Individual Calculations September 2009
 Oatlhotze, Providence  Total change: 17.25  Rating chartPersonal card
 2009 African Individual Chess Championship (gen) Tripoli LBA 2009-07-21
 2333 2164 3.50 8 1.15 15 17.25 
  Abdelnabbi, Imed m2452 EGY0.001-0.1615-2.40 
  Sarwat, Walaa m2390 EGY0.001-0.2115-3.15 
  Ranaivoharisoa, Alain 2083 MAD0.501-0.1115-1.65 
  El, Kamel Adel Mahmoud 2239 TUN0.5010.10151.50 
  Chahrani, Ibrahim f2280 LBA1.0010.66159.90 
  Frhat, Ali m2397 EGY1.0010.791511.85 
  Rizouk, Aimen g2506 ALG0.001-0.1215-1.80 
  Kaabi, Mejdi m2313 TUN0.5010.20153.00 

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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