Individual Calculations November 2023
 Spoelstra, Jan  Total change: -19.40  Rating chartPersonal card
 2023 IBCA World Individual Chess Championship for the Blind and Visually Impaired Rhodes GRE 2023-10-08
RcRownchangeKK*chgGame
 1608 1485 2.00 8 -0.97 20 -19.40 
  Schellmann, Frank c1944 GER0.001-0.0520-1.00 
  Gulamov, Ilkhom 1804 UZB0.001-0.1320-2.60 
  Balci, Muhammet 1381 TUR0.001-0.6420-12.80 
  Kapnakis, Konstantinos 1085  * GRE0.501-0.4220-8.40 
  Makkinje, Jeroen 1361 NED1.0010.33206.60 
  Bogatu, Vasile 1588 MDA0.5010.14202.80 
  Riegler, Dieter 1844 GER0.001-0.1020-2.00 
  Mikulec, Martin 1855 SVK0.001-0.1020-2.00 
 * Rating difference of more than 400. Please read more at FIDE Handbook

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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