- one gets an amount of time (say, 5 minutes),
- time used for each move is deducted,
- and an extra amount of time (say, 15 seconds) is added after each move.
- Or is it before each move, as wikipedia would have it? See discussion.
Players' remaining time
- grows as long as they use less than the post-move increment
- and declines when they use more -- on average.
- is always at least the incremental amount for each move
The Players' overall time limit is linearly dependent on the number of moves (e.g. you can tell that a 300 move game with 30 min + 30 sec/move will last for a maximum of 210 min).
There is no spilling of unused time.
There are no periods. All you have to watch is the time.
5 minutes plus 30 seconds bonus.
# Time Used ------------------ 1 5:00 1:00 2 4:30 1:20 3 3:40 2:40 4 1:30 0:10 5 1:50 0:20 6 2:00 0:30 7 2:00 2:00 8 0:00 lost
If it were only one second less in step 7, life would continue with 0:31 on the clock.
Fisher timing and EGF tournament class
For Fischer timing the calculation is:
Basic time (in minutes) + 120 x bonus times (in minutes)
Or what is simpler to calculate:
Basic time (in minutes) + 2 x bonus times (in seconds)
At the moment the minimum requirements for fisher timing are:
- Class A: minimum Basis Time 45 minutes, minimum Adjusted time 75 minutes (e.g.: 45 minutes + 15 sec per move)
- Class B: minimum Basis Time 30 minutes, minimum Adjusted time 50 minutes (e.g.: 30 minutes + 10 sec per move)
- Class C: minimum Basis Time 20 minutes, minimum Adjusted time 30 minutes (e.g.: 20 minutes + 5 sec per move)
See also: http://europeangodatabase.eu/EGD/EGF_rating_system.php under Tournament classes
Example tournaments where Fischer timing was used:
- Princeton-Rutgers 1st inter-collegiate match, (April 2009 | AGA E-Journal, Volume 10, #14)
- 30 min reserve and 15 seconds per move