Overview
Genre
| Fairies | 3 | Overview | Omit | Problems |
| h# | 1 | Overview | Omit | Problems |
Authors
| Heinonen, Unto | 5 | Overview | Omit | Problems |
Sources
| Problemkiste | 3 | Overview | Omit | Problems |
| Suomen Tehtäväniekat | 2 | Overview | Omit | Problems |
| Rochade Europa | 1 | Overview | Omit | Problems |
| Die Schwalbe | 1 | Overview | Omit | Problems |
| feenschach | 1 | Overview | Omit | Problems |
| Ideal-Mate Encyclopedia Vol.1 | 1 | Overview | Omit | Problems |
| Kegelschach [Ebert u. Wolfenter] | 1 | Overview | Omit | Problems |
| Minimalkunst im Schach | 1 | Overview | Omit | Problems |
| Phenix | 1 | Overview | Omit | Problems |
Keywords
| Schachschutz | 5 | Overview | Omit | Problems |
| Serienzüger | 4 | Overview | Omit | Problems |
| Minimal | 2 | Overview | Omit | Problems |
| Exzelsior | 2 | Overview | Omit | Problems |
| Fernblock | 1 | Overview | Omit | Problems |
| Idealmatt | 1 | Overview | Omit | Problems |
| Liniensperrung | 1 | Overview | Omit | Problems |
| Miniatur | 1 | Overview | Omit | Problems |
| Abzugsschach | 1 | Overview | Omit | Problems |
| Allumwandlung, schwarz | 1 | Overview | Omit | Problems |
| Bauernmatt | 1 | Overview | Omit | Problems |
| Circe | 1 | Overview | Omit | Problems |
| Entblockung | 1 | Overview | Omit | Problems |
| Ersticktes Matt | 1 | Overview | Omit | Problems |
| Mustermatt | 1 | Overview | Omit | Problems |
| Rundlauf | 1 | Overview | Omit | Problems |
| Schachschlüssel | 1 | Overview | Omit | Problems |
| Tempoverlust | 1 | Overview | Omit | Problems |
| Unterverwandlung | 1 | Overview | Omit | Problems |
| Unterverwandlung im Schlüsselzug | 1 | Overview | Omit | Problems |
| Zuglängenrekord | 1 | Overview | Omit | Problems |
| Selbstblock | 1 | Overview | Omit | Problems |
Computer tested
| C+ | 3 | Overview | Omit | Problems |
| not C+ | 2 | Overview | Omit | Problems |
Cooked
| not cooked | 5 | Overview | Omit | Problems |
https://pdb.dieschwalbe.de/overview.jsp?expression=A%3D%27Heinonen%27+AND+K%3D%27Schachschutz%27