Individual Calculations September 2019
 Qiao, Cindy  Total change: -82.40  Rating chartPersonal card
 2019 NAYCC U18 Girls Kingston CAN 2019-08-16
RcRownchangeKK*chgGame
 1811 1822 0.00 4 -2.06 40 -82.40 
  Ehsani, Yassamin wc1948 USA0.001-0.3340-13.20 
  Cao, Yingying Lucy 1704 CAN0.001-0.6640-26.40 
  Karelina, Polina wc1689 BAH0.001-0.6840-27.20 
  Jie, Tianhui Cindy 1902 USA0.001-0.3940-15.60 

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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