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Individual Calculations December 2015 |
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| Buttell, David Total change: -4.80 | |   |
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| 48th West Wales Championship | Swansea | WLS | 2015-11-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1853 | 1805 | 1.50 | 4 | -0.24 | 20 | -4.80 | |
|  Davis, Lee | | | 1994 | WLS | 0.00 | 1 | -0.25 | 20 | -5.00 | |  Turner, Joseph David | | | 1926 | WLS | 0.50 | 1 | 0.16 | 20 | 3.20 | | | May, Adam J | | | 1903 | WLS | 0.00 | 1 | -0.37 | 20 | -7.40 | | | Di-Vetta, Andrew | | | 1587 | WLS | 1.00 | 1 | 0.22 | 20 | 4.40 | |
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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