Individual Calculations September 2011
 Urbina Quiros, Edwin  Total change: 0.75  Rating chartPersonal card
 III Torneo Internacional de San Jose San Jose CRC 2011-06-14
 2093 2086 4.00 8 0.05 15 0.75 
  Montes Fonseca, Oscar 1951 CRC1.0010.32154.80 
  Hevia Alejano, Carlos Antonio f2465 CUB0.001-0.0915-1.35 
  Izaguirre M, Allan 1872 CRC1.0010.23153.45 
  Perez Perez, Osniel f2263 CUB0.5010.23153.45 
  Juarez Flores, Carlos A. m2340 GUA0.001-0.1915-2.85 
  Marin, Bryan 1764 CRC1.0010.13151.95 
  Davila, Carlos m2307 NCA0.001-0.2215-3.30 
  Cantillo Alvarado, Luis 1780 CRC0.501-0.3615-5.40 

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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