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Individual Calculations October 2017 |
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| Booysen, Willem-Hendrik Total change: -5.60 | |   |
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| 2017 Etienne Lewis Tshwane Chess Trails (Open) | Pretoria | RSA | 2017-08-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1615 | 1515 | 1.00 | 3 | -0.14 | 40 | -5.60 | |
|  Khumalo, Keith | | | 1779 | RSA | 0.00 | 1 | -0.18 | 40 | -7.20 | | | Van Der Westhuizen, Donald | | | 1690 | RSA | 0.00 | 1 | -0.27 | 40 | -10.80 | |  Van Heerden, Lara | | | 1375 | RSA | 1.00 | 1 | 0.31 | 40 | 12.40 | |
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) | | |
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