Henny Van Oosterom
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| US op 101st | 08/05/2000 | 817 | United States |
| Cardoza US op | 08/??/1998 | 1144 | United States |
| IBM-B | 07/??/1968 | 0 | Netherlands |
| NED-ch21 | ??/??/1963 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| A22 | English opening | 3 games |
| A29 | English, four knights, kingside fianchetto | 2 games |
| A14 | English, Neo-Catalan declined | 1 games |
| A26 | English, closed system | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B06 | Robatsch (modern) defence | 2 games |
| A32 | English, symmetrical variation | 1 games |
| B46 | Sicilian, Taimanov variation | 1 games |
| A56 | Benoni defence | 1 games |


United States
Netherlands