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Individual Calculations October 2008 |
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| Urbina Quiros, Edwin Total change: 13.25 | |   |
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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 |
| 2064 | 2065 | 1.00 | 4 | -1.00 | 25 | -25.00 | |
|  Carvajal, Jonathan | | | 2173 | CRC | 0.00 | 1 | -0.35 | 25 | -8.75 | |  Aguilar, Luis | | | 1966 | CRC | 0.00 | 1 | -0.64 | 25 | -16.00 | | | Rodriguez, David | | | 1998 | CRC | 1.00 | 1 | 0.41 | 25 | 10.25 | | | Solis, Efren | | | 2120 | CRC | 0.00 | 1 | -0.42 | 25 | -10.50 | |
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) | | | | IV Torneo Internacional de Ajedrez Alajuela 2008 | Alajuela | CRC | 2008-07-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2275 | 2065 | 3.00 | 6 | 1.53 | 25 | 38.25 | |
| | Arias, Mauricio | m | | 2310 | CRC | 0.00 | 1 | -0.20 | 25 | -5.00 | | | Urbina, Ricardo | m | | 2265 | HON | 1.00 | 1 | 0.76 | 25 | 19.00 | | | Arias, Lemmys A | f | | 2342 | ESA | 0.00 | 1 | -0.17 | 25 | -4.25 | | | Prieto, Ernesto | | | 2156 | COL | 1.00 | 1 | 0.62 | 25 | 15.50 | | | Zepeda, Lorena | | wm | 2161 | ESA | 1.00 | 1 | 0.63 | 25 | 15.75 | | | Mitkov, Nikola | g | | 2415 | MKD | 0.00 | 1 | -0.11 | 25 | -2.75 | |
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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