Items Invented by Doug Vogel
- Chess on a 12 by 12 board. Orthodox chess but with additional squares around the setup. (12x12, Cells: 144) Author: Hans L. Bodlaender. Inventor: Doug Vogel.
- Chess on a 12 by 12 board. Doug Vogel has placed the standard 32 chess pieces in the center of a 12x12 board. Author: David Paulowich. Inventor: Doug Vogel.
- Chess on a 12 by 12 Board . Orthodox chess but with additional squares around the setup. Author: Peter Aronson. Inventor: Doug Vogel.