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Individual Calculations April 2009 |
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| Ribau, Nelson Manuel Salvador Total change: -31.10 | |   |
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| V AEJ CHESS FIDE OPEN | S Joao da Madeira | POR | 2008-10-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1659 | 1690 | 1.50 | 5 | -1.25 | 25 | -31.25 | |
|  Ferreira, Jorge Joao Viterbo | | | 2040 | POR | 0.00 | 1 | -0.11 | 25 | -2.75 | |  Ribau, Nidia Salvador | | | 1553 | POR | 0.50 | 1 | -0.18 | 25 | -4.50 | | | Batista, Sandro Manuel Almeida | | | 1758 | POR | 0.50 | 1 | 0.09 | 25 | 2.25 | | | Barbosa, Carlos Manuel Ventura | | | 1411 | POR | 0.00 | 1 | -0.84 | 25 | -21.00 | | | Martins, Guilherme Pires Tavare | | | 1533 | POR | 0.50 | 1 | -0.21 | 25 | -5.25 | |
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) | | | NOTE: K factor changed | | III CARREGOSA CHESS FIDE OPEN | Carregosa | POR | 2008-10-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1682 | 1690 | 3.00 | 5 | 0.37 | 15 | 5.55 | |
| | Oliveira, Carlos Andre Ramalho | | | 2040 | POR | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Reis, Francisco Seabra Oliveira | | | 1463 | POR | 0.50 | 1 | -0.29 | 15 | -4.35 | | | Alves, Marta Sofia Beleza Santos | | | 1433 | POR | 1.00 | 1 | 0.18 | 15 | 2.70 | | | Pires, Gustavo Martins Pereira | | | 1988 | POR | 0.50 | 1 | 0.35 | 15 | 5.25 | | | Sa, Claudio Simao Carvalho Fari | | | 1488 | POR | 1.00 | 1 | 0.24 | 15 | 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) | | | NOTE: K factor changed | | C.D. Jovens Aveiro– Sub 20 | Aveiro | POR | 2009-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1740 | 1687 | 0.50 | 2 | -0.36 | 15 | -5.40 | |
| | Pires, Igor Tiago Duarte | | | 1860 | POR | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Ferreira, Susana Carolina Gonca | | | 1619 | POR | 0.50 | 1 | -0.09 | 15 | -1.35 | |
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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