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Times of different live chess games.

Bullet rating - For games under 3 minutes.

Blitz rating - For games of 3 minutes to 14 minutes.

Standard rating - For games 15 minutes and longer.

It took me a long time to find this on http://support.chess.com/Knowledgebase/Article/View/94/0/why-are-there-three-different-ratings-in-live-chess so I posted it here for quick reference. Note that the per-move bonus time IS significant here - not just the base minutes.  The system assumes an average game-length of 40 moves to estimate the total length of time available to each player; the result is what determines which rating is affected by a given time control: A time control of 2 | 12 therefore results in a Blitz (not Bullet) game like so:

2 minutes + (12 seconds x 40 moves = 480 seconds) = 10 minutes

(Exactly the same logic determines where a game appears on the time-line of the Seek graph.) As a reference, here are the basic pre-sets available in Live:

Time Control  Estimated Length  Game/rating type 
5 | 0 5 minutes Blitz
10 | 0 10 minutes Blitz
2 | 12 10 minutes Blitz
3 | 0 3 minutes Blitz
4 | 4 6.5 minutes Blitz
15 | 10 22 minutes Standard
1 | 5 4.5 minutes Blitz
1 | 0 1 minute Bullet

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