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Individual Calculations May 2012 |
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| Vargas Miranda, Diego Total change: 4.80 | |   |
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| Nacional Abierto 2011 Jorge van der Laat Ulloa | San Jose | CRC | 2012-02-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1927 | 1735 | 0.50 | 3 | -0.34 | 30 | -10.20 | |
|  Fernandez, Mario | | | 2076 | CRC | 0.00 | 1 | -0.12 | 30 | -3.60 | | | Esquivel, Jose Edmond | | | 1999 | CRC | 0.00 | 1 | -0.18 | 30 | -5.40 | |  Nunez Avendano, Manrique | | | 1705 | CRC | 0.50 | 1 | -0.04 | 30 | -1.20 | |
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) | | | | Boanerges Navarro In Memoriam 2012 Grupo A | Moravia | CRC | 2012-03-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1958 | 1735 | 2.00 | 6 | 0.50 | 30 | 15.00 | |
| | Duran Vega , Sergio | | | 2135 * | CRC | 0.00 | 1 | -0.08 | 30 | -2.40 | | | Moran, Mike | | | 1652 | CRC | 1.00 | 1 | 0.39 | 30 | 11.70 | | | Gamboa Alvarado, Leticia | | | 1839 | CRC | 0.50 | 1 | 0.14 | 30 | 4.20 | | | Martinez, Huberth | | | 1936 | CRC | 0.50 | 1 | 0.26 | 30 | 7.80 | | | Gutierrez, Oscar | | | 2080 | NCA | 0.00 | 1 | -0.11 | 30 | -3.30 | | | Urbina Quiros, Edwin | | | 2106 | CRC | 0.00 | 1 | -0.10 | 30 | -3.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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