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Individual Calculations January 2009 |
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| Koutroukis, Andreas Total change: 25.20 | |   |
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| 1st Greek Youth Under 16 Team Championship 2008 | CHalkida | GRE | 2008-10-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1930 | 1814 | 1.00 | 3 | -0.11 | 15 | -1.65 | |
|  Pavlidou, Ekaterini | | | 2139 | GRE | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Ragios, Konstantinos | | | 1592 | GRE | 1.00 | 1 | 0.22 | 15 | 3.30 | |  Skoulakis, Charalambos | | | 2059 | GRE | 0.00 | 1 | -0.20 | 15 | -3.00 | |
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) | | | | 3rd Intern. Youth Chess Meeting GREECE-BULGARIA | OREOKASTRO - THESSALONIKI | GRE | 2008-10-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1864 | 1814 | 2.50 | 5 | 0.33 | 15 | 4.95 | |
| | Stojanov, Ivailo | | | 2009 | BUL | 0.00 | 1 | -0.25 | 15 | -3.75 | | | Galunova, Tsveta | | | 1889 | BUL | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Hristov, Nikolay1 | | | 1858 | BUL | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Dragieva, Denitza | | | 1724 | BUL | 0.50 | 1 | -0.12 | 15 | -1.80 | | | Kosturska, Yoana | | | 1840 | BUL | 1.00 | 1 | 0.54 | 15 | 8.10 | |
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) | | | | 3rd "IN MEMORIAL" Thessaloniki tournament 2008 | Thessaloniki | GRE | 2008-11-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1813 | 1814 | 1.00 | 1 | 0.50 | 15 | 7.50 | |
| | Labridis, Athanasios | | | 1813 | GRE | 1.00 | 1 | 0.50 | 15 | 7.50 | |
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) | | | | 1st Youth (U14) Team Champion 2008 Thess.-Halk. | Tessaloniki - Halkidiki | GRE | 2008-11-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1799 | 1814 | 2.00 | 2 | 0.96 | 15 | 14.40 | |
| | Metaxas, Efstathios | | | 1757 | GRE | 1.00 | 1 | 0.42 | 15 | 6.30 | | | Gouliaros-Antoniadis, Alexandro | | | 1840 | GRE | 1.00 | 1 | 0.54 | 15 | 8.10 | |
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) | | |
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