Individual Calculations February 2013
 Al-Ghasra, Ali  Total change: -2.55  Rating chartPersonal card
 Oruba Club Open 2012 Manama BRN 2012-07-28
 2383 2108 0.00 1 -0.17 15 -2.55 
  Karim, Ismael m2383 MAR0.001-0.1715-2.55 

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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