Individual Calculations April 2009
 Koes, Richard  Total change: 9.90  Rating chartPersonal card
 3G - Corus Chess Tournament - Tienkampen Wijk aan Zee NED 2009-01-23
RcRownchangeKK*chgGame
 1992 1938 4.50 9 0.66 15 9.90 
  Veldhuysen, Klaas 2019 NED1.0010.61159.15 
  Brinkers, Kees 2026 NED1.0010.62159.30 
  Skov, Palle 1932 DEN0.001-0.5115-7.65 
  Avis, Fred 1988 NED1.0010.57158.55 
  Molenaar, Christiaan 2020 NED0.5010.11151.65 
  Overweg, Danny 1968 NED0.5010.04150.60 
  Boot, Henk 1835 NED0.001-0.6415-9.60 
  Schipper, Paul 2118 NED0.001-0.2615-3.90 
  Volkers, Annemarie 2023 NED0.5010.12151.80 

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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