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Individual Calculations September 2009 |
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| Roorda, Thijs Total change: -47.55 | |   |
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| 3e Leiden Chess Tournament | Leiden | NED | 2009-07-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2007 | 2059 | 2.00 | 7 | -2.10 | 25 | -52.50 | |
|  Savchenko, Stanislav | g | | 2459 * | UKR | 0.00 | 1 | -0.08 | 25 | -2.00 | |  Schmit, Evert | | | 1872 | NED | 0.50 | 1 | -0.24 | 25 | -6.00 | | | Kirana, Marco | | | 1840 | NED | 0.00 | 1 | -0.78 | 25 | -19.50 | | | Oosthout, Wouter | | | 1971 | NED | 0.50 | 1 | -0.12 | 25 | -3.00 | | | Van Kempen, Roderick | | | 1982 | NED | 0.50 | 1 | -0.11 | 25 | -2.75 | | | De Swart, Sipke | | | 1979 | NED | 0.00 | 1 | -0.61 | 25 | -15.25 | | | Vreeburg, Jan | | | 1945 | NED | 0.50 | 1 | -0.16 | 25 | -4.00 | | | * 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) | | | NOTE: K factor changed | | University of Twente Open Dutch Youth Chess Championship 2009 | Enschede | NED | 2009-08-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2036 | 2059 | 4.00 | 7 | 0.33 | 15 | 4.95 | |
| | Tan, Jonathan | | | 2162 | NED | 1.00 | 1 | 0.64 | 15 | 9.60 | | | Goudriaan, Etienne | | | 2107 | NED | 0.00 | 1 | -0.43 | 15 | -6.45 | | | Vereggen, Lars | | | 1936 | NED | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Kabos, Tobias | | | 2122 | NED | 0.00 | 1 | -0.41 | 15 | -6.15 | | | Gorter, Eva | | | 1780 | NED | 0.50 | 1 | -0.34 | 15 | -5.10 | | | Beukema, Stefan | | | 2007 | NED | 1.00 | 1 | 0.43 | 15 | 6.45 | | | Blom, Vincent | | | 2137 | NED | 0.50 | 1 | 0.11 | 15 | 1.65 | |
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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