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Individual Calculations April 2009 |
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| Spaans, Giel Total change: -22.65 | |   |
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| 2A - r 4-5 - Dutch Team Competition | Various | NED | 2008-09-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2122 | 2149 | 0.50 | 2 | -0.57 | 15 | -8.55 | |
|  Potze, Rudolf | | | 2089 | NED | 0.00 | 1 | -0.58 | 15 | -8.70 | | | Janssen, Erik | | | 2155 | NED | 0.50 | 1 | 0.01 | 15 | 0.15 | |
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) | | | | 2D - Corus Chess Tournament - Weekendvierkampen | Wijk aan Zee | NED | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2173 | 2158 | 0.50 | 3 | -0.94 | 15 | -14.10 | |
| | Duijn, Rob | | | 2209 | NED | 0.00 | 1 | -0.43 | 15 | -6.45 | |  Van Egmond, Enrico | | | 2132 | NED | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Floor, Dick | | | 2179 | NED | 0.00 | 1 | -0.47 | 15 | -7.05 | |
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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