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A fused cube, extended to become a 4x4 evil twins cube. After that it was shaped and stickered to look like the 4x4 mask cube.
Two 3x3 cubes were joined at their centers, creating a fused cube. Additional pieces were added to create a 4x4 shape which rotates only on two opposite faces at first. The puzzle will shapeshift, has bandaging and the shapeshifting will cause blocking of layers. From this 4x4 shape the idea came from M. Fox [martywolfman] to truncate the puzzle to resemble a 4x4 mask cube, but with a twist.
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