Individual Calculations February 2020
 Jap Tjoen San, Linda  Total change: 2.40  Rating chartPersonal card
 Tata Steel Weekendvierkampen 2020 Wijk aan Zee NED 2020-01-10
 1946 2042 2.00 3 0.12 20 2.40 
  Duson, Robin 2007 NED0.501-0.0520-1.00 
  De Wilde, Steven 1855 NED1.0010.26205.20 
  Laan, David 1976 NED0.501-0.0920-1.80 

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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