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Individual Calculations December 2017 |
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| Bosca, Valter Romano Total change: -45.20 | |   |
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| World Senior Championship 2017 over 50 | Acqui Terme | ITA | 2017-11-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1984 | 2000 | 2.50 | 9 | -2.26 | 20 | -45.20 | |
|  Sarno, Spartaco | m | | 2327 | ITA | 0.50 | 1 | 0.37 | 20 | 7.40 | |  Contin, Daniel | m | | 2272 | ITA | 0.00 | 1 | -0.17 | 20 | -3.40 | | | Karasmaki, Seppo | | | 1753 | FIN | 0.50 | 1 | -0.31 | 20 | -6.20 | | | Melkevik, Johannes | | | 1857 | NOR | 0.50 | 1 | -0.19 | 20 | -3.80 | | | Zimmermann, Curt | | | 1956 | AUT | 0.00 | 1 | -0.56 | 20 | -11.20 | | | Parrella, Alfredo | | | 2114 | ITA | 0.50 | 1 | 0.16 | 20 | 3.20 | | | Vieira, Alexandre Letizio | | | 1847 | BRA | 0.50 | 1 | -0.20 | 20 | -4.00 | | | Araya Umana, Carlos | | | 1872 | CRC | 0.00 | 1 | -0.67 | 20 | -13.40 | | | Cesar, Geovanny | | | 1859 | DOM | 0.00 | 1 | -0.69 | 20 | -13.80 | |
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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