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Individual Calculations May 2011 |
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| Heap, Gerry Total change: 33.25 | |   |
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| Welsh Chess Premier League | Various | WLS | 2010-11-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2034 | 1954 | 2.50 | 4 | 0.94 | 25 | 23.50 | |
|  Robinson, David | | | 1965 | WLS | 1.00 | 1 | 0.52 | 25 | 13.00 | |  Miles, Richard | | | 2061 | WLS | 0.50 | 1 | 0.15 | 25 | 3.75 | | | Bennett, Alan | | | 2137 | WLS | 1.00 | 1 | 0.74 | 25 | 18.50 | | | Davis, Lee | | | 1974 | WLS | 0.00 | 1 | -0.47 | 25 | -11.75 | |
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) | | | | The 57th Welsh Chess Championships | Cardiff | WLS | 2011-04-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2075 | 1954 | 2.50 | 6 | 0.39 | 25 | 9.75 | |
| | Zeidler, Sven P. | f | | 2247 | WLS | 0.00 | 1 | -0.15 | 25 | -3.75 | | | Sands, David A | | | 2238 | ENG | 0.00 | 1 | -0.16 | 25 | -4.00 | | | Van Kemenade, Rudy | | | 1951 | WLS | 0.50 | 1 | 0.00 | 25 | 0.00 | | | Morris, Gareth | | | 2131 | WLS | 0.00 | 1 | -0.27 | 25 | -6.75 | | | White, Ernest M | | | 1952 | ENG | 1.00 | 1 | 0.50 | 25 | 12.50 | | | Ralphs, Nigel | | | 1932 | WLS | 1.00 | 1 | 0.47 | 25 | 11.75 | |
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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