T. H. O’Beirne was a puzzle inventor and author. One of his many delightful puzzles is referred to as O’Beirne’s cube. There are just 6 pieces, and the challenge is to assemble them into a cube. In fact, it can be put together as 6 different cuboids, or rectangular prisms. Accompanying instructions includes several other challenges for you to solve.
In walnut or maple hardwood, with clear finish. Assembled as a cube, it is 3″ on a side.