Individual Calculations April 2009
 Zegstroo, Martin  Total change: -7.35  Rating chartPersonal card
 4I - Corus Chess Tournament - Dagvierkampen Wijk aan Zee NED 2009-01-19
RcRownchangeKK*chgGame
 1883 1878 0.50 2 -0.49 15 -7.35 
  Jostmeijer, Erik 1968 NED0.5010.12151.80 
  Eijsvogel, Boudewijn 1798 NED0.001-0.6115-9.15 

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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