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Individual Calculations October 2021 |
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| Whelan, Niall P. Total change: -59.60 | |   |
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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 |
| 1422 | 1514 | 0.50 | 4 | -1.83 | 20 | -36.60 | |
|  Kavanagh, James | | | 1719 | IRL | 0.50 | 1 | 0.26 | 20 | 5.20 | |  Lynch, Peter J. | | | 1661 | IRL | 0.00 | 1 | -0.30 | 20 | -6.00 | | | Ivanov, Andrey | | | 1145 | IRL | 0.00 | 1 | -0.90 | 20 | -18.00 | | | Liu, Wenle | | | 1162 | IRL | 0.00 | 1 | -0.89 | 20 | -17.80 | |
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 |
| 1617 | 1514 | 0.00 | 3 | -1.15 | 20 | -23.00 | |
| | Nikrow, Shahram | | | 1871 | IRL | 0.00 | 1 | -0.11 | 20 | -2.20 | | | Killane, Jack | | | 1782 | IRL | 0.00 | 1 | -0.17 | 20 | -3.40 | | | Grant, David | | | 1197 | IRL | 0.00 | 1 | -0.87 | 20 | -17.40 | |
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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