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Individual Calculations July 2010 |
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| Davey, Mark Total change: -17.85 | |   |
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| Four Nations Chess League (4NCL) | Various | ENG | 2009-10-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2078 | 2020 | 0.50 | 4 | -1.19 | 15 | -17.85 | |
|  De Coverly, Roger D | | | 2101 | ENG | 0.00 | 1 | -0.39 | 15 | -5.85 | | | Purdon, Colin | | | 2102 | ENG | 0.50 | 1 | 0.11 | 15 | 1.65 | |  Wells, Daniel J | | | 2014 | ENG | 0.00 | 1 | -0.51 | 15 | -7.65 | | | Ackley, Peter J E | | | 2095 | ENG | 0.00 | 1 | -0.40 | 15 | -6.00 | |
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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