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Rapid:
Individual Calculations December 2017 |
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| Espitia Torres, Mateo Total change: -3.20 | |   |
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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 |
| 1207 | 1377 | 2.00 | 3 | -0.16 | 20 | -3.20 | |
|  Segura Cordero, Ariel | | | 1254 | CRC | 1.00 | 1 | 0.33 | 20 | 6.60 | | | Sandi Quiros, Deborah | | | 1125 | CRC | 0.50 | 1 | -0.31 | 20 | -6.20 | |  Jimenez Navarro, Diego | | | 1241 | CRC | 0.50 | 1 | -0.18 | 20 | -3.60 | |
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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