Individual Calculations September 2023
 Sierra, Henry Alberto  Total change: -17.00  Rating chartPersonal card
 XXX IRT Aficionados Feria de Las Flores Medellin 30 Anios Medellin COL 2023-08-03
RcRownchangeKK*chgGame
 1602 1455 0.50 4 -0.85 20 -17.00 
  Idarraga, Oscar 1810 COL0.001-0.1120-2.20 
  Restrepo Cifuentes, Luciana 1579 COL0.5010.17203.40 
  Matta, Paola Andrea 1806 COL0.001-0.1120-2.20 
  Cardona, Marisol 1214 COL0.001-0.8020-16.00 

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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