Individual Calculations May 2011
 Duncombe, Charles  Total change: 1.25  Rating chartPersonal card
 2nd Bahamas National Open Tournament 2011 Nassau BAH 2011-04-15
RcRownchangeKK*chgGame
 1734 1698 1.00 2 0.05 25 1.25 
  Major, Wilshire 1385 BAH1.0010.14253.50 
  Shabazz, Daaim 2083 USA0.001-0.0925-2.25 

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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