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Individual Calculations December 2017 |
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| O`higgins, Niall Total change: 17.20 | |   |
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| Heidenfeld Trophy 2017-18 Rounds 1-2 | Various | IRL | 2017-09-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1631 | 1658 | 1.50 | 2 | 0.43 | 40 | 17.20 | |
|  Phelan, John J. | | | 1676 | IRL | 0.50 | 1 | 0.03 | 40 | 1.20 | |  O`gorman, Brian | | | 1586 | IRL | 1.00 | 1 | 0.40 | 40 | 16.00 | |
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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