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Individual Calculations July 2009 |
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| Acosta, Jorian Jared Total change: -35.00 | |   |
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| Nacional Sub14 Absoluto | Villavicencio | COL | 2009-03-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1975 | 2003 | 0.00 | 1 | -0.54 | 25 | -13.50 | |
|  Ospina, Carl Erik | | | 1975 | COL | 0.00 | 1 | -0.54 | 25 | -13.50 | |
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) | | | | Nacional Sub12 Absoluto | Bogota | COL | 2009-04-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2007 | 2001 | 1.00 | 1 | 0.51 | 25 | 12.75 | |
|  Leon, Gustavo | | | 2007 | COL | 1.00 | 1 | 0.51 | 25 | 12.75 | |
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) | | | | IRT GP Sub 14 | Bogota | COL | 2009-04-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1975 | 2001 | 0.00 | 1 | -0.54 | 25 | -13.50 | |
| | Pardo, Javier Andres | | | 1975 | COL | 0.00 | 1 | -0.54 | 25 | -13.50 | |
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) | | | | 5th World School Chess Championship - Open U09 | Thessaloniki | GRE | 2009-04-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1724 | 2001 | 0.00 | 1 | -0.83 | 25 | -20.75 | |
| | Ghadiri, Radmehr | | | 1724 | IRI | 0.00 | 1 | -0.83 | 25 | -20.75 | |
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) | | |
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