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Individual Calculations November 2017 |
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| Barboza Viquez, Martin Eduardo Total change: 72.40 | |   |
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| Campeonato Nacional Infantil Sub10 por Equipos 2017 | Cartago | CRC | 2017-09-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1167 | 1176 | 1.50 | 2 | 0.48 | 40 | 19.20 | |
|  Miranda Villalta, Jose Pablo | | | 1196 | CRC | 0.50 | 1 | 0.03 | 40 | 1.20 | |  Hernandez Perez, Javier Francisc | | | 1137 | CRC | 1.00 | 1 | 0.45 | 40 | 18.00 | |
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) | | | | V Open Encuentro de Culturas Santa Ana 2017 | Santa Ana | CRC | 2017-10-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1500 | 1176 | 2.00 | 5 | 1.33 | 40 | 53.20 | |
| | Rodriguez Chaverri, David | | | 1576 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Bolanos Diaz, Daniel | | | 1440 | CRC | 1.00 | 1 | 0.82 | 40 | 32.80 | | | Chaves Williams, Jose Andres | | | 1540 | CRC | 0.00 | 1 | -0.10 | 40 | -4.00 | | | Ruiz Coronado, Maykel | | | 1428 | CRC | 0.00 | 1 | -0.19 | 40 | -7.60 | | | Moran, Mike | | | 1517 | CRC | 1.00 | 1 | 0.88 | 40 | 35.20 | | | * 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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