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Individual Calculations February 2019 |
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| Semana Ramirez, Brenda Total change: 51.20 | |   |
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| Abierto Internacional Metropolitano U14 2018 | San Jose | CRC | 2018-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1292 | 1137 | 2.50 | 5 | 0.84 | 40 | 33.60 | |
|  Diaz Charpentier, Kristel Meliss | | | 1537 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Briones Espino, Martin Daniel | | | 1489 | PAN | 0.00 | 1 | -0.11 | 40 | -4.40 | | | Lobo Jimenez, Marielys | | | 1202 | PAN | 1.00 | 1 | 0.59 | 40 | 23.60 | | | Rios Hernandez, Brandon | | | 1085 | CRC | 1.00 | 1 | 0.43 | 40 | 17.20 | | | Rojas Esquivel, Luis Julian | | | 1147 | CRC | 0.50 | 1 | 0.01 | 40 | 0.40 | | | * 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 Sub12 2019 | San Jose | CRC | 2019-01-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1248 | 1137 | 1.50 | 3 | 0.44 | 40 | 17.60 | |
| | Araya Tropper, Ariel | | | 1195 | CRC | 0.50 | 1 | 0.08 | 40 | 3.20 | | | Salazar Gould, Kristy Valeria | | | 1200 | CRC | 1.00 | 1 | 0.59 | 40 | 23.60 | | | Segura Cordero, Ariel | | | 1348 | CRC | 0.00 | 1 | -0.23 | 40 | -9.20 | |
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) | | |
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