GJ. Van Gelder
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Berlin-Holland m Telegraph | ??/??/1920 | 0 | Germany |
| NED-ch03 | 12/??/1919 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| C42 | Petrov's defence | 1 games |
| C12 | French, MacCutcheon variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C42 | Petrov's defence | 3 games |
| D93 | Gruenfeld with Bf4 e3 | 1 games |
| C44 | King's pawn game | 1 games |


Germany
Netherlands