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Individual Calculations September 2009 |
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| Ferreira, Jonas De Vargas Total change: -4.65 | |   |
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| Aberto do Brasil - Etapa Conceicao do Rio Verde | Conceicao do Rio Verde/MG | BRA | 2009-06-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1946 | 1771 | 1.50 | 5 | 0.05 | 15 | 0.75 | |
|  Saldano Dayer, Horacio | m | | 2121 | ESP | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Machado, Gilmar Dias | | | 1960 | BRA | 0.50 | 1 | 0.25 | 15 | 3.75 | |  Brandao, Evandro Alves | | | 2051 | BRA | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Gomes, Marco Tulio | | | 1890 | BRA | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Vilas Boas, Crisolon Terto | | | 1706 | BRA | 1.00 | 1 | 0.41 | 15 | 6.15 | |
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) | | | | IRT Virada Esportiva Santista de Xadrez | Santos/SP | BRA | 2009-06-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2054 | 1771 | 0.00 | 3 | -0.50 | 15 | -7.50 | |
| | Campelo, Leandro Fabricio | | | 2121 | BRA | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Deus Filho, Joaquim De | | | 1993 | BRA | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Mendonca, Mateus Nakajo | | | 2049 | BRA | 0.00 | 1 | -0.17 | 15 | -2.55 | |
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) | | | | Continental Absolute Champioship 2009 | Sao Paulo Chess Club/SP | BRA | 2009-07-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2010 | 1771 | 2.00 | 9 | 0.14 | 15 | 2.10 | |
| | Terao, Rodrigo Akira | | | 2171 * | BRA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Mariano, Marceley Martins | | | 2040 | BRA | 0.00 | 1 | -0.17 | 15 | -2.55 | | | Herbst Neto, Eugenio | | | 1973 | BRA | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Aoyama, Edmundo | | | 1963 | BRA | 0.00 | 1 | -0.25 | 15 | -3.75 | | | Haman, Muhammad | | | 1950 | BRA | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Martins, Vilker Germano | | | 2009 | BRA | 0.50 | 1 | 0.30 | 15 | 4.50 | | | Machado, Gilmar Dias | | | 1960 | BRA | 1.00 | 1 | 0.75 | 15 | 11.25 | | | Ferreira, Jose Carlos | | | 2013 | BRA | 0.50 | 1 | 0.30 | 15 | 4.50 | | | Pertuzatti, Daniel | | | 2011 | BRA | 0.00 | 1 | -0.20 | 15 | -3.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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