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Individual Calculations September 2009 |
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| Beukema, Stefan Total change: 24.60 | |   |
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| Intomart GfK Open 2009 | Hilversum | NED | 2009-06-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2235 | 2009 | 3.00 | 9 | 1.00 | 15 | 15.00 | |
|  Nagtegaal, Kees | | | 2240 | NED | 0.50 | 1 | 0.29 | 15 | 4.35 | |  Krasenkow, Michal | g | | 2359 | POL | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Meurs, Tom | | | 2178 | NED | 1.00 | 1 | 0.72 | 15 | 10.80 | | | Heemskerk, Wim | f | | 2202 | NED | 0.00 | 1 | -0.25 | 15 | -3.75 | | | Bottema, Tom | | | 2224 | NED | 1.00 | 1 | 0.77 | 15 | 11.55 | | | Motoc, Alina | | wg | 2304 | ROU | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Van Ketel, Raoul | f | | 2278 | NED | 0.50 | 1 | 0.33 | 15 | 4.95 | | | Vogel, Jaap | f | | 2234 | NED | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Henseler, Jorgen | | | 2097 | NED | 0.00 | 1 | -0.38 | 15 | -5.70 | |
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 |
| 2253 | 2007 | 4.00 | 9 | 2.20 | 15 | 33.00 | |
| | Shreyansh, Daklia | | | 2279 | IND | 0.50 | 1 | 0.33 | 15 | 4.95 | | | Padmini, Rout | | wm | 2243 | IND | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Ellenbroek, Ton | | | 2115 | NED | 1.00 | 1 | 0.65 | 15 | 9.75 | | | Overeem, Marc | f | | 2303 | NED | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Van Der Velden, Bram | | | 2210 | NED | 1.00 | 1 | 0.76 | 15 | 11.40 | | | Laarhoven, Thijs | | | 2222 | NED | 1.00 | 1 | 0.77 | 15 | 11.55 | | | Van Assendelft, Floris | f | | 2332 | NED | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Vogel, Jaap | f | | 2237 | NED | 0.50 | 1 | 0.29 | 15 | 4.35 | | | Van Eijk, Sander | f | | 2338 | NED | 0.00 | 1 | -0.12 | 15 | -1.80 | |
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) | | | | University of Twente Open Dutch Youth Chess Championship 2009 | Enschede | NED | 2009-08-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1936 | 2007 | 2.00 | 6 | -1.56 | 15 | -23.40 | |
| | Ootes, Lars | | | 2261 | NED | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Van Akkeren, Arno | | | 1726 | GER | 0.00 | 1 | -0.84 | 15 | -12.60 | | | Poelman, Geoffrey | | | 1798 | BEL | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Meng, Roger | | | 1945 | NED | 0.00 | 1 | -0.59 | 15 | -8.85 | | | Roorda, Thijs | | | 2059 | NED | 0.00 | 1 | -0.43 | 15 | -6.45 | | | Sharshov, Wadim | | | 1825 | RUS | 1.00 | 1 | 0.26 | 15 | 3.90 | |
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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