Individual Calculations September 2019
 Costello, Alexander  Total change: 37.60  Rating chartPersonal card
 2019 NAYCC U18 Open Kingston CAN 2019-08-16
 2198 2256 7.00 9 1.88 20 37.60 
  Merrigan, Daley 1917 CAN1.0010.12202.40 
  Li, William 2139 CAN1.0010.34206.80 
  Yip, Carissa fwm2300 USA0.001-0.4420-8.80 
  Li, Max 2113 USA1.0010.31206.20 
  Chen, Richard f2291 CAN1.0010.552011.00 
  Ouellet, Maili-Jade wm2211 CAN1.0010.44208.80 
  Doknjas, Joshua c2237 CAN0.501-0.0320-0.60 
  Wang, Wesley f2269 USA0.5010.02200.40 
  Hua, Eugene f2303 CAN1.0010.572011.40 

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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