Another of Ken Irvine's clever designs is this Rotational Cube (well not really a cube) The 3x4x4 Puzzle has a rather difficult to discover assembly. Not many moves but still a good challenge I think. I spent several evenings trying to put my copy together before I was forced to break down and ask Ken for the solution so that could get back to making them! Made from exotic hardwoods. Woods may vary slightly from photo.
Designed by: Ken Irvine
Approximately 2.25" x 2.25" x 1.75" (5.7cm x 5.7cm x 4.5cm)