Horst Mertens
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Canarias en Red prel 5th | 05/07/2004 | 785 | Germany |
| Canarias en Red prel 4th | 05/06/2004 | 808 | Germany |
| Canarias en Red prel 3rd | 05/05/2004 | 764 | Germany |
| Canarias en Red prel 1st | 05/03/2004 | 739 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| D00 | Queen's pawn game | 3 games |
| A81 | Dutch defence | 2 games |
| B07 | Pirc defence | 1 games |
| A40 | Queen's pawn | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B40 | Sicilian defence | 2 games |
| A46 | Queen's pawn game | 2 games |
| A43 | Old Benoni defence | 2 games |
| B22 | Sicilian, Alapin's variation (2.c3) | 2 games |


Germany