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Individual Calculations April 2008 |
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| Costello, Colin A Total change: -7.95 | |   |
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| Harmonie Open B | Groningen | NED | 2007-12-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1971 | 2023 | 2.50 | 4 | 0.22 | 15 | 3.30 | |
|  Brandenburg, Lucia | | | 1920 | NED | 1.00 | 1 | 0.36 | 15 | 5.40 | |  Willemsma, Abe | | | 2060 | NED | 0.50 | 1 | 0.05 | 15 | 0.75 | | | Ringoir, Guy | | | 1927 | BEL | 0.00 | 1 | -0.63 | 15 | -9.45 | | | Wubs, Harm | | | 1978 | NED | 1.00 | 1 | 0.44 | 15 | 6.60 | |
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) | | | | XI.Neujahrs-Open Guben Hotel Waldau | Guben | GER | 2008-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1990 | 2034 | 2.00 | 5 | -0.75 | 15 | -11.25 | |
| | Brener, Ilja | m | | 2384 | GER | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Skiba, Marta | | | 1684 | POL | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Kocwin, Bartosz | | | 2238 | POL | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Chomski, Maciej | | | 1719 | POL | 1.00 | 1 | 0.14 | 15 | 2.10 | | | Falke, Isaak | | | 1925 | GER | 0.00 | 1 | -0.65 | 15 | -9.75 | |
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) | | |
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