Hourglass Timing

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    Keywords: Rules, Tournament

Definition

Hourglass Timing is the time system where

  • one gets an amount of time,
  • and time used for each move is deducted
  • and added to the opponent's time.

Diagram

 |===|-------|  time before
     |--|       time for one move
 |======|----|  time after

Remarks

Both players start with the same time on their clock.

Despite being simple, it invites unreasonable fast play to force the opponent to play as fast.


Example

10 minutes each.

   #      Time        Used
   --------------------------
   1  10:00  10:00  1:30
   2   8:30  11:30       1:40
   3  10:10   9:50  2:00
   4   8:10  11:50       0:20
   5   8:30  11:30  5:00
   6   3:30  16:30       0:30
   7   4:00  16:00  4:00
   8   0:00  20:00  lost

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This is a copy of the living page "Hourglass Timing" at Sensei's Library.
(OC) 2007 the Authors, published under the OpenContent License V1.0.
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