Individual Calculations April 2020
 Booysen, Tineke  Total change: -18.00  Rating chartPersonal card
 2020 Waterkloof Open Chess Tournament (Section B) Pretoria RSA 2020-02-29
RcRownchangeKK*chgGame
 1157 1332 1.00 2 -0.45 40 -18.00 
  Delport, Ben 1195 RSA0.001-0.6840-27.20 
  Coetsee, Dewald 1118 RSA1.0010.23409.20 

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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