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Individual Calculations February 2019 |
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| Mayorga Araya, Sofia Total change: 7.20 | |   |
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| Abierto Internacional Metropolitano Infantil U10 2018 | San Jose | CRC | 2018-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1142 | 1166 | 2.00 | 4 | -0.13 | 40 | -5.20 | |
|  Ramos Rodriguez, Daniel | | | 1086 | CRC | 0.00 | 1 | -0.61 | 40 | -24.40 | | | Hernandez Perez, Javier Francisco | | | 1041 | CRC | 1.00 | 1 | 0.33 | 40 | 13.20 | | | Ramirez Aguilar, Julian | | | 1151 | CRC | 1.00 | 1 | 0.48 | 40 | 19.20 | |  Carrera Nicholson, Carlos Enrique | | | 1289 | PAN | 0.00 | 1 | -0.33 | 40 | -13.20 | |
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) | | | | Campeonato Nacional Femenino 2019 | San Jose | CRC | 2019-01-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1541 | 1195 | 1.00 | 9 | -0.14 | 40 | -5.60 | |
| | Angulo Hernandez, Maria Jesus | | | 1406 | CRC | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Castillo Morales, Thais | | wm | 1595 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Gamboa Alvarado, Olga Leticia | | wf | 1595 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Salazar Gould, Melanie | | wf | 1595 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Hernandez Leandro, Aliza | | | 1304 | CRC | 0.00 | 1 | -0.35 | 40 | -14.00 | | | Diaz Charpentier, Kristel Meliss | | | 1591 | CRC | 1.00 | 1 | 0.92 | 40 | 36.80 | | | Marin Leon, Valeria | | wc | 1595 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Hernandez Alvarez, Tania Regla | | wm | 1595 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Rodriguez Arrieta, Maria Elena | | wm | 1595 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * 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) | | | | Campeonato Nacional Infantil Absoluto Sub10 2019 | San Jose | CRC | 2019-01-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1095 | 1195 | 3.00 | 4 | 0.45 | 40 | 18.00 | |
| | Ramirez Aguilar, Julian | | | 1151 | CRC | 1.00 | 1 | 0.44 | 40 | 17.60 | | | Salazar Artavia, Keylor | | | 1101 | CRC | 1.00 | 1 | 0.37 | 40 | 14.80 | | | Ramos Rodriguez, Daniel | | | 1086 | CRC | 0.00 | 1 | -0.65 | 40 | -26.00 | | | Hernandez Perez, Javier Francisco | | | 1041 | CRC | 1.00 | 1 | 0.29 | 40 | 11.60 | |
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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