Individual Calculations April 2009
 Sirgado, Carlos Manuel Ferreira  Total change: -11.70  Rating chartPersonal card
 Distrital de Lisboa - Preliminar do GC Odivelas Odivelas POR 2009-01-31
 1805 1723 0.00 2 -0.78 15 -11.70 
  Mendes, Alberto Correa 1842 POR0.001-0.3415-5.10 
  Barreiros, Cilauro Neves 1768 POR0.001-0.4415-6.60 

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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