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Individual Calculations April 2009 |
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| Ribeiro, Joao Pedro Costa Total change: -13.65 | |   |
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| Distrital jovens sub - 16 semi final de V. N. Famalicao | Famalicao | POR | 2008-12-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1647 | 1621 | 1.50 | 3 | 0.11 | 15 | 1.65 | |
|  Torres, Nelson Emanuel Pereira | | | 1718 | POR | 1.00 | 1 | 0.63 | 15 | 9.45 | |  Gomes, Rui Pedro De Sousa | | | 1575 | POR | 0.00 | 1 | -0.56 | 15 | -8.40 | | | Ribeiro, Marcos Costa | | | 1647 | POR | 0.50 | 1 | 0.04 | 15 | 0.60 | |
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) | | | | Distrital de Braga de sub-16 | Guimaraes | POR | 2009-02-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1618 | 1621 | 1.00 | 4 | -1.02 | 15 | -15.30 | |
| | Machado, Carlos | | | 1628 | POR | 0.00 | 1 | -0.49 | 15 | -7.35 | | | Meireles, Ana | | | 1578 | POR | 0.00 | 1 | -0.56 | 15 | -8.40 | | | Ribeiro, Joana | | | 1601 | POR | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Cruz, Joao Filipe | | | 1663 | POR | 0.00 | 1 | -0.44 | 15 | -6.60 | |
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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