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Individual Calculations July 2021 |
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| Ivanov, Oleg Total change: -42.80 | |   |
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| 19th Chess Weekend Tournament | Sofia | BUL | 2021-05-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1266 | 1470 | 0.50 | 4 | -2.52 | 20 | -50.40 | |
|  Atanasov, Kristiyan | | | 1308 | BUL | 0.50 | 1 | -0.21 | 20 | -4.20 | |  Vorobyova, Sofia | | | 1274 | RUS | 0.00 | 1 | -0.75 | 20 | -15.00 | | | Taseva, Nia | | | 1330 | BUL | 0.00 | 1 | -0.69 | 20 | -13.80 | | | Ivanov, Lachezar | | | 1152 | BUL | 0.00 | 1 | -0.87 | 20 | -17.40 | |
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) | | | | Ropotamo Cup 2021 | Primorsko | BUL | 2021-06-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1521 | 1470 | 3.50 | 7 | 0.38 | 20 | 7.60 | |
| | Genov, Petko | | | 1870 * | BUL | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Atanasov, Aleksandar | | | 1187 | BUL | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Kononenko, Vladimir | | | 1745 | BUL | 0.00 | 1 | -0.17 | 20 | -3.40 | | | Tutekov, Teodor | | | 1119 | BUL | 0.50 | 1 | -0.39 | 20 | -7.80 | | | Georgiev, Radmil | | | 1152 | BUL | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Dragiev, Drago | | | 1766 | BUL | 1.00 | 1 | 0.85 | 20 | 17.00 | | | Parvanov, Mitko | | | 1807 | BUL | 0.00 | 1 | -0.12 | 20 | -2.40 | | | * 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) | | |
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