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Individual Calculations May 2011 |
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| Kett, Tim Total change: 9.00 | |   |
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| Welsh Chess Premier League | Various | WLS | 2010-11-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2222 | 2202 | 1.00 | 3 | -0.40 | 15 | -6.00 | |
|  Jones, Richard S. | f | | 2361 | WLS | 0.00 | 1 | -0.29 | 15 | -4.35 | | | Williams, A. Howard | f | | 2347 | WLS | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Cunliffe, Sd | | | 1958 | WLS | 1.00 | 1 | 0.20 | 15 | 3.00 | |
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) | | | | The 57th Welsh Chess Championships | Cardiff | WLS | 2011-04-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2194 | 2202 | 4.50 | 7 | 1.00 | 15 | 15.00 | |
|  Ralphs, Nigel | | | 1932 | WLS | 1.00 | 1 | 0.17 | 15 | 2.55 | | | Fathallah, Joe | | | 1906 | WLS | 1.00 | 1 | 0.15 | 15 | 2.25 | | | Zeidler, Sven P. | f | | 2247 | WLS | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Rees, Ioan | f | | 2319 | WLS | 1.00 | 1 | 0.66 | 15 | 9.90 | | | Williams, A. Howard | f | | 2347 | WLS | 0.50 | 1 | 0.19 | 15 | 2.85 | | | Jones, Richard S. | f | | 2369 | WLS | 1.00 | 1 | 0.72 | 15 | 10.80 | | | Sands, David A | | | 2238 | ENG | 0.00 | 1 | -0.45 | 15 | -6.75 | |
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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