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Individual Calculations April 2019 |
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| Mazibuko, Buhle Total change: -19.60 | |   |
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| 2019 Waterkloof Open (B) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1314 | 1390 | 0.50 | 3 | -1.31 | 40 | -52.40 | |
|  Makhura, Thabang | | | 1368 | RSA | 0.50 | 1 | -0.03 | 40 | -1.20 | |  Reyneke, Pieter | | | 1289 | RSA | 0.00 | 1 | -0.64 | 40 | -25.60 | | | Van Den Berg, Ane | | | 1286 | RSA | 0.00 | 1 | -0.64 | 40 | -25.60 | |
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) | | | | South African Junior Closed Chess Championships 2019 (u16 Open) | Benoni | RSA | 2019-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1519 | 1390 | 3.50 | 8 | 0.82 | 40 | 32.80 | |
| | De Jager, Andreas | c | | 1607 | RSA | 0.00 | 1 | -0.22 | 40 | -8.80 | | | Nhamuave, Eleazar | | | 1654 | RSA | 0.50 | 1 | 0.32 | 40 | 12.80 | | | Eaton, Dante | c | | 1629 | RSA | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Hlongwane, Blessing | | | 1363 | RSA | 0.00 | 1 | -0.54 | 40 | -21.60 | | | Thakersee, Rishay | c | | 1426 | RSA | 1.00 | 1 | 0.55 | 40 | 22.00 | | | Naidoo, Tashil | | | 1467 | RSA | 1.00 | 1 | 0.61 | 40 | 24.40 | | | Coetzee, Philip Paul | | | 1443 | RSA | 1.00 | 1 | 0.57 | 40 | 22.80 | | | Daniel, Angelo | | | 1564 | RSA | 0.00 | 1 | -0.27 | 40 | -10.80 | |
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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