Overview
Genre
| Fairies | 27 | Overview | Omit | Problems |
| Retro | 21 | Overview | Omit | Problems |
| h# | 3 | Overview | Omit | Problems |
| 2# | 2 | Overview | Omit | Problems |
Authors
| Heinonen, Unto | 50 | Overview | Omit | Problems |
| Sphicas, George P. | 1 | Overview | Omit | Problems |
| Wicklund, Göran | 1 | Overview | Omit | Problems |
| Saukkola, Juha M. | 1 | Overview | Omit | Problems |
| Walter, Martin | 1 | Overview | Omit | Problems |
| Dupont, Nicolas | 1 | Overview | Omit | Problems |
| Schäfer, Ronald | 1 | Overview | Omit | Problems |
Sources
| Problemkiste | 12 | Overview | Omit | Problems |
| feenschach | 7 | Overview | Omit | Problems |
| Probleemblad | 7 | Overview | Omit | Problems |
| Die Schwalbe | 6 | Overview | Omit | Problems |
| Springaren | 6 | Overview | Omit | Problems |
| The Problemist | 5 | Overview | Omit | Problems |
| Suomen Tehtäväniekat | 4 | Overview | Omit | Problems |
| Tehtäväniekka | 3 | Overview | Omit | Problems |
| StrateGems | 3 | Overview | Omit | Problems |
| U.S. Problem Bulletin | 3 | Overview | Omit | Problems |
| Retros mailing list | 2 | Overview | Omit | Problems |
| Scobs lignea | 2 | Overview | Omit | Problems |
| ? | 1 | Overview | Omit | Problems |
| FIDE Album 1989-1991 | 1 | Overview | Omit | Problems |
| FIDE Album 1995-1997 | 1 | Overview | Omit | Problems |
| FIDE Album Annexe 1992-1994 | 1 | Overview | Omit | Problems |
| FIDE Album Annexe 1995-1997 | 1 | Overview | Omit | Problems |
| FIDE Album Annexe 1998-2000 | 1 | Overview | Omit | Problems |
| Ideal-Mate Review | 1 | Overview | Omit | Problems |
| Minimalkunst im Schach | 1 | Overview | Omit | Problems |
| Opfer-Opfer-Matt | 1 | Overview | Omit | Problems |
| Phenix | 1 | Overview | Omit | Problems |
| Tim Krabbé's Website | 1 | Overview | Omit | Problems |
Keywords
Pieces
| Grashüpfer | 2 | Overview | Omit | Problems |
| Lion | 1 | Overview | Omit | Problems |
Computer tested
| not C+ | 34 | Overview | Omit | Problems |
| C+ | 16 | Overview | Omit | Problems |
Cooked
| not cooked | 43 | Overview | Omit | Problems |
| cooked | 7 | Overview | Omit | Problems |
https://pdb.dieschwalbe.de/overview.jsp?expression=COMMENTDATE%3E%3D20220810+AND+NOT+K%3D%27Zielbahnung%27+AND+A%3D%27Heinonen%2C+Unto%27