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Edge-of-insanity-puzzle with three additional axes.
Insanity Plus looks exactly like the Edge of Insanity puzzle by the same inventor. The "Plus" is that there are three extra axes in this puzzle. When David Pitcher made Edge of Insanity, he noticed three "phantom axes" at each of the four-way vertices. They're phantom because there isn't really a slice there to allow rotation, but it appears as if there could be. So with Insanity Plus the inventor made those phantom axes real, and the puzzle now has a total of nine axes.
The new three axes does not further its jumbling properties.
Thank you to the following people for their assistance in helping collect the information on this page: David Pitcher.
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