FIDE Laws of Chess
The following shall be indicated upon the envelope:
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.
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 , and his remaining time shall so be recorded.
The arbiter shall check the accuracy of the information on the envelope
and is responsible for the safe-keeping of it.
the names of the players
the position immediately before the sealed move
the time used by each player
the name of the player who has sealed the move
the number of the sealed move
the offer of a draw, if the proposal is current.
the date, time and venue of resumption of play.
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
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.
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.
The envelope shall be opened only when the player who must reply to the
sealed move is present.
Except in the cases mentioned in Article 6.10 and 9.6, the game is lost
by a player whose recording of his sealed move
If, at the agreed resumption time
is ambiguous, or
is recorded such that its true significance is impossible to establish,
The player shall lose the game if he arrives at the chessboard more than
one hour late for the resumption of an adjourned game (unless the rules
of the competition or the arbiter decides otherwise).
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.
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.
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 the absent player'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 absent player's arrival.
the player who made the sealed move is the late player, the game is decided
the absent player has won the game by virtue of the fact that the sealed
move is checkmate, or
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
the player present at the chessboard has lost the game according to Article
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.
If the envelope containing the sealed move is missing, the game shall continue
from the position, with the clock times recorded at the time of adjournment.
If the time used by each player cannot be re-established the arbiter shall
set the clocks. The player who sealed the move makes the move he states
he sealed on the chessboard.
If it is impossible to re-establish the position, the game is annulled
and a new game must be played.
The duration of each resumption session shall be controlled by the arbiter's
timepiece. The starting time and finishing time shall be announced in advance.