Individual Calculations November 2011
 Yedidia, Jonathan  Total change: -16.90  Rating chartPersonal card
 71st New England Open 201Leominster, Massachusetts USA 2011-09-03
RcRownchangeKK*chgGame
 2092 2385 0.00 2 -1.69 10 -16.90 
  Harris, David J 2083 USA0.001-0.8510-8.50 
  Xu, Grant Y 2101 USA0.001-0.8410-8.40 

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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