Individual Calculations April 2013
 Urbina Quiroz, Edwin  Total change: 30.30  Rating chartPersonal card
 Torneo Cerrado Goicoechea A Goicoechea CRC 2013-03-11
 2117 2116 6.00 8 2.02 15 30.30 
  Toro Soto, Anthony 2007 CRC1.0010.35155.25 
  Castro Garcia, Adrian 1946 CRC1.0010.28154.20 
  Fernandez Sanchez, Mario 2093 CRC1.0010.47157.05 
  Alvarez Hernandez, David 2161 CRC0.5010.06150.90 
  Alfaro Rojas, Alfonso f2264 CRC0.001-0.3015-4.50 
  Murillo Tsijli, Alexis m2300 CRC0.5010.24153.60 
  Cabrera Chaves, Marco Antonio 2128 CRC1.0010.52157.80 
  Quesada, Randall 2040 CRC1.0010.40156.00 

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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