Individual Calculations July 2012
 Kelleher, William  Total change: -2.90  Rating chartPersonal card
 81st Massachusetts Open Marlboro, Massachusetts USA 2012-05-26
RcRownchangeKK*chgGame
 2231 2311 1.50 3 -0.29 10 -2.90 
  Smirnov, William J 2017 USA1.0010.15101.50 
  Ivanov, Alexander g2526 USA0.001-0.2310-2.30 
  Schoonmaker, Nicholas c2150 USA0.501-0.2110-2.10 

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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