Individual Calculations November 2011
 Hidayat, Arifin  Total change: -17.70  Rating chartPersonal card
 Indonesia Open Chess Championship 2011 Jakarta INA 2011-10-12
 2293 2159 2.00 8 -0.59 30 -17.70 
  Sitanggang, Salor m2376 INA0.001-0.2230-6.60 
  Gunawan, Johan f2308 INA1.0010.703021.00 
  Dimakiling, Oliver m2413 PHI0.001-0.1930-5.70 
  Firdaus, Maksum f2257 INA0.001-0.3730-11.10 
  Tedy, Sukirman f2239 INA0.001-0.3930-11.70 
  Pamungkas, Junaid 2240 INA1.0010.613018.30 
  Situru, Muhammad Ivan m2314 INA0.001-0.2930-8.70 
  Panggabean, Hasian 2199 INA0.001-0.4430-13.20 

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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