Individual Calculations September 2017
 Gosling, Brian Ge  Total change: -7.60  Rating chartPersonal card
 104th British Championships Major Open Llandudno ENG 2017-07-29
 1839 1825 3.00 7 -0.38 20 -7.60 
  Sugden, John N 2037 ENG0.001-0.2320-4.60 
  Samworth-Calvier, Juju 1594 ENG0.001-0.7920-15.80 
  Davidson, Laura J 1564 ENG0.501-0.3220-6.40 
  Ifalore, Michael 1911 ENG1.0010.622012.40 
  Robertson, Jim 1633 SCO1.0010.25205.00 
  Rice, Chris B 2009 ENG0.5010.24204.80 
  Costley, Martin O 2124 ENG0.001-0.1520-3.00 

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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