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Individual Calculations January 2010 |
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| Solis Gaitan, Efren Total change: -47.70 | |   |
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| Memorial Rosa Castro | Moravia | CRC | 2009-08-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2064 | 2156 | 1.00 | 4 | -1.47 | 15 | -22.05 | |
|  Valdes, Leonardo | m | | 2399 | CRC | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Esquivel, Jose Edmond | | | 1975 | CRC | 0.50 | 1 | -0.24 | 15 | -3.60 | |  Garcia, Juan | | | 2015 | CRC | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Chaves Villalobos, David | | | 1868 | CRC | 0.00 | 1 | -0.84 | 15 | -12.60 | |
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) | | | | Costa Rican National Open 2009 | San Jose | CRC | 2009-11-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1948 | 2156 | 3.50 | 7 | -1.71 | 15 | -25.65 | |
| | Gamboa Alvarado, Leticia | | | 1756 * | CRC | 0.50 | 1 | -0.42 | 15 | -6.30 | | | Brenes, Juan Carlos | | | 1949 | CRC | 0.50 | 1 | -0.27 | 15 | -4.05 | | | Jimenez Esquivel, Greivin | | | 2006 | CRC | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Duran Vega, Andres | | | 1970 | CRC | 0.00 | 1 | -0.74 | 15 | -11.10 | | | Marin Leon, Bryan | | | 1765 | CRC | 1.00 | 1 | 0.09 | 15 | 1.35 | | | Castillo, Rommel | | | 2123 | NCA | 0.50 | 1 | -0.05 | 15 | -0.75 | | | Solano Lopaz, Royner | | | 2070 | CRC | 0.00 | 1 | -0.62 | 15 | -9.30 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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