Castling is a magic move in Chess where 2 pieces, the King and the Rook ... Qh7! The Queen on h7 gives a Check, and it is protected by the Knight on g5 so the Black King cannot capture it.

Chess is often ... pawns do not hinder the Knight’s movement, when placed on light squares, that too f7 and g6 in particular, they restrict it’s path. The Eight Queen problem: Place 8 Queens ...