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Individual Calculations December 2017 |
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| Grobbelaar, Jacqui Total change: -20.60 | |   |
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| 2017 Gauteng North Open (A Section) | Pretoria | RSA | 2017-10-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1499 | 1587 | 2.00 | 5 | -1.03 | 20 | -20.60 | |
|  Bekker, Luan | | | 1223 | RSA | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Zwakala, Ntando | | | 1987 * | RSA | 0.00 | 1 | -0.08 | 20 | -1.60 | |  Jacobs, Cavan | | | 1657 | RSA | 0.00 | 1 | -0.40 | 20 | -8.00 | | | De Villiers, Anri | | | 1257 | RSA | 0.00 | 1 | -0.88 | 20 | -17.60 | | | Marais, Dawid Jacobus | | | 1373 | RSA | 1.00 | 1 | 0.23 | 20 | 4.60 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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