Alex Black Hole is based on a sliding-cube idea by Alex Polonsky. There are seven cubes around a sphere with grooves. The object is to scramble the puzzle by sliding the cubes, and then solve the puzzle.
Watch the YouTube video
Read at the Shapeways Forum
Read more at the Twisty Puzzles Forum
Please contact Oskar
directly if you are interested in obtaining a fully colored and assembled sample of this puzzle.