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Individual Calculations December 2015 |
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| Bridges, Paul Total change: 7.20 | |   |
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| Welsh Chess Premier League 2015/16 Round 1 | Various | WLS | 2015-11-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2171 | 1832 | 0.50 | 1 | 0.38 | 20 | 7.60 | |
|  Jones, Iolo C | f | | 2171 | WLS | 0.50 | 1 | 0.38 | 20 | 7.60 | |
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) | | | | 48th West Wales Championship | Swansea | WLS | 2015-11-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1817 | 1832 | 1.50 | 3 | -0.02 | 20 | -0.40 | |
| | Bevan, Peter M | | | 2013 | WLS | 0.00 | 1 | -0.26 | 20 | -5.20 | |  Williams, David J | | | 1550 | WLS | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Guy, David | | | 1887 | WLS | 0.50 | 1 | 0.08 | 20 | 1.60 | |
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) | | |
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