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Individual Calculations October 2017 |
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| James, Dai Total change: 3.40 | |   |
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| 3rd Welsh Seniors Championship | Penarth | WLS | 2017-09-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1859 | 1847 | 2.00 | 4 | 0.17 | 20 | 3.40 | |
|  Cox, John | | | 1447 * | WLS | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Reynolds, D Ian W | | | 2034 | ENG | 0.00 | 1 | -0.26 | 20 | -5.20 | | | Waterfield, John W | | | 1958 | WLS | 1.00 | 1 | 0.65 | 20 | 13.00 | | | Van Kemenade, Rudy | | | 1998 | WLS | 0.00 | 1 | -0.30 | 20 | -6.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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