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Individual Calculations October 2021 |
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| Reynolds, David W. Total change: -5.60 | |   |
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| The 100th Irish Championships 2021 Weekday Open | Dublin | IRL | 2021-08-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1642 | 1397 | 1.00 | 2 | 0.54 | 40 | 21.60 | |
|  Melaugh, Shane | c | | 1797 * | IRL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Maher, John | | | 1486 | IRL | 1.00 | 1 | 0.62 | 40 | 24.80 | | | * 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) | | | | The Irish over50 and over65 championship 2021 | Dublin | IRL | 2021-09-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1638 | 1397 | 0.00 | 3 | -0.68 | 40 | -27.20 | |
| | Macelligott, Gerard | c | | 1797 * | IRL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Loughran, John | | | 1660 | IRL | 0.00 | 1 | -0.18 | 40 | -7.20 | |  Fitzpatrick, Kevin | | | 1457 | IRL | 0.00 | 1 | -0.42 | 40 | -16.80 | | | * 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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