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Individual Calculations December 2018 |
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| Waterfield, John W Total change: 0.80 | |   |
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| Welsh Chess Premier League 2018/2019 Round 1 | Various | WLS | 2018-11-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1760 | 1929 | 0.50 | 1 | -0.22 | 20 | -4.40 | |
|  Sivarajasingam, Venetia | | wc | 1760 | WLS | 0.50 | 1 | -0.22 | 20 | -4.40 | |
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) | | | | 2018 South Wales Autumn Open | Newport | WLS | 2018-11-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1900 | 1929 | 3.00 | 5 | 0.26 | 20 | 5.20 | |
|  Toczek, Grzegorz | f | | 2263 | WLS | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Morgans, Justin | | | 1650 | WLS | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Whitehead, Mark A | | | 1922 | ENG | 0.00 | 1 | -0.51 | 20 | -10.20 | | | White, Ernest M | | | 1806 | WLS | 1.00 | 1 | 0.33 | 20 | 6.60 | | | Turner, Joseph David | | | 1860 | WLS | 1.00 | 1 | 0.40 | 20 | 8.00 | |
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) | | |
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