Individual Calculations May 2012
 Barenboim, Grigory  Total change: 3.90  Rating chartPersonal card
 Israel National League 2012 Various ISR 2011-12-16
RcRownchangeKK*chgGame
 2297 2201 1.00 2 0.26 15 3.90 
  Weisbuch, Udi 2304 ISR0.5010.14152.10 
  Ruderfer, Mark B 2290 RUS0.5010.12151.80 

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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