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Individual Calculations February 2023 |
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| Williamson, Roger G Total change: -27.80 | |   |
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| London Christmas Chess Congress - Open | London | ENG | 2022-12-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1858 | 2205 | 2.50 | 4 | -1.05 | 20 | -21.00 | |
|  Pert, Nina | | | 1846 | ENG | 1.00 | 1 | 0.10 | 20 | 2.00 | |  Saidmurodov, Shahjahon | | | 1883 | ENG | 0.50 | 1 | -0.37 | 20 | -7.40 | | | Bharat Kumar, Balahari | | | 1805 * | ENG | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Arora, Tashika | | | 1896 | ENG | 0.50 | 1 | -0.36 | 20 | -7.20 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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) | | | | 29th 4NCL Congress Open | Harrogate | ENG | 2023-01-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1915 | 2205 | 3.00 | 4 | -0.34 | 20 | -6.80 | |
| | Doran, Chris | | | 1917 | ENG | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Longson, Sarah N | | wf | 2030 | ENG | 0.50 | 1 | -0.23 | 20 | -4.60 | | | Shearsby, Jude | | | 1906 | ENG | 0.50 | 1 | -0.35 | 20 | -7.00 | | | Kryshtafor, Maksym | | | 1805 * | UKR | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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