Individual Calculations February 2023
 Toma, Katarzyna  Total change: -0.60  Rating chartPersonal card
 2022/23 4NCL Division 1 Rounds 3-4 Daventry ENG 2023-01-14
RcRownchangeKK*chgGame
 2025 2232 1.50 2 -0.03 20 -0.60 
  Shaw, Peter 2069 ENG1.0010.28205.60 
  Ledger, Stephen C 1980 ENG0.501-0.3120-6.20 

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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