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Individual Calculations September 2009 |
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| Kostecki, Rafal Total change: -9.50 | |   |
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| XI Miedzynarodowe Mistrzostwa Gdanska w szachach-Open B | Gdansk | POL | 2009-07-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1499 | 1838 | 0.50 | 1 | -0.38 | 25 | -9.50 | |
|  Socha, Roksana | | | 1499 | POL | 0.50 | 1 | -0.38 | 25 | -9.50 | |
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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