Individual Calculations September 2009
 Nelson, William Jh.  Total change: 1.35  Rating chartPersonal card
 South African Open Chess Championship Cape Town RSA 2009-07-03
RcRownchangeKK*chgGame
 2140 2082 3.00 7 0.09 15 1.35 
  Bornheim, Craig 1788 RSA0.501-0.3515-5.25 
  De Villiers, Charles Ca. f2265 RSA0.001-0.2615-3.90 
  Bhawoodien, Shabier H. f2142 RSA1.0010.58158.70 
  Phiri, Richmond f2181 ZAM0.5010.14152.10 
  Steenkamp, Johan J. 2184 RSA0.001-0.3615-5.40 
  Solomon, Maxwell C. c2201 RSA0.5010.16152.40 
  Mateus, Alice f2216 MOZ0.5010.18152.70 

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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