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Individual Calculations December 2021 |
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| Gray, Mark S Total change: -27.80 | |   |
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| Coulsdon Chess Dicky White S3 NOV 2020 | London | ENG | 2021-11-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1877 | 2183 | 0.50 | 2 | -1.19 | 20 | -23.80 | |
|  Rizvi, Nasir | | | 1970 | WLS | 0.50 | 1 | -0.27 | 20 | -5.40 | |  Smith, Mark | | | 1783 * | ENG | 0.00 | 1 | -0.92 | 20 | -18.40 | | | * 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) | | | | Central London Chess Congress - Open | London | ENG | 2021-11-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1971 | 2183 | 3.50 | 5 | -0.20 | 20 | -4.00 | |
| | Lundback, Anders | | | 1841 | SWE | 0.50 | 1 | -0.38 | 20 | -7.60 | | | Tivillier, Jacques | | | 1783 * | ENG | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Sagues, Vincent | | | 1970 | FRA | 1.00 | 1 | 0.23 | 20 | 4.60 | | | Hill, Alistair | | | 2237 | ENG | 0.00 | 1 | -0.42 | 20 | -8.40 | | | Onslow, Alfie | | | 2025 | ENG | 1.00 | 1 | 0.29 | 20 | 5.80 | | | * 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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