Individual Calculations February 2015
 Brattain, Mika A  Total change: 15.60  Rating chartPersonal card
 2014 MWCC Holiday Swiss Natick, Massachusetts USA 2014-12-02
 2272 2328 2.50 3 0.78 20 15.60 
  Williams, Chris 2139 USA1.0010.25205.00 
  Foygel, Igor m2450 USA1.0010.672013.40 
  Martirosov, Vadim 2226 USA0.501-0.1420-2.80 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)


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