Overview
Genre
| 3# | 2 | Overview | Omit | Problems |
| n# | 1 | Overview | Omit | Problems |
Authors
| Johner, Hans | 3 | Overview | Omit | Problems |
Sources
| Schweizerische Schachzeitung | 2 | Overview | Omit | Problems |
| FIDE Album 1956-1958 | 1 | Overview | Omit | Problems |
| Kunstschach in der Schweiz | 1 | Overview | Omit | Problems |
| Neue Zürcher Zeitung | 1 | Overview | Omit | Problems |
Keywords
| Damenopfer | 3 | Overview | Omit | Problems |
| Sammlung Brian Stephenson | 2 | Overview | Omit | Problems |
| Springeropfer | 1 | Overview | Omit | Problems |
| Turmopfer | 1 | Overview | Omit | Problems |
| Zugzwang-Ziel | 1 | Overview | Omit | Problems |
| Hineinziehungsopfer | 1 | Overview | Omit | Problems |
| Läuferopfer | 1 | Overview | Omit | Problems |
| Linienöffnung | 1 | Overview | Omit | Problems |
| Bauernmatt | 1 | Overview | Omit | Problems |
Computer tested
| not C+ | 3 | Overview | Omit | Problems |
Cooked
| not cooked | 3 | Overview | Omit | Problems |
https://pdb.dieschwalbe.de/overview.jsp?expression=COMMENTDATE%3E%3D20220810+AND+K%3D%27Damenopfer%27+AND+A%3D%27Johner%2C+Hans%27