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Individual Calculations April 2009 |
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| Montenegro, Pedro Total change: 34.25 | |   |
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| I Internacional Cartago Las Brumas | Cartago | CRC | 2009-01-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2149 | 2022 | 1.00 | 2 | 0.28 | 25 | 7.00 | |
|  Murillo, Alexis | m | | 2322 | CRC | 0.00 | 1 | -0.15 | 25 | -3.75 | |  Duran Vega, Andres | | | 1975 | CRC | 1.00 | 1 | 0.43 | 25 | 10.75 | |
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) | | | | Costa Rican Junior Championship 2009 | Cartago | CRC | 2009-01-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2035 | 2022 | 4.00 | 6 | 1.09 | 25 | 27.25 | |
| | Cabrera, Marco Antonio | | | 2109 | CRC | 0.50 | 1 | 0.12 | 25 | 3.00 | | | Alfaro Guillen, Jose Raul | | | 1892 | CRC | 1.00 | 1 | 0.32 | 25 | 8.00 | | | Ruiz Blais, Sebastian | | | 2231 | CRC | 0.00 | 1 | -0.23 | 25 | -5.75 | | | Angulo Cubero, Oscar | | | 1992 | CRC | 1.00 | 1 | 0.46 | 25 | 11.50 | | | Fernandez, Mario | | | 1973 | CRC | 1.00 | 1 | 0.43 | 25 | 10.75 | | | Montenegro, Esteban | | | 2013 | CRC | 0.50 | 1 | -0.01 | 25 | -0.25 | |
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) | | |
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