Individual Calculations June 2018
 Devisti, Rostam  Total change: 8.20  Rating chartPersonal card
 19th Iranian Blind Chess Chmapionship 1397 Babolsar IRI 2018-04-28
RcRownchangeKK*chgGame
 1577 1477 2.00 4 0.41 20 8.20 
  Naderian, Farhad 1668 IRI0.001-0.2520-5.00 
  Rahimi, Abolghasem 1350 IRI1.0010.33206.60 
  Bagheri, Majid 1877  * IRI0.001-0.0820-1.60 
  Jafarian, Danial 1414 IRI1.0010.41208.20 
 * Rating difference of more than 400. Please read more at FIDE Handbook

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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