Individual Calculations September 2009
 Cohen, Alon  Total change: 23.25  Rating chartPersonal card
 Jeruchess Intl 2009 Jerusalem ISR 2009-05-25
RcRownchangeKK*chgGame
 2167 2066 3.50 7 0.93 25 23.25 
  Zisman, Philip 2226 ISR0.5010.21255.25 
  Gukhvat, Peter 2208 ISR0.001-0.3125-7.75 
  Bronfman, Shmuel 2204 ISR0.5010.19254.75 
  Yosefashvilly, Michael 2145 ISR0.5010.11252.75 
  Aronin, Pavel 2091 MNC0.001-0.4725-11.75 
  Berenboym, Igor 2033 ISR1.0010.452511.25 
  Mordechai, Hanan 2263 ISR1.0010.752518.75 

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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