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Individual Calculations February 2015 |
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| Kokkalis, Grigorios Total change: 36.80 | |   |
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| 2015 youth championships of ESSTH-H - open U12 | Thessaloniki | GRE | 2014-12-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1248 | 1234 | 4.00 | 5 | 1.59 | 40 | 63.60 | |
|  Katsigris, Antonios | | | 1143 | GRE | 1.00 | 1 | 0.38 | 40 | 15.20 | |  Triantafilidis, Mihail | | | 1373 | GRE | 0.50 | 1 | 0.19 | 40 | 7.60 | | | Kofkelis, Eleftherios | | | 1250 | GRE | 1.00 | 1 | 0.52 | 40 | 20.80 | | | Ioannou, Ioannis Nik. | | | 1194 | GRE | 1.00 | 1 | 0.44 | 40 | 17.60 | | | Maggos, Nikolaos | | | 1279 | GRE | 0.50 | 1 | 0.06 | 40 | 2.40 | |
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) | | | | White Tower 2015 - Open Championship ESSTH-H - B group | Thessaloniki | GRE | 2015-01-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1295 | 1239 | 1.50 | 5 | -0.67 | 40 | -26.80 | |
| | Nikolaou, Alexandros | | | 1453 | GRE | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Tsouchnikas, Orestis | | | 1042 | GRE | 1.00 | 1 | 0.25 | 40 | 10.00 | | | Kalpakidis, Konstantinos | | | 1162 | GRE | 0.50 | 1 | -0.11 | 40 | -4.40 | | | Karavalasis, Stilianos | | | 1505 | GRE | 0.00 | 1 | -0.18 | 40 | -7.20 | | | Papagiannis, Asterios | | | 1311 | GRE | 0.00 | 1 | -0.40 | 40 | -16.00 | |
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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