Juerg Portenier
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| SUI-chT | 03/04/2001 | 2298 | Switzerland |
| SUI-chT | ??/??/2000 | 2131 | Switzerland |
| SUI-chT | 01/??/1999 | 2196 | Switzerland |
| SUI-chT | ??/??/1994 | 2250 | Switzerland |
Most Played Openings as White
| ECO | Opening | Games |
| A48 | King's Indian, East Indian defence | 2 games |
| E18 | Queen's Indian, old main line, 7.Nc3 | 1 games |
| C12 | French, MacCutcheon variation | 1 games |
| B20 | Sicilian defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| E11 | Bogo-Indian defence | 5 games |
| C00 | French defence | 2 games |
| C10 | French, Paulsen variation | 2 games |
| C06 | French, Tarrasch, closed variation, main line | 2 games |


Switzerland