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Individual Calculations October 2017 |
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| Williams, Ron Total change: -10.80 | |   |
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| 3rd Welsh Seniors Championship | Penarth | WLS | 2017-09-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1688 | 1692 | 1.50 | 4 | -0.54 | 20 | -10.80 | |
|  Van Kemenade, Rudy | | | 1998 | WLS | 0.00 | 1 | -0.14 | 20 | -2.80 | |  Parsons, David Ivor | | | 1589 | WLS | 0.50 | 1 | -0.14 | 20 | -2.80 | | | Cox, John | | | 1430 | WLS | 0.00 | 1 | -0.82 | 20 | -16.40 | | | Greatorex, Roger | | | 1733 | ENG | 1.00 | 1 | 0.56 | 20 | 11.20 | |
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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