Klaus Vieweg
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Oberliga Ost-B 0405 | 10/10/2004 | 2022 | Germany |
| Oberliga Ost-B 0304 | 10/??/2003 | 2023 | Germany |
| Oberliga Ost-playoff | ??/??/2003 | 1753 | Germany |
| Oberliga Ost-playoff | 05/??/2003 | 1753 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| D79 | Neo-Gruenfeld, 6.O-O, main line | 4 games |
| E68 | King's Indian, fianchetto, classical variation, 8.e4 | 4 games |
| D34 | Queen's Gambit Declined, Tarrasch, Prague variation, 7...Be7 | 2 games |
| E66 | King's Indian, fianchetto, Yugoslav Panno | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A43 | Old Benoni defence | 3 games |
| C54 | Giuoco Piano | 3 games |
| A57 | Benko gambit | 3 games |
| C73 | Ruy Lopez, modern Steinitz defence, Richter variation | 2 games |


Germany