Overview
Genre
| 2# | 28 | Overview | Omit | Problems |
| 3# | 2 | Overview | Omit | Problems |
Authors
| Oppenheimer, Otto | 21 | Overview | Omit | Problems |
| Heinemann, Siegfried | 2 | Overview | Omit | Problems |
| Marder, Moses | 2 | Overview | Omit | Problems |
| Ferber, Eugen | 1 | Overview | Omit | Problems |
| Sorensen, Johs. | 1 | Overview | Omit | Problems |
| Heinsfurter, L. | 1 | Overview | Omit | Problems |
| Munck, Laurits Andreas | 1 | Overview | Omit | Problems |
| Feigl, Maximilian | 1 | Overview | Omit | Problems |
Sources
| Aufbau (New York) | 30 | Overview | Omit | Problems |
| Deutsche Schachzeitung | 1 | Overview | Omit | Problems |
| Leipziger Tageblatt und Anzeiger | 1 | Overview | Omit | Problems |
| Pesti Naplo | 1 | Overview | Omit | Problems |
| Wiener Hausfrauen-Zeitung | 1 | Overview | Omit | Problems |
Keywords
| Aristokrat | 2 | Overview | Omit | Problems |
| Gib-und-Nimm-Schlüssel | 1 | Overview | Omit | Problems |
| Sammlung Brian Stephenson | 1 | Overview | Omit | Problems |
| Springerrad | 1 | Overview | Omit | Problems |
| symmetrische Position | 1 | Overview | Omit | Problems |
| symmetrisches Spiel | 1 | Overview | Omit | Problems |
| unlösbar | 1 | Overview | Omit | Problems |
Computer tested
| C+ | 17 | Overview | Omit | Problems |
| not C+ | 13 | Overview | Omit | Problems |
Cooked
| not cooked | 29 | 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+A%3D%27Gross%2C+Otto%27+AND+S%3D%27Aufbau+%28New+York%29%27