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Individual Calculations April 2023 |
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| Kostelidou, Despoina Total change: -12.60 | |   |
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| 2023 Attica Friendship Cup | Attica | GRE | 2023-01-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1082 | 1469 | 1.00 | 1 | 0.09 | 20 | 1.80 | |
|  Afantiti, Maria Varvara | | | 1082 | GRE | 1.00 | 1 | 0.09 | 20 | 1.80 | |
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) | | | | 2023 Team Championship of Attica - C Category rounds 1-5 | Attica | GRE | 2023-02-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1434 | 1469 | 1.00 | 3 | -0.72 | 20 | -14.40 | |
| | Mallia, Alexandra | | | 1168 | GRE | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Spirou, Marina | | | 1914 | GRE | 0.00 | 1 | -0.06 | 20 | -1.20 | |  Zarkada, Athina | | | 1219 | GRE | 0.00 | 1 | -0.81 | 20 | -16.20 | |
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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