Jacobsohn
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Cologne-B | ??/??/1911 | 0 | Germany |
| Cologne-B2 | ??/??/1911 | 0 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| C50 | King's pawn game | 1 games |
| B16 | Caro-Kann, Bronstein-Larsen variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C42 | Petrov's defence | 2 games |
| D37 | Queen's Gambit Declined, 4.Nf3 | 1 games |


Germany