Overview
Genre
| 2# | 2 | Overview | Omit | Problems |
| h# | 1 | Overview | Omit | Problems |
| n# | 1 | Overview | Omit | Problems |
Authors
| Mari, Alberto | 1 | Overview | Omit | Problems |
| Schweig, Geza | 1 | Overview | Omit | Problems |
| Blathy, Otto Titusz | 1 | Overview | Omit | Problems |
| Dawson, Thomas R. | 1 | Overview | Omit | Problems |
Sources
| The Chess Amateur | 4 | Overview | Omit | Problems |
| Valves and Bi-Valves | 1 | Overview | Omit | Problems |
| Arbeiter-Schachzeitung (Chemnitz) | 1 | Overview | Omit | Problems |
| FIDE Revue | 1 | Overview | Omit | Problems |
| Kurioses Schach | 1 | Overview | Omit | Problems |
| Schachminiaturen Zweizüger | 1 | Overview | Omit | Problems |
Keywords
| Unterverwandlung | 3 | Overview | Omit | Problems |
| Miniatur | 2 | Overview | Omit | Problems |
| Minimal | 2 | Overview | Omit | Problems |
| Sammlung Brian Stephenson | 1 | Overview | Omit | Problems |
| Umwandlung im Mattzug | 1 | Overview | Omit | Problems |
| Umwandlungswechsel | 1 | Overview | Omit | Problems |
| Miniaturensammlung | 1 | Overview | Omit | Problems |
| Exzelsior | 1 | Overview | Omit | Problems |
| Linienverstellung | 1 | Overview | Omit | Problems |
| Unterverwandlung im Schlüsselzug | 1 | Overview | Omit | Problems |
| Valve | 1 | Overview | Omit | Problems |
Computer tested
| C+ | 4 | Overview | Omit | Problems |
Cooked
| not cooked | 3 | 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+K%3D%27Unterverwandlung%27+AND+S%3D%27The+Chess+Amateur%27