You have been asked to direct a tournament set up by an organizer friend of yours. The organizer has specified a time control of 40/90, then SD/30, with an increment of 30 seconds per move to be in effect from move 1.
(This is hypothetical. It hasn’t happened to me yet. And I hope it never does.)
The organizer has told you that he is furnishing equipment – boards, pieces and clocks – for all games. The clock he is furnishing is the DGT North American.
Should the clocks be set to add 30 minutes after move 40 has been reached, or to add 30 minutes when the initial 90-minute control runs out?
Unlike the Rules Puzzle thread, there are no right or wrong answers – just opinions, backed up (I hope) by thoughtful analysis and full consideration of both the advantages and disadvantages of each possible answer.
Miscellaneous facts about the DGT North American clock:
- The clock can be set either way – to add 30 minutes after move 40, or to add 30 minutes only when the initial 90 minutes runs out.
- If the number of moves (40) is specified, the clock will add 30 minutes after move 40.
- If the number of moves is not specified (i.e. if it is set to 00), the clock will add 30 minutes when the initial 90 minutes runs out.
- This clock does not automatically display the move count while the game is in progress. The move count may be seen during the game by pressing the plus (+) button briefly without pausing the clock.
- If the clock is set with 40 moves specified, and if one player’s 90-minute initial time runs out before the move counter reaches 40, a flag will be displayed on the side of the player whose time ran out, and the time on both clock faces will freeze.
- If the clock is set without the number of moves specified (i.e. if it is set to 00), and one player’s 90-minute initial time runs out, a flag will be displayed only on the side of the player whose time ran out, and both clocks will continue to run, with 30 minutes added. If the opponent’s time also runs out later, no flag will be displayed on that side, and the clock will continue to run. (That way everybody will know whose time expired first.)
- If the game continues past move 40, and eventually one player’s secondary 30 minutes runs out, a flag will be displayed on the side of the player whose time ran out, and the time on both clock faces will freeze. This secondary behavior is true regardless of which way the clock was set to begin with.
If I have erred in any of the above descriptions of the DGT clock behavior, somebody please let me know.
Have at it!
Bill Smythe