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Individual Calculations April 2019 |
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| De Villiers, Anri Total change: -39.60 | |   |
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| 2019 Waterkloof Open (A) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1487 | 1360 | 2.00 | 5 | 0.19 | 40 | 7.60 | |
|  Rabiul, Bhuiyan | | | 1760 * | BAN | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Odendaal, Mikhal Marcus | | | 1188 | RSA | 1.00 | 1 | 0.27 | 40 | 10.80 | | | Fourie, Brandon | | | 1490 | RSA | 0.00 | 1 | -0.32 | 40 | -12.80 | | | Gardiner, Noa Saxon | | wf | 1321 | RSA | 1.00 | 1 | 0.45 | 40 | 18.00 | | | Oosthuizen, Michal Jacobus | | | 1678 | RSA | 0.00 | 1 | -0.13 | 40 | -5.20 | | | * 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) | | | | South African Junior Closed Chess Championships 2019 (u14 Girls) | Benoni | RSA | 2019-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1120 | 1360 | 2.00 | 4 | -1.18 | 40 | -47.20 | |
| | Wang, Pei-Shan | | | 1027 | RSA | 0.00 | 1 | -0.88 | 40 | -35.20 | | | Ismail, Imaan | | wc | 1146 | RSA | 0.50 | 1 | -0.27 | 40 | -10.80 | | | Claassen, Gabriella | | | 1161 | RSA | 0.50 | 1 | -0.26 | 40 | -10.40 | | | Weideman, Kayleigh | | | 1147 | RSA | 1.00 | 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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