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Rapid:
Individual Calculations April 2023 |
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| Tzafir, Arik Total change: 11.80 | |   |
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| Israeli Seniors Championship 50 plus | Herzliya | ISR | 2023-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1531 | 1238 | 2.00 | 5 | 0.59 | 20 | 11.80 | |
|  Shabtai, Ran | f | | 2017 | ISR | 0.00 | 1 | 0.00 | 20 | 0.00 | |  Tal, Rami | | | 1842 | ISR | 0.00 | 1 | -0.02 | 20 | -0.40 | | | Hershkovich, Amir | | | 1379 | ISR | 1.00 | 1 | 0.69 | 20 | 13.80 | | | Lasov, Nahum | | | 1262 | ISR | 1.00 | 1 | 0.53 | 20 | 10.60 | | | Freiberg, Doron | | | 1155 | ISR | 0.00 | 1 | -0.61 | 20 | -12.20 | |
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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