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Individual Calculations December 2023 |
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| O`sullivan, Aidan Total change: -11.00 | |   |
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| The 31st Cork Chess Congress 2023 Majors | Cork | IRL | 2023-10-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1222 | 1622 | 1.00 | 1 | 0.08 | 40 | 3.20 | |
|  Kesare, Aarav | | | 1222 * | IRL | 1.00 | 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) | | | | The Limerick Open 2023 | Ennis | IRL | 2023-11-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1997 | 1622 | 0.00 | 2 | -0.22 | 40 | -8.80 | |
| | Quinn, Rory | f | | 2102 | IRL | 0.00 | 1 | -0.05 | 40 | -2.00 | | | Putar, Lara | | | 1892 | IRL | 0.00 | 1 | -0.17 | 40 | -6.80 | |
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) | | | NOTE: K factor changed | | UCD Congress 2023 Majors | Dublin | IRL | 2023-11-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1573 | 1622 | 2.50 | 5 | -0.27 | 20 | -5.40 | |
| | Doolin, Bedhbh | | | 1434 | IRL | 1.00 | 1 | 0.26 | 20 | 5.20 | |  Eimertenbrink, Daniel | | | 1804 | GER | 0.00 | 1 | -0.26 | 20 | -5.20 | | | Nichenametla V, Advaith | | | 1516 | IRL | 0.50 | 1 | -0.14 | 20 | -2.80 | | | Doolin, Nemhain | | | 1325 | IRL | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Butler, Eddie | | | 1786 | IRL | 0.00 | 1 | -0.28 | 20 | -5.60 | |
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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