Overview
Genre
| 3# | 2 | Overview | Omit | Problems |
Authors
| Keller, Michael | 2 | Overview | Omit | Problems |
Sources
| Deutsche Schachzeitung | 1 | Overview | Omit | Problems |
| Michael Keller. Ein Meister der Schachkomposition [Chlubna] | 1 | Overview | Omit | Problems |
| Rochade Europa | 1 | Overview | Omit | Problems |
| Schach-Aktiv | 1 | Overview | Omit | Problems |
Keywords
| Grimshaw | 1 | Overview | Omit | Problems |
| Nowotny | 1 | Overview | Omit | Problems |
| Sammlung Brian Stephenson | 1 | Overview | Omit | Problems |
Computer tested
| not C+ | 1 | Overview | Omit | Problems |
| C+ | 1 | Overview | Omit | Problems |
Cooked
| not cooked | 2 | Overview | Omit | Problems |