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Individual Calculations December 2015 |
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| Lewis, David Rhys Total change: 32.60 | |   |
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| 48th West Wales Championship | Swansea | WLS | 2015-11-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1921 | 1912 | 3.50 | 4 | 1.63 | 20 | 32.60 | |
|  Williams, David J | | | 1550 | WLS | 1.00 | 1 | 0.10 | 20 | 2.00 | |  Bevan, Peter M | | | 2013 | WLS | 1.00 | 1 | 0.64 | 20 | 12.80 | | | Garcia, Jason | | | 2032 | WLS | 0.50 | 1 | 0.16 | 20 | 3.20 | | | Heap, Gerry | | | 2087 | WLS | 1.00 | 1 | 0.73 | 20 | 14.60 | |
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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