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Individual Calculations July 2010 |
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| Tart, Peter K Total change: -65.80 | |   |
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| Four Nations Chess League (4NCL) | Various | ENG | 2009-10-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2084 | 2078 | 1.50 | 5 | -0.97 | 25 | -24.25 | |
|  Pleasants, Allan J | | | 2079 | ENG | 1.00 | 1 | 0.50 | 25 | 12.50 | | | Webster, Richard J | | | 1969 | ENG | 0.00 | 1 | -0.65 | 25 | -16.25 | |  Spencer, Carl J | | | 2136 | ENG | 0.00 | 1 | -0.42 | 25 | -10.50 | | | Bourne, Johnathan D | | | 2073 | ENG | 0.50 | 1 | -0.01 | 25 | -0.25 | | | Talbot, Andrew R | | | 2161 | ENG | 0.00 | 1 | -0.39 | 25 | -9.75 | |
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) | | | NOTE: K factor changed | | e2e4.org.uk Sunningdale Congress | Sunningdale, Berkshire | ENG | 2010-05-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1964 | 2014 | 0.00 | 5 | -2.77 | 15 | -41.55 | |
| | De Coverly, Roger D | | | 2116 | ENG | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Wilson, Alexandra | | wf | 2062 | SUI | 0.00 | 1 | -0.43 | 15 | -6.45 | | | Marsh, Roger D W | | | 2067 | ENG | 0.00 | 1 | -0.43 | 15 | -6.45 | | | Kane, Robert | | | 1882 | ENG | 0.00 | 1 | -0.68 | 15 | -10.20 | | | Wang, Maria | | | 1691 | ENG | 0.00 | 1 | -0.87 | 15 | -13.05 | |
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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