Individual Calculations February 2019
 Nguyen, Piotr  Total change: 17.30  Rating chartPersonal card
 XXX International Chess Open Roquetas de Mar 2019 Roquetas de Mar ESP 2019-01-02
 2370 2403 6.50 9 1.73 10 17.30 
  Avila Fraire, Ameyalli wc2007 MEX1.0010.08100.80 
  Lopez Quevedo, Eduardo 2197 ESP1.0010.24102.40 
  Shirov, Alexei g2658 ESP0.5010.31103.10 
  Grigoryan, Karen H. g2557 ARM0.001-0.2910-2.90 
  Carbonell Sancho, Marc 2203 ESP1.0010.24102.40 
  Sanchez Jerez, Emilio Miguel f2183 ESP1.0010.22102.20 
  Nasuta, Grzegorz g2534 POL1.0010.68106.80 
  Espinosa Aranda, Angel m2478 ESP0.001-0.4010-4.00 
  Kantor, Gergely m2514 HUN1.0010.65106.50 

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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