Individual Calculations January 2019
 Wu, Derek Sijing  Total change: 2.80  Rating chartPersonal card
 North American Chess Festival for Youth and Childhood (Absolute and Female) "Baja California 2018" Under 16 Absolute Hotel Puerto Nuevo Baja Hotel & Villas, Tijuana-Ensenada freeway Km. 44.5 B.C. MEX 2018-11-28
RcRownchangeKK*chgGame
 2008 2031 2.50 6 -0.64 40 -25.60 
  Rodrigue-Lemieux, Shawn f2291 CAN0.001-0.1840-7.20 
  Huang, Qiuyu f2146 CAN0.5010.16406.40 
  Lu, Maximillian f2019 USA0.001-0.5240-20.80 
  De Dios Suarez, Diego Anas c1800 MEX1.0010.21408.40 
  Ge, Anthony 2058 USA0.001-0.4640-18.40 
  Baeza, Patricio 1731 MEX1.0010.15406.00 

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)
 
 GM Igor Ivanov Weekender Berkeley, California USA 2018-12-07
RcRownchangeKK*chgGame
 2075 2023 2.00 3 0.71 40 28.40 
  Winslow, Elliott Charles m2181 USA0.001-0.2940-11.60 
  Gaffagan, Steven 2036 USA1.0010.524020.80 
  Vidyarthi, Vyom 2007 USA1.0010.484019.20 

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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