top↑ Q23: Which rating is used when calculating the rating adjustment after the game is ended?
The higher of the two ratings — when the first move was made and when the last move was made in the game — is used when calculating the rating difference for the Elo formula. For example, if player A plays against player B and their ratings are 1300 for player A and 1400 for player B when the game is started, but just before the game ends their ratings are 1250 (player A) and 1450 (player B). The following ratings will be used: 1300 for player A (1300>1250) and 1450 for player B (1400<1450), when calculating the rating adjustment for this game. The only exception to this rule is if the player hadn't completed the first 5 rated games yet when the game was started, in which case the rating at the end of the game will be used for that player (everyone has a provisional rating of 1200 during the first 5 rated games). » More information about GameKnot's rating system.
