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Individual Calculations January 2020 |
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| Salazar Artavia, Keylor Total change: 12.40 | |   |
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| III Open Ciudad de Liberia Sub12 2019 | Liberia | CRC | 2019-12-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1211 | 1133 | 1.50 | 3 | 0.31 | 40 | 12.40 | |
|  Salazar Gould, Kristy Valeria | | | 1274 | CRC | 0.00 | 1 | -0.31 | 40 | -12.40 | |  Hernandez Perez, Javier Francisco | | | 1114 | CRC | 0.50 | 1 | -0.03 | 40 | -1.20 | | | Ramirez Aguilar, Julian | | | 1245 | CRC | 1.00 | 1 | 0.65 | 40 | 26.00 | |
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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