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Individual Calculations January 2019 |
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| Otisitswe, Ruth Total change: -64.40 | |   |
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| FRANCISTOWN INTERNATIONAL OPEN- LADIES 2018 | FRANCISTOWN | BOT | 2018-11-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1603 | 1693 | 2.00 | 5 | -1.04 | 40 | -41.60 | |
|  Mudongo, Boikhutso | | wm | 1723 | BOT | 0.50 | 1 | 0.04 | 40 | 1.60 | |  Ndachipiwa, Kgomotso | | | 1561 | BOT | 0.50 | 1 | -0.18 | 40 | -7.20 | | | Rankwane, Onneetse | | | 1347 | BOT | 1.00 | 1 | 0.11 | 40 | 4.40 | | | Charinda, Kudzanayi | | wc | 1717 | BOT | 0.00 | 1 | -0.47 | 40 | -18.80 | | | Makwena, Christine | | | 1665 | ZIM | 0.00 | 1 | -0.54 | 40 | -21.60 | |
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) | | | | 2018 Botswana International Junior Open Chess Championships_ U17 , U19, U21 Girls | Gaborone | BOT | 2018-11-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1510 | 1693 | 1.00 | 2 | -0.45 | 40 | -18.00 | |
| | Dusani, Segolame | | | 1408 | BOT | 0.00 | 1 | -0.84 | 40 | -33.60 | | | Shaba, Linda | | | 1611 | ZIM | 1.00 | 1 | 0.39 | 40 | 15.60 | |
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) | | | | 2018 African Schools Individual Chess Championships (U15 and U17 Girls) | Waterberg | RSA | 2018-12-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1435 | 1693 | 4.50 | 6 | -0.12 | 40 | -4.80 | |
| | Van Wyk, Keisha C | | | 1293 * | NAM | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Da Costa, Olga | | | 1293 * | ANG | 0.50 | 1 | -0.42 | 40 | -16.80 | | | Pires, Luzia | | wf | 1853 | ANG | 0.50 | 1 | 0.21 | 40 | 8.40 | | | Besa, Masaiti | | wf | 1584 | BOT | 0.50 | 1 | -0.15 | 40 | -6.00 | | | Milford, Zoe Melissa | | | 1293 * | RSA | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Horn, Caro | | | 1293 * | NAM | 1.00 | 1 | 0.08 | 40 | 3.20 | | | * 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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