A1. (a) If a game is not finished at the end of the time prescribed for play, the arbiter shall require the player having the move to 'seal' that move. The player must write his move in unambiguous notation on his scoresheet, put his scoresheet and that of his opponent in an envelope, seal the envelope and only then stop his clock without starting the opponent's clock. Until he has stopped the clocks, the player retains the right to change his sealed move. If, after being told by the arbiter to seal his move, the player makes a move on the chessboard, he must write that same move on his scoresheet as his sealed move.

(b) A player having the move, who adjourns the game before the end of the playing session, shall be considered to have sealed at the nominal time for the end of the session.

A2. The following shall be indicated upon the envelope:

(a) the names of the players

(b) the position immediately before the sealed move

(c) the time used by each player

(d) the name of the player who has sealed the move

(e) the number of the sealed move

(f) the offer of a draw, if the proposal was made before the adjournment of the game

(g) the date, time and venue of resumption of play.

A3. The arbiter shall check the accuracy of the information on the envelope and is responsible for the safe-keeping of it.

A4. If a player proposes a draw after his opponent has sealed his move, the offer is valid until the opponent has accepted it or rejected it as in Article 9.1.

A5. Before the game is to be resumed, the position immediately before the sealed move shall be set up on the chessboard, and the times used by each player when the game was adjourned shall be indicated on the clocks.

A6. If prior to the resumption the game is agreed drawn, or if one of the players notifies the arbiter that he resigns, the game is concluded.

A7. The envelope shall be opened only when the player who must reply to the sealed move is present.

A8. Except in the cases mentioned in Article 6.9 and 9.6, the game is lost by a player whose recording of his sealed move

(a) is ambiguous, or

(b) is false, in such a way that its true significance is impossible to establish, or

(c) is illegal.

A9. If, at the agreed resumption time

(a) the player having to reply to the sealed move is present, the envelope is opened, the sealed move made on the chessboard and his clock started.

(b) the player having to reply to the sealed move is not present, his clock shall be started. On his arrival, he may stop his clock and summon the arbiter. The envelope is then opened and the sealed move made on the chessboard. His clock is then restarted.

(c) the player who sealed the move is not present, his opponent has the right to record his reply on the scoresheet, seal his scoresheet in a fresh envelope, stop his clock and start his opponent's clock instead of making his reply in the normal manner. If so, the envelope shall be handed to the arbiter for safe-keeping and opened on the opponent's arrival.

A10. The game is lost by the player who arrives more than one hour late for the resumption of an adjourned game. However, if the player who made the sealed move is the late player, the game is decided otherwise, if:

(a) the absent player has won the game by virtue of the fact that the sealed move is checkmate, or

(b) the absent player has produced a drawn game by virtue of the fact that the sealed move is stalemate, or a position as described in Article 9.6 has arisen on the chessboard, or

(c) the player present at the chessboard has lost the game according to Article 6.9.

A11. (a) If the envelope containing the sealed move is missing, the game shall continue from the adjourned position, with the clock times recorded at the time of adjournment. If the time used by each player cannot be re-established the clocks shall be set by the arbiter. The player who sealed the move makes the move he states he sealed on the chessboard.

(b) If it is impossible to re-establish the position, the game is annulled and a new game must be played.

A12. If, upon resumption of the game, either player points out before making his first move, that the time used has been incorrectly indicated on either clock, the error must be corrected. If the error is not then established the game continues without correction unless the arbiter feels that the consequences will be too severe.

A13. The duration of each resumption session shall be controlled by the arbiter's time piece. The starting time and finishing time shall be announced in advance.