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Individual Calculations April 2019 |
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| Boshoma, Chifundo Total change: -22.40 | |   |
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| 2019 Waterkloof Open (B) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1123 | 1078 | 0.00 | 2 | -0.88 | 40 | -35.20 | |
|  Huisamen, Botha Brandt | | | 1094 | RSA | 0.00 | 1 | -0.48 | 40 | -19.20 | | | Lodi, Khotso | | | 1152 | RSA | 0.00 | 1 | -0.40 | 40 | -16.00 | |
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) | | | | South African Junior Closed Chess Championships 2019 (u12 Open) | Benoni | RSA | 2019-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1126 | 1078 | 2.50 | 5 | 0.32 | 40 | 12.80 | |
|  Liang, Yi-Tao | | | 1061 | RSA | 0.50 | 1 | -0.02 | 40 | -0.80 | | | Arjun, Sopanam Prabha | | | 1004 | RSA | 1.00 | 1 | 0.40 | 40 | 16.00 | | | Palmer, Reegan | | | 1128 | RSA | 0.00 | 1 | -0.43 | 40 | -17.20 | | | Potgieter, Edward | | | 1165 | RSA | 0.00 | 1 | -0.38 | 40 | -15.20 | | | Bester, Ethan | | | 1272 | RSA | 1.00 | 1 | 0.75 | 40 | 30.00 | |
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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