Individual Calculations April 2009
 Sorgenfrei, Jens  Total change: -29.75  Rating chartPersonal card
 3.Prenzlberg Open Berlin GER 2008-12-27
RcRownchangeKK*chgGame
 1891 1802 0.00 3 -1.19 25 -29.75 
  Sondermann, Johannes c2148 GER0.001-0.1125-2.75 
  Fehrmann, Gregor 1992 GER0.001-0.2525-6.25 
  Mahler, Sonja 1534 GER0.001-0.8325-20.75 

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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