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Individual Calculations October 2021 |
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| Grant, David Total change: 25.20 | |   |
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| The Irish over50 and over65 championship 2021 | Dublin | IRL | 2021-09-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1576 | 1197 | 1.00 | 4 | 0.63 | 40 | 25.20 | |
|  Gibson, John F. | | | 1597 * | IRL | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Donohoe, Eugene | | | 1597 * | IRL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Whelan, Niall P. | | | 1514 | IRL | 1.00 | 1 | 0.87 | 40 | 34.80 | | | Lynch, Peter J. | | | 1597 * | IRL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * 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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