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Individual Calculations October 2017 |
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| Waterfield, John W Total change: -11.20 | |   |
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| 3rd Welsh Seniors Championship | Penarth | WLS | 2017-09-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1774 | 1958 | 3.00 | 5 | -0.56 | 20 | -11.20 | |
|  Probert, Malcolm | | | 1600 | WLS | 1.00 | 1 | 0.10 | 20 | 2.00 | |  Taylor, Robert Graham | | | 1929 | WLS | 0.50 | 1 | -0.04 | 20 | -0.80 | | | Davis, Lee | | | 1906 | WLS | 0.50 | 1 | -0.07 | 20 | -1.40 | | | James, Dai | | | 1847 | WLS | 0.00 | 1 | -0.65 | 20 | -13.00 | | | Hurn, Robert Aj | | | 1589 | WLS | 1.00 | 1 | 0.10 | 20 | 2.00 | |
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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