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Individual Calculations December 2021 |
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| Onslow, Alfie Total change: 13.20 | |   |
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| Central London Chess Congress - Open | London | ENG | 2021-11-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2044 | 2025 | 2.00 | 4 | 0.15 | 20 | 3.00 | |
|  Pattni, Kishan | | | 1625 * | ENG | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Poulton, James R | | | 2359 | ENG | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Finn, Peter | | | 2009 | ENG | 1.00 | 1 | 0.48 | 20 | 9.60 | | | Gray, Mark S | | | 2183 | ENG | 0.00 | 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) | | | | 2021/22 4NCL Division 1 & 2 Rounds 1-2 | Milton Keynes | ENG | 2021-11-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2220 | 2025 | 1.00 | 2 | 0.51 | 20 | 10.20 | |
| | Jones, Steven A | | | 2243 | ENG | 0.50 | 1 | 0.28 | 20 | 5.60 | | | Oyama, Akito | | | 2197 | ENG | 0.50 | 1 | 0.23 | 20 | 4.60 | |
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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