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Individual Calculations February 2018 |
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| Chaves Alfaro, Beatriz Total change: -16.60 | |   |
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| Campeonato Nacional Juvenil Sub20 2018 | Heredia | CRC | 2018-01-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1517 | 1344 | 0.00 | 3 | -0.83 | 20 | -16.60 | |
|  Castro Garcia, Ileana | | wc | 1581 | CRC | 0.00 | 1 | -0.20 | 20 | -4.00 | | | Serrano Marin, Jorge | | | 1537 | CRC | 0.00 | 1 | -0.25 | 20 | -5.00 | |  Tapia Alvarez, Alejandro | | | 1434 | CRC | 0.00 | 1 | -0.38 | 20 | -7.60 | |
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) | | |
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