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Individual Calculations September 2009 |
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| Kosturska, Yoana Total change: -17.65 | |   |
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| 19th Open Womens Bulgarian Championship 2009 | Vratsa | BUL | 2009-07-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1952 | 1849 | 2.00 | 7 | -0.76 | 25 | -19.00 | |
|  Maksimovic, Suzana | | wg | 2249 * | SRB | 1.00 | 1 | 0.92 | 25 | 23.00 | |  Stefanova, Milena | | | 1985 | BUL | 0.00 | 1 | -0.32 | 25 | -8.00 | | | Chelushkina, Irina | | wg | 2249 * | SRB | 0.00 | 1 | -0.08 | 25 | -2.00 | | | Milutinovic, Stefana | | | 1716 | SRB | 0.00 | 1 | -0.68 | 25 | -17.00 | | | Shivacheva, Donika | | | 1645 | BUL | 0.00 | 1 | -0.76 | 25 | -19.00 | | | Dimitrova, Aseniya | | | 1807 | BUL | 1.00 | 1 | 0.44 | 25 | 11.00 | | | Sirkova, Darena | | | 2012 | BUL | 0.00 | 1 | -0.28 | 25 | -7.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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) | | | NOTE: K factor changed | | Team Championship for boys U16 | Borovets | BUL | 2009-08-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1669 | 1849 | 1.50 | 2 | 0.09 | 15 | 1.35 | |
| | Marinov, Velislav | | | 1513 | BUL | 1.00 | 1 | 0.12 | 15 | 1.80 | | | Nikolov, Mihail | | | 1825 | BUL | 0.50 | 1 | -0.03 | 15 | -0.45 | |
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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