
- void undo_ep_move(Move m);
void find_checkers();
template<PieceType Piece>