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Individual Calculations May 2023 |
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| Aiyyapan, Sudersen Total change: 43.60 | |   |
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| Coulsdon Chess Dicky White - April | London | ENG | 2023-04-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1215 | 1087 | 1.00 | 2 | 0.32 | 40 | 12.80 | |
|  Braithwaite, Paul | | | 1099 | ENG | 0.50 | 1 | 0.02 | 40 | 0.80 | |  Howes, David J | | | 1331 | ENG | 0.50 | 1 | 0.30 | 40 | 12.00 | |
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) | | | | Coulsdon Chess Standardplay Congress Easter 2023 - Minor (U1500) | Coulsdon | ENG | 2023-04-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1200 | 1087 | 1.50 | 2 | 0.77 | 40 | 30.80 | |
| | Belcher, Zachary | | | 1355 | ENG | 0.50 | 1 | 0.33 | 40 | 13.20 | | | Zhu, Limo | | | 1044 | ENG | 1.00 | 1 | 0.44 | 40 | 17.60 | |
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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