Jens Ove Fries Nielsen
Jens Ove Fries Nielsen Repertoire with White pieces
| ECO | Opening | Games |
| A07 | Reti, King's Indian attack (Barcza system) | 23 games |
| A45 | Queen's pawn game | 21 games |
| D00 | Queen's pawn game | 19 games |
| A47 | Queen's Indian defence | 15 games |
Jens Ove Fries Nielsen Repertoire with Black pieces
| ECO | Opening | Games |
| B06 | Robatsch (modern) defence | 34 games |
| B07 | Pirc defence | 18 games |
| B01 | Scandinavian (centre counter) defence | 18 games |
| B08 | Pirc, classical (two knights) system | 16 games |

