Ernst1 Koch
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Laax Seniors op 4th | 08/22/2005 | 417 |  Switzerland |
| Ascona Seniors op 4th | 10/31/2005 | 708 | Switzerland |
| Bad Ragaz Seniors op 3rd | 03/07/2005 | 1127 | Switzerland |
Most Played Openings as White
| ECO | Opening | Games |
| D53 | Queen's Gambit Declined, 4.Bg5 Be7 | 2 games |
| D05 | Queen's pawn game | 1 games |
| E34 | Nimzo-Indian, classical, Noa variation | 1 games |
| D63 | Queen's Gambit Declined, Orthodox defence, 7.Rc1 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C62 | Ruy Lopez, old Steinitz defence | 1 games |
| D00 | Queen's pawn game | 1 games |
| D05 | Queen's pawn game | 1 games |
| D06 | Queen's Gambit | 1 games |
