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Rapid:
Individual Calculations December 2017 |
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| Barquero Alfaro, Alejandro Total change: 17.40 | |   |
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| I Torneo Unidos por el Ajedrez Sub14 2017 | Alajuela | CRC | 2017-11-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1322 | 1265 | 3.00 | 5 | 0.87 | 20 | 17.40 | |
|  Sandi Quiros, Andrey | | | 1375 | CRC | 1.00 | 1 | 0.65 | 20 | 13.00 | |  Frajman Kierszenson, Lior | | | 1307 | CRC | 1.00 | 1 | 0.56 | 20 | 11.20 | | | Sandi Quiros, Deborah | | | 1125 | CRC | 0.50 | 1 | -0.19 | 20 | -3.80 | | | Diaz Charpentier, Kristel Meliss | | | 1476 | CRC | 0.00 | 1 | -0.23 | 20 | -4.60 | | | Lopez Bustos, David | | | 1325 | CRC | 0.50 | 1 | 0.08 | 20 | 1.60 | |
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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