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Individual Calculations September 2009 |
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| Goudriaan, Etienne Total change: 61.50 | |   |
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| Intomart GfK Open 2009 | Hilversum | NED | 2009-06-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2239 | 2104 | 4.00 | 9 | 1.07 | 15 | 16.05 | |
|  Miedema, Roi | f | | 2370 | NED | 0.00 | 1 | -0.18 | 15 | -2.70 | |  Theulings, Paul-Peter | c | | 2147 | NED | 1.00 | 1 | 0.56 | 15 | 8.40 | | | Heemskerk, Wim | f | | 2202 | NED | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Hopman, Pieter | | | 2325 | NED | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Vogel, Jaap | f | | 2234 | NED | 0.50 | 1 | 0.18 | 15 | 2.70 | | | Bottema, Tom | | | 2224 | NED | 1.00 | 1 | 0.66 | 15 | 9.90 | | | Motoc, Alina | | wg | 2304 | ROU | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Van Engen, Herman | | | 2163 | NED | 0.50 | 1 | 0.08 | 15 | 1.20 | | | Meurs, Tom | | | 2178 | NED | 0.50 | 1 | 0.10 | 15 | 1.50 | |
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) | | | | Dutch Open | Dieren | NED | 2009-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2261 | 2107 | 5.00 | 9 | 2.34 | 15 | 35.10 | |
| | Van Assendelft, Floris | f | | 2332 | NED | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Spaan, Nathanael | | | 2194 | NED | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Vogel, Jaap | f | | 2237 | NED | 0.50 | 1 | 0.18 | 15 | 2.70 | | | Rajesh, V A V | f | | 2249 | IND | 0.50 | 1 | 0.19 | 15 | 2.85 | | | Van Der Poel, Henk | f | | 2282 | NED | 0.50 | 1 | 0.23 | 15 | 3.45 | | | Sprangers, Remco | c | | 2222 | NED | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Van Veen, Oscar | f | | 2233 | NED | 1.00 | 1 | 0.67 | 15 | 10.05 | | | Kodentsov, Grigori | f | | 2279 | NED | 1.00 | 1 | 0.73 | 15 | 10.95 | | | Kuipers, Stefan | f | | 2324 | NED | 0.50 | 1 | 0.28 | 15 | 4.20 | |
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) | | | | University of Twente Open Dutch Youth Chess Championship 2009 | Enschede | NED | 2009-08-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2021 | 2107 | 5.50 | 8 | 0.69 | 15 | 10.35 | |
| | Poelman, Geoffrey | | | 1798 | BEL | 1.00 | 1 | 0.14 | 15 | 2.10 | | | Bollen, Guus | | | 1880 | NED | 1.00 | 1 | 0.21 | 15 | 3.15 | | | Roorda, Thijs | | | 2059 | NED | 1.00 | 1 | 0.43 | 15 | 6.45 | | | De Groote, Ewoud | | | 2206 | NED | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Meng, Roger | | | 1945 | NED | 0.00 | 1 | -0.71 | 15 | -10.65 | | | Nicolai, Amir | | | 1837 | NED | 1.00 | 1 | 0.17 | 15 | 2.55 | | | Ootes, Lars | | | 2261 | NED | 0.50 | 1 | 0.21 | 15 | 3.15 | | | Meurs, Tom | | | 2179 | NED | 1.00 | 1 | 0.60 | 15 | 9.00 | |
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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