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Individual Calculations January 2009 |
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| Kosturska, Yoana Total change: -18.00 | |   |
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| IVIS open championship | Sofia | BUL | 2008-10-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1967 | 1840 | 0.50 | 2 | -0.16 | 25 | -4.00 | |
|  Ivanov, Borislav | | | 1926 | BUL | 0.50 | 1 | 0.12 | 25 | 3.00 | | | Vasilev, Rosen | | | 2007 | BUL | 0.00 | 1 | -0.28 | 25 | -7.00 | |
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 |
| 1670 | 1840 | 3.00 | 5 | -0.56 | 25 | -14.00 | |
| | Amiridou, Dimitra | | | 1507 | GRE | 0.00 | 1 | -0.88 | 25 | -22.00 | |  Sahinidis, Evagelos | | | 1746 | GRE | 1.00 | 1 | 0.37 | 25 | 9.25 | | | Tsolaki, Eleni | | | 1686 | GRE | 1.00 | 1 | 0.29 | 25 | 7.25 | | | Batzolis, Georgios | | | 1595 | GRE | 1.00 | 1 | 0.20 | 25 | 5.00 | | | Koutroukis, Andreas | | | 1814 | GRE | 0.00 | 1 | -0.54 | 25 | -13.50 | |
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) | | |
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