Individual Calculations September 2009
 Abdelnabbi, Imed  Total change: -5.70  Rating chartPersonal card
 2009 African Individual Chess Championship (gen) Tripoli LBA 2009-07-21
 2353 2452 5.00 9 -0.57 10 -5.70 
  Oatlhotze, Providence 2164 BOT1.0010.16101.60 
  Zaibi, Amir c2123 TUN1.0010.12101.20 
  El Gindy, Essam g2501 EGY0.5010.07100.70 
  Adly, Ahmed g2548 EGY0.5010.13101.30 
  Ezat, Mohamed m2459 EGY0.5010.01100.10 
  Belkhodja, Slim g2467 TUN0.001-0.4810-4.80 
  Haddouche, Mohamed m2329 ALG0.501-0.1710-1.70 
  El, Kamel Adel Mahmoud 2239 TUN0.501-0.2710-2.70 
  Solomon, Kenny m2351 RSA0.501-0.1410-1.40 

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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