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Individual Calculations April 2009 |
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| Porjazov, Petar Total change: -27.30 | |   |
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| 31st Bulgarian Open Chmpionship - Georgi Tringov Memorial 01.02.2009-07.02.2009 | Plovdiv | BUL | 2009-02-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2025 | 2268 | 2.00 | 5 | -1.82 | 15 | -27.30 | |
|  Bozilov, Dragan | | | 1918 | SRB | 1.00 | 1 | 0.11 | 15 | 1.65 | |  Janev, Evgeni | g | | 2454 | BUL | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Ivanov, Valentin | | | 1918 | BUL | 0.00 | 1 | -0.89 | 15 | -13.35 | | | Yashar, Orhan | | | 1918 | BUL | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Galunova, Tsveta | | | 1918 | BUL | 0.00 | 1 | -0.89 | 15 | -13.35 | |
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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