Individual Calculations July 2008
 Solis, Efren  Total change: -1.80  Rating chartPersonal card
 Campeonato Nacional de Costa Rica 2007 Fase I San Jose CRC 2007-06-03
 2095 2120 2.00 4 -0.12 15 -1.80 
  Granados, Carlos 2201 CRC0.001-0.3915-5.85 
  Espinoza, Warner 1897 CRC1.0010.22153.30 
  Alfaro, Carlos 2114 CRC0.001-0.5115-7.65 
  Rodriguez, Adrian 2166 CRC1.0010.56158.40 

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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