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Individual Calculations September 2017 |
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| Mahdi, Billel Total change: -23.20 | |   |
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| 2017 Semi final Algerian championship U12 Open | Medea | ALG | 2017-07-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1258 | 1154 | 0.50 | 3 | -0.58 | 40 | -23.20 | |
|  Kacem, Abdelkader | | | 1288 | ALG | 0.00 | 1 | -0.32 | 40 | -12.80 | |  Ferrad, Amine | | | 1167 | ALG | 0.50 | 1 | 0.02 | 40 | 0.80 | | | Lalam, Rayane | | | 1318 | ALG | 0.00 | 1 | -0.28 | 40 | -11.20 | |
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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