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Individual Calculations October 2008 |
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| Campos, Roberto Total change: 10.40 | |   |
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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 |
| 2057 | 2040 | 4.50 | 8 | 0.71 | 25 | 17.75 | |
|  Needham, Bryan | | | 2047 | CRC | 1.00 | 1 | 0.51 | 25 | 12.75 | | | Carvajal, Jonathan | | | 2173 | CRC | 0.50 | 1 | 0.18 | 25 | 4.50 | |  Solis, Efren | | | 2120 | CRC | 0.50 | 1 | 0.11 | 25 | 2.75 | | | Ugalde, Ronald | | | 2142 | CRC | 0.50 | 1 | 0.14 | 25 | 3.50 | | | Solano, Agustin | | | 2015 | CRC | 1.00 | 1 | 0.47 | 25 | 11.75 | | | Vargas Serano, Pablo | | | 1829 | CRC | 0.00 | 1 | -0.77 | 25 | -19.25 | | | Barrios Zamora, Carlos | | | 2061 | CRC | 0.50 | 1 | 0.03 | 25 | 0.75 | | | Vives, David | | | 2070 | CRC | 0.50 | 1 | 0.04 | 25 | 1.00 | |
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) | | | NOTE: K factor changed | | IV Torneo Internacional de Ajedrez Alajuela 2008 | Alajuela | CRC | 2008-07-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2102 | 2098 | 0.50 | 2 | -0.49 | 15 | -7.35 | |
| | Tiviakov, Sergei | g | | 2448 | NED | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Martinez, Luis Gerardo | | | 1756 | ESA | 0.50 | 1 | -0.38 | 15 | -5.70 | |
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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