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Individual Calculations January 2010 |
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| Real Pereyra, Diana Carime Total change: -30.30 | |   |
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| North America Youth Chess Championships Under 14 | Mazatlan, Sinaloa | MEX | 2009-10-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1939 | 1910 | 1.00 | 1 | 0.54 | 15 | 8.10 | |
|  Gomez Garcia, Jose Santos | | | 1939 | MEX | 1.00 | 1 | 0.54 | 15 | 8.10 | |
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) | | | | World Youth Chess Championship-u14g | Antalya | TUR | 2009-11-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1780 | 1965 | 5.00 | 10 | -2.20 | 15 | -33.00 | |
| | Alev, Gonulden Seda | | | 1565 * | TUR | 0.50 | 1 | -0.42 | 15 | -6.30 | |  Kilic, Ozge Nur | | | 1565 * | TUR | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Aflalo, Sophie | | | 2036 | FRA | 0.00 | 1 | -0.40 | 15 | -6.00 | | | Azizbekyan, Arpi | | | 1699 | ARM | 1.00 | 1 | 0.18 | 15 | 2.70 | | | Vujnovic, Patricija | | | 1888 | CRO | 0.00 | 1 | -0.61 | 15 | -9.15 | | | Tkachova, Anastasia | | | 1865 | UKR | 0.00 | 1 | -0.64 | 15 | -9.60 | | | Premanath, Dinushki | | | 1819 | SRI | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Durmaz, Ayca Fatma | | | 1838 | TUR | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Roy, Ali | | | 1767 | SCO | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Kuehnel, Lena | | | 1761 | GER | 0.00 | 1 | -0.76 | 15 | -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) | | | | Absolute National Championship Women´s | Huatulco, Oaxaca | MEX | 2009-12-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1981 | 1965 | 3.00 | 7 | -0.36 | 15 | -5.40 | |
| | Guerrero Rodriguez, Alejan | | wm | 2114 | MEX | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Zavala Tello, Marlene | | | 1928 | MEX | 1.00 | 1 | 0.45 | 15 | 6.75 | | | Garcia Morales, Ivette Ale | | | 1939 | MEX | 0.00 | 1 | -0.54 | 15 | -8.10 | | | Espino Guerrero, Rebeca | | | 1821 | MEX | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Duran Juarez, Citlali | | | 1892 | MEX | 0.00 | 1 | -0.60 | 15 | -9.00 | | | Esquivel De Leon, Aurora | | wm | 2017 | MEX | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Hernandez Guerrero, Yadira | | wm | 2159 | MEX | 0.00 | 1 | -0.25 | 15 | -3.75 | |
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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