| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Richtig entscheiden, CD-ROM Für Windows 98 SE, ME, 2000, XP | 978-3-937549-31-6 (3-937549-31-5) | Jacob Aagaard | |
| Rook vs. Two Minor Pieces | 978-91-975243-7-7 (91-975243-7-9) | 2005 | |
| The Berlin Wall | 978-91-975244-7-6 (91-975244-7-6) | 2006 | Jacob Aagaard |