Blitz: Individual Calculations February 2013
 Urbina Quiroz, Edwin  Total change: 7.20  Rating chartPersonal card
 Torneo Blitz Paraiso 2012 Paraiso de Cartago CRC 2012-12-30
 1987 2116 5.00 7 0.36 20 7.20 
  Espinoza Rivas, Natalia 1808 CRC1.0010.14202.80 
  Murillo Tsijli, Manuel 2141 CRC0.001-0.4720-9.40 
  Acevedo Mendez, Lisseth 1989 CRC1.0010.33206.60 
  Solano Cuya, Bryan 1972 CRC1.0010.31206.20 
  Maynard, Francis 2136 CRC0.001-0.4720-9.40 
  Martinez, Huberth 1920 CRC1.0010.25205.00 
  Chavez, Gabriel 1941 CRC1.0010.27205.40 

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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