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Individual Calculations October 2019 |
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| De Vries, Matthys Andrio Total change: -3.20 | |   |
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| 2019 Tshwane Chess Etienne Lewis Trials (U12 Boys) | Pretoria | RSA | 2019-09-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1121 | 1016 | 1.00 | 3 | -0.08 | 40 | -3.20 | |
|  Malan, Henco | | | 1046 | RSA | 0.50 | 1 | 0.04 | 40 | 1.60 | |  Koning, Lehan | | | 1134 | RSA | 0.00 | 1 | -0.34 | 40 | -13.60 | | | Senekal, Frederick Petrus | | | 1183 | RSA | 0.50 | 1 | 0.22 | 40 | 8.80 | |
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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