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Fractured Tetrahedron
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A "fracture sliced" triakis tetrahedron, with four axes of rotation.

The Fractured Tetrahedron puzzle has the shape of the triakis tetrahedron which is one of the catalan solids. This solid is transformed into a puzzle with fracture cuts. It has four axes of rotation. Each axis is capable of 60� turns, but most often 120� turns must be used to avoid blocking adjacent axes. Image 10 shows a state in which a 60° turn is possible.

As with the Fractured Cube puzzle, it is not possible to assemble the Fractured Tetrahedron to achieve full symmetry. This sample has been assembled so that two vertices have one edge reversed, and two vertices have two edges reversed. This arrangement leaves two faces with a windmill pattern in the center, and two with an asymmetrical pattern in the center.

This puzzle poses a strong challenge to theoretic aspects. This puzzle does not change its shape. With respect to the axis system and the possible turns it can be viewed as a bandaged Skyglobe.
It can be considered as jumbling puzzle because it can't be unbandaged into the Skyglobe except by introducing infinitely small cuts. Skyglobe is a fudged puzzle. Therefore transforming this new puzzle into Skyglobe requires to remove a specific amount of volume. If this can be considered as "unbandaging" is yet unclear.

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Thank you to the following people for their assistance in helping collect the information on this page: David Pitcher.

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