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Individual Calculations September 2022 |
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| James, Geoffrey H Total change: -8.20 | |   |
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| Chessable British Chess Championships 2022: Over 65 | Torquay | ENG | 2022-08-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1977 | 2118 | 3.00 | 5 | -0.41 | 20 | -8.20 | |
|  Costello, Colin A | | | 1866 | ENG | 0.50 | 1 | -0.31 | 20 | -6.20 | | | Myall, Ivan J | | | 1983 | ENG | 1.00 | 1 | 0.32 | 20 | 6.40 | |  Norman, Kenneth I | c | | 2117 | ENG | 0.00 | 1 | -0.50 | 20 | -10.00 | | | De Coverly, Roger D | | | 1918 | ENG | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Bonafont, Philip R | | | 2001 | ENG | 0.50 | 1 | -0.16 | 20 | -3.20 | |
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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