Individual Calculations February 2015
 Yip, Carissa S  Total change: 1.20  Rating chartPersonal card
 2015 Portsmouth Open Portsmouth, New Hampshire USA 2015-01-17
 1860 1851 1.00 2 0.03 40 1.20 
  Cohen, Lawrence S 1920 USA0.001-0.4040-16.00 
  Henner, Peter 1800 USA1.0010.434017.20 

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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