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Individual Calculations April 2019 |
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| Bester, Ethan Total change: -102.40 | |   |
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| 2019 Waterkloof Open (B) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1233 | 1272 | 0.00 | 2 | -1.10 | 40 | -44.00 | |
|  Koning, Jaedin | | | 1336 | RSA | 0.00 | 1 | -0.41 | 40 | -16.40 | |  Malan, Aiden | | | 1130 | RSA | 0.00 | 1 | -0.69 | 40 | -27.60 | |
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 (u12 Open) | Benoni | RSA | 2019-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1123 | 1272 | 2.00 | 5 | -1.46 | 40 | -58.40 | |
| | Burgers, Adriaan | | | 1002 | RSA | 1.00 | 1 | 0.17 | 40 | 6.80 | | | Simpson, Michael | | | 1269 | RSA | 0.00 | 1 | -0.50 | 40 | -20.00 | | | Senekal, Frederick Petrus | | | 1156 | RSA | 0.00 | 1 | -0.66 | 40 | -26.40 | | | Fourie, Keanan | | | 1109 | RSA | 1.00 | 1 | 0.28 | 40 | 11.20 | | | Boshoma, Chifundo | | | 1078 | RSA | 0.00 | 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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