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Individual Calculations October 2008 |
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| Duran, Sergio Total change: 1.75 | |   |
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| Campeonato Nacional de Costa Rica 2008 Fase 1 | Moravia | CRC | 2008-05-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2088 | 1977 | 0.50 | 2 | -0.20 | 25 | -5.00 | |
|  Vives, David | | | 2070 | CRC | 0.00 | 1 | -0.37 | 25 | -9.25 | | | Vega, Edwin | | | 2106 | CRC | 0.50 | 1 | 0.17 | 25 | 4.25 | |
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) | | | | IV Torneo Internacional de Ajedrez Alajuela 2008 | Alajuela | CRC | 2008-07-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2207 | 1996 | 0.50 | 1 | 0.27 | 25 | 6.75 | |
|  Salazar, Pablo | | | 2207 | CRC | 0.50 | 1 | 0.27 | 25 | 6.75 | |
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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