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Individual Calculations December 2017 |
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| O`dwyer, Fergal Total change: 21.20 | |   |
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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 |
| 1930 | 1922 | 1.00 | 1 | 0.51 | 20 | 10.20 | |
|  Artola, Gerardo | | | 1930 | ARG | 1.00 | 1 | 0.51 | 20 | 10.20 | |
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 |
| 1938 | 1922 | 1.50 | 2 | 0.55 | 20 | 11.00 | |
| | Jackson, Peter D. | | | 1907 | IRL | 0.50 | 1 | -0.02 | 20 | -0.40 | |  Casey, Eoghan | | | 1969 | IRL | 1.00 | 1 | 0.57 | 20 | 11.40 | |
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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