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Individual Calculations September 2011 |
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| Shafek, Mohamed Total change: -10.20 | |   |
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| 13th Mahalla Open 2011 | Mahalla | EGY | 2011-07-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2164 | 2074 | 0.50 | 3 | -0.68 | 15 | -10.20 | |
|  Abdel Hafeiz, Hassan | | | 1996 | EGY | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Yousry, Salah | f | | 2348 | EGY | 0.00 | 1 | -0.17 | 15 | -2.55 | |  Sayed, Hany | | | 2147 | EGY | 0.00 | 1 | -0.40 | 15 | -6.00 | |
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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