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Individual Calculations September 2022 |
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| Riahi, Arvin Total change: -21.60 | |   |
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| Iran Boys Student School Championship-Shahr-e kord 2022 | Shahre kord | IRI | 2022-08-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1400 | 1783 | 0.50 | 2 | -1.32 | 40 | -52.80 | |
|  Taherkhani, M Hosein | | | 1383 * | IRI | 0.00 | 1 | -0.92 | 40 | -36.80 | |  Dezhdar, Aria | | | 1417 | IRI | 0.50 | 1 | -0.40 | 40 | -16.00 | | | * 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) | | | | 5th Iranian Amateures Chess Championship 2022 | Zanjan | IRI | 2022-08-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1573 | 1783 | 7.00 | 9 | 0.78 | 40 | 31.20 | |
| | Sheini Dashtgol, Arash | | | 1136 | IRI | 1.00 | 1 | 0.01 | 40 | 0.40 | | | Roshani, Soroush | | | 1424 | IRI | 1.00 | 1 | 0.10 | 40 | 4.00 | | | Javanshir, Omid | | | 1604 | IRI | 1.00 | 1 | 0.27 | 40 | 10.80 | | | Vahdatian, Davood | | | 1999 | IRI | 0.00 | 1 | -0.22 | 40 | -8.80 | | | Mehrkhah, Hadi | | | 1314 | IRI | 1.00 | 1 | 0.05 | 40 | 2.00 | | | Zahmati, Sobhan | | | 1960 | IRI | 0.00 | 1 | -0.27 | 40 | -10.80 | | | Rahbar, Aihan | | | 1469 | IRI | 1.00 | 1 | 0.14 | 40 | 5.60 | | | Kord Zanganeh, Kian | | | 1383 * | IRI | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Ansari, Soheil | | | 1867 | IRI | 1.00 | 1 | 0.62 | 40 | 24.80 | | | * 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) | | |
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