Individual Calculations January 2018
 Arcos Moreira, Sara Noemi  Total change: 20.40  Rating chartPersonal card
 VIII Campeonato Panamericano Escolar de Ajedrez Sub 11 Absoluto 2017 San Salvador ESA 2017-12-11
 1328 1321 3.00 5 0.51 40 20.40 
  Segura Cordero, Ariel 1254 CRC0.501-0.0940-3.60 
  Varela, Carlos Francisco 1615 MEX1.0010.854034.00 
  Clarke, Kishan 1389 JAM0.001-0.4140-16.40 
  Barboza Viquez, Martin Eduardo 1248 CRC1.0010.404016.00 
  Rodriguez Rosales, Alvaro 1133 MEX0.501-0.2440-9.60 

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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