To 'adjourn' means to suspend until a later stated time.
Law
In
law, 'adjournment' means to suspend proceedings to another time or place. (e.g. Counsel was not prepared for trial, so she requested an adjournment of the trial until a later date). It has a similar meaning in
parliamentary procedure. A
deliberative assembly adjourns when it is finished with business for the time being. If no time or method has been fixed to reconvene the assembly, adjournment has the effect of dissolving the body. A motion to adjourn is normally a
privileged motion, unless qualified in some way, (such as "Adjourn at 10PM.") or unless adjournment would dissolve the assembly, in which case it must be a
main motion. When privileged, the motion yields to a motion to
fix the time to which to adjourn, since that matter must be decided first.
Games
Some boardgames, like
Chess or
Go, use an 'adjournment' mechanism to suspend the game in progress so it can be continued at another time, typically the following day. The rationale is that games often extend in duration beyond what is reasonable for a single session of play.
Chess
In
chess, the practice of 'adjournment' is far less common today than it was a few decades ago, due to a trend towards shorter time controls and the advent of strong
chess computers.
Schedules allowing for adjournment usually fall into either of two categories:
★ 2 1/2 hours per player for the first forty moves, followed by adjournment (a five hour session)
★ 2 hours per player for the first forty moves, followed by 1 hour for the next twenty moves, followed by adjournment (a six hour session)
The rules for adjourning a game are as follows:
#Once the time control has passed, either player has the option of adjourning, and may do so on their move.
#If a player exercises that option, they lose as much time on their clock as there is until the end of that session.
#When the duration of the session has ended, it is imperative for the player with the move to adjourn the game.
#A player adjourns the game by recording their move secretly in an envelope and sealing it. Upon resumption, the arbiter makes the 'sealed move' and the game continues.
The first three rules are designed to encourage players to continue games until the end of the session, but no longer. The last rule, while seemingly bizarre, is the only way to adjourn a game fairly: the alternative of suspending a game in a position known to both players gives a big advantage to the player who has the move upon resumption, since they get to choose the best continuation after a thorough analysis. As such, the rule ensures that neither player knows upon adjournment what the position will be when it is next their turn to move. However it is generally considered advantageous to be the player to make the sealed move; especially if the move forces a specific response from the other player.
Considerations on when to adjourn a game can be complex, and often involve an extra dimension of psychology that is not part of the strictly logical struggle on the board. Analysis of 'adjourned positions' is an art in itself.
With the advent of strong chess playing computer programs, which could be use to analyze an adjourned positions, most tournaments have abandoned adjourning games in favor of shorter time controls. The first
World Chess Championship not to use adjournments was the
Classical World Chess Championship 1995,
[1] while the last one to use adjournments was the
FIDE World Chess Championship 1996.
Go
'Adjournments' are common in long matches of the game of
Go. Major Japanese title matches like the
Honinbo,
Kisei and
Meijin commonly have thinking time of over 8 hours per player. Such matches are played over 2 days and use a 'sealed move' during the adjournment. As in
Chess, a sealed move may have a forced response, giving an advantage to the sealing player. Sealing a move that has no purpose beside forcing a particular answer is considered poor
etiquette.
[2]
Other games
Other games that use 'adjournments' and 'sealed moves' are typically also strategic two player board games, such as
XiangQi or
Shogi.
References
1. 1995 Kasparov - Anand PCA Title Match Highlights, Mark Weeks' Chess Pages
2. Sealed Move Sensei's Library