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Individual Calculations September 2009 |
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| Boersma, Jan Total change: -12.60 | |   |
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| Dutch Open - Reserve A | Dieren | NED | 2009-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1842 | 2132 | 2.50 | 4 | -0.84 | 15 | -12.60 | |
|  Snikkers, Naomi | | | 1818 | NED | 1.00 | 1 | 0.14 | 15 | 2.10 | |  Burer, Audry | | | 1899 | NED | 0.50 | 1 | -0.29 | 15 | -4.35 | | | Evengroen, Henk-Jan | | | 1743 | NED | 0.00 | 1 | -0.91 | 15 | -13.65 | | | Brandenburg, Rik | | | 1908 | NED | 1.00 | 1 | 0.22 | 15 | 3.30 | |
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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