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Individual Calculations January 2009 |
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| Ulloa, Oscar Total change: 4.50 | |   |
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| III Internacional Bolsa de Valores | Santa Ana | CRC | 2008-09-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2080 | 1872 | 1.00 | 4 | 0.07 | 25 | 1.75 | |
|  Vives, David | | | 2061 | CRC | 0.50 | 1 | 0.25 | 25 | 6.25 | |  Solis, Efren | | | 2118 | CRC | 0.00 | 1 | -0.19 | 25 | -4.75 | | | Vega, Edwin | | | 2077 | CRC | 0.50 | 1 | 0.26 | 25 | 6.50 | | | Urbina Quiros, Edwin | | | 2065 | CRC | 0.00 | 1 | -0.25 | 25 | -6.25 | |
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 |
| 2098 | 1867 | 1.00 | 4 | 0.11 | 25 | 2.75 | |
| | Gonzalez, Bernal | m | | 2217 | CRC | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Hernandez Coto, Carlos | | | 2022 | CRC | 0.00 | 1 | -0.29 | 25 | -7.25 | | | Trejos, Enrique | | | 2175 | CRC | 1.00 | 1 | 0.86 | 25 | 21.50 | | | Vargas Serano, Pablo | | | 1978 | CRC | 0.00 | 1 | -0.35 | 25 | -8.75 | |
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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