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Individual Calculations September 2017 |
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| Donaghay, Richard H Total change: -17.20 | |   |
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| 104th British Championships Over 65 | Llandudno | ENG | 2017-07-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1875 | 1856 | 2.00 | 6 | -0.86 | 20 | -17.20 | |
|  Barton, R Alan | | | 2043 | ENG | 0.00 | 1 | -0.26 | 20 | -5.20 | |  Vickery, Jim E | | | 1953 | ENG | 0.50 | 1 | 0.13 | 20 | 2.60 | | | Cresswell, Mike J | | | 1698 | ENG | 0.50 | 1 | -0.21 | 20 | -4.20 | | | Kelly, Ian G | | | 2005 | ENG | 0.00 | 1 | -0.30 | 20 | -6.00 | | | Tidmarsh, David A | | | 1821 | ENG | 1.00 | 1 | 0.45 | 20 | 9.00 | | | Fisher, C Phillip | | | 1729 | ENG | 0.00 | 1 | -0.67 | 20 | -13.40 | |
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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