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Individual Calculations November 2017 |
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| Segura Cordero, Ariel Total change: -45.20 | |   |
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| Campeonato Nacional Infantil Sub14 por Equipos 2017 | Cartago | CRC | 2017-09-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1072 | 1242 | 0.00 | 1 | -0.72 | 40 | -28.80 | |
|  Semana Ramirez, Jerian | | | 1072 | CRC | 0.00 | 1 | -0.72 | 40 | -28.80 | |
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) | | | | V Open Encuentro de Culturas Santa Ana 2017 | Santa Ana | CRC | 2017-10-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1500 | 1299 | 0.50 | 3 | -0.41 | 40 | -16.40 | |
| | Cabrera Chaves, Marco Antonio | | | 1699 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Porras Chavarria, Steve | | | 1699 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Semana Ramirez, Jerian | | | 1102 | CRC | 0.50 | 1 | -0.25 | 40 | -10.00 | | | * 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) | | |
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