Individual Calculations December 2012
 Martinez Peran, Sofia  Total change: -5.55  Rating chartPersonal card
 Campeonato Regional por Equipos Murcia 2012–Segunda Division Murcia ESP 2012-10-06
 1547 1500 0.50 2 -0.37 15 -5.55 
  Blesa Fernandez, Ignacio 1511 ESP0.5010.02150.30 
  Portillo Alcalde, Jose Maria 1583 ESP0.001-0.3915-5.85 

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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