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Individual Calculations September 2015 |
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| Collins, Peter M Total change: -38.00 | |   |
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| 102nd British Chess Championships Over 50 | Coventry | ENG | 2015-08-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1977 | 2002 | 1.50 | 5 | -1.10 | 20 | -22.00 | |
|  Pitcher, John | | | 2251 | ENG | 0.00 | 1 | -0.19 | 20 | -3.80 | | | Botham, C Paul | | | 1996 | ENG | 0.50 | 1 | -0.01 | 20 | -0.20 | |  Bryant, Richard B E | | | 1947 | ENG | 0.50 | 1 | -0.08 | 20 | -1.60 | | | Horlock, Peter J | | | 1634 | ENG | 0.50 | 1 | -0.40 | 20 | -8.00 | | | Reuben, Stewart | c | | 2056 | ENG | 0.00 | 1 | -0.42 | 20 | -8.40 | |
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) | | | | 102nd British Chess Championships Week 2 AM Open | Coventry | ENG | 2015-08-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1848 | 2002 | 2.00 | 4 | -0.80 | 20 | -16.00 | |
| | Knight, Colin B | | | 1751 | ENG | 0.50 | 1 | -0.31 | 20 | -6.20 | | | Ramage, Colin R | | | 1908 | ENG | 0.50 | 1 | -0.13 | 20 | -2.60 | | | Pink, Joshua | | | 1816 | ENG | 0.00 | 1 | -0.74 | 20 | -14.80 | | | Graham, William M | | | 1916 | ENG | 1.00 | 1 | 0.38 | 20 | 7.60 | |
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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