Individual Calculations October 2017
 Gatica, Jose  Total change: 13.80  Rating chartPersonal card
 67th Annual Oregon Open Portland, Oregon USA 2017-09-02
RcRownchangeKK*chgGame
 1916 1992 2.50 3 0.69 20 13.80 
  Zhang, Gavin 1841 USA1.0010.30206.00 
  Colasurdo, James 1930 USA1.0010.41208.20 
  Bartron, Paul f1977 USA0.501-0.0220-0.40 

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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