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Individual Calculations October 2019 |
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| Lewis, Mark Mm. Total change: 13.80 | |   |
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| 2019 Chess Western Province League (Premier) | Cape Town | RSA | 2019-07-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1765 | 1957 | 4.00 | 5 | 0.34 | 20 | 6.80 | |
|  Booys, Leatin I. | | | 1557 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Pearson, Grahame | | | 1735 | RSA | 0.50 | 1 | -0.28 | 20 | -5.60 | | | Pick, Deon | | | 1835 | RSA | 0.50 | 1 | -0.17 | 20 | -3.40 | |  Moses, Rodwin | | | 1831 | RSA | 1.00 | 1 | 0.33 | 20 | 6.60 | | | Lynch, Justin | | | 1867 | RSA | 1.00 | 1 | 0.38 | 20 | 7.60 | | | * 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) | | | | 2019 Western Cape Closed Chess Championships (Elite) | Stellenbosch | RSA | 2019-09-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1729 | 1957 | 5.00 | 6 | 0.35 | 20 | 7.00 | |
| | Selkirk, Rebecca | | wc | 1803 | RSA | 1.00 | 1 | 0.29 | 20 | 5.80 | | | Van Niekerk, Robyn Julian | | | 1606 | RSA | 0.50 | 1 | -0.39 | 20 | -7.80 | | | Samuel, Caleb | c | | 1737 | RSA | 0.50 | 1 | -0.28 | 20 | -5.60 | | | Van Der Merwe, Alexander | | | 1612 | RSA | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Nevin, Tyler | | | 1708 | RSA | 1.00 | 1 | 0.19 | 20 | 3.80 | | | Baloyi, Siphiwe | | | 1906 | RSA | 1.00 | 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) | | |
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