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Individual Calculations January 2009 |
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| Lakafosis, Ioannis Total change: 43.35 | |   |
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| 89th Ambelokipi Open | Athens | GRE | 2008-09-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2047 | 1877 | 4.00 | 6 | 2.27 | 15 | 34.05 | |
|  Kakadelis, Str | | | 2138 | GRE | 1.00 | 1 | 0.82 | 15 | 12.30 | | | Klokas, Konstantinos | | | 2167 | GRE | 0.00 | 1 | -0.16 | 15 | -2.40 | |  Trivizas, Mihail | | | 2055 | GRE | 1.00 | 1 | 0.73 | 15 | 10.95 | | | Zahariou, Nikolaus | | | 1825 | GRE | 0.50 | 1 | -0.07 | 15 | -1.05 | | | Karountzos, Nikolaos | | | 2042 | GRE | 0.50 | 1 | 0.22 | 15 | 3.30 | | | Ponirakis, Dimitrios | | | 2055 | GRE | 1.00 | 1 | 0.73 | 15 | 10.95 | |
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) | | | | 90th Ambelokipi Open | Ambelokipi, Athens - Greece | GRE | 2008-10-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1860 | 1887 | 4.00 | 7 | 0.37 | 15 | 5.55 | |
| | Karatzanos, Konstantinos | | | 1537 | GRE | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Makka, Evanthia | | | 2101 | GRE | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Heropoulos, Stefanos | | | 1579 | GRE | 1.00 | 1 | 0.14 | 15 | 2.10 | | | Arvanitis, Georgios | | | 1668 | GRE | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Ponirakis, Dimitrios | | | 2036 | GRE | 0.50 | 1 | 0.20 | 15 | 3.00 | | | Koerant, Filipos | | | 2072 | GRE | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Makkas, Panayiotis | | | 2029 | GRE | 0.50 | 1 | 0.19 | 15 | 2.85 | |
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) | | | | Attica Championship Boys U-20 2009 | Aigaleo - Athens | GRE | 2008-12-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2011 | 1887 | 1.00 | 2 | 0.25 | 15 | 3.75 | |
| | Fotiadis, Ioannis | | | 1784 | GRE | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Aggelis, Nikolaos | | | 2237 | GRE | 0.00 | 1 | -0.11 | 15 | -1.65 | |
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) | | |
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