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Individual Calculations April 2018 |
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| Aitchison, A Keith Total change: -4.20 | |   |
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| Perth Congress 2018 Over-1500, Under-1900 | Perth | SCO | 2018-02-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1564 | 1682 | 3.00 | 5 | -0.21 | 20 | -4.20 | |
|  Tang, Liam | | | 1404 | SCO | 0.00 | 1 | -0.83 | 20 | -16.60 | |  Washington, Ian | | | 1447 | SCO | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Barron-Majerik, Jan | | | 1629 | SCO | 0.50 | 1 | -0.07 | 20 | -1.40 | | | Le Feuvre, Gwenole | | | 1467 | FRA | 1.00 | 1 | 0.23 | 20 | 4.60 | | | Lawson, Robert | | | 1872 | SCO | 0.50 | 1 | 0.25 | 20 | 5.00 | |
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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