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Individual Calculations April 2009 |
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| Kostas, Alexandros Total change: -24.90 | |   |
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| 2009 Indiv. Youth Champ. of Attica - Boys U 14 | Nikea - Athens | GRE | 2008-12-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1738 | 1809 | 3.00 | 5 | 0.07 | 15 | 1.05 | |
|  Konstantopoulos, Nikolaos | | | 1475 | GRE | 1.00 | 1 | 0.12 | 15 | 1.80 | |  Tsironis, Leonidas | | | 1780 | GRE | 1.00 | 1 | 0.46 | 15 | 6.90 | | | Michelakos, Panagiotis | | | 1997 | GRE | 0.50 | 1 | 0.24 | 15 | 3.60 | | | Zivas, Konstantinos | | | 1730 | GRE | 0.00 | 1 | -0.61 | 15 | -9.15 | | | Hatzoudis, Gerasimos | | | 1710 | GRE | 0.50 | 1 | -0.14 | 15 | -2.10 | |
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) | | | | 12 Indiv. Champ. Greece - Boys U18 | Peristeri - Athens | GRE | 2009-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1951 | 1819 | 1.00 | 6 | -0.97 | 15 | -14.55 | |
| | Pambalos, Panayiotis | | | 2123 | GRE | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Athanasiou, Georgios | | | 1915 | GRE | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Stefanatos, Nikolaos | | | 1879 | GRE | 0.00 | 1 | -0.42 | 15 | -6.30 | | | Kalogeris, Ioannis | | | 1914 | GRE | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Sandalakis, Nikolaos | | | 1919 | GRE | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Kesidis, Odyseas | | | 1958 | GRE | 0.00 | 1 | -0.31 | 15 | -4.65 | |
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) | | | | 2009 Attica teams Ch. B div. stage 1 - Group 1 | Attica | GRE | 2009-01-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1754 | 1819 | 0.00 | 1 | -0.59 | 15 | -8.85 | |
| | Zivas, Konstantinos | | | 1754 | GRE | 0.00 | 1 | -0.59 | 15 | -8.85 | |
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) | | | | 2009 Attica teams Ch. B div. stage 2 - Group 1 | Attica | GRE | 2009-01-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1696 | 1819 | 0.50 | 1 | -0.17 | 15 | -2.55 | |
| | Grigoriadis, Mihail | | | 1696 | GRE | 0.50 | 1 | -0.17 | 15 | -2.55 | |
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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