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Individual Calculations April 2019 |
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| Villoen, Sharise Total change: 22.40 | |   |
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| 2019 Waterkloof Open (A) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1393 | 1162 | 0.00 | 4 | -0.89 | 40 | -35.60 | |
|  Maepane, Matome | | | 1445 | RSA | 0.00 | 1 | -0.16 | 40 | -6.40 | |  Wolmarans, Riekie | | | 1520 | RSA | 0.00 | 1 | -0.10 | 40 | -4.00 | | | Levitan, Caleb Levi | | | 1299 | RSA | 0.00 | 1 | -0.32 | 40 | -12.80 | | | Boshoma, Chisomo | | | 1306 | RSA | 0.00 | 1 | -0.31 | 40 | -12.40 | |
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) | | | | South African Junior Closed Chess Championships 2019 (u18 Girls) | Benoni | RSA | 2019-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1333 | 1162 | 3.50 | 7 | 1.45 | 40 | 58.00 | |
| | Booysen, Elda | | wc | 1493 | RSA | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Michaels, Carla Jesse | | | 1216 | RSA | 1.00 | 1 | 0.58 | 40 | 23.20 | | | Van Den Berg, Ane | | | 1286 | RSA | 1.00 | 1 | 0.67 | 40 | 26.80 | | | Dinham, Megan | | | 1232 | RSA | 0.50 | 1 | 0.10 | 40 | 4.00 | | | Engelbrecht, Hanri | | wf | 1421 | RSA | 0.00 | 1 | -0.18 | 40 | -7.20 | | | Wolmarans, Riekie | | | 1520 | RSA | 1.00 | 1 | 0.90 | 40 | 36.00 | | | Amrouni, Gabrielle | | | 1164 | RSA | 0.00 | 1 | -0.50 | 40 | -20.00 | |
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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