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Individual Calculations April 2009 |
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| Guerrero, Hernando Total change: -3.90 | |   |
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| IRT X Open Feria de Cali Sub2100 | Cali | COL | 2008-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1962 | 2027 | 1.50 | 3 | -0.26 | 15 | -3.90 | |
|  Velasco, Luz Mariela | | | 1834 | COL | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Guerrero, Ever | | | 2095 | COL | 0.50 | 1 | 0.09 | 15 | 1.35 | |  Vacca, Leonardo | | | 1958 | COL | 0.00 | 1 | -0.60 | 15 | -9.00 | |
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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