Individual Calculations April 2019
 Gelfer, Israel  Total change: -9.40  Rating chartPersonal card
 Israel National Team Championship 2019 Round 9-10 Various ISR 2019-03-06
RcRownchangeKK*chgGame
 2347 2323 0.00 1 -0.47 20 -9.40 
  Botvinnik, Mikhail 2347 ISR0.001-0.4720-9.40 

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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