Individual Calculations February 2020
 Jackson, Peter D.  Total change: -37.40  Rating chartPersonal card
 LCU Ennis Shield 2019-20 Rounds 2-5 Leinster IRL 2019-10-07
RcRownchangeKK*chgGame
 1645 1800 0.50 1 -0.21 20 -4.20 
  Moran, Hugh 1645 IRL0.501-0.2120-4.20 

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)
 
 LCU Ennis Shield 2019-20 Round 6 Leinster IRL 2020-01-01
RcRownchangeKK*chgGame
 1923 1798 0.50 1 0.17 20 3.40 
  Murray, Jim 1923 IRL0.5010.17203.40 

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)
 
 The Irish over 50 and over 65 Championships 2020 Dublin IRL 2020-01-02
RcRownchangeKK*chgGame
 1627 1798 3.00 7 -1.83 20 -36.60 
  O`connell, Michael Joseph 1402 IRL1.0010.08201.60 
  Morriss, Pete 2001 IRL0.001-0.2420-4.80 
  O`daly, Liam 1691 IRL0.501-0.1520-3.00 
  Coldrick, Art 1764 IRL0.501-0.0520-1.00 
  Barry, Suzanne 1398  * IRL0.001-0.9220-18.40 
  Maher, John 1483 IRL0.501-0.3620-7.20 
  Lynch, Peter J. 1653 IRL0.501-0.1920-3.80 
 * 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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