Peek Cube is a Tribute to Carl Hoff's Window Real 5x5x5
. Peek Cube is a spherical 3x3x3 surrounded by a 5x5x5 cube. Peek holes in the outer 5x5x5 enable you to see the state of the inner 3x3x3.
Watch the YouTube video
Read at the Shapeways Forum
Read more at the Twisty Puzzles Forum
Please order a 3D-printed do-it-yourself puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or contact Oskar
directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.