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Individual Calculations January 2009 |
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| Solano Lopaz, Royner Total change: -20.25 | |   |
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| Metropolitano 2008 | San Jose | CRC | 2008-12-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1988 | 2103 | 0.50 | 2 | -0.81 | 25 | -20.25 | |
|  Needham, Bryan | | | 2022 | CRC | 0.50 | 1 | -0.11 | 25 | -2.75 | | | Brenes, Juan Carlos | | | 1953 | CRC | 0.00 | 1 | -0.70 | 25 | -17.50 | |
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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