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Individual Calculations May 2023 |
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| McKenna, John R Total change: -16.00 | |   |
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| Central London Chess Congress April 2023 - Major Under 2000 | London | ENG | 2023-04-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1472 | 1551 | 1.00 | 3 | -0.80 | 20 | -16.00 | |
|  Farahmandpour, Ehsan | | | 1481 | ENG | 0.00 | 1 | -0.60 | 20 | -12.00 | |  Medworth, Andrew | | | 1625 | ENG | 0.50 | 1 | 0.10 | 20 | 2.00 | | | Boozorginia, Zoya | | | 1311 | ENG | 0.50 | 1 | -0.30 | 20 | -6.00 | |
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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