Individual Calculations September 2021
 George Samir, David  Total change: 79.60  Rating chartPersonal card
 Sadat Open Menoufia EGY 2021-07-26
RcRownchangeKK*chgGame
 2137 1905 3.50 7 1.99 40 79.60 
  Ezat, Abdallah 2139 EGY1.0010.794031.60 
  Amin, Ashraf f2185 EGY0.001-0.1640-6.40 
  Abdel Fadil, Mohamed 2075 EGY0.5010.22408.80 
  Elmejbri, Ali A. f2005 LBA0.5010.14405.60 
  Yousry, Salah f2242 EGY1.0010.884035.20 
  Zayan, Osama 2180 EGY0.5010.334013.20 
  Mousa, Ahmed 2134 EGY0.001-0.2140-8.40 

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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