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Individual Calculations September 2009 |
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| Pruijssers, Roeland Total change: 13.50 | |   |
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| Intomart GfK Open 2009 | Hilversum | NED | 2009-06-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2308 | 2442 | 5.50 | 9 | -0.41 | 10 | -4.10 | |
|  Wismeijer, Jeroen | | | 2122 | NED | 1.00 | 1 | 0.13 | 10 | 1.30 | | | Fridman, Daniel | g | | 2646 | GER | 0.50 | 1 | 0.26 | 10 | 2.60 | |  Spoelman, Wouter | m | | 2512 | NED | 0.00 | 1 | -0.40 | 10 | -4.00 | | | Van Der Lende, Ilias | | | 2092 | NED | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Heemskerk, Wim | f | | 2202 | NED | 0.00 | 1 | -0.80 | 10 | -8.00 | | | Van Engen, Herman | | | 2163 | NED | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Haslinger, Stewart G | g | | 2544 | ENG | 0.00 | 1 | -0.36 | 10 | -3.60 | | | De Graaf, Dick | | | 2184 | NED | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Motoc, Alina | | wg | 2304 | ROU | 1.00 | 1 | 0.31 | 10 | 3.10 | |
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 |
| 2292 | 2401 | 5.50 | 9 | -0.24 | 10 | -2.40 | |
| | Kabos, Tobias | | | 2122 | NED | 1.00 | 1 | 0.16 | 10 | 1.60 | | | L`ami, Erwin | g | | 2593 | NED | 0.00 | 1 | -0.25 | 10 | -2.50 | | | Haast, Anne | | | 2158 | NED | 1.00 | 1 | 0.20 | 10 | 2.00 | | | Ootes, Lars | | | 2261 | NED | 0.00 | 1 | -0.69 | 10 | -6.90 | | | Van Leent, Dimitri | f | | 2192 | NED | 1.00 | 1 | 0.23 | 10 | 2.30 | | | Klein, David | | | 2236 | NED | 0.50 | 1 | -0.22 | 10 | -2.20 | | | Sprangers, Remco | c | | 2222 | NED | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Reinderman, Dimitri | g | | 2565 | NED | 0.00 | 1 | -0.28 | 10 | -2.80 | | | Wempe, Joost | | | 2282 | NED | 1.00 | 1 | 0.34 | 10 | 3.40 | |
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) | | | | University of Twente Young Masters 2009 | Enschede | NED | 2009-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2455 | 2401 | 4.50 | 9 | 0.66 | 10 | 6.60 | |
| | Iotov, Valentin | g | | 2603 | BUL | 0.50 | 1 | 0.26 | 10 | 2.60 | | | Hoolt, Sarah | | wm | 2240 | GER | 0.50 | 1 | -0.21 | 10 | -2.10 | | | Melia, Salome | m | wg | 2441 | GEO | 0.50 | 1 | 0.06 | 10 | 0.60 | | | Rademakers, Evert | | | 2154 | NED | 1.00 | 1 | 0.19 | 10 | 1.90 | | | Moranda, Wojciech | m | | 2545 | POL | 0.50 | 1 | 0.19 | 10 | 1.90 | | | Van Oosterom, Chiel | m | | 2402 | NED | 1.00 | 1 | 0.50 | 10 | 5.00 | | | Zhigalko, Sergei | g | | 2621 | BLR | 0.00 | 1 | -0.22 | 10 | -2.20 | | | Geetha, Narayanan Gopal | g | | 2575 | IND | 0.00 | 1 | -0.27 | 10 | -2.70 | | | Giri, Anish | g | | 2518 | NED | 0.50 | 1 | 0.16 | 10 | 1.60 | |
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) | | | | International Youth Championship | Apolda | GER | 2009-08-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2347 | 2401 | 6.50 | 9 | 1.34 | 10 | 13.40 | |
| | Siebarth, Raiko | | | 2252 | GER | 0.50 | 1 | -0.20 | 10 | -2.00 | | | Hoolt, Sarah | | wm | 2240 | GER | 1.00 | 1 | 0.29 | 10 | 2.90 | | | Kuipers, Stefan | f | | 2324 | NED | 0.50 | 1 | -0.11 | 10 | -1.10 | | | Heimann, Andreas | m | | 2435 | GER | 1.00 | 1 | 0.55 | 10 | 5.50 | | | Hager, Joshua Aarash | | | 2217 | GER | 0.50 | 1 | -0.24 | 10 | -2.40 | | | Mihok, Oliver | f | | 2357 | HUN | 0.50 | 1 | -0.06 | 10 | -0.60 | | | Romanov, Evgeny | g | | 2589 | RUS | 0.50 | 1 | 0.24 | 10 | 2.40 | | | Kotainy, Jens | | | 2270 | GER | 1.00 | 1 | 0.32 | 10 | 3.20 | | | Figura, Atila Gajo | f | | 2436 | GER | 1.00 | 1 | 0.55 | 10 | 5.50 | |
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) | | |
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