Individual Calculations September 2009
 Shabash, Abdullatief Mohamed  Total change: -17.55  Rating chartPersonal card
 2009 African Individual Chess Championship (gen) Tripoli LBA 2009-07-21
 2232 2193 2.00 7 -1.17 15 -17.55 
  Ezat, Mohamed m2459 EGY0.001-0.1815-2.70 
  Gator, Mosab 2076 LBA0.501-0.1615-2.40 
  Solomons, Deon c2210 RSA0.001-0.4815-7.20 
  Al-Zayat, Ahmed 1969 LBA1.0010.22153.30 
  Wageih, Kareim m2257 EGY0.001-0.4115-6.15 
  Asabri, Hussien f2220 LBA0.5010.04150.60 
  Arab, Adlane m2432 ALG0.001-0.2015-3.00 

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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