J. Heilig
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| ACCOM op | ??/??/1986 | 0 | Netherlands |
| ACCOM-B op | ??/??/1985 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| D03 | Torre attack (Tartakower variation) | 3 games |
| A80 | Dutch | 1 games |
| D21 | Queen's Gambit Accepted, 3.Nf3 | 1 games |
| D13 | Queen's Gambit Declined Slav, exchange variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B12 | Caro-Kann defence | 2 games |
| B01 | Scandinavian (centre counter) defence | 1 games |
| A12 | English, Caro-Kann defensive system | 1 games |
| D11 | Queen's Gambit Declined Slav, 3.Nf3 | 1 games |


Netherlands