Individual Calculations September 2010
 Solis, Efren  Total change: 7.95  Rating chartPersonal card
 Memorial Joaquin Gutierrez Mangel San Jose CRC 2010-07-26
 1992 2117 2.50 3 0.53 15 7.95 
  Sotela, Felipe 1837 CRC0.501-0.3415-5.10 
  Barrios Zamora, Carlos 2036 CRC1.0010.39155.85 
  Urbina Quiros, Edwin 2103 CRC1.0010.48157.20 

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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