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Individual Calculations July 2010 |
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| Gibson, Christopher A Total change: 10.95 | |   |
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| Four Nations Chess League (4NCL) | Various | ENG | 2009-10-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1982 | 1970 | 3.00 | 5 | 0.59 | 15 | 8.85 | |
|  Andreev, Peter | | | 1895 | ENG | 0.50 | 1 | -0.10 | 15 | -1.50 | | | Elwin, Adrian G | | | 2013 | ENG | 1.00 | 1 | 0.56 | 15 | 8.40 | |  Rowe, Peter | | | 2039 | GCI | 0.50 | 1 | 0.10 | 15 | 1.50 | | | Dilleigh, Stephen P | | | 2120 | ENG | 0.50 | 1 | 0.20 | 15 | 3.00 | | | Gahir, Jasdeep | | | 1844 | ENG | 0.50 | 1 | -0.17 | 15 | -2.55 | |
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) | | | | Surrey Congress - Open | Cheam | ENG | 2010-04-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1999 | 1973 | 3.00 | 6 | 0.20 | 15 | 3.00 | |
| | Wheldon, Philip | | | 2133 | ENG | 0.00 | 1 | -0.29 | 15 | -4.35 | | | Foo, William J | | | 1818 | ENG | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Jackson, James P | | | 2102 | ENG | 0.50 | 1 | 0.17 | 15 | 2.55 | | | Fraser-Mitchell, Jeremy N | | | 1993 | ENG | 0.50 | 1 | 0.03 | 15 | 0.45 | | | Shepley, Julien M | | | 2022 | ENG | 0.00 | 1 | -0.43 | 15 | -6.45 | | | Clegg, Chris R A | | | 1924 | ENG | 1.00 | 1 | 0.43 | 15 | 6.45 | |
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.org.uk Sunningdale Congress | Sunningdale, Berkshire | ENG | 2010-05-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1958 | 1973 | 2.50 | 5 | -0.06 | 15 | -0.90 | |
| | Bonafont, Philip R | | | 2157 | ENG | 0.50 | 1 | 0.24 | 15 | 3.60 | | | Kirby, Peter J. | c | | 2065 | GCI | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Coates, David H | | | 2084 | ENG | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Brookfield, Toby | c | | 1791 | GCI | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Wang, Maria | | | 1691 | ENG | 0.50 | 1 | -0.34 | 15 | -5.10 | |
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) | | |
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