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Individual Calculations April 2019 |
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| Sikwati, Lizo Total change: -29.80 | |   |
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| 2019 Waterkloof Open (A) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1503 | 1712 | 1.00 | 4 | -1.99 | 20 | -39.80 | |
|  Cruywagen, Armand | | | 1496 | RSA | 0.00 | 1 | -0.78 | 20 | -15.60 | |  Nguyen, Minh | | | 1312 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Nhamuave, Eleazar | | | 1654 | RSA | 0.00 | 1 | -0.58 | 20 | -11.60 | | | Prinsloo, Marthinus | | | 1550 | RSA | 0.00 | 1 | -0.71 | 20 | -14.20 | | | * 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 |
| 1873 | 1712 | 2.00 | 5 | 0.50 | 20 | 10.00 | |
| | Ruchaka, Kenneth | | | 1961 | ZIM | 1.00 | 1 | 0.81 | 20 | 16.20 | | | Mbedza, Richard | c | | 1917 | MAW | 0.00 | 1 | -0.24 | 20 | -4.80 | | | Acho, Christian | | | 1909 | RSA | 0.50 | 1 | 0.25 | 20 | 5.00 | | | Valashia, Itumeleng Houston | | | 1627 | RSA | 0.50 | 1 | -0.12 | 20 | -2.40 | | | Masiya, Mfundo | | | 1952 | RSA | 0.00 | 1 | -0.20 | 20 | -4.00 | |
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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