Individual Calculations September 2009
 Koch, Hermann H.  Total change: 5.25  Rating chartPersonal card
 Jubilee Open Master 2009 Zurich SUI 2009-08-09
 2198 2006 2.50 9 0.21 25 5.25 
  Kadziolka, Beata wg2289 POL0.001-0.1625-4.00 
  Potterat, Marc 2172 SUI1.0010.722518.00 
  Szakolczai, Peter f2275 HUN0.5010.33258.25 
  Borne, Niels f2286 FRA0.001-0.1625-4.00 
  Myers, Goeffrey 2158 SUI0.5010.20255.00 
  Lipecki, Alexander 2161 SUI0.001-0.2925-7.25 
  Porras, Campo Ruben 2129 ESP0.001-0.3325-8.25 
  Illi, Hans-Joerg 2132 SUI0.5010.17254.25 
  Gosch, Manfred 2179 SUI0.001-0.2725-6.75 

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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