Individual Calculations February 2015
 Van Haaften, Adriaan  Total change: -16.20  Rating chartPersonal card
 Schaakfestival Groningen 2014 Open C Groningen NED 2014-12-21
 1644 1759 0.50 2 -0.81 20 -16.20 
  Nielsen, Thomas 1617 DEN0.001-0.6920-13.80 
  Hasan, Alhasan 1670 KUW0.501-0.1220-2.40 

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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