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Individual Calculations September 2023 |
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| Boswell, Jacob Connor Total change: -0.40 | |   |
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| 2023 British Championship | Leicester | ENG | 2023-07-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2136 | 2163 | 4.50 | 8 | 0.20 | 20 | 4.00 | |
|  Grieve, Harry | m | | 2459 | ENG | 0.00 | 1 | -0.15 | 20 | -3.00 | |  Smith, Olivia | | wf | 2042 | WLS | 0.50 | 1 | -0.16 | 20 | -3.20 | | | Shearsby, Jude | | | 2076 | ENG | 0.50 | 1 | -0.12 | 20 | -2.40 | | | Koiza, Peter | | | 1963 | ENG | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Jackson, Edward | | | 1942 | ENG | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Derakhshani, Borna | f | | 2341 | ENG | 0.50 | 1 | 0.23 | 20 | 4.60 | | | Kanyamarala, Tarun | m | | 2344 | IRL | 0.00 | 1 | -0.26 | 20 | -5.20 | | | Weersing, Abigail Riis | | | 1919 | ENG | 1.00 | 1 | 0.20 | 20 | 4.00 | |
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) | | | | 2023 Newcastle-under-Lyme All-Play-All | Newcastle-under-Lyme | ENG | 2023-08-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2118 | 2226 | 6.00 | 9 | 0.18 | 20 | 3.60 | |
| | Lee, Richard W Y | | | 2094 | ENG | 0.00 | 1 | -0.68 | 20 | -13.60 | | | Kett, Tim | f | | 2072 | WLS | 1.00 | 1 | 0.29 | 20 | 5.80 | | | Blackburn, Jonathan L B | f | | 2197 | WLS | 0.50 | 1 | -0.04 | 20 | -0.80 | | | Brown, Thomas | | | 2108 | WLS | 1.00 | 1 | 0.34 | 20 | 6.80 | | | Okhai, Shabir | | | 2135 | ENG | 1.00 | 1 | 0.38 | 20 | 7.60 | | | Williamson, Roger G | | | 2177 | ENG | 0.50 | 1 | -0.07 | 20 | -1.40 | | | Morris, Charles F | | | 2060 | WLS | 0.00 | 1 | -0.72 | 20 | -14.40 | | | Byron, Alan M | | | 2155 | ENG | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Walton, Alan J | c | | 2063 | ENG | 1.00 | 1 | 0.28 | 20 | 5.60 | |
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) | | | | Northumbria Masters Open | Newcastle upon Tyne | ENG | 2023-08-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2151 | 2226 | 5.00 | 9 | -0.40 | 20 | -8.00 | |
| | Kett, Tim | f | | 2072 | WLS | 1.00 | 1 | 0.29 | 20 | 5.80 | | | Yoon, Jacob D | | | 2050 | ENG | 0.50 | 1 | -0.23 | 20 | -4.60 | | | Shearsby, Jude | | | 2053 | ENG | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Gormally, Daniel W | g | | 2447 | ENG | 0.00 | 1 | -0.22 | 20 | -4.40 | | | Arkell, Keith C | g | | 2373 | ENG | 0.50 | 1 | 0.20 | 20 | 4.00 | | | Sowray, Peter J | f | | 2151 | ENG | 0.00 | 1 | -0.60 | 20 | -12.00 | | | Chan, Sheng Liang Bernard | | | 2051 | MAS | 0.50 | 1 | -0.23 | 20 | -4.60 | | | Steadman, Michael V R | f | | 2100 | NZL | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Khoury, Theo | | | 2066 | ENG | 1.00 | 1 | 0.29 | 20 | 5.80 | |
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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