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Individual Calculations April 2020 |
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| Ngubeni, Jackie M. Total change: 123.60 | |   |
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| Heidelberg Open (A) | Heidelberg | RSA | 2020-01-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1577 | 1272 | 2.00 | 2 | 1.71 | 40 | 68.40 | |
|  Kheswa, Itumeleng | | | 1600 | RSA | 1.00 | 1 | 0.87 | 40 | 34.80 | |  Lesuthu, Kali M. | | | 1553 | RSA | 1.00 | 1 | 0.84 | 40 | 33.60 | |
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 |
| 1591 | 1272 | 2.00 | 5 | 1.18 | 40 | 47.20 | |
| | Smit, Devon | | | 1672 * | RSA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Gandawa, Fortune | | | 1672 * | RSA | 1.00 | 1 | 0.92 | 40 | 36.80 | | | Dinham, James | | | 1672 * | RSA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Nene, Themba | | | 1672 * | RSA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Bester, Carla | | | 1269 | RSA | 1.00 | 1 | 0.50 | 40 | 20.00 | | | * 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) | | | | Boardwalk Pearson Open Chess Tournament 2020 (Indiv Swiss) | Port Elizabeth | RSA | 2020-03-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1344 | 1272 | 1.00 | 2 | 0.20 | 40 | 8.00 | |
| | Manto, Martha | | | 1323 | RSA | 1.00 | 1 | 0.57 | 40 | 22.80 | | | Peter, Neathan | c | | 1364 | RSA | 0.00 | 1 | -0.37 | 40 | -14.80 | |
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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