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Individual Calculations October 2021 |
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| Murray, Sam Total change: 25.40 | |   |
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| The 100th Irish Championships 2021 | Dublin | IRL | 2021-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1962 | 1621 | 2.00 | 6 | 1.28 | 20 | 25.60 | |
|  Murphy, Sean J. | | | 1990 | IRL | 0.00 | 1 | -0.10 | 20 | -2.00 | |  Duffy, Seamus | | | 1945 | IRL | 0.50 | 1 | 0.37 | 20 | 7.40 | | | Burke, Kevin A. | | | 1883 | IRL | 0.50 | 1 | 0.32 | 20 | 6.40 | | | Murchadha, Oissine | | | 1976 | IRL | 0.00 | 1 | -0.11 | 20 | -2.20 | | | Cafolla, Peter | | | 1958 | IRL | 0.50 | 1 | 0.38 | 20 | 7.60 | | | O`connor, Jonathan | | | 2021 * | IRL | 0.50 | 1 | 0.42 | 20 | 8.40 | | | * 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) | | | | The 100th Irish Championships 2021 Final Weekender | Dublin | IRL | 2021-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1711 | 1621 | 2.00 | 5 | -0.01 | 20 | -0.20 | |
| | Ruchko, Denis | | | 1976 | IRL | 0.00 | 1 | -0.11 | 20 | -2.20 | | | Fitzpatrick, Kevin | | | 1463 | IRL | 1.00 | 1 | 0.29 | 20 | 5.80 | | | Kelly, John C. | | | 1881 | IRL | 0.00 | 1 | -0.18 | 20 | -3.60 | | | Fitzgerald, Niall | | | 1549 | IRL | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Farrelly, Eoin | | | 1686 | IRL | 0.00 | 1 | -0.41 | 20 | -8.20 | |
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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