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Individual Calculations September 2021 |
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| Gurbanov, Andrei Total change: 13.40 | |   |
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| Liga Alef Zafon Yom Hol 2021 Round 9 - 10 | Various | ISR | 2021-07-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1957 | 2257 | 2.00 | 2 | 0.32 | 20 | 6.40 | |
|  Mirzayev, Sergey | | | 1857 * | ISR | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Portnoy, Mikhail | | | 2056 | ISR | 1.00 | 1 | 0.24 | 20 | 4.80 | | | * 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) | | | | Israel league playoffs 2021 | Various | ISR | 2021-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2146 | 2259 | 1.00 | 1 | 0.35 | 20 | 7.00 | |
| | Bortnik, Rostislav | | | 2146 | ISR | 1.00 | 1 | 0.35 | 20 | 7.00 | |
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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