Individual Calculations September 2009
 Ben Porat, Zeev  Total change: 13.95  Rating chartPersonal card
 Spring Herzlia 2009 Herzlia ISR 2009-04-30
RcRownchangeKK*chgGame
 2050 1974 4.50 9 0.93 15 13.95 
  Towers, Brian 1859 ISR0.001-0.6615-9.90 
  Magen, Paz 2009 ISR0.5010.05150.75 
  Kinberg, Ofer 2091 ISR0.001-0.3415-5.10 
  Lavi, Idan 2121 ISR0.001-0.3015-4.50 
  Cnaan, Moshe 2125 ISR1.0010.701510.50 
  Lotsov Har-Zahav, Avraham 2045 ISR1.0010.60159.00 
  Chassid, Elan 2106 ISR0.5010.18152.70 
  Hadari, Ariel 2024 ISR0.5010.07151.05 
  Gunsherovich, Itay 2071 ISR1.0010.63159.45 

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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