Individual Calculations April 2009
 Williams, John R  Total change: 5.55  Rating chartPersonal card
 26th Annual U.S Amateur Team West Woodland Hills, CA USA 2009-02-14
RcRownchangeKK*chgGame
 2071 2116 1.50 2 0.37 15 5.55 
  Zaloznyy, Mike Y 2009 USA1.0010.35155.25 
  Naroditsky, Alan 2133 USA0.5010.02150.30 

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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