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Individual Calculations January 2018 |
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| Castro Garcia, Ileana Total change: 20.40 | |   |
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| I Copa Goicoechea 2017 | Guadalupe | CRC | 2017-11-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1622 | 1561 | 2.50 | 5 | 0.42 | 20 | 8.40 | |
|  Ramirez Marchena, Carlos Andres | | | 1640 | CRC | 1.00 | 1 | 0.61 | 20 | 12.20 | |  Castro Garcia, Alejandro | | | 1512 | CRC | 0.50 | 1 | -0.07 | 20 | -1.40 | | | Bogantes Robleto, Karina | | | 1686 | CRC | 1.00 | 1 | 0.67 | 20 | 13.40 | | | Solano Cordero, Jorge | | | 1633 | CRC | 0.00 | 1 | -0.40 | 20 | -8.00 | | | Ramirez Marchena, Carlos Andres | | | 1640 | CRC | 0.00 | 1 | -0.39 | 20 | -7.80 | |
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) | | | | Abierto Metropolitano 2017 | San Jose | CRC | 2017-12-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1689 | 1561 | 2.50 | 5 | 0.60 | 20 | 12.00 | |
| | Quesada Campos, Jordi Alessandre | c | | 1961 * | CRC | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Quiros Araya, Sebastian | | | 1345 | CRC | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Nunez Valverde, Jairo | | | 1875 | CRC | 0.50 | 1 | 0.36 | 20 | 7.20 | | | Huertas Gutierrez, Esteban David | | | 1302 | CRC | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Quiros Araya, Jose Pablo | | | 1961 * | CRC | 0.00 | 1 | -0.08 | 20 | -1.60 | | | * 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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