Overview
Genre
| 3# | 1 | Overview | Omit | Problems |
| n# | 1 | Overview | Omit | Problems |
Authors
| Siers, Theodor | 2 | Overview | Omit | Problems |
Sources
| Tidskrift för Schack | 2 | Overview | Omit | Problems |
| Beispiele zur Ideengeschichte des Schachproblems | 1 | Overview | Omit | Problems |
| Das Schachproblem | 1 | Overview | Omit | Problems |
| Rätselvolle Schachaufgaben | 1 | Overview | Omit | Problems |
| Rösselsprünge im Schachproblem | 1 | Overview | Omit | Problems |
| The Problemist | 1 | Overview | Omit | Problems |
Keywords
| Springeropfer | 2 | Overview | Omit | Problems |
| Vorplan | 1 | Overview | Omit | Problems |
| Zugzwang-Ziel | 1 | Overview | Omit | Problems |
| Bauernmatt | 1 | Overview | Omit | Problems |
| Hinterstellung | 1 | Overview | Omit | Problems |
| Hinterstellungsschlüssel | 1 | Overview | Omit | Problems |
| Läuferopfer | 1 | Overview | Omit | Problems |
| Miniatur | 1 | Overview | Omit | Problems |
| Miniaturensammlung | 1 | Overview | Omit | Problems |
| Sammlung Brian Stephenson | 1 | Overview | Omit | Problems |
Computer tested
| not C+ | 2 | Overview | Omit | Problems |
Cooked
| not cooked | 2 | Overview | Omit | Problems |
https://pdb.dieschwalbe.de/overview.jsp?expression=COMMENTDATE%3E%3D20220810+AND+K%3D%27Springeropfer%27+AND+A%3D%27Siers%2C+Theodor%27