Individual Calculations January 2012
 Perez Reisler, Jose  Total change: 13.65  Rating chartPersonal card
 Ponce Open Ponce PUR 2011-12-09
 2122 1865 1.50 3 0.91 15 13.65 
  Montalvo Rosario, Alejandro m2245 PUR1.0010.911513.65 
  Sosa Trani, Luis f2114 PUR0.001-0.1915-2.85 
  Ayala Sanchez, Abnel 2007 PUR0.5010.19152.85 

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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