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Individual Calculations May 2012 |
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| Parra, Brayan Total change: 23.25 | |   |
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| IRT Festival Nacional Ajedrez Escolar Sub17 Absoluto | Cali | COL | 2012-02-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1979 | 1799 | 2.00 | 4 | 0.90 | 15 | 13.50 | |
|  Hernandez, Cristian Andres | | | 2109 | COL | 0.00 | 1 | -0.14 | 15 | -2.10 | |  Mayorquin, Nicolas | | | 1897 | COL | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Jaramillo Ochoa, Mateo | | | 1959 | COL | 0.50 | 1 | 0.21 | 15 | 3.15 | | | Florez, Luis Angel | | | 1952 | COL | 0.50 | 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) | | | | IRT Torneo Zonal Sub-16 Absoluto Zona Sur 2012 | Florencia | COL | 2012-04-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1904 | 1794 | 2.50 | 4 | 1.03 | 15 | 15.45 | |
| | Medina, Andres Felipe | | | 1882 | COL | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Arismendi, Efrain Steven | | | 1668 | COL | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Hernandez, Cristian Andres | | | 2116 | COL | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Munoz Romero, Cristian Camilo | | | 1948 | COL | 0.50 | 1 | 0.21 | 15 | 3.15 | |
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) | | | | Zonal Sub-18 Absoluto Zona Sur 2012 | Cali | COL | 2012-04-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1881 | 1794 | 0.00 | 1 | -0.38 | 15 | -5.70 | |
| | Gonzalez, Andres Felipe | | | 1881 | COL | 0.00 | 1 | -0.38 | 15 | -5.70 | |
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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