Enquire within upon everything

viii. A player cannot castle under any of the following circumstances:--1. If he has moved either King or Rook. 2. If the King be in check. 3. If there be any piece between the King and the Rook. 4. If the King, in moving, pass over any square commanded by any one of his adversary's forces. [You cannot castle to get out of check.] ix. If a player give a check without crying "check," the adversary need not take notice of the check. But if two moves only are made before the discovery of the mistake, the pieces may be replaced, and the game properly played. x. If a player say check without actually attacking the King, and his adversary move his King or take the piece, the latter may elect either to let the move stand or have the pieces replaced and another move made. xi. If, at the end of a game, the players remain, one with a superior to an inferior force, or even if they have equal forces, the defending player may call upon his adversary to mate in fifty moves on each side, or draw the game. [If one player persist in giving perpetual check, or repeating the same move, his opponent may count the moves for the draw; in which case touching a piece if reckoned a move.] xii. Stalemate, or perpetual check is a drawn game. xiii. Directly a pawn reaches its eighth square it must be exchanged for a piece. [It is usual to change the pawn for a Queen, but it may be replaced by a Rook, Bishop, or Knight, without reference to the pieces already on the board. In practice it would be changed for a Queen or a Knight, seeing that the Queen's moves include those of the Rook and Bishop. Thus you may have two or more Queens, three or more Rooks, Bishops, or Knights on the board at the end of the game.]