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Individual Calculations November 2017 |
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| Coto Bonilla, Darian Total change: -33.60 | |   |
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| Campeonato Nacional Juvenil Sub18 por Equipos 2017 | Cartago | CRC | 2017-09-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1503 | 1691 | 3.00 | 4 | 0.07 | 40 | 2.80 | |
|  Shih Gould, Annie | | wc | 1591 | CRC | 0.50 | 1 | -0.14 | 40 | -5.60 | | | Duque Araya, Cristopher | | | 1518 | CRC | 1.00 | 1 | 0.27 | 40 | 10.80 | | | Duran Venegas, Oscar Alonso | | | 1330 | CRC | 1.00 | 1 | 0.10 | 40 | 4.00 | | | Castro Garcia, Alejandro | | | 1573 | CRC | 0.50 | 1 | -0.16 | 40 | -6.40 | |
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) | | | | V Open Encuentro de Culturas Santa Ana 2017 | Santa Ana | CRC | 2017-10-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1726 | 1692 | 1.00 | 4 | -0.91 | 40 | -36.40 | |
| | Calderon Brenes, Brandon | | | 1324 | CRC | 1.00 | 1 | 0.10 | 40 | 4.00 | | | Chinchilla Miranda, Eugenio | f | | 2092 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Fernandez Sibaja, Felipe J | c | | 2092 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Orozco Centeno, Melissa | | | 1396 | CRC | 0.00 | 1 | -0.85 | 40 | -34.00 | | | * 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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