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Individual Calculations March 2011 |
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| Cohen, Fredric S Total change: 6.25 | |   |
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| 1st North American Amateur Open | Skokie, Illinois | USA | 2011-02-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1854 | 1742 | 1.00 | 2 | 0.25 | 25 | 6.25 | |
|  Sun, Abe | | | 1659 | USA | 1.00 | 1 | 0.39 | 25 | 9.75 | |  Flaga, Krzysztof | | | 2048 | USA | 0.00 | 1 | -0.14 | 25 | -3.50 | |
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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