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Individual Calculations November 2017 |
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| Coto Calderon, Juan Diego Total change: 21.20 | |   |
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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 |
| 1285 | 1345 | 3.00 | 4 | 0.65 | 40 | 26.00 | |
|  Sierra Berrocal, Gabriela | | | 1197 | CRC | 1.00 | 1 | 0.30 | 40 | 12.00 | |  Villegas Rodriguez, Jeremy | | | 1165 | CRC | 1.00 | 1 | 0.26 | 40 | 10.40 | | | Cabezas Solano, David Alejandro | | | 1636 | CRC | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Gomez Rivera, Felipe | | | 1140 | CRC | 1.00 | 1 | 0.24 | 40 | 9.60 | |
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) | | | | V Open Encuentro de Culturas Santa Ana 2017 | Santa Ana | CRC | 2017-10-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1554 | 1345 | 1.00 | 4 | -0.12 | 40 | -4.80 | |
| | Ramirez Madrid, Gerardo Alfonso | c | | 1745 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Porras Chavarria, Steve | | | 1745 * | CRC | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Semana Ramirez, Jerian | | | 1102 | CRC | 1.00 | 1 | 0.20 | 40 | 8.00 | | | Shih Gould, Danny | | | 1625 | CRC | 0.00 | 1 | -0.16 | 40 | -6.40 | | | * 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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