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Individual Calculations April 2009 |
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| Urbina Quiros, Edwin Total change: 54.50 | |   |
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| I Internacional Cartago Las Brumas | Cartago | CRC | 2009-01-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2145 | 2080 | 4.00 | 6 | 1.43 | 25 | 35.75 | |
|  Monge Calvo, Hugo | | | 1986 | CRC | 1.00 | 1 | 0.37 | 25 | 9.25 | | | Trejos, Enrique | | | 2157 | CRC | 1.00 | 1 | 0.61 | 25 | 15.25 | |  Valdes, Leonardo | m | | 2413 | CRC | 0.00 | 1 | -0.12 | 25 | -3.00 | | | Duran Vega, Sergio | | | 1983 | CRC | 1.00 | 1 | 0.37 | 25 | 9.25 | | | Arroyo, Luis | | | 2008 | CRC | 1.00 | 1 | 0.40 | 25 | 10.00 | | | Murillo, Alexis | m | | 2322 | CRC | 0.00 | 1 | -0.20 | 25 | -5.00 | |
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 | | Costa Rican Junior Championship 2009 | Cartago | CRC | 2009-01-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2036 | 2080 | 3.50 | 5 | 0.71 | 15 | 10.65 | |
| | Alfaro Guillen, Jose Raul | | | 1892 | CRC | 0.00 | 1 | -0.74 | 15 | -11.10 | | | Duran Vega, Sergio | | | 1983 | CRC | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Duran Vega, Andres | | | 1975 | CRC | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Toro Soto, Anthony | | | 2097 | CRC | 1.00 | 1 | 0.52 | 15 | 7.80 | | | Ruiz Blais, Sebastian | | | 2231 | CRC | 1.00 | 1 | 0.70 | 15 | 10.50 | |
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) | | | NOTE: K factor changed | | Costa Rican National Championship Phase 1.1 | San Jose | CRC | 2009-01-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2036 | 2080 | 5.00 | 8 | 0.54 | 15 | 8.10 | |
| | Alfaro Guillen, Jose Raul | | | 1892 | CRC | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Carvajal Gorgona, Jonathan | | | 2175 | CRC | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Castro Madrigal, Randall | | | 2135 | CRC | 0.00 | 1 | -0.42 | 15 | -6.30 | | | Fernandez, Mario | | | 1973 | CRC | 0.50 | 1 | -0.15 | 15 | -2.25 | | | Gomez Huertas, Stanley | | | 1991 | CRC | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Barrios Zamora, Carlos | | | 2046 | CRC | 0.50 | 1 | -0.05 | 15 | -0.75 | | | Rodriguez, David | | | 1968 | CRC | 1.00 | 1 | 0.35 | 15 | 5.25 | | | Cabrera, Marco Antonio | | | 2109 | CRC | 0.50 | 1 | 0.04 | 15 | 0.60 | |
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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