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Individual Calculations January 2009 |
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| Arias, Juan Diego Total change: -38.50 | |   |
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| IRT Open Internacional U Central | Bogota | COL | 2008-11-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2023 | 2134 | 1.00 | 4 | -1.54 | 25 | -38.50 | |
|  Acosta, Alejandro | m | | 2344 | COL | 0.00 | 1 | -0.23 | 25 | -5.75 | |  Garcia, Martha L | | | 2000 | COL | 1.00 | 1 | 0.32 | 25 | 8.00 | | | Velasco, Luz Mariela | | | 1834 | COL | 0.00 | 1 | -0.85 | 25 | -21.25 | | | Univio Sanchez, German | | | 1912 | COL | 0.00 | 1 | -0.78 | 25 | -19.50 | |
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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