1801. When a pawn is moved two squares, it is liable to be taken, en passant, by a pawn, but not by a piece.
1802. If you touch both king and rook, intending to castle, you must move one of the two pieces, at the option of your adversary; or he may compel you to complete the castling.
1803. You cannot take a piece and castle at the same time; nor does the rook check as it passes to its new position; but it may check on its position after castling.
1804. False castling is liable to the same penalties as a false move.
1805. When a player gives the odds of a rook, he does not relinquish the right of castling on the side from which the rook has been taken, all other conditions being lawful, as if the rook were in its place.