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Individual Calculations April 2009 |
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| Ratajczak, Jedrzej Total change: -7.50 | |   |
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| Wielkopolska III Liga Juniorow 2009 | Koscielec, Wolsztyn | POL | 2009-01-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1721 | 1720 | 0.50 | 2 | -0.50 | 15 | -7.50 | |
|  Kamecki, Mateusz | | | 1757 | POL | 0.00 | 1 | -0.45 | 15 | -6.75 | |  Stanicki, Kamil | | | 1684 | POL | 0.50 | 1 | -0.05 | 15 | -0.75 | |
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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