Individual Calculations December 2022
 Grumberg, Rotem  Total change: 30.80  Rating chartPersonal card
 youth league arzit merkaz sharon 4-5 israel ISR 2022-11-03
RcRownchangeKK*chgGame
 1508 1164 1.00 2 0.77 40 30.80 
  Ofir, Nevo 1517 ISR1.0010.894035.60 
  Levi, Yaniv 1499 ISR0.001-0.1240-4.80 

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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