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Individual Calculations September 2018 |
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| Portman, Carl S Total change: -9.60 | |   |
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| 105th British Championships Weekend Open | Hull | ENG | 2018-07-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1891 | 1886 | 1.00 | 3 | -0.48 | 20 | -9.60 | |
|  Staples, Daniel J | | | 1981 | ENG | 0.00 | 1 | -0.37 | 20 | -7.40 | |  Gartside, Carl | | | 1828 | ENG | 0.50 | 1 | -0.08 | 20 | -1.60 | | | Graff, Ben | | | 1863 | ENG | 0.50 | 1 | -0.03 | 20 | -0.60 | |
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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