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Individual Calculations December 2017 |
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| Grigoryan, Meri Total change: 9.80 | |   |
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| 2017 Central London Chess Congress (Open Section) | London | ENG | 2017-11-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2029 | 2034 | 2.00 | 3 | 0.49 | 20 | 9.80 | |
|  Chrisidis, Pavlos | | | 1842 | GRE | 1.00 | 1 | 0.25 | 20 | 5.00 | |  Villiers, Thomas | | | 2157 | ENG | 1.00 | 1 | 0.67 | 20 | 13.40 | | | Mitra, Roman C | | | 2087 | ENG | 0.00 | 1 | -0.43 | 20 | -8.60 | |
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) | | |
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