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Individual Calculations December 2017 |
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| Jackson, Peter D. Total change: -20.40 | |   |
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| Armstrong Cup 2017-18 Rounds 1-2 | Various | IRL | 2017-09-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2009 | 1907 | 0.00 | 1 | -0.36 | 20 | -7.20 | |
|  Macelligott, Gerard | c | | 2009 | IRL | 0.00 | 1 | -0.36 | 20 | -7.20 | |
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) | | | | Armstrong Cup 2017-18 Rounds 3-4 | Various | IRL | 2017-10-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1849 | 1907 | 0.50 | 2 | -0.66 | 20 | -13.20 | |
| | O`dwyer, Fergal | | | 1922 | IRL | 0.50 | 1 | 0.02 | 20 | 0.40 | | | Beatty, Ross | | | 1775 | IRL | 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) | | |
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