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Individual Calculations July 2009 |
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| Slagter, David Total change: -30.25 | |   |
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| 3B - r 6-9 - Dutch Team Competition | Various | NED | 2008-09-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2020 | 2068 | 1.00 | 1 | 0.43 | 25 | 10.75 | |
|  Veltman, Anne | | | 2020 | NED | 1.00 | 1 | 0.43 | 25 | 10.75 | |
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) | | | | NOSBO Kampioenschap 2009 | Groningen | NED | 2009-02-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1989 | 2068 | 1.00 | 3 | -0.75 | 25 | -18.75 | |
| | Mostertman, Johan | | | 1718 | NED | 1.00 | 1 | 0.11 | 25 | 2.75 | |  Clemens, Adrian | f | | 2251 | NED | 0.00 | 1 | -0.26 | 25 | -6.50 | | | Hummel, Joop | | | 1997 | NED | 0.00 | 1 | -0.60 | 25 | -15.00 | |
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) | | | | NKJ 2009 - B Jeugd | Venlo | NED | 2009-04-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2089 | 2068 | 1.00 | 4 | -0.89 | 25 | -22.25 | |
| | Klein, David | | | 2233 | NED | 0.00 | 1 | -0.28 | 25 | -7.00 | | | Rauw, Gert Jan | | | 2046 | NED | 0.00 | 1 | -0.53 | 25 | -13.25 | | | Swinkels, Maurice | | | 1977 | NED | 1.00 | 1 | 0.38 | 25 | 9.50 | | | Hachijan, Armen | | | 2098 | NED | 0.00 | 1 | -0.46 | 25 | -11.50 | |
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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