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Individual Calculations January 2013 |
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| Buttell, David Total change: 4.65 | |   |
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| Welsh Chess Premier League Round 2 | Various | WLS | 2012-12-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1979 | 1815 | 0.50 | 1 | 0.22 | 15 | 3.30 | |
|  Fathallah, Joe | | | 1979 | WLS | 0.50 | 1 | 0.22 | 15 | 3.30 | |
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) | | | | London Chess Classic 2012: Weekend B U2000 | London | ENG | 2012-12-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1926 | 1815 | 1.50 | 4 | 0.09 | 15 | 1.35 | |
|  Hjort, Helge | | | 1956 | DEN | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Nwachukwu, Chino | | | 1974 | NGR | 1.00 | 1 | 0.71 | 15 | 10.65 | | | Jackson, Paul G | | | 1883 | ENG | 0.50 | 1 | 0.09 | 15 | 1.35 | | | Dixit, Kumar | | | 1891 | ENG | 0.00 | 1 | -0.40 | 15 | -6.00 | |
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) | | |
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