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Individual Calculations August 2018 |
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| Selkirk, Rebecca Total change: -43.40 | |   |
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| 2018 South African Open Chess Championships (A-Section) | Bloemfontein | RSA | 2018-07-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1693 | 1776 | 4.50 | 11 | -2.17 | 20 | -43.40 | |
|  Swart, George | | | 1512 | RSA | 1.00 | 1 | 0.18 | 20 | 3.60 | |  Mthabisi, Sibanda | | | 1376 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Odendaal, Frederick | | | 2021 | RSA | 0.50 | 1 | 0.30 | 20 | 6.00 | | | Oatlhotse, Providence | m | | 2176 * | BOT | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Mantati, Victor S | | | 1565 | RSA | 0.00 | 1 | -0.77 | 20 | -15.40 | | | Mashibini, Luyanda | | | 1646 | RSA | 1.00 | 1 | 0.32 | 20 | 6.40 | | | Vermeulen, George Barrett | | | 1662 | RSA | 0.50 | 1 | -0.16 | 20 | -3.20 | | | Mmoneng, Patrick L. | | | 1839 | RSA | 0.00 | 1 | -0.41 | 20 | -8.20 | | | Manaba, Thembani | | | 1664 | RSA | 0.50 | 1 | -0.15 | 20 | -3.00 | | | Sikwati, Lizo | | | 1681 | RSA | 0.00 | 1 | -0.63 | 20 | -12.60 | | | Oosthuizen, Michal Jacobus | | | 1481 | RSA | 0.00 | 1 | -0.85 | 20 | -17.00 | | | * 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) | | |
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