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Individual Calculations August 2017 |
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| Wilken, Justin Barend Total change: 33.40 | |   |
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| 5th Piet Van Zyl Chess Festival (A-Section) | Bloemfontein | RSA | 2017-07-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1959 | 1920 | 1.00 | 2 | 0.11 | 20 | 2.20 | |
|  Zwakala, Ntando | | | 2020 | RSA | 0.00 | 1 | -0.36 | 20 | -7.20 | |  Mpya, Tshediso M | | | 1897 | RSA | 1.00 | 1 | 0.47 | 20 | 9.40 | |
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 Open Chess Championships 2017 (A-Section) | Durban | RSA | 2017-07-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1918 | 1920 | 6.50 | 10 | 1.56 | 20 | 31.20 | |
| | Woolf, Charne | | wf | 1520 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Mnguni, Jacob Dumisani | | | 2147 | RSA | 0.00 | 1 | -0.21 | 20 | -4.20 | | | Puran, Ahdir | | | 1663 | RSA | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Mwale, Joseph | | | 2159 | MAW | 0.00 | 1 | -0.20 | 20 | -4.00 | | | Jacobs, Cavan | | | 1692 | RSA | 1.00 | 1 | 0.21 | 20 | 4.20 | | | De Abreu, Roberto N | f | | 2145 | RSA | 1.00 | 1 | 0.78 | 20 | 15.60 | | | Masango, Spencer | | | 2203 | ZIM | 0.00 | 1 | -0.16 | 20 | -3.20 | | | Essa, Naseem Ahmed | f | | 1682 | RSA | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Salimu, Reuben | | | 1968 | ZIM | 0.50 | 1 | 0.07 | 20 | 1.40 | | | Abrantes, Persson | c | | 2003 | MOZ | 1.00 | 1 | 0.61 | 20 | 12.20 | | | * 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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