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Individual Calculations July 2010 |
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| Ruthen, Stephen W Total change: -27.50 | |   |
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| Four Nations Chess League (4NCL) | Various | ENG | 2009-10-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2021 | 2093 | 2.50 | 6 | -1.10 | 25 | -27.50 | |
|  McCullough, Simon L | | | 1986 | ENG | 0.00 | 1 | -0.65 | 25 | -16.25 | | | Levens, David G | | | 1986 | ENG | 0.00 | 1 | -0.65 | 25 | -16.25 | | | Armstrong, William G | | | 1966 | ENG | 1.00 | 1 | 0.33 | 25 | 8.25 | |  Trevelyan, John | | | 2166 | WLS | 1.00 | 1 | 0.60 | 25 | 15.00 | | | Waterfield, John W | | | 1988 | ENG | 0.00 | 1 | -0.64 | 25 | -16.00 | | | Duggan, Christopher | | | 2031 | ENG | 0.50 | 1 | -0.09 | 25 | -2.25 | |
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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