Larger Photograph (70.4K)
Larger Photograph (68.8K)
This is an unusual four-piece coordinate motion puzzle that has two assemblies using all four pieces and another using only three. The first assembly (Viktor calls it compact) shown in the top photograph has a tetrahedral cavity that is filled nicely with the traditional two-piece tetrahedron puzzle The two pieces of this "bonus" puzzle are shown in the middle photograph along with the second assembly (Viktor calls it chaotic) which is solid. The four pieces are identically shaped and are quite unusual. Both sides of the pieces are shown in the bottom photograph.