Individual Calculations February 2013
 Hall, Bobby J  Total change: 3.75  Rating chartPersonal card
 2013 Century West Open Los Angeles, California USA 2013-01-11
 1971 2032 2.00 3 0.25 15 3.75 
  Nita, Marian N 2108 USA0.5010.10151.50 
  Latib, Tameez 1841 RSA0.501-0.2515-3.75 
  Cherkasky, Dmitry 1963 ISR1.0010.40156.00 

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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