Rapid: Individual Calculations October 2013
 Al Jabri, Mohammed Ali  Total change: 6.20  Rating chartPersonal card
 Makkah Open International rapid chess tournament Makkah KSA 2013-09-06
RcRownchangeKK*chgGame
 1734 2027 2.00 2 0.31 20 6.20 
  Abdul Aziz, Nasser 1700 EGY1.0010.13202.60 
  Al Turky, Fahad A 1767 KSA1.0010.18203.60 

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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