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Individual Calculations April 2019 |
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| Mwale, Joseph Total change: 11.20 | |   |
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| 2019 Waterkloof Open (A) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1953 | 2270 | 3.00 | 4 | -0.43 | 20 | -8.60 | |
|  Oosthuizen, Michal Jacobus | | | 1870 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Louw, Gideon N. | | | 1870 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Zwakala, Ntando | | | 2054 | RSA | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Du Plessis, Heinco | | | 2017 | RSA | 0.00 | 1 | -0.81 | 20 | -16.20 | | | * 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) | | | | Moja Chess Club Open (A-Section) | Kimberley | RSA | 2019-03-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1969 | 2270 | 6.00 | 6 | 0.99 | 20 | 19.80 | |
| | Valashia, Itumeleng Houston | | | 1870 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Wasserman, Johan F. | | | 1870 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Acho, Christian | | | 1909 | RSA | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Mbedza, Richard | c | | 1917 | MAW | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Hercules, Benjamin Vincent | | | 2194 | RSA | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Zwakala, Ntando | | | 2054 | RSA | 1.00 | 1 | 0.22 | 20 | 4.40 | | | * 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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