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Individual Calculations January 2009 |
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| Urbina Quiros, Edwin 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 |
| 2111 | 2065 | 1.50 | 3 | 0.11 | 25 | 2.75 | |
|  Gonzalez, Bernal | m | | 2415 | CRC | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Ulloa, Oscar | | | 1872 | CRC | 1.00 | 1 | 0.25 | 25 | 6.25 | |  Bermudez Munoz, Alexander | | | 2045 | CRC | 0.50 | 1 | -0.03 | 25 | -0.75 | |
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) | | | | Metropolitano 2008 | San Jose | CRC | 2008-12-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2059 | 2078 | 1.00 | 2 | -0.05 | 25 | -1.25 | |
| | Vargas Serano, Pablo | | | 1978 | CRC | 0.50 | 1 | -0.14 | 25 | -3.50 | | | Carvajal Gorgona, Jonathan | | | 2140 | CRC | 0.50 | 1 | 0.09 | 25 | 2.25 | |
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) | | |
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