Individual Calculations December 2019
 Rodriguez Retana, Sofia  Total change: 15.60  Rating chartPersonal card
 Campeonato Panamericano Amateur U1700 2019 San Jose CRC 2019-10-23
 1456 1219 1.50 5 0.39 40 15.60 
  Reyes Aristizabal, Andres 1605 COL0.5010.414016.40 
  Villegas Rodriguez, Jeremy 1553 CRC0.001-0.1240-4.80 
  Wong Yau, Daniel Segundo 1476 PER0.001-0.1840-7.20 
  Guevara Cornejo, Gabriel 1338 CRC0.5010.16406.40 
  Solano Saltachin, Ruth 1308 CRC0.5010.12404.80 

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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