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Individual Calculations February 2019 |
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| Lafkidis, Apostolos Total change: 9.60 | |   |
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| 2018 youth u12 team championship of Attica | ESSNA | GRE | 2018-11-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1102 | 1145 | 1.50 | 4 | -0.73 | 40 | -29.20 | |
|  Boulamatsis, Konstantinos I | | | 1044 | GRE | 0.50 | 1 | -0.14 | 40 | -5.60 | |  Ikonomou, Theodoros | | | 1070 | GRE | 0.50 | 1 | -0.10 | 40 | -4.00 | | | Samaras, Vasileios E | | | 1024 | GRE | 0.50 | 1 | -0.16 | 40 | -6.40 | | | Arapkoule, Eirini | | | 1268 | GRE | 0.00 | 1 | -0.33 | 40 | -13.20 | |
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) | | | | 4th New Year's open PS Peristeriou Antonis Bellos | Peristeri | GRE | 2019-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1227 | 1222 | 2.00 | 3 | 0.42 | 40 | 16.80 | |
| | Chatziangelou, Panagiotis | | | 1057 | GRE | 1.00 | 1 | 0.28 | 40 | 11.20 | | | Fragkos, Vasileios | | | 1622 * | GRE | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Koumenos, Stefanos Kriton | | | 1003 | GRE | 1.00 | 1 | 0.22 | 40 | 8.80 | | | * 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) | | | | 2019 Attica Friendship Cup Nikos Strofalis Group A Rounds 1-3 | ESSNA | GRE | 2019-01-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1255 | 1222 | 1.00 | 1 | 0.55 | 40 | 22.00 | |
| | Kottakis, Emmanouil | | | 1255 | GRE | 1.00 | 1 | 0.55 | 40 | 22.00 | |
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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