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Individual Calculations April 2020 |
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| Mlahleki, Vusimuzi Total change: -33.20 | |   |
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| Heidelberg Open (Prestige) | Heidelberg | RSA | 2020-01-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1895 | 2024 | 2.00 | 5 | -1.28 | 20 | -25.60 | |
|  Shlaka, Nizar | | | 1826 | LBA | 1.00 | 1 | 0.24 | 20 | 4.80 | |  Salem, Abdarahim | | | 1675 | RSA | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Smit, Devon | | | 1765 | RSA | 0.00 | 1 | -0.82 | 20 | -16.40 | | | Masiya, Mfundo | | | 1960 | RSA | 0.00 | 1 | -0.59 | 20 | -11.80 | | | Mwale, Joseph | f | | 2249 | MAW | 0.00 | 1 | -0.22 | 20 | -4.40 | |
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) | | | | 2020 Waterkloof Open Chess Tournament (Section A) | Pretoria | RSA | 2020-02-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1747 | 2014 | 3.50 | 5 | -0.38 | 20 | -7.60 | |
| | Grobbelaar-Oertel, Jacqui | | | 1614 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Claassen, Jean-Daniel | | | 1614 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Mwale, Joseph | f | | 2206 | MAW | 0.00 | 1 | -0.25 | 20 | -5.00 | | | Govender, Shevern | | | 1614 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Simpson, Michael | | | 1687 | RSA | 0.50 | 1 | -0.37 | 20 | -7.40 | | | * 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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