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Vierzack
Above:Solved
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An Ultimate Skewb with uniform extension on four sides. Very similar to the Doppelkeil but independently invented.

After rebuilding (or better: indepent reinventing) the Small stellated dodecahedron Skewb the creator used the extensions for two other shape transformations: The trident and this variant. Compared with the Doppelkeil this is no convex solid as the gap between the tips were not filled.

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Contributors

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

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