H. Heyboer
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| NED-ch op | 07/??/1977 | 0 |  Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| C56 | Two knights defence | 1 games |
| C01 | French, exchange variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
