the time of adjournment shall be set up and the sealed move made on
the board.

If the position existing at the time of adjournment cannot be
ascertained the game shall be annulled.

If upon opening a sealed move the record cannot be interpreted as
expressing a legal move, the offending player may be required to
move his King, or, if the King cannot legally be moved, a piece
designated by his opponent. If the record can be interpreted as
expressing either of two moves, the offender shall make the one
selected by his opponent.


DRAWN GAMES.

A game is drawn--

(a) When the players agree to treat it as drawn.

(b) Upon the proof by either player that fifty moves have been
made on each side without a piece being captured.

(c) When either player claims a draw upon his turn to play, and
proves that the existing position has occurred at least twice
before during the game.

(d) When either player claims a draw and demonstrates that he can
subject the opposing King to an endless series of checks.