That is just my effect from seeing their YouTube announcement movie. Roice wrote a paper describing lots of the above puzzles and the best way they exploaded from the first Rubik's dice. It absolutely was approved as the quilt article during the April 2018 version on the journal Math Horizons. https://martineqtnt.newbigblog.com/43121173/a-simple-key-for-magic4d-slot-unveiled