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A truncated 3x3x3 very closely related to the "Stumpfwürfel".
This puzzle is part of the series "Sharp Corners". All modifications of this series are made by truncating an 3x3x3 on its corners. These truncations are not regular as in the Half Truncated Cube. One dimension of the cut goes deeper than the other two. This half-regular style of truncating a corner was popularized by the Hexagonal Dipyramid. The cutting depths do have to go as deep as in the Hexagonal Dipyramid. The Triakis Tetrahedron is another example which uses half-regularly truncated corners too but with diffrent cutting depths.
The technical signature (8800101000) indicates where to cut the original cube.
Some members of this series are made solely by truncating. Others receive additional extensions to "delete" some of the remaining faces.
This modification uses four cuts for truncating the 3x3x3. The cuts are placed similarly but different to the Stumpfwürfel.
The extended variant with the same signature is the Stretchex.
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Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.
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