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Individual Calculations October 2017 |
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| Buttell, David Total change: -40.40 | |   |
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| South Wales Summer Congress 2017 | Penarth | WLS | 2017-09-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1817 | 1817 | 0.00 | 4 | -2.02 | 20 | -40.40 | |
|  Brown, Thomas | | | 2020 | WLS | 0.00 | 1 | -0.24 | 20 | -4.80 | |  Jukes, Sam | | | 1733 | WLS | 0.00 | 1 | -0.62 | 20 | -12.40 | | | Williams, Stephen | | | 1666 | WLS | 0.00 | 1 | -0.70 | 20 | -14.00 | | | Cizek, Ondrej | | | 1847 | CZE | 0.00 | 1 | -0.46 | 20 | -9.20 | |
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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