Individual Calculations January 2012
 Katz, Alexander R  Total change: 15.75  Rating chartPersonal card
 42nd Annual National Chess Congress Philadelphia, Pennsylvania USA 2011-11-25
RcRownchangeKK*chgGame
 2453 2149 1.50 3 1.05 15 15.75 
  Krush, Irina mwg2476 USA1.0010.871513.05 
  Gerzhoy, Leonid m2490 CAN0.001-0.1215-1.80 
  Sarkar, Justin m2394 USA0.5010.30154.50 

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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