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Individual Calculations March 2015 |
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| Hurn, Robert Aj Total change: -21.00 | |   |
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| 2015 Welsh Winter Open | Penarth | WLS | 2015-01-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1815 | 1717 | 0.00 | 3 | -1.14 | 20 | -22.80 | |
|  Hatchett, Paul | | | 1971 | WLS | 0.00 | 1 | -0.19 | 20 | -3.80 | | | Williams, Stephen | | | 1890 | WLS | 0.00 | 1 | -0.27 | 20 | -5.40 | |  Di-Vetta, Andrew | | | 1585 | WLS | 0.00 | 1 | -0.68 | 20 | -13.60 | |
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) | | | | 44th Dyfed Chess Congress | Goodwick | WLS | 2015-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1964 | 1702 | 0.50 | 2 | 0.09 | 20 | 1.80 | |
| | Richmond, Jane | | wf | 2100 | WLS | 0.50 | 1 | 0.42 | 20 | 8.40 | | | Reid, Vaness | | wf | 1828 | AUS | 0.00 | 1 | -0.33 | 20 | -6.60 | |
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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