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Individual Calculations September 2018 |
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| Zerafat, Armin Total change: 23.60 | |   |
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| Iran Boys Student Middle school Chess Championship 1397 | Zanjan | IRI | 2018-08-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1555 | 1675 | 2.50 | 3 | 0.59 | 40 | 23.60 | |
|  Mardani, Alireza | | | 1522 | IRI | 0.50 | 1 | -0.20 | 40 | -8.00 | |  Javadi, Mohammad Javad | | | 1795 | IRI | 1.00 | 1 | 0.66 | 40 | 26.40 | | | Kazemian, Amir Hosein | | | 1349 | IRI | 1.00 | 1 | 0.13 | 40 | 5.20 | |
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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