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Individual Calculations July 2021 |
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| Petkova, Irina Total change: 34.40 | |   |
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| Bulgarian Team Chess Championship Women 2021 | Kiten | BUL | 2021-06-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1522 | 1561 | 2.50 | 3 | 0.86 | 40 | 34.40 | |
|  Chitakova, Galya | | | 1698 | BUL | 1.00 | 1 | 0.68 | 40 | 27.20 | | | Hristova, Ivelina | | | 1538 | BUL | 1.00 | 1 | 0.47 | 40 | 18.80 | |  Taseva, Nia | | | 1330 | BUL | 0.50 | 1 | -0.29 | 40 | -11.60 | |
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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