Individual Calculations April 2009
 Buitrago, Juan Carlos  Total change: -9.30  Rating chartPersonal card
 IRT X Open Feria de Cali ELITE Cali COL 2008-12-26
 2150 2169 2.00 5 -0.62 15 -9.30 
  Pazos Gambarrotti, Plinio m2327 ECU0.5010.21153.15 
  Remicio Duque, John H 2216 COL0.001-0.4315-6.45 
  Plazas, Alfonso 2025 COL0.501-0.1915-2.85 
  Schneider-Zinner, Werner 2043 AUT1.0010.33154.95 
  Mateus, Martha 2138 COL0.001-0.5415-8.10 

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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