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Individual Calculations April 2009 |
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| Alfaro Guillen, Jose Raul Total change: 102.00 | |   |
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| Costa Rican Junior Championship 2009 | Cartago | CRC | 2009-01-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2071 | 1892 | 3.50 | 6 | 1.84 | 25 | 46.00 | |
|  Urbina Quiros, Edwin | | | 2080 | CRC | 1.00 | 1 | 0.74 | 25 | 18.50 | |  Ruiz Blais, Sebastian | | | 2231 | CRC | 0.50 | 1 | 0.38 | 25 | 9.50 | | | Montenegro, Pedro | | | 2022 | CRC | 0.00 | 1 | -0.32 | 25 | -8.00 | | | Toro Soto, Anthony | | | 2097 | CRC | 1.00 | 1 | 0.76 | 25 | 19.00 | | | Duran Vega, Sergio | | | 1983 | CRC | 1.00 | 1 | 0.62 | 25 | 15.50 | | | Montenegro, Esteban | | | 2013 | CRC | 0.00 | 1 | -0.34 | 25 | -8.50 | |
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) | | | | Costa Rican National Championship Phase 1.1 | San Jose | CRC | 2009-01-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2063 | 1892 | 4.50 | 8 | 2.24 | 25 | 56.00 | |
| | Solano Lopaz, Royner | | | 2083 | CRC | 1.00 | 1 | 0.75 | 25 | 18.75 | | | Urbina Quiros, Edwin | | | 2080 | CRC | 0.00 | 1 | -0.26 | 25 | -6.50 | | | Montenegro, Esteban | | | 2013 | CRC | 1.00 | 1 | 0.66 | 25 | 16.50 | | | Murillo Ortiz, Gustavo | | | 1988 | CRC | 1.00 | 1 | 0.63 | 25 | 15.75 | | | Granados, Carlos | | | 2150 | CRC | 0.50 | 1 | 0.32 | 25 | 8.00 | | | Carvajal Gorgona, Jonathan | | | 2175 | CRC | 0.00 | 1 | -0.16 | 25 | -4.00 | | | Hernandez Coto, Carlos | | | 2028 | CRC | 1.00 | 1 | 0.68 | 25 | 17.00 | | | Duran Vega, Sergio | | | 1983 | CRC | 0.00 | 1 | -0.38 | 25 | -9.50 | |
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) | | |
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