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Individual Calculations May 2011 |
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| Williams, A. Howard Total change: 6.30 | |   |
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| Welsh Chess Premier League | Various | WLS | 2010-11-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2217 | 2347 | 3.00 | 4 | 0.35 | 15 | 5.25 | |
|  Gilbert, Jonathan A. | | | 2057 | WLS | 1.00 | 1 | 0.16 | 15 | 2.40 | |  Zeidler, Sven P. | f | | 2247 | WLS | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Kett, Tim | | | 2202 | WLS | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Jones, Richard S. | f | | 2361 | WLS | 0.00 | 1 | -0.48 | 15 | -7.20 | |
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) | | | | The 57th Welsh Chess Championships | Cardiff | WLS | 2011-04-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2118 | 2347 | 5.50 | 7 | 0.07 | 15 | 1.05 | |
| | Garcia, Jason | | | 2010 | WLS | 1.00 | 1 | 0.12 | 15 | 1.80 | | | Lexton, Michael J | | | 2052 | WLS | 0.50 | 1 | -0.35 | 15 | -5.25 | | | Young, Alan | | | 2024 | WLS | 1.00 | 1 | 0.13 | 15 | 1.95 | | | Sands, David A | | | 2238 | ENG | 0.50 | 1 | -0.15 | 15 | -2.25 | | | Kett, Tim | | | 2202 | WLS | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Zeidler, Sven P. | f | | 2247 | WLS | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Pleasants, Allan J | | | 2056 | WLS | 1.00 | 1 | 0.15 | 15 | 2.25 | |
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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