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Individual Calculations December 2017 |
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| Marais, Dawid Jacobus Total change: -25.60 | |   |
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| 2017 Gauteng North Open (A Section) | Pretoria | RSA | 2017-10-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1509 | 1373 | 1.00 | 5 | -0.64 | 40 | -25.60 | |
|  Richter, Jan-Michael | | | 1586 | RSA | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Lesuthu, Kali M. | | | 1548 | RSA | 0.00 | 1 | -0.27 | 40 | -10.80 | |  De Villiers, Anri | | | 1257 | RSA | 0.00 | 1 | -0.66 | 40 | -26.40 | | | De Villiers, Pieter | | | 1566 | RSA | 1.00 | 1 | 0.75 | 40 | 30.00 | | | Grobbelaar, Jacqui | | | 1587 | RSA | 0.00 | 1 | -0.23 | 40 | -9.20 | |
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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