Individual Calculations April 2009
 Roemersma, Aad  Total change: -13.50  Rating chartPersonal card
 3D - r 4-5 - Dutch Team Competition Various NED 2008-09-27
RcRownchangeKK*chgGame
 2098 2173 1.00 2 -0.21 15 -3.15 
  Smorenberg, Jeroen 2137 NED0.501-0.0515-0.75 
  Manuel, Peter 2059 NED0.501-0.1615-2.40 

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)
 
 2D - Corus Chess Tournament - Tienkampen Wijk aan Zee NED 2009-01-23
RcRownchangeKK*chgGame
 2117 2176 4.50 9 -0.69 15 -10.35 
  Van Der Velde, Wytse 1970 NED0.501-0.2615-3.90 
  De Graaf, D 2064 NED0.001-0.6515-9.75 
  Osterwald, Elwin 2196 NED0.5010.03150.45 
  Utama, Ivan c2175 NED0.5010.00150.00 
  Holscher, Peter 2104 NED0.501-0.1015-1.50 
  Slisser, Theo 2145 NED1.0010.46156.90 
  Van Geffen, Ben 2144 NED0.001-0.5415-8.10 
  De Groot, Marco 2147 NED1.0010.46156.90 
  Vlaming, Jos P 2112 NED0.501-0.0915-1.35 

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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