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Individual Calculations July 2009 |
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| Sirkova, Darena Total change: 48.15 | |   |
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| Bulgarian individual chess championship girls 20 | Sofia | BUL | 2009-03-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1803 | 1942 | 5.50 | 7 | 0.82 | 15 | 12.30 | |
|  Vasileva, Veronika | | | 1592 | BUL | 1.00 | 1 | 0.11 | 15 | 1.65 | |  Naydenova, Yordanka | | | 1896 | BUL | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Todorova, Kalina | | | 1810 | BUL | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Hristova, Hristina | | | 1849 | BUL | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Stefanova, Milena | | | 2016 | BUL | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Harizanova, Elitsa | | | 1637 | BUL | 1.00 | 1 | 0.14 | 15 | 2.10 | | | Kosturska, Yoana | | | 1822 | BUL | 0.00 | 1 | -0.66 | 15 | -9.90 | |
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) | | | | Bulgarian Individual Championship for juniors 16 years old | Sunny Beach | BUL | 2009-03-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1774 | 1942 | 1.00 | 2 | -0.41 | 15 | -6.15 | |
| | Rajchev, Rostislav | | | 1659 | BUL | 0.00 | 1 | -0.84 | 15 | -12.60 | | | Bukovski, Ivan | | | 1889 | BUL | 1.00 | 1 | 0.43 | 15 | 6.45 | |
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) | | | | Bulgarian Chess championship for girls 16 years old | Sunny Beach | BUL | 2009-04-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1799 | 1964 | 2.00 | 3 | -0.09 | 15 | -1.35 | |
| | Miteva, Silvena | | | 1614 | BUL | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Krumova, Ani | | | 1890 | BUL | 0.50 | 1 | -0.10 | 15 | -1.50 | | | Tsekova, Viktoria | | | 1892 | BUL | 0.50 | 1 | -0.10 | 15 | -1.50 | |
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) | | | | Team Champ. of Crete - B' National Category 2009 | Crete | GRE | 2009-04-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2013 | 1964 | 1.00 | 2 | 0.12 | 15 | 1.80 | |
| | Aggeli, Eleni | | | 1871 | GRE | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Georgiakakis, Ioannis | | | 2155 | GRE | 0.00 | 1 | -0.25 | 15 | -3.75 | |
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) | | | | 42-nd Bulgarian Women's Team Championship 2009, Group A WOMEN | Sunny Beach | BUL | 2009-06-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2108 | 1964 | 5.00 | 7 | 2.77 | 15 | 41.55 | |
| | Pionova, Sonja | | | 2034 | BUL | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Chilingirova, Pavlina | | wm | 2157 | BUL | 1.00 | 1 | 0.75 | 15 | 11.25 | | | Ilieva, Hristina | | | 2114 | BUL | 1.00 | 1 | 0.70 | 15 | 10.50 | | | Andreeva, Plamena | | wf | 2127 | BUL | 1.00 | 1 | 0.72 | 15 | 10.80 | | | Collas, Silvia | m | wg | 2314 | FRA | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Vladimirova, Maria | | | 2085 | BUL | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Petkova, Veneta | | | 1928 | BUL | 1.00 | 1 | 0.45 | 15 | 6.75 | |
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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