Individual Calculations February 2023
 Gortemaker, Lucas  Total change: 15.80  Rating chartPersonal card
 Chessfestival Groningen 2022 Open B Groningen NED 2022-12-21
RcRownchangeKK*chgGame
 1863 1975 6.00 7 1.47 20 29.40 
  Van Der Meer, Henk 1762 NED1.0010.23204.60 
  Abma, Klaas 1794 NED1.0010.26205.20 
  Bruggink, Tycho 1865 NED1.0010.35207.00 
  Broersma, Sven 1757 NED1.0010.22204.40 
  Boeren, Jurriaan 1923 NED0.501-0.0720-1.40 
  Bakija, Alan 1898 NED0.501-0.1120-2.20 
  Jelic, Bruno 2039 NED1.0010.592011.80 

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)
 
 PRAGUE OPEN 2023 A - IM open Prague CZE 2023-01-06
RcRownchangeKK*chgGame
 1854 1975 5.00 9 -0.66 20 -13.20 
  Selvik, Elma 1575  * NOR1.0010.08201.60 
  Jansen, Bob 2194 NED0.001-0.2220-4.40 
  Pragnya, H G 1611 IND0.001-0.9020-18.00 
  Shamsuddin, Sayyid Usmon 1811 UZB1.0010.28205.60 
  Slusarczyk, Anna 1678 POL1.0010.15203.00 
  Dahl, Max 2169 NOR0.001-0.2520-5.00 
  Pejrimovska, Viola Ruby 1632 CZE1.0010.12202.40 
  Arndt, Stefan 2166 GER0.001-0.2520-5.00 
  Korniichuk, Oleksandra 1851 UKR1.0010.33206.60 
 * 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)
 
 Tata Steel dagvierkampen 2023 Wijk aan Zee NED 2023-01-16
RcRownchangeKK*chgGame
 1968 1975 1.00 2 -0.02 20 -0.40 
  Sterrenburg, Kees 1905 NED0.001-0.6020-12.00 
  Serdijn, Adinda 2030 NED1.0010.582011.60 

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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