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Individual Calculations September 2023 |
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| Surtees, Mike J Total change: -12.60 | |   |
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| 2023 British Championship: Over 65 Championship | Leicester | ENG | 2023-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1982 | 2059 | 3.00 | 6 | -0.61 | 20 | -12.20 | |
|  Scowen, Roger S | | | 1831 | ENG | 1.00 | 1 | 0.21 | 20 | 4.20 | |  Stimpson, Philip M | | | 1894 | ENG | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Lawson, Maurice E | | | 1972 | ENG | 1.00 | 1 | 0.38 | 20 | 7.60 | | | Chapman, Terry P D | f | | 2248 | ENG | 0.00 | 1 | -0.25 | 20 | -5.00 | | | De Coverly, Roger D | | | 1955 | ENG | 0.00 | 1 | -0.64 | 20 | -12.80 | | | Moore, Geoffrey R | | | 1994 | ENG | 0.00 | 1 | -0.59 | 20 | -11.80 | |
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) | | | | Manchester Summer Chess Congress August 2023 | Bolton | ENG | 2023-08-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1824 | 2059 | 2.50 | 4 | -0.61 | 20 | -12.20 | |
| | Obi, Marc On | | | 1795 | ENG | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Jackson, Edward | | | 1942 | ENG | 0.50 | 1 | -0.16 | 20 | -3.20 | | | Vijayakumar, Rishi | | | 1899 | SCO | 0.00 | 1 | -0.71 | 20 | -14.20 | | | Ashton, Alannah | | | 1659 * | ENG | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * 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) | | | | 15th Leyland Congress | Leyland | ENG | 2023-08-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1884 | 2059 | 3.50 | 4 | 0.59 | 20 | 11.80 | |
| | Pink, Joshua | | | 1890 | ENG | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Hepworth, Peter | | | 1827 | ENG | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Vijayakumar, Rishi | | | 1899 | SCO | 0.50 | 1 | -0.21 | 20 | -4.20 | | | Samarasinghe Jude, Ranga | | | 1921 | SRI | 1.00 | 1 | 0.31 | 20 | 6.20 | |
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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