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Individual Calculations September 2009 |
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| Nader, Mohamed Total change: 12.30 | |   |
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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 |
| 2091 | 2028 | 1.00 | 3 | -0.24 | 15 | -3.60 | |
|  Hesham, Abdel R. | c | | 2130 | EGY | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Asaad, Moheb A. | | | 2088 | EGY | 0.00 | 1 | -0.42 | 15 | -6.30 | |  Hercules, Benjamin V. | | | 2054 | RSA | 1.00 | 1 | 0.54 | 15 | 8.10 | |
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) | | | | Egy Open 1st Part | Cairo | EGY | 2009-07-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2175 | 2028 | 2.50 | 4 | 1.28 | 15 | 19.20 | |
| | Abdel Moniem, Mohamed | | | 2131 | EGY | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Abdel Rahman, Alla | | | 2189 | EGY | 1.00 | 1 | 0.71 | 15 | 10.65 | | | Abdel Samee, Mohamed | | | 2235 | EGY | 1.00 | 1 | 0.77 | 15 | 11.55 | | | Mansour, Salah | | | 2146 | EGY | 0.50 | 1 | 0.16 | 15 | 2.40 | |
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) | | | | 5th Asiut International Open | Asiut | EGY | 2009-08-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2300 | 2028 | 0.50 | 4 | -0.22 | 15 | -3.30 | |
| | Rahman, Yehya | m | | 2293 | EGY | 0.50 | 1 | 0.32 | 15 | 4.80 | | | Hassan, Sayed Barakat | m | | 2344 | EGY | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Frhat, Ali | m | | 2397 | EGY | 0.00 | 1 | -0.10 | 15 | -1.50 | | | Raslan, Moustafa | | | 2166 | EGY | 0.00 | 1 | -0.31 | 15 | -4.65 | |
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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