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Individual Calculations April 2019 |
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| Van Heerden, Lara Total change: -104.40 | |   |
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| 2019 Waterkloof Open (A) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1422 | 1376 | 0.00 | 4 | -1.78 | 40 | -71.20 | |
|  Bucceri, Draven | | | 1620 | RSA | 0.00 | 1 | -0.20 | 40 | -8.00 | |  Nkuna, Windsor | | | 1576 | RSA | 0.00 | 1 | -0.24 | 40 | -9.60 | | | Bester, Carla | | | 1171 | RSA | 0.00 | 1 | -0.76 | 40 | -30.40 | | | Lubbe, David Stefanus | | | 1322 | RSA | 0.00 | 1 | -0.58 | 40 | -23.20 | |
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 |
| 1289 | 1376 | 4.00 | 8 | -0.83 | 40 | -33.20 | |
| | Michaels, Carla Jesse | | | 1216 | RSA | 1.00 | 1 | 0.29 | 40 | 11.60 | | | Wolmarans, Riekie | | | 1520 | RSA | 0.00 | 1 | -0.31 | 40 | -12.40 | | | Van Den Berg, Ane | | | 1286 | RSA | 0.00 | 1 | -0.62 | 40 | -24.80 | | | Swart, Sune | | | 1102 | RSA | 1.00 | 1 | 0.17 | 40 | 6.80 | | | Saayman, Anais | | | 1219 | RSA | 0.50 | 1 | -0.21 | 40 | -8.40 | | | Emanuel, Prithee | | | 1056 | RSA | 1.00 | 1 | 0.13 | 40 | 5.20 | | | Engelbrecht, Hanri | | wf | 1421 | RSA | 0.00 | 1 | -0.44 | 40 | -17.60 | | | Booysen, Elda | | wc | 1493 | RSA | 0.50 | 1 | 0.16 | 40 | 6.40 | |
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) | | |
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