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Individual Calculations May 2023 |
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| Darville, Matt Total change: 2.40 | |   |
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| Coulsdon Chess Dicky White - April | London | ENG | 2023-04-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1634 | 1668 | 1.00 | 2 | -0.09 | 20 | -1.80 | |
|  Chaban, Roxolana | | | 1543 | ENG | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Odunaiya, Victor | | | 1724 | ENG | 0.50 | 1 | 0.08 | 20 | 1.60 | |
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) | | | | Coulsdon Chess Standardplay Congress Easter 2023 - Open | Coulsdon | ENG | 2023-04-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1814 | 1668 | 1.00 | 2 | 0.21 | 20 | 4.20 | |
| | Lalic, Peter D | c | | 2145 | ENG | 0.50 | 1 | 0.45 | 20 | 9.00 | |  Hayes, Callum | | | 1482 | ENG | 0.50 | 1 | -0.24 | 20 | -4.80 | |
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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