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Individual Calculations May 2018 |
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| O`brien, John P. Total change: 7.60 | |   |
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| Heidenfeld Trophy 2017-18 Rounds 9-10 | Various | IRL | 2018-03-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1743 | 1863 | 1.50 | 2 | 0.19 | 40 | 7.60 | |
|  Creighton, Terry | | | 1832 | IRL | 0.50 | 1 | -0.04 | 40 | -1.60 | |  Malone, Paul | | | 1654 | IRL | 1.00 | 1 | 0.23 | 40 | 9.20 | |
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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