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Individual Calculations February 2019 |
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| Waterfield, John W Total change: 14.60 | |   |
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| South Wales New Year Open 2019 | Bridgend | WLS | 2019-01-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1937 | 1920 | 3.00 | 4 | 1.10 | 20 | 22.00 | |
|  Chong, Kimberly | | | 1682 | WLS | 1.00 | 1 | 0.20 | 20 | 4.00 | |  Heap, Gerry | | | 2103 | WLS | 0.50 | 1 | 0.24 | 20 | 4.80 | | | Jukes, Sam | | | 1914 | WLS | 1.00 | 1 | 0.49 | 20 | 9.80 | | | Young, Alan | | | 2048 | WLS | 0.50 | 1 | 0.17 | 20 | 3.40 | |
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) | | | | Welsh Chess Premier League 2018/2019 Round 3 | Neath | WLS | 2019-01-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2016 | 1920 | 0.00 | 1 | -0.37 | 20 | -7.40 | |
| | Hewitt, William | | | 2016 | WLS | 0.00 | 1 | -0.37 | 20 | -7.40 | |
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) | | |
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