Overview
Genre
| 2# | 11 | Overview | Omit | Problems |
| 3# | 1 | Overview | Omit | Problems |
Authors
| Oppenheimer, Otto | 12 | Overview | Omit | Problems |
Sources
| Aufbau (New York) | 10 | Overview | Omit | Problems |
| Al Hamishmar | 2 | Overview | Omit | Problems |
Keywords
| Springerrad | 1 | Overview | Omit | Problems |
| unlösbar | 1 | Overview | Omit | Problems |
Computer tested
| not C+ | 12 | Overview | Omit | Problems |
Cooked
| not cooked | 11 | Overview | Omit | Problems |
| cooked | 1 | Overview | Omit | Problems |
https://pdb.dieschwalbe.de/overview.jsp?expression=COMMENTDATE%3E%3D20200919+AND+NOT+K%3D%27Hilfsr%C3%BCckz%C3%BCger%27+AND+NOT+CPLUS++AND+A%3D%27Oppenheimer%2C+Otto%27