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Individual Calculations September 2011 |
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| Derakhshani, Borna Total change: 26.10 | |   |
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| Tehran Championship 2011 (open) | Tehran | IRI | 2011-06-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2020 | 1663 | 0.00 | 2 | -0.21 | 30 | -6.30 | |
|  Mehrabi, Morteza | | | 1981 | IRI | 0.00 | 1 | -0.13 | 30 | -3.90 | | | Raji Ghasemi, Hamid Reza | | | 2058 | IRI | 0.00 | 1 | -0.08 | 30 | -2.40 | |
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) | | | | 4th omid chess tournament | Tehran | IRI | 2011-07-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1872 | 1663 | 1.50 | 7 | -0.37 | 30 | -11.10 | |
|  Noroozi, Reza | | | 2063 * | IRI | 0.00 | 1 | -0.08 | 30 | -2.40 | | | Eisapour, Ali | | | 1626 | IRI | 0.50 | 1 | -0.05 | 30 | -1.50 | | | Rajabi, Mohsen | | | 2063 * | IRI | 0.50 | 1 | 0.42 | 30 | 12.60 | | | Akhgar, Mohammad | | | 2057 | IRI | 0.00 | 1 | -0.08 | 30 | -2.40 | | | Salehi, Kamyar | | | 1740 | IRI | 0.50 | 1 | 0.11 | 30 | 3.30 | | | Najar, Navid | | | 1801 | IRI | 0.00 | 1 | -0.31 | 30 | -9.30 | | | Ganjali, Hossein | | | 1751 | IRI | 0.00 | 1 | -0.38 | 30 | -11.40 | | | * 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) | | | NOTE: K factor changed | | 10 th Avicenna International open chess tournament | Hamedan | IRI | 2011-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1997 | 1663 | 2.50 | 6 | 1.77 | 15 | 26.55 | |
| | Rezaeisafa, Erfan | | | 1996 | IRI | 0.50 | 1 | 0.38 | 15 | 5.70 | | | Pooreraghian, Mohammadreza | | | 1997 | IRI | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Valookolaei, Saeid | | | 1971 | IRI | 0.50 | 1 | 0.36 | 15 | 5.40 | | | Mohammadisafyarkhan, Amir | | | 2001 | IRI | 0.50 | 1 | 0.38 | 15 | 5.70 | | | Sedaghat Khah, Hamid Reza | | | 1954 | IRI | 1.00 | 1 | 0.85 | 15 | 12.75 | | | Shamsi, Roohalah | | | 2063 * | IRI | 0.00 | 1 | -0.08 | 15 | -1.20 | | | * 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) | | | NOTE: K factor changed | | Tehran Ramazan open chess tournament 2011 | Tehran | IRI | 2011-08-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1999 | 1663 | 1.50 | 3 | 1.13 | 15 | 16.95 | |
| | Javidfard, Amirsalar | | | 2029 | IRI | 0.50 | 1 | 0.40 | 15 | 6.00 | | | Alavi, Homa | | | 2042 | IRI | 0.00 | 1 | -0.09 | 15 | -1.35 | | | Galedari, Barbod | | | 1925 | IRI | 1.00 | 1 | 0.82 | 15 | 12.30 | |
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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