Individual Calculations December 2019
 Bizheva, Stefani  Total change: -15.20  Rating chartPersonal card
 The Battle for Troyan Open Troyan BUL 2019-11-09
 1083 1230 1.00 2 -0.38 40 -15.20 
  Ivanov, Denislav 1009 BUL0.501-0.2840-11.20 
  Parpulov, Tsvetomir 1157 BUL0.501-0.1040-4.00 

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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