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Individual Calculations September 2017 |
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| Patrick, David A Total change: 14.00 | |   |
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| 104th British Championships Weekend Open | Llandudno | ENG | 2017-07-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2023 | 1879 | 2.00 | 5 | 0.36 | 20 | 7.20 | |
|  Dargan, Paul Ag | c | | 2104 | ENG | 0.50 | 1 | 0.28 | 20 | 5.60 | |  Wells, Jonathan C | | | 2037 | ENG | 1.00 | 1 | 0.71 | 20 | 14.20 | | | Hanley, James L | | | 2238 | ENG | 0.00 | 1 | -0.10 | 20 | -2.00 | | | Cukovs, Oleg | | | 1876 | ENG | 0.00 | 1 | -0.50 | 20 | -10.00 | | | Tilston, Jamie D | | | 1861 | ENG | 0.50 | 1 | -0.03 | 20 | -0.60 | |
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) | | | | 104th British Championships Under 1900 | Llandudno | ENG | 2017-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1753 | 1879 | 3.00 | 4 | 0.34 | 20 | 6.80 | |
| | Cresswell, Mike J | | | 1698 | ENG | 0.50 | 1 | -0.24 | 20 | -4.80 | | | Pride, Stephen C | | | 1656 | ENG | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Jazdzewski, Daniel | | | 1808 | POL | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Chinguun, Otgonbayar | | | 1850 | MGL | 0.50 | 1 | -0.04 | 20 | -0.80 | |
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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