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Individual Calculations May 2011 |
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| Davis, Lee Total change: 15.60 | |   |
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| Welsh Chess Premier League | Various | WLS | 2010-11-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2050 | 1974 | 3.50 | 5 | 1.51 | 15 | 22.65 | |
|  Adams, Mark | | | 2040 | WLS | 0.50 | 1 | 0.09 | 15 | 1.35 | | | Bennett, Alan | | | 2137 | WLS | 0.00 | 1 | -0.28 | 15 | -4.20 | | | Rees, Gwynfor | | | 2049 | WLS | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Brown, Thomas | | | 2070 | WLS | 1.00 | 1 | 0.63 | 15 | 9.45 | |  Heap, Gerry | | | 1954 | WLS | 1.00 | 1 | 0.47 | 15 | 7.05 | |
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) | | | | The 57th Welsh Chess Championships | Cardiff | WLS | 2011-04-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2048 | 1974 | 2.50 | 7 | -0.47 | 15 | -7.05 | |
| | Rees, Ioan | f | | 2319 | WLS | 0.50 | 1 | 0.39 | 15 | 5.85 | | | Jones, Richard S. | f | | 2369 | WLS | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Bullen, Alex | | | 1764 | WLS | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Thomas, James | | | 1839 | WLS | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Brown, Thomas | | | 2070 | WLS | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Young, Alan | | | 2024 | WLS | 0.00 | 1 | -0.43 | 15 | -6.45 | | | White, Ernest M | | | 1952 | ENG | 0.50 | 1 | -0.03 | 15 | -0.45 | |
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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