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A 3x3x3 half-regularly truncated on 4 corners.
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 (145000) 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.
The idea for this truncation was first conceived by Jürgen Brandt sometime before 2003 without the general concept of the Sharp Corners. It was published in an article here on twistypuzzle but did not came in reality until it was implemented in 2003 by the inventor who took the idea from the aforementioned article.
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