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A Nightmare Cube with revealed bandaging.
The Nightmare cube looks like 3x3x3 but there is a 3x3x3 inside which was bandaged like Mefferts bandaged cube. Therefore it is very hard to see the puzzles real state.
Sweet Dream Cube reveals the internal mechanism of the puzzle. It still looks like a 2x2x2 but which move is blocked and which not can now be seen.
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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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