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Individual Calculations January 2009 |
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| Gonzalez, Sonia Total change: -19.50 | |   |
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| IRT Nacional Inter-Empresas 2008 | Bogota | COL | 2008-10-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2118 | 2021 | 3.00 | 5 | 1.14 | 25 | 28.50 | |
|  Valle, Efrain | c | | 2173 | COL | 0.00 | 1 | -0.30 | 25 | -7.50 | |  Juez, Henry David | | | 2056 | COL | 1.00 | 1 | 0.55 | 25 | 13.75 | | | Salcedo, Jackeline | | wf | 2097 | COL | 1.00 | 1 | 0.60 | 25 | 15.00 | | | Camargo, Santiago | | | 2082 | COL | 1.00 | 1 | 0.58 | 25 | 14.50 | | | Rodriguez, Wilmer Alberto | | | 2181 | COL | 0.00 | 1 | -0.29 | 25 | -7.25 | |
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) | | | NOTE: K factor changed | | Torneo IRT OPEN DE LAS AMERICAS | Medellin | COL | 2008-11-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2031 | 2021 | 1.00 | 6 | -1.92 | 15 | -28.80 | |
| | Guerrero Forero, Ricardo Alon | | | 2135 | COL | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Martinez, Martin | | | 2027 | COL | 0.00 | 1 | -0.49 | 15 | -7.35 | | | Benitez Rodriguez, Carlos | | | 2051 | COL | 0.00 | 1 | -0.46 | 15 | -6.90 | | | Rendon, Daniel | | | 2037 | COL | 0.00 | 1 | -0.48 | 15 | -7.20 | | | Lopez Idarraga, Daniel Eduard | | | 2023 | COL | 1.00 | 1 | 0.50 | 15 | 7.50 | | | Perez, Laura | | | 1914 | COL | 0.00 | 1 | -0.65 | 15 | -9.75 | |
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) | | | NOTE: K factor changed | | IRT Juegos Nacionales FEM 2008 | San Andres | COL | 2008-12-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1952 | 2021 | 0.50 | 3 | -1.28 | 15 | -19.20 | |
| | Diaz Narvaez, Adriana C | | | 1977 | COL | 0.00 | 1 | -0.56 | 15 | -8.40 | | | Pena Nieto, Ana Marcela | | | 1869 | COL | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Salcedo, Diana | | wf | 2009 | COL | 0.00 | 1 | -0.52 | 15 | -7.80 | |
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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