Individual Calculations April 2009
 Roman Alvarez, Oscar  Total change: -12.15  Rating chartPersonal card
 COPA INTERCLUBES ENDESA-FUNDACION CHILENA DE AJEDREZ 2007 Santiago CHI 2007-10-16
RcRownchangeKK*chgGame
 2137 2094 1.00 4 -0.81 15 -12.15 
  Diaz Villagran, Robert 2319 CHI0.001-0.2215-3.30 
  Racagni Valdes, Renato 1961 CHI1.0010.32154.80 
  Velasquez Ojeda, Cesar f2282 CHI0.001-0.2615-3.90 
  Letelier Garcia, Francisco 1985 CHI0.001-0.6515-9.75 

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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