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A Square-1 with the shape of a prism and a parallelogram as its base.
This prism-shaped transformation of the Square-1 looks as if the square that served as base for the Square-1 got tilted parallel to the base. Four of the original pieces stood unchanged.
Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann, Lawrence Cuthbert.
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