1. If the King or Rook have been moved.
2. If the King be in check.
3. If there be any Piece between the King and Rook.
4. If the King pass over any square attacked by one of the adversary’s Pieces or Pawns.
Should a player castle in any of the above cases, his adversary has the choice of three penalties; viz., 1st, of insisting that the move remain; 2d, of compelling him to move the King; 3d, of compelling him to move the Rook.
XVII.—If a player touch a Piece or Pawn that cannot be moved without leaving the King in check, he must replace the Piece or Pawn and move his King; but if the King cannot be moved, no penalty can be inflicted.
XVIII.—If a player attack the adverse King without saying “Check,” his adversary is not obliged to attend to it; but if the former, in playing his next move, were to say “Check,” each player must retract his last move, and he that is under check must obviate it.
XIX.—If the King has been in check for several moves, and it cannot be ascertained how it occurred, the player whose King is in check must retract his last move and free his King from the check; but if the moves made subsequent to the check be known, they must be retracted.
XX.—Should a player say “Check,” without giving it, and his adversary, in consequence, move his King, or touch a Piece or Pawn to interpose, he may retract such move, provided his adversary have not completed his last move.
XXI.—Every Pawn which has reached the eighth or last square of the chess-board, must be immediately exchanged for a Queen or any other Piece the player may think fit, even though all the Pieces remain on the board. It follows, therefore, that he may have two or more Queens, three or more Rooks, Bishops, or Knights.