J. De Jong
| White | Black | |
|---|---|---|
| J. De Jong | R. Van Brug | View |
| J. De Jong | Hans Van Bekkum | View |
| J. De Jong | Oswald, Dr. Gschnitzer | View |
| Gerrit Hans Lambers | J. De Jong | View |
| Weyerstrass | J. De Jong | View |
| White | Black | |
|---|---|---|
| J. De Jong | R. Van Brug | View |
| J. De Jong | Hans Van Bekkum | View |
| J. De Jong | Oswald, Dr. Gschnitzer | View |
| Gerrit Hans Lambers | J. De Jong | View |
| Weyerstrass | J. De Jong | View |