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Individual Calculations January 2020 |
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| Da Costa, Olga Total change: 6.80 | |   |
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| 2019 African Youth Chess Championship (Under 16 Girls) | Windhoek | NAM | 2019-12-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1434 | 1402 | 3.00 | 6 | 0.17 | 40 | 6.80 | |
|  Van Wyk, Keisha C | | | 1135 | NAM | 1.00 | 1 | 0.18 | 40 | 7.20 | | | Boubendir, Nesrine | | | 1521 | ALG | 0.00 | 1 | -0.34 | 40 | -13.60 | |  Nassr, Lina | | wm | 1802 * | ALG | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Ramarolafy, Grace Gloria | | | 1186 | MAD | 1.00 | 1 | 0.22 | 40 | 8.80 | | | Otisitswe, Ruth | | | 1634 | BOT | 1.00 | 1 | 0.79 | 40 | 31.60 | | | Mboya, Audrey Tracy | | | 1327 | KEN | 0.00 | 1 | -0.60 | 40 | -24.00 | | | * 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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