Real Piece

Any piece which relates to a non-zero volume in all of 3D space (can be infinite volume) created by the cut planes which define the puzzle. Below are some examples.

Real pieces found in a Corner Turning Cube

Real pieces found in an Edge Turning Cube

Real pieces found in a Face Turning Dodecahedron

Real pieces found in a Corner Turning Dodecahedron

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Real pieces found in an Edge Turning Dodecahedron