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Individual Calculations June 2013 |
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| Bullen, Alex Total change: 48.30 | |   |
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| 4NCL 2012-13 | Various | ENG | 2012-11-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1973 | 1824 | 4.50 | 8 | 1.96 | 15 | 29.40 | |
|  Lettington, David | | | 1726 | ENG | 1.00 | 1 | 0.37 | 15 | 5.55 | |  Portman, Carl | | | 1942 | ENG | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Girdlestone, Paul C | | | 2166 | ENG | 0.50 | 1 | 0.38 | 15 | 5.70 | | | Wallis, Ian J | | | 2021 | ENG | 0.50 | 1 | 0.25 | 15 | 3.75 | | | Waterfield, John W | | | 2013 | ENG | 0.50 | 1 | 0.25 | 15 | 3.75 | | | Peck, Windsor Wa | | | 1817 | ENG | 1.00 | 1 | 0.49 | 15 | 7.35 | | | Davey, Mark | | | 1990 | ENG | 1.00 | 1 | 0.72 | 15 | 10.80 | | | Brett, Andrew R | | | 2105 | ENG | 0.00 | 1 | -0.16 | 15 | -2.40 | |
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 6-7 | various | WLS | 2013-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1838 | 1911 | 1.50 | 2 | 0.30 | 15 | 4.50 | |
| | Howell, Alun | | | 1794 | WLS | 1.00 | 1 | 0.34 | 15 | 5.10 | | | Gibbons, Andrew | | | 1881 | WLS | 0.50 | 1 | -0.04 | 15 | -0.60 | |
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 3 | Various | WLS | 2013-05-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1994 | 1906 | 0.50 | 1 | 0.12 | 15 | 1.80 | |
| | Heap, Gerry | | | 1994 | WLS | 0.50 | 1 | 0.12 | 15 | 1.80 | |
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) | | | | e2e4 Sunningdale U2050 May 2013 | Sunningdale | ENG | 2013-05-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1956 | 1906 | 3.00 | 5 | 0.84 | 15 | 12.60 | |
| | Peck, Silas | | | 1713 | ENG | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Cairns, Stephen | | | 2041 | ENG | 0.50 | 1 | 0.18 | 15 | 2.70 | | | James, Angus S | | | 1959 | ENG | 1.00 | 1 | 0.57 | 15 | 8.55 | | | De Coverly, Roger D | | | 2019 | ENG | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Stimpson, Philip M | | | 2048 | ENG | 0.50 | 1 | 0.19 | 15 | 2.85 | |
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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