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Individual Calculations April 2020 |
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| Booysen, Willem Cornelius Total change: -28.00 | |   |
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| 2020 Waterkloof Open Chess Tournament (Section B) | Pretoria | RSA | 2020-02-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1196 | 1142 | 1.00 | 4 | -0.70 | 40 | -28.00 | |
|  Badenhorst, Nicolaas Jacobus | | | 1198 | RSA | 0.00 | 1 | -0.42 | 40 | -16.80 | |  De Swardt, Eduan | | | 1194 | RSA | 1.00 | 1 | 0.57 | 40 | 22.80 | | | Coetsee, Dewald | | | 1118 | RSA | 0.00 | 1 | -0.53 | 40 | -21.20 | | | Nzima, Nicolas | | | 1272 | RSA | 0.00 | 1 | -0.32 | 40 | -12.80 | |
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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