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Individual Calculations January 2019 |
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| Costa, Bruno Total change: -38.40 | |   |
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| 2018 African Schools Individual Chess Championships (U11 and U13 Boys) | Waterberg | RSA | 2018-12-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1494 | 1696 | 2.00 | 4 | -0.96 | 40 | -38.40 | |
|  Lefyedi, Thatego | | | 1296 * | RSA | 0.50 | 1 | -0.42 | 40 | -16.80 | |  Marape, Naledi | | wf | 1646 | BOT | 1.00 | 1 | 0.43 | 40 | 17.20 | | | Masala, Iphazha | c | | 1477 | BOT | 0.00 | 1 | -0.78 | 40 | -31.20 | | | Oosthuizen, Michal Jacobus | | | 1558 | RSA | 0.50 | 1 | -0.19 | 40 | -7.60 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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