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Individual Calculations October 2008 |
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| Cabrera, Marco Antonio Total change: 55.15 | |   |
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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 |
| 2115 | 2047 | 4.00 | 6 | 1.57 | 25 | 39.25 | |
|  Carvajal, Jonathan | | | 2173 | CRC | 1.00 | 1 | 0.67 | 25 | 16.75 | |  Leandro, Jhonny | | | 2124 | CRC | 0.00 | 1 | -0.39 | 25 | -9.75 | | | Alfaro Rojas, Alfonso | | | 2116 | CRC | 0.00 | 1 | -0.40 | 25 | -10.00 | | | Solano, Agustin | | | 2015 | CRC | 1.00 | 1 | 0.46 | 25 | 11.50 | | | Solis, Efren | | | 2120 | CRC | 1.00 | 1 | 0.60 | 25 | 15.00 | | | Ugalde, Ronald | | | 2142 | CRC | 1.00 | 1 | 0.63 | 25 | 15.75 | |
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) | | | | IV Torneo Internacional de Ajedrez Alajuela 2008 | Alajuela | CRC | 2008-07-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2247 | 2065 | 1.50 | 4 | 0.42 | 25 | 10.50 | |
| | Granados, Carlos | | | 2170 | CRC | 0.50 | 1 | 0.14 | 25 | 3.50 | | | Perez, Osniel | | | 2268 | CUB | 1.00 | 1 | 0.76 | 25 | 19.00 | | | Alonso Garcia, Rene | m | | 2369 | CUB | 0.00 | 1 | -0.14 | 25 | -3.50 | | | Fonseca, Jose Luis | | | 2182 | NCA | 0.00 | 1 | -0.34 | 25 | -8.50 | |
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 | | Campeonato Nacional de Costa Rica 2008 Fase 2 | San José | CRC | 2008-08-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2192 | 2065 | 3.50 | 9 | 0.36 | 15 | 5.40 | |
| | Gonzalez, Bernal | m | | 2415 | CRC | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Vives, David | | | 2061 | CRC | 0.00 | 1 | -0.51 | 15 | -7.65 | | | Ruiz Blais, Sebastian | | | 2195 | CRC | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Murillo, Alexis | m | | 2319 | CRC | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Valdes, Leonardo | m | | 2408 | CRC | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Alfaro Rojas, Alfonso | | | 2181 | CRC | 1.00 | 1 | 0.66 | 15 | 9.90 | | | Hernandez Basante, Francisco | m | | 2254 | CRC | 0.50 | 1 | 0.25 | 15 | 3.75 | | | Vargas Serano, Pablo | | | 1829 | CRC | 1.00 | 1 | 0.20 | 15 | 3.00 | | | Machado Ramirez, Allan | | | 2068 | CRC | 1.00 | 1 | 0.50 | 15 | 7.50 | |
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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