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Individual Calculations September 2009 |
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| Aly Ibrahim, Alaa Total change: 12.45 | |   |
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| Egy Open 1st Part | Cairo | EGY | 2009-07-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2113 | 2054 | 2.50 | 4 | 0.83 | 15 | 12.45 | |
|  Samy, Amro | | | 2130 | EGY | 1.00 | 1 | 0.60 | 15 | 9.00 | |  Shaarawy, Ahmed | | | 2125 | EGY | 0.00 | 1 | -0.40 | 15 | -6.00 | | | Samy, Mahmoud | | | 2082 | EGY | 1.00 | 1 | 0.54 | 15 | 8.10 | | | Ibrahim, Mohamed | | | 2116 | EGY | 0.50 | 1 | 0.09 | 15 | 1.35 | |
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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