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Individual Calculations February 2018 |
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| Ballestero Araya, Humberto Total change: 27.20 | |   |
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| Campeonato Nacional Juvenil Sub18 2018 | Heredia | CRC | 2018-01-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1353 | 1171 | 2.50 | 6 | 0.68 | 40 | 27.20 | |
|  Rivera Gonzalez, Jose Alexis | | | 1571 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Jimenez Salas, Kristel | | | 1240 | CRC | 1.00 | 1 | 0.60 | 40 | 24.00 | |  Zeledon Perez, Edgar | | | 1571 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Diaz Calderon, Jahir | | | 1114 | CRC | 1.00 | 1 | 0.42 | 40 | 16.80 | | | Rosales Gonzalez, Jessica | | | 1149 | CRC | 0.50 | 1 | -0.03 | 40 | -1.20 | | | Mendez Moreno, Kevin Alberto | | | 1470 | CRC | 0.00 | 1 | -0.15 | 40 | -6.00 | | | * 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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