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Individual Calculations January 2010 |
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| Alvarez Hernandez, David Total change: -12.75 | |   |
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| Memorial Rosa Castro | Moravia | CRC | 2009-08-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2147 | 1967 | 0.00 | 2 | -0.60 | 15 | -9.00 | |
|  Murillo, Alexis | m | | 2310 | CRC | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Arroyo Valverde, Luis | | | 1984 | CRC | 0.00 | 1 | -0.48 | 15 | -7.20 | |
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 Open 2009 | San Jose | CRC | 2009-11-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1999 | 1967 | 2.50 | 6 | -0.25 | 15 | -3.75 | |
|  Alvarado, Dizan Ernesto | | | 2045 | CRC | 1.00 | 1 | 0.61 | 15 | 9.15 | | | Arroyo, Luis | | | 1984 | CRC | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Duran Vega, Sergio | | | 2069 | CRC | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Esquivel, Jose Edmond | | | 1975 | CRC | 1.00 | 1 | 0.51 | 15 | 7.65 | | | Duran Vega, Andres | | | 1970 | CRC | 0.00 | 1 | -0.50 | 15 | -7.50 | | | Brenes, Juan Carlos | | | 1949 | CRC | 0.00 | 1 | -0.53 | 15 | -7.95 | |
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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