Items Invented by Dr. Ferdinand Maack
- Raumschach. The classical variant of three-dimensional chess: 5 by 5 by 5. (5x(5x5), Cells: 125) (Recognized!) Author: Bruce Balden and Hans L. Bodlaender. Inventor: Dr. Ferdinand Maack.
- Raumschach. Play this 3D variant from the early 20th century on Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: Dr. Ferdinand Maack.
- Raumschach. "... (German for Space Chess) is one of the first three-dimensional chess variants and the first to survive until present". Author: Jeremy Gabriel Good. Inventor: Dr. Ferdinand Maack.
- Raumschach (rules enforcing). Play Raumschach on Game Courier, with rules enforced. Author: Ben M Reiniger. Inventor: Dr. Ferdinand Maack.
- Raumschach - picture from the book. Pictures from book on Raumschach from beginning 20th century. Author: Hans L. Bodlaender. Inventor: Dr. Ferdinand Maack.
- Raumschach . The classical variant of three-dimensional chess: 5 by 5 by 5. Author: Robert Price. Inventor: Dr. Ferdinand Maack.