Individual Calculations December 2017
 Heath, David R  Total change: -14.40  Rating chartPersonal card
 2017 Central London Chess Congress (Major Section) London ENG 2017-11-03
 1623 1675 2.50 5 -0.36 40 -14.40 
  Hung, Jake 1664 ENG0.501-0.0240-0.80 
  Parry, Jacques 1594 ENG1.0010.394015.60 
  Singha, Swati 1394 IND0.501-0.3440-13.60 
  Denney, Simon C 1470 ENG0.501-0.2640-10.40 
  Xaxiris, E. 1993 GRE0.001-0.1340-5.20 

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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