William J Geus
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Australia op | ??/??/1973 | 2208 | Australia |
| Tel Aviv ol (Men) prel | 11/02/1964 | 0 | Israel |
| Tel Aviv ol (Men) fin-D | 11/02/1964 | 0 | Israel |
| AUS-ch | 12/??/1962 | 0 | Australia |
Most Played Openings as White
| ECO | Opening | Games |
| B25 | Sicilian, closed | 3 games |
| B26 | Sicilian, closed, 6.Be3 | 2 games |
| E88 | King's Indian, Saemisch, orthodox, 7.d5 c6 | 1 games |
| B08 | Pirc, classical (two knights) system | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A91 | Dutch defence | 3 games |
| A97 | Dutch, Ilyin-Genevsky variation | 1 games |
| C12 | French, MacCutcheon variation | 1 games |
| C04 | French, Tarrasch, Guimard main line | 1 games |


Australia
Israel