throughout the game if you don't know what castling is castling is like a special move where there is this rook and the king is right here i don't know how to the king and if there's nothing in between they can sort of swap positions it's called castling uh it's a special move that you can do and it allows you to bring the king to the outside where the king is safe and to bring the rook to the inside where it can potentially cause a lot of damage so it's a very very favored move by a lot of players and no castling the rule change