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Individual Calculations January 2010 |
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| Zapata Arbelaes, Estiven Total change: 4.80 | |   |
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| World Youth Chess Championships-u10 | Antalya | TUR | 2009-11-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1720 | 1971 | 1.50 | 3 | -0.91 | 15 | -13.65 | |
|  Kumcu, Ugur | | | 1609 | TUR | 1.00 | 1 | 0.10 | 15 | 1.50 | |  Savenkov, Konstantin | | | 1808 | RUS | 0.50 | 1 | -0.22 | 15 | -3.30 | | | Lin, Dachey | | | 1742 | USA | 0.00 | 1 | -0.79 | 15 | -11.85 | |
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 Camp Nacional Sub14 Absoluto | Medellin (Colombia) | COL | 2009-12-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1996 | 1971 | 4.50 | 7 | 1.23 | 15 | 18.45 | |
| | Valencia, David Fernando | | | 1834 | COL | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Posada, Juan Manuel | f | | 2001 | COL | 0.50 | 1 | 0.04 | 15 | 0.60 | | | Del Valle, Juan Pablo | | | 2068 | COL | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Camargo, Santiago | | | 2054 | COL | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Ruiz C, Joshua D | f | | 2120 | COL | 0.50 | 1 | 0.20 | 15 | 3.00 | | | Blandon, Luis Guillermo | | | 1988 | COL | 1.00 | 1 | 0.52 | 15 | 7.80 | | | Hernandez, Cristian Andres | | | 1909 | COL | 0.00 | 1 | -0.59 | 15 | -8.85 | |
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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