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Individual Calculations April 2019 |
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| Wolmarans, Riekie Total change: -38.40 | |   |
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| 2019 Waterkloof Open (A) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1627 | 1520 | 2.50 | 5 | 0.61 | 40 | 24.40 | |
|  Du Plessis, Heinco | | | 1920 * | RSA | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Villoen, Sharise | | | 1162 | RSA | 1.00 | 1 | 0.10 | 40 | 4.00 | | | Oosthuizen, Michal Jacobus | | | 1678 | RSA | 0.50 | 1 | 0.21 | 40 | 8.40 | | | Smit, Devon | | | 1530 | RSA | 0.50 | 1 | 0.01 | 40 | 0.40 | | | Nene, Themba | | | 1844 | RSA | 0.50 | 1 | 0.37 | 40 | 14.80 | | | * 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) | | | | South African Junior Closed Chess Championships 2019 (u18 Girls) | Benoni | RSA | 2019-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1274 | 1520 | 5.50 | 9 | -1.57 | 40 | -62.80 | |
| | Amrouni, Gabrielle | | | 1164 | RSA | 1.00 | 1 | 0.11 | 40 | 4.40 | | | Van Heerden, Lara | | | 1376 | RSA | 1.00 | 1 | 0.31 | 40 | 12.40 | | | Booysen, Elda | | wc | 1493 | RSA | 0.50 | 1 | -0.04 | 40 | -1.60 | | | Engelbrecht, Hanri | | wf | 1421 | RSA | 0.00 | 1 | -0.64 | 40 | -25.60 | | | Emanuel, Prithee | | | 1120 * | RSA | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Dinham, Megan | | | 1232 | RSA | 0.50 | 1 | -0.34 | 40 | -13.60 | | | Villoen, Sharise | | | 1162 | RSA | 0.00 | 1 | -0.90 | 40 | -36.00 | | | Michaels, Carla Jesse | | | 1216 | RSA | 1.00 | 1 | 0.14 | 40 | 5.60 | | | Van Den Berg, Ane | | | 1286 | RSA | 0.50 | 1 | -0.29 | 40 | -11.60 | | | * 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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