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Individual Calculations September 2009 |
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| Chahrani, Ibrahim Total change: -22.50 | |   |
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| 2009 African Individual Chess Championship (gen) | Tripoli | LBA | 2009-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2232 | 2280 | 3.00 | 8 | -1.50 | 15 | -22.50 | |
|  Amin, Bassem | g | | 2551 | EGY | 0.50 | 1 | 0.33 | 15 | 4.95 | |  Asabri, Hussien | f | | 2220 | LBA | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Humrana, Mostafa | | | 2114 | LBA | 0.00 | 1 | -0.72 | 15 | -10.80 | | | El, Kamel Adel Mahmoud | | | 2239 | TUN | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Kobese, Watu | m | | 2391 | RSA | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Oatlhotze, Providence | | | 2164 | BOT | 0.00 | 1 | -0.66 | 15 | -9.90 | | | Solomons, Deon | c | | 2210 | RSA | 0.00 | 1 | -0.60 | 15 | -9.00 | | | Al-Zayat, Ahmed | | | 1969 | LBA | 1.00 | 1 | 0.14 | 15 | 2.10 | |
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) | | |
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