Individual Calculations September 2009
 Sonntag, Hermann  Total change: 8.55  Rating chartPersonal card
 18.Apolda Open Apolda GER 2009-08-20
RcRownchangeKK*chgGame
 2010 2113 5.00 7 0.57 15 8.55 
  Wendling, Jens 1941 GER1.0010.27154.05 
  Tischer, Jana 1891 GER1.0010.22153.30 
  Feuerstack, Aljoscha 2367 GER0.001-0.1915-2.85 
  Christiani, Joerg 2018 GER0.501-0.1315-1.95 
  Bluhm, Achim 2021 GER0.501-0.1315-1.95 
  Koerber, Thomas 2031 GER1.0010.39155.85 
  Roemer, Norbert 1799 GER1.0010.14152.10 

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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