Jacob G Baay
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| AUS-ch | 04/??/1951 | 0 | Australia |
| NED-ch14 | ??/??/1948 | 0 | Netherlands |
| Amsterdam m4 | ??/??/1921 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| C90 | Ruy Lopez, closed (with ...d6) | 2 games |
| C60 | Ruy Lopez (Spanish opening) | 1 games |
| C14 | French, classical variation | 1 games |
| C73 | Ruy Lopez, modern Steinitz defence, Richter variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| E33 | Nimzo-Indian, classical, 4...Nc6 | 2 games |
| D47 | Queen's Gambit Declined semi-Slav, 7.Bc4 | 1 games |
| D13 | Queen's Gambit Declined Slav, exchange variation | 1 games |
| C65 | Ruy Lopez, Berlin defence | 1 games |


Australia
Netherlands