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Individual Calculations January 2020 |
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| Barboza Viquez, Martin Eduardo Total change: -42.80 | |   |
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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 |
| 1179 | 1490 | 1.50 | 3 | -1.07 | 40 | -42.80 | |
|  Hernandez Perez, Javier Francisco | | | 1114 | CRC | 0.00 | 1 | -0.91 | 40 | -36.40 | |  Salazar Gould, Kristy Valeria | | | 1274 | CRC | 0.50 | 1 | -0.28 | 40 | -11.20 | | | Cossio Carvajal, Bruno | | | 1150 | CRC | 1.00 | 1 | 0.12 | 40 | 4.80 | |
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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