Individual Calculations February 2023
 De Haan, Hans  Total change: -8.20  Rating chartPersonal card
 Tata Steel Tienkampen 2023 Wijk aan Zee NED 2023-01-20
RcRownchangeKK*chgGame
 1741 1813 5.00 9 -0.41 20 -8.20 
  Breurkes, Richard 1729 NED0.501-0.1220-2.40 
  Veerman, Jan 1802 NED0.001-0.5220-10.40 
  Boersma, David 1791 SWE0.001-0.5320-10.60 
  Timmerman, Jan 1674 NED1.0010.31206.20 
  Bouma, Dick 1764 NED0.501-0.0720-1.40 
  Bos, Bas 1687 NED0.501-0.1720-3.40 
  De Jonge, Edwin 1768 NED1.0010.44208.80 
  Stroosma, Harry 1706 NED0.501-0.1520-3.00 
  Hendriks, Jos 1744 NED1.0010.40208.00 

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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