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Individual Calculations January 2013 |
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| Contreras, Miguel Total change: -10.65 | |   |
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| IRT Campeonato Bolivariano de Ajedrez 2012 | Bogota | COL | 2012-12-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1970 | 1808 | 2.00 | 7 | -0.23 | 30 | -6.90 | |
|  Chong Chinchay, Eric Joel | | | 1977 | PER | 0.00 | 1 | -0.28 | 30 | -8.40 | |  Univio Sanchez, German | | | 2053 | COL | 0.00 | 1 | -0.20 | 30 | -6.00 | | | Pena Mora, Carlos | | | 1691 | COL | 1.00 | 1 | 0.34 | 30 | 10.20 | | | Perez Olarte, Cesar Camilo | | | 2208 * | COL | 0.00 | 1 | -0.08 | 30 | -2.40 | | | Avella Rosas, Luis Eduardo | | | 1965 | COL | 0.00 | 1 | -0.29 | 30 | -8.70 | | | Osorio, Cristhian Camilo | | | 2189 | COL | 0.00 | 1 | -0.09 | 30 | -2.70 | | | Acosta, Jaime | | | 1710 | COL | 1.00 | 1 | 0.37 | 30 | 11.10 | | | * 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 | | III ITT JAHV McGREGOR | Bogota | COL | 2012-12-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2063 | 1808 | 0.50 | 4 | -0.25 | 15 | -3.75 | |
| | Gutierrez Cascardo, Jaime | | | 2028 | COL | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Lozano, Ricardo | | | 2113 | COL | 0.50 | 1 | 0.36 | 15 | 5.40 | | | Villamil, Hector Orlando | | | 2061 | COL | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Lozano, Nestor Favian | | | 2051 | COL | 0.00 | 1 | -0.20 | 15 | -3.00 | |
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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