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Individual Calculations March 2013 |
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| Buttell, David Total change: -3.60 | |   |
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| Imperial College Congress Major Feb 2013 | London | ENG | 2013-02-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1698 | 1820 | 3.00 | 4 | 0.37 | 15 | 5.55 | |
|  Falasca, Marco | | | 1575 | ITA | 1.00 | 1 | 0.20 | 15 | 3.00 | | | Norman, Nigel | | | 1757 | ENG | 0.50 | 1 | -0.09 | 15 | -1.35 | |  Dybowski, Artur | | | 1643 | POL | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Clayton, Tristan | | | 1815 | ENG | 0.50 | 1 | -0.01 | 15 | -0.15 | |
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) | | | | South Wales all play all Section C | Cardiff | WLS | 2013-02-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1808 | 1820 | 2.00 | 6 | -1.08 | 15 | -16.20 | |
| | Thomas, Ben | | | 1690 | WLS | 0.00 | 1 | -0.68 | 15 | -10.20 | | | Woolcock, Craig | | | 1852 | WLS | 0.00 | 1 | -0.46 | 15 | -6.90 | | | Du Toit, Stephanie | | | 1549 | WLS | 1.00 | 1 | 0.17 | 15 | 2.55 | | | Bridges, Paul | | | 1859 | WLS | 0.50 | 1 | 0.05 | 15 | 0.75 | | | Staniforth, Matthew | | | 1972 | WLS | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Ralphs, Nigel | | | 1925 | WLS | 0.50 | 1 | 0.14 | 15 | 2.10 | |
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) | | | | Welsh Chess Premier League Round 4 | various | WLS | 2013-02-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1797 | 1820 | 1.00 | 1 | 0.47 | 15 | 7.05 | |
| | Gilbert, Colin | | | 1797 | 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) | | |
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