Individual Calculations May 2023
 Omelchenko, Ivan  Total change: 18.20  Rating chartPersonal card
 Central London Chess Congress April 2023 - Open London ENG 2023-04-21
RcRownchangeKK*chgGame
 2109 1798 1.50 4 0.91 20 18.20 
  Villiers, Thomas c2160 ENG1.0010.902018.00 
  Lalic, Peter D c2145 ENG0.5010.39207.80 
  Hill, Alistair 2171 ENG0.001-0.1020-2.00 
  Safarian, Alek 1961 AUS0.001-0.2820-5.60 

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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