Individual Calculations February 2024
 Sayer, Ray M  Total change: -86.80  Rating chartPersonal card
 31st 4NCL Congress Under 1700 Harrogate ENG 2024-01-19
RcRownchangeKK*chgGame
 1337 1686 0.50 3 -2.17 40 -86.80 
  Oliver, Peter J R 1317 ENG0.001-0.9040-36.00 
  Robinson, Steve 1340 ENG0.001-0.8940-35.60 
  Collins, Steve 1354 ENG0.501-0.3840-15.20 

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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