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Individual Calculations January 2009 |
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| Castillo, Rommel Total change: 3.30 | |   |
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| III Internacional Bolsa de Valores | Santa Ana | CRC | 2008-09-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2158 | 2144 | 3.00 | 5 | 0.57 | 15 | 8.55 | |
|  Alvarez Hernandez, David | | | 1940 | CRC | 0.50 | 1 | -0.26 | 15 | -3.90 | | | Gonzalez, Bernal | m | | 2423 | CRC | 0.00 | 1 | -0.16 | 15 | -2.40 | |  Rodriguez, David | | | 1992 | CRC | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Solis, Efren | | | 2118 | CRC | 1.00 | 1 | 0.46 | 15 | 6.90 | | | Murillo, Alexis | m | | 2319 | CRC | 0.50 | 1 | 0.23 | 15 | 3.45 | |
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 |
| 2152 | 2119 | 2.00 | 5 | -0.35 | 15 | -5.25 | |
| | Gonzalez, Bernal | m | | 2432 | CRC | 0.50 | 1 | 0.36 | 15 | 5.40 | | | Arias Santana, Mauricio | m | | 2332 | CRC | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Needham, Bryan | | | 2022 | CRC | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Gomez Huertas, Stanley | | | 1978 | CRC | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Duran Vega, Sergio | | | 1998 | CRC | 0.50 | 1 | -0.16 | 15 | -2.40 | |
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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