Individual Calculations September 2010
 Markzon, Gregory  Total change: -15.45  Rating chartPersonal card
 38th Annual World Open - U2400 Section King of Prussia, Pennsylvania USA 2010-06-29
RcRownchangeKK*chgGame
 2222 2193 0.50 2 -0.42 15 -6.30 
  Melekhina, Alisa wm2265 USA0.001-0.4015-6.00 
  Weeramantry, Sunil f2179 SRI0.501-0.0215-0.30 

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)
 
 40th Annual Continental Open Sturbridge, Massachusetts USA 2010-08-12
RcRownchangeKK*chgGame
 2059 2215 1.50 3 -0.61 15 -9.15 
  Chiang, Michael 1968 USA0.501-0.3115-4.65 
  Solonkovich, Ilya 2100 USA0.501-0.1615-2.40 
  Plotkin, David A 2110 USA0.501-0.1415-2.10 

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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