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Individual Calculations February 2015 |
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| Rovaretti, David Total change: 12.80 | |   |
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| 2015 South Wales New Year Open | Bridgend | WLS | 2015-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1719 | 1643 | 2.00 | 4 | 0.32 | 40 | 12.80 | |
|  Waterfield, John W | | | 1962 | WLS | 0.50 | 1 | 0.37 | 40 | 14.80 | |  Lewis, David Rhys | | | 1933 | WLS | 0.00 | 1 | -0.16 | 40 | -6.40 | | | Di-Vetta, Andrew | | | 1585 | WLS | 0.50 | 1 | -0.08 | 40 | -3.20 | | | Lutchman Singh, Karanvir | | | 1397 | WLS | 1.00 | 1 | 0.19 | 40 | 7.60 | |
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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