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Individual Calculations May 2010 |
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| Piechota, Piotr Total change: -18.15 | |   |
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| IV Wielkopolska Liga Szachowa grupa A | Wielkoposka | POL | 2009-12-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1717 | 1680 | 1.50 | 6 | -1.21 | 15 | -18.15 | |
|  Dura, Rafal | | | 1560 | POL | 1.00 | 1 | 0.34 | 15 | 5.10 | | | Kaczmarek, Piotr | | | 1850 | POL | 0.00 | 1 | -0.28 | 15 | -4.20 | | | Rozumek, Krzysztof | | | 1849 | POL | 0.00 | 1 | -0.28 | 15 | -4.20 | | | Kuzma, Mateusz | | | 1695 | POL | 0.00 | 1 | -0.48 | 15 | -7.20 | | | Hanusek, Krzysztof | | | 1679 | POL | 0.50 | 1 | 0.00 | 15 | 0.00 | |  Zielewicz, Piotr | | | 1670 | POL | 0.00 | 1 | -0.51 | 15 | -7.65 | |
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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