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Individual Calculations October 2018 |
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| Marais, Alwyn Johannes Total change: -15.20 | |   |
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| 2018 Tshwane Chess Etienne Lewis Trials (U14 Boys) | Pretoria | RSA | 2018-08-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1225 | 1293 | 2.00 | 4 | -0.38 | 40 | -15.20 | |
|  Smit, Yoshua | | | 1107 | RSA | 1.00 | 1 | 0.26 | 40 | 10.40 | |  Odendaal, Mikhal Marcus | | | 1090 | RSA | 0.00 | 1 | -0.76 | 40 | -30.40 | | | Ristic, Andrej | | | 1124 | RSA | 1.00 | 1 | 0.28 | 40 | 11.20 | | | Oosthuizen, Michal Jacobus | | | 1578 | RSA | 0.00 | 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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