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Individual Calculations September 2009 |
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| Hesham, Abdelrahman Total change: 24.90 | |   |
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| African Youth Chess Championships 2009 (u18 Boys) | Cape Town | RSA | 2009-07-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2057 | 2130 | 2.00 | 3 | 0.20 | 15 | 3.00 | |
|  Rahman, Mohamed Na. | | | 2028 | EGY | 1.00 | 1 | 0.36 | 15 | 5.40 | |  Asaad, Moheb A. | | | 2088 | EGY | 0.50 | 1 | -0.06 | 15 | -0.90 | | | Hercules, Benjamin V. | | | 2054 | RSA | 0.50 | 1 | -0.10 | 15 | -1.50 | |
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) | | | | Egy Open 1st Part | Cairo | EGY | 2009-07-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2193 | 2130 | 4.00 | 6 | 1.51 | 15 | 22.65 | |
| | Eldardery, Alaa | | | 2228 | EGY | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Zayan, Osama | | | 2183 | EGY | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Tahoun, Emad | | | 2169 | EGY | 1.00 | 1 | 0.55 | 15 | 8.25 | | | Lotfy, Abdel Rahman | | | 2149 | EGY | 1.00 | 1 | 0.53 | 15 | 7.95 | | | Saber, Ibrahim | | | 2218 | EGY | 0.00 | 1 | -0.38 | 15 | -5.70 | | | Fahmy, Osama | | | 2213 | EGY | 0.00 | 1 | -0.39 | 15 | -5.85 | |
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) | | | | 5th Asiut International Open | Asiut | EGY | 2009-08-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2187 | 2130 | 2.50 | 6 | -0.05 | 15 | -0.75 | |
| | Amin, Ashraf | | | 2357 | EGY | 0.50 | 1 | 0.29 | 15 | 4.35 | | | Hassan, Sayed Barakat | m | | 2344 | EGY | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Elgabry, Mohsen | m | | 2324 | EGY | 0.00 | 1 | -0.25 | 15 | -3.75 | | | Sedeik, Moustafa | | | 1849 | EGY | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Sadek, Taha | | | 2016 | EGY | 1.00 | 1 | 0.34 | 15 | 5.10 | | | Mousa, Ahmed | | | 2231 | EGY | 0.00 | 1 | -0.36 | 15 | -5.40 | |
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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