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Individual Calculations February 2019 |
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| Miranda Villalta, Jose Pablo Total change: -45.20 | |   |
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| Abierto Internacional Metropolitano U14 2018 | San Jose | CRC | 2018-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1211 | 1094 | 0.50 | 2 | -0.22 | 40 | -8.80 | |
|  Alvarez Ugalde, Isaac | | | 1073 | CRC | 0.50 | 1 | -0.03 | 40 | -1.20 | | | Segura Cordero, Ariel | | | 1348 | CRC | 0.00 | 1 | -0.19 | 40 | -7.60 | |
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) | | | | Campeonato Nacional Infantil Absoluto Sub12 2019 | San Jose | CRC | 2019-01-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1248 | 1094 | 0.00 | 3 | -0.91 | 40 | -36.40 | |
| | Segura Cordero, Ariel | | | 1348 | CRC | 0.00 | 1 | -0.19 | 40 | -7.60 | | | Salazar Gould, Kristy Valeria | | | 1200 | CRC | 0.00 | 1 | -0.36 | 40 | -14.40 | |  Araya Tropper, Ariel | | | 1195 | CRC | 0.00 | 1 | -0.36 | 40 | -14.40 | |
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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