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Individual Calculations October 2021 |
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| Loughran, John Total change: -35.80 | |   |
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| The 100th Irish Championships 2021 Final Weekender | Dublin | IRL | 2021-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1515 | 1660 | 0.00 | 3 | -2.07 | 20 | -41.40 | |
|  Kirulis, Edgars | | | 1586 | IRL | 0.00 | 1 | -0.60 | 20 | -12.00 | |  Hackett, William | | | 1530 | IRL | 0.00 | 1 | -0.68 | 20 | -13.60 | | | Paibir, Atharva | | | 1428 | IRL | 0.00 | 1 | -0.79 | 20 | -15.80 | |
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 Irish over50 and over65 championship 2021 | Dublin | IRL | 2021-09-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1742 | 1660 | 2.00 | 4 | 0.28 | 20 | 5.60 | |
| | O`connor, Jonathan | | | 2060 * | IRL | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Reynolds, David W. | | | 1397 | IRL | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Harding, Tim D | c | | 2003 | IRL | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Divilly, Paddy | | | 1507 | IRL | 1.00 | 1 | 0.30 | 20 | 6.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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