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Individual Calculations August 2017 |
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| Zwakala, Ntando Total change: -17.00 | |   |
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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 |
| 1854 | 2020 | 4.00 | 6 | -0.19 | 20 | -3.80 | |
|  Mashibini, Luyanda | | | 1632 | RSA | 1.00 | 1 | 0.09 | 20 | 1.80 | |  Sikwati, Lizo | | | 1717 | RSA | 1.00 | 1 | 0.14 | 20 | 2.80 | | | Wilken, Justin Barend | | | 1920 | RSA | 1.00 | 1 | 0.36 | 20 | 7.20 | | | Mpya, Tshediso M | | | 1897 | RSA | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Mafanya, Kulasande | | | 1883 | RSA | 0.50 | 1 | -0.18 | 20 | -3.60 | | | Mthunzi, Brighton | | | 2072 | RSA | 0.00 | 1 | -0.43 | 20 | -8.60 | |
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) | | | | South African Open Chess Championships 2017 (A-Section) | Durban | RSA | 2017-07-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1763 | 2020 | 8.00 | 11 | -0.66 | 20 | -13.20 | |
| | Phahlane, Lesiba Joel | | | 1620 * | RSA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Essa, Naseem Ahmed | f | | 1682 | RSA | 0.50 | 1 | -0.38 | 20 | -7.60 | | | Mahlangu, Sipho | | | 1739 | RSA | 0.50 | 1 | -0.34 | 20 | -6.80 | | | Nyathi, Musa | | | 1620 * | RSA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Mahomole, Mahlodi J. | | | 1676 | RSA | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Hattingh, Krishna | | | 1620 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Masiya, Mfundo | | | 1806 | RSA | 0.50 | 1 | -0.27 | 20 | -5.40 | | | Mazibuko, Khanya | c | | 1808 | RSA | 1.00 | 1 | 0.23 | 20 | 4.60 | | | Salimu, Reuben | | | 1968 | ZIM | 0.50 | 1 | -0.07 | 20 | -1.40 | | | Rooplal, Desmond | | | 1686 | RSA | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Pon, Matt | f | | 2163 | RSA | 1.00 | 1 | 0.69 | 20 | 13.80 | | | * 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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