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Individual Calculations September 2023 |
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| Collins, Nigel Total change: 1.80 | |   |
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| 2023 British Championship: Over 65 Championship | Leicester | ENG | 2023-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1834 | 1458 | 2.00 | 6 | 1.35 | 20 | 27.00 | |
|  Hawkins, James N H | | | 1910 | ENG | 0.50 | 1 | 0.44 | 20 | 8.80 | |  Campbell, Ian | | | 1952 | ENG | 0.50 | 1 | 0.46 | 20 | 9.20 | | | Stimpson, Philip M | | | 1894 | ENG | 0.00 | 1 | -0.06 | 20 | -1.20 | | | Tidmarsh, David A | | | 1761 | ENG | 0.50 | 1 | 0.36 | 20 | 7.20 | | | Erdogan, Hassan | | | 1829 | ENG | 0.50 | 1 | 0.40 | 20 | 8.00 | | | Daniels, David W | | | 1655 | ENG | 0.00 | 1 | -0.25 | 20 | -5.00 | |
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) | | | | East Midlands FIDE Congress 2023 - Under 1900 | Wellingborough | ENG | 2023-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1426 | 1374 | 1.50 | 4 | -0.21 | 20 | -4.20 | |
| | Chojnacki, M Kevin | | | 1418 | ENG | 0.00 | 1 | -0.44 | 20 | -8.80 | | | Strugar, Ioan-Euzeb | | | 1359 | ROU | 0.00 | 1 | -0.52 | 20 | -10.40 | | | Belur, Ankita | | | 1424 | ENG | 0.50 | 1 | 0.07 | 20 | 1.40 | | | Slonczuk, Pawel | | | 1504 | ENG | 1.00 | 1 | 0.68 | 20 | 13.60 | |
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) | | | | London Montague Congress - U1900 | London | ENG | 2023-08-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1499 | 1374 | 0.50 | 2 | -0.23 | 20 | -4.60 | |
| | Lake, Chris | | | 1694 | SRB | 0.00 | 1 | -0.13 | 20 | -2.60 | | | Thompson, David Nigel | | | 1304 | ENG | 0.50 | 1 | -0.10 | 20 | -2.00 | |
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) | | | | 57th Berks & Bucks Chess Congress - Challengers B | Maidenhead | ENG | 2023-08-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1482 | 1374 | 0.00 | 2 | -0.82 | 20 | -16.40 | |
| | Turner, David J | | | 1762 | ENG | 0.00 | 1 | -0.09 | 20 | -1.80 | | | Konara, Seha | | | 1201 | ENG | 0.00 | 1 | -0.73 | 20 | -14.60 | |
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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