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Individual Calculations October 2021 |
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| O`cuilleanain, Oisin Total change: 38.00 | |   |
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| The 100th Irish Championships 2021 Weekday Open | Dublin | IRL | 2021-08-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1627 | 1662 | 3.00 | 4 | 0.82 | 40 | 32.80 | |
|  Harrington, Eoin | | | 1587 | IRL | 1.00 | 1 | 0.40 | 40 | 16.00 | |  Lynch, Peter J. | | | 1661 | IRL | 1.00 | 1 | 0.50 | 40 | 20.00 | | | Murray, Benjamin | | | 1709 | IRL | 0.00 | 1 | -0.43 | 40 | -17.20 | | | Armstrong, Chris | | | 1550 | IRL | 1.00 | 1 | 0.35 | 40 | 14.00 | |
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) | | | | The 100th Irish Championships 2021 Final Weekender | Dublin | IRL | 2021-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1585 | 1662 | 2.50 | 4 | 0.13 | 40 | 5.20 | |
| | Carolan, James | | | 1339 | IRL | 1.00 | 1 | 0.13 | 40 | 5.20 | | | Burke, Kevin A. | | | 1883 | IRL | 0.00 | 1 | -0.22 | 40 | -8.80 | | | Kirulis, Edgars | | | 1586 | IRL | 1.00 | 1 | 0.40 | 40 | 16.00 | | | Hackett, William | | | 1530 | IRL | 0.50 | 1 | -0.18 | 40 | -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) | | |
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