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Individual Calculations May 2010 |
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| Kowalak, Piotr Total change: -18.90 | |   |
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| Dolnoslaska Liga Szachowa | Dolny Slask | POL | 2009-10-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1995 | 2167 | 3.00 | 6 | -1.26 | 15 | -18.90 | |
|  Zdunowski, Mariusz | | | 2060 | POL | 0.50 | 1 | -0.15 | 15 | -2.25 | | | Plotka, Wojciech | | | 2038 | POL | 0.00 | 1 | -0.67 | 15 | -10.05 | | | Stawarz, Pawel | | | 2129 | POL | 0.00 | 1 | -0.55 | 15 | -8.25 | |  Wrobel, Maciej | | | 1883 | POL | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Zak, Pawel | | | 1792 | POL | 1.00 | 1 | 0.09 | 15 | 1.35 | | | Gromczak, Dariusz | | | 2065 | POL | 0.50 | 1 | -0.14 | 15 | -2.10 | |
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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