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Individual Calculations January 2018 |
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| Zeledon Perez, Edgar Total change: 90.40 | |   |
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| VIII Campeonato Panamericano Escolar de Ajedrez Sub 17 Absoluto 2017 | San Salvador | ESA | 2017-12-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1814 | 1806 | 6.00 | 9 | 1.56 | 40 | 62.40 | |
|  Nunez Giler, Fanny | | | 1577 | ECU | 1.00 | 1 | 0.21 | 40 | 8.40 | |  Herrera, Diego | | | 1770 | PAN | 0.50 | 1 | -0.05 | 40 | -2.00 | | | Sun Chin, Robert Patrick | c | | 2119 | PAN | 0.00 | 1 | -0.14 | 40 | -5.60 | | | Pirir S., Juan Jose | | | 1882 | GUA | 0.50 | 1 | 0.10 | 40 | 4.00 | | | Chaluja, Jose Antonio | c | | 1791 | PAN | 1.00 | 1 | 0.48 | 40 | 19.20 | | | Ramirez Toledo, Ayleen Maribel | | | 1533 | MEX | 1.00 | 1 | 0.17 | 40 | 6.80 | | | Ruiz, Mishell | | wf | 1831 | ECU | 1.00 | 1 | 0.53 | 40 | 21.20 | | | Melara, Moises | f | | 2026 | ESA | 0.00 | 1 | -0.22 | 40 | -8.80 | | | Mejias Nunez, Rafael E. | | | 1793 | PUR | 1.00 | 1 | 0.48 | 40 | 19.20 | |
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) | | | | I Torneo Abierto de Liberia 2017 | Liberia | CRC | 2017-12-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1958 | 1806 | 2.00 | 4 | 0.70 | 40 | 28.00 | |
| | Herra Abarca, Josue Alberto | | | 1406 * | CRC | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Rocha, Maximiliano | f | | 2206 * | NCA | 1.00 | 1 | 0.92 | 40 | 36.80 | | | Alfaro, William | f | | 2170 | NCA | 0.00 | 1 | -0.10 | 40 | -4.00 | | | Castro Madrigal, Randall | | | 2048 | CRC | 0.00 | 1 | -0.20 | 40 | -8.00 | | | * 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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