Ja Nielsen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Politiken Cup 13th | ??/??/1991 | 1568 | Denmark |
| Hastings Challengers 8990 | 12/??/1989 | 2074 | United Kingdom |
| Copenhagen op | 06/??/1989 | 1406 | Denmark |
Most Played Openings as White
| ECO | Opening | Games |
| D71 | Neo-Gruenfeld, 5.cd | 1 games |
| D02 | Queen's pawn game | 1 games |
| E85 | King's Indian, Saemisch, orthodox variation | 1 games |
| E84 | King's Indian, Saemisch, Panno main line | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A46 | Queen's pawn game | 2 games |
| B14 | Caro-Kann, Panov-Botvinnik attack, 5...e6 | 1 games |
| A25 | English, Sicilian reversed | 1 games |
| A80 | Dutch | 1 games |


Denmark
United Kingdom