Individual Calculations February 2013
 Ippel, Cok  Total change: -13.20  Rating chartPersonal card
 Tata Steel Chess Tournament 2013 Tienkampen 4Z Wijk aan Zee NED 2013-01-18
RcRownchangeKK*chgGame
 1899 1929 4.00 9 -0.88 15 -13.20 
  Swart, Dirk-Willem 1805 NED0.001-0.6715-10.05 
  Marshall, Michael 1879 DEN1.0010.43156.45 
  Adema, Ruud 1978 NED1.0010.57158.55 
  Hamersma, Peter 1885 NED0.501-0.0615-0.90 
  Zahn, Alina 1887 GER0.001-0.5615-8.40 
  Van Leusden, D 1942 NED0.5010.02150.30 
  Roomer, Paul 1902 NED1.0010.46156.90 
  Boots, Johan 1953 NED0.001-0.4715-7.05 
  Keesman, Karel 1859 NED0.001-0.6015-9.00 

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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