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Individual Calculations September 2021 |
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| Patt, Zafrir Total change: 21.40 | |   |
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| Liga Alef Sharon 2021 Round 9 | Various | ISR | 2021-07-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1988 | 1726 | 0.00 | 1 | -0.18 | 20 | -3.60 | |
|  Ginis, Ariel | | | 1988 | ISR | 0.00 | 1 | -0.18 | 20 | -3.60 | |
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) | | | | Israel Senior Championship Semi-final, Green Village | Green Village | ISR | 2021-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1902 | 1677 | 2.50 | 5 | 1.25 | 20 | 25.00 | |
| | Breger, Baruch | | | 1756 | ISR | 1.00 | 1 | 0.61 | 20 | 12.20 | |  Gal, Moshe | | | 2077 * | ISR | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Levinson, Moshe | | | 1947 | ISR | 0.00 | 1 | -0.17 | 20 | -3.40 | | | Temanlis, Yoel | | | 2077 * | ISR | 0.50 | 1 | 0.42 | 20 | 8.40 | | | Birnboim, Eitan | | | 1654 | ISR | 1.00 | 1 | 0.47 | 20 | 9.40 | | | * 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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