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Individual Calculations April 2019 |
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| Marais, Nina Total change: -82.40 | |   |
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| 2019 Waterkloof Open (A) | Pretoria | RSA | 2019-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1549 | 1712 | 2.50 | 5 | -1.07 | 40 | -42.80 | |
|  Tissot Van Patot, Anton | | | 1474 | RSA | 1.00 | 1 | 0.20 | 40 | 8.00 | |  Cruywagen, Armand | | | 1496 | RSA | 0.00 | 1 | -0.78 | 40 | -31.20 | | | Dykema, Dirkho | | | 1604 | RSA | 1.00 | 1 | 0.35 | 40 | 14.00 | | | Baloyi, Sipho | | | 1596 | RSA | 0.00 | 1 | -0.66 | 40 | -26.40 | | | Nkuna, Windsor | | | 1576 | RSA | 0.50 | 1 | -0.18 | 40 | -7.20 | |
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) | | | | South African Junior Closed Chess Championships 2019 (u18 Open) | Benoni | RSA | 2019-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1581 | 1712 | 5.00 | 9 | -0.99 | 40 | -39.60 | |
| | Martin, Nico | | | 1494 | RSA | 1.00 | 1 | 0.22 | 40 | 8.80 | | | Felix, Devon | | | 1627 | RSA | 0.00 | 1 | -0.62 | 40 | -24.80 | | | Naicker, Sheldon | | | 1312 * | RSA | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Van Der Westhuizen, Donald | | | 1582 | RSA | 0.00 | 1 | -0.68 | 40 | -27.20 | | | Richter, Jan-Michael | | | 1559 | RSA | 0.00 | 1 | -0.70 | 40 | -28.00 | | | Jacobs, Brandon Lee | | | 1528 | RSA | 1.00 | 1 | 0.26 | 40 | 10.40 | | | Fibiger, Jethro Nathanael | | | 1486 | RSA | 1.00 | 1 | 0.21 | 40 | 8.40 | | | Blomeyer, Chad | | | 1625 | RSA | 1.00 | 1 | 0.38 | 40 | 15.20 | | | Khumalo, Keith | | | 2015 | RSA | 0.00 | 1 | -0.14 | 40 | -5.60 | | | * 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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