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Individual Calculations May 2011 |
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| Ospina Ortiz, Oscar Alexander Total change: -13.80 | |   |
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| IRT Distrital Open de Mayores MARZO | Bogota | COL | 2011-03-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1954 | 1995 | 3.00 | 5 | 0.22 | 15 | 3.30 | |
|  Nieto, Manuel Valerio Waldo | | | 1840 | COL | 1.00 | 1 | 0.29 | 15 | 4.35 | |  Acosta Cruz, Luis Ivan | | | 1805 | COL | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Narvaez, Faber Alberto | | | 2167 | COL | 0.50 | 1 | 0.23 | 15 | 3.45 | | | Rodriguez Mayorga, Julian E | | | 2053 | COL | 0.00 | 1 | -0.42 | 15 | -6.30 | | | Rincon, Tristancho | | | 1903 | COL | 0.50 | 1 | -0.13 | 15 | -1.95 | |
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 Distrital Open de Mayores ABRIL | Bogota | COL | 2011-04-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1852 | 1995 | 1.50 | 4 | -1.14 | 15 | -17.10 | |
| | Becerra, Juan David | | | 2258 | COL | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Sabogal Varela, Jeison Stiven | | | 1703 | COL | 0.50 | 1 | -0.35 | 15 | -5.25 | | | Leal Cortes, Diego Fernando | | | 1850 | COL | 0.00 | 1 | -0.69 | 15 | -10.35 | | | Rosero, Hugo Alberto | | | 1595 * | COL | 1.00 | 1 | 0.08 | 15 | 1.20 | | | * 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) | | |
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