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Individual Calculations January 2009 |
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| Solis, Efren Total change: 1.50 | |   |
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| III Internacional Bolsa de Valores | Santa Ana | CRC | 2008-09-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2025 | 2118 | 2.50 | 4 | 0.02 | 15 | 0.30 | |
|  Ulloa, Oscar | | | 1872 | CRC | 1.00 | 1 | 0.19 | 15 | 2.85 | | | Duran Vega, Sergio | | | 1996 | CRC | 1.00 | 1 | 0.33 | 15 | 4.95 | |  Leandro, Jhonny | | | 2089 | CRC | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Castillo, Rommel | | | 2144 | NCA | 0.00 | 1 | -0.46 | 15 | -6.90 | |
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) | | | | Metropolitano 2008 | San Jose | CRC | 2008-12-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2277 | 2126 | 1.00 | 3 | 0.08 | 15 | 1.20 | |
| | Bermudez, Sergio | f | | 2176 | CRC | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Arias Santana, Mauricio | m | | 2332 | CRC | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Murillo, Alexis | m | | 2323 | CRC | 0.00 | 1 | -0.25 | 15 | -3.75 | |
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) | | |
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