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Individual Calculations October 2021 |
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| O`connell, Gerard Total change: -3.20 | |   |
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| The 100th Irish Championships 2021 | Dublin | IRL | 2021-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1930 | 2051 | 4.50 | 9 | -1.45 | 20 | -29.00 | |
|  O`flaherty, Kevin | | | 1884 | IRL | 0.00 | 1 | -0.72 | 20 | -14.40 | |  Putar, Lara | | | 1930 | IRL | 0.00 | 1 | -0.66 | 20 | -13.20 | | | Casey, Eoghan | | | 1952 | IRL | 1.00 | 1 | 0.36 | 20 | 7.20 | | | Goss, Alex | | | 1833 | IRL | 0.50 | 1 | -0.28 | 20 | -5.60 | | | O`gorman, Alice | | | 1907 | IRL | 1.00 | 1 | 0.31 | 20 | 6.20 | | | Scott, Luke | | | 1906 | IRL | 0.50 | 1 | -0.19 | 20 | -3.80 | | | Venkatesan, Kavin | | | 2011 | IRL | 0.00 | 1 | -0.56 | 20 | -11.20 | | | Harding, Tim D | c | | 2003 | IRL | 0.50 | 1 | -0.07 | 20 | -1.40 | | | Duffy, Seamus | | | 1945 | IRL | 1.00 | 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) | | | | The Irish over50 and over65 championship 2021 | Dublin | IRL | 2021-09-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1833 | 2051 | 5.00 | 5 | 1.29 | 20 | 25.80 | |
| | Fitzpatrick, Kevin | | | 1651 * | IRL | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Lynch, Peter J. | | | 1661 | IRL | 1.00 | 1 | 0.09 | 20 | 1.80 | | | Nikrow, Shahram | | | 1871 | IRL | 1.00 | 1 | 0.26 | 20 | 5.20 | | | Gibson, John F. | | | 1827 | IRL | 1.00 | 1 | 0.22 | 20 | 4.40 | | | O`connor, Jonathan | | | 2153 | IRL | 1.00 | 1 | 0.64 | 20 | 12.80 | | | * 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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