Individual Calculations September 2018
 Alexander, Roger  Total change: -45.20  Rating chartPersonal card
 64th Iowa Open Coralville, Iowa USA 2018-08-25
RcRownchangeKK*chgGame
 1670 1727 0.00 2 -1.13 40 -45.20 
  Tan, Ying 1835 USA0.001-0.3540-14.00 
  Pattrick, Earney 1504 USA0.001-0.7840-31.20 

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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