Individual Calculations May 2017
 Jameson, David  Total change: -13.60  Rating chartPersonal card
 2017 Welsh Championships Cardiff WLS 2017-04-14
RcRownchangeKK*chgGame
 2025 2098 3.50 7 -0.68 20 -13.60 
  Davis, Lee 1933 WLS1.0010.28205.60 
  Pleasants, Allan J 1982 WLS0.501-0.1620-3.20 
  Saunders, Walter N. R. 2030 WLS1.0010.41208.20 
  Kett, Tim 2220 WLS0.5010.17203.40 
  Heaven, Peter 2022 WLS0.501-0.1020-2.00 
  Young, Alan 2056 WLS0.001-0.5620-11.20 
  Taylor, Robert Graham 1932 WLS0.001-0.7220-14.40 

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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