Starts with the letter 'O'
- OctHex 146. Arranging the geometry of Tetrahedral Chess into an octahedron. (Cells: 146) By Charles Gilman.
|1 'Game' entry listed||1 'Three dimensional' entry listed|
|1 'Unorthodox shaped board' entry listed||1 'Board with hexagonal shaped cells' entry listed|
Total items listed: 1