Individual Calculations May 2010
 Trejbal, Martin  Total change: -4.50  Rating chartPersonal card
 Krajsky prebor SSLK various CZE 2009-10-11
RcRownchangeKK*chgGame
 1909 1765 0.50 2 -0.18 25 -4.50 
  Prudek, Jiri 2080 CZE0.001-0.1425-3.50 
  Prazak, Jiri 1738 CZE0.501-0.0425-1.00 

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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