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Individual Calculations July 2009 |
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| Konstantinov, Aleksandar Total change: 6.75 | |   |
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| Bulgarian individual chess championship boys 20 | Sofia | BUL | 2009-03-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1958 | 1878 | 1.50 | 3 | 0.27 | 25 | 6.75 | |
|  Georgiev, Steljan | | | 2168 | BUL | 0.00 | 1 | -0.16 | 25 | -4.00 | | | Andreev, Andrey | | | 1889 | BUL | 0.50 | 1 | 0.02 | 25 | 0.50 | |  Nikolov, Rumen | | | 1816 | BUL | 1.00 | 1 | 0.41 | 25 | 10.25 | |
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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