Individual Calculations October 2008
 Sierra, Edwin Andres  Total change: -15.75  Rating chartPersonal card
 IRT Torneo de Ajedrez Ciudad de Agua deDios Agua de Dios CUN COL 2008-06-28
 2245 2083 0.00 2 -0.63 25 -15.75 
  Barrientos, Sergio E m2405 COL0.001-0.1325-3.25 
  Pena Duarte, Fabian Dario 2084 COL0.001-0.5025-12.50 

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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