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Rapid:
Individual Calculations December 2017 |
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| Porras Chavarria, Steve Total change: 18.20 | |   |
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| I Torneo Abierto Unidos por el Ajedrez | Alajuela | CRC | 2017-11-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1699 | 1787 | 5.00 | 7 | 0.91 | 20 | 18.20 | |
|  Elizondo Montero, Juan Luis | | | 1387 * | CRC | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Urbina Quiroz, Edwin | | | 2144 | CRC | 0.00 | 1 | -0.11 | 20 | -2.20 | | | Bolanos Diaz, Daniel | | | 1387 * | CRC | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Alfaro Guillen, Jose Raul | | | 2048 | CRC | 0.00 | 1 | -0.18 | 20 | -3.60 | | | Calvo Gutierrez, Luis Guillermo | | | 1872 | CRC | 1.00 | 1 | 0.62 | 20 | 12.40 | | | Arguedas Bolanos, Sharline | | | 1387 * | CRC | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Fonseca Robles, Anthony | | | 1671 | CRC | 1.00 | 1 | 0.34 | 20 | 6.80 | | | * 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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