Individual Calculations January 2015
 Zafra Bono, Diego  Total change: -14.80  Rating chartPersonal card
 II Open Nacional de Silla Sub-12 Silla (EspaƱa) ESP 2014-12-20
RcRownchangeKK*chgGame
 1330 1471 1.00 2 -0.37 40 -14.80 
  Macias Pino, Diego 1271 ESP1.0010.24409.60 
  Garcia Molina, Jose 1389 ESP0.001-0.6140-24.40 

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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