Individual Calculations December 2017
 Courtney, John  Total change: -4.20  Rating chartPersonal card
 Armstrong Cup 2017-18 Rounds 1-2 Various IRL 2017-09-16
RcRownchangeKK*chgGame
 1991 2091 0.50 1 -0.14 20 -2.80 
  Fox, Anthony 1991 IRL0.501-0.1420-2.80 

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)
 
 Armstrong Cup 2017-18 Rounds 3-4 Various IRL 2017-10-28
RcRownchangeKK*chgGame
 2039 2091 0.50 1 -0.07 20 -1.40 
  O`donovan, Richard 2039 IRL0.501-0.0720-1.40 

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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