Individual Calculations September 2013
 Waisberg, Arnold  Total change: 8.70  Rating chartPersonal card
 Gideon Japhet International Open B Jerusalem ISR 2013-08-04
RcRownchangeKK*chgGame
 1973 1962 2.50 4 0.58 15 8.70 
  Slonimskij, Arkadij 2177 RUS0.001-0.2315-3.45 
  Ritbo, Dan 1943 ISR1.0010.47157.05 
  Vinogradov, Victor 2106 ISR0.5010.19152.85 
  Emanuel, Yahav 1666 ISR1.0010.15152.25 

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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