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Individual Calculations April 2019 |
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| Du Plessis, Jan Total change: 224.80 | |   |
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| 2019 Waterkloof Open (A) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1630 | 1406 | 3.00 | 4 | 2.01 | 40 | 80.40 | |
|  Govender, Shevern | | | 1371 | RSA | 1.00 | 1 | 0.45 | 40 | 18.00 | |  Govender, Yaduvir | | | 1627 | RSA | 1.00 | 1 | 0.78 | 40 | 31.20 | | | Mthunzi, Brighton | | | 1806 * | RSA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Mndaweni, Mfanafuthi D | | | 1715 | RSA | 1.00 | 1 | 0.86 | 40 | 34.40 | | | * 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) | | | | South African Junior Closed Chess Championships 2019 (u18 Open) | Benoni | RSA | 2019-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1611 | 1406 | 6.00 | 9 | 3.61 | 40 | 144.40 | |
| | Jacobs, Brandon Lee | | | 1528 | RSA | 1.00 | 1 | 0.67 | 40 | 26.80 | | | Khumalo, Keith | | | 1806 * | RSA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Martin, Nico | | | 1494 | RSA | 1.00 | 1 | 0.62 | 40 | 24.80 | | | Jack, Azile | | | 1364 | RSA | 1.00 | 1 | 0.44 | 40 | 17.60 | | | Samuels, Ethan | | | 1806 * | RSA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Fibiger, Jethro Nathanael | | | 1486 | RSA | 1.00 | 1 | 0.61 | 40 | 24.40 | | | Mazibuko, Khanya | c | | 1806 * | RSA | 1.00 | 1 | 0.92 | 40 | 36.80 | | | Van Der Westhuizen, Donald | | | 1582 | RSA | 0.50 | 1 | 0.23 | 40 | 9.20 | | | Felix, Devon | | | 1627 | RSA | 0.50 | 1 | 0.28 | 40 | 11.20 | | | * 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) | | |
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