This can be just my impact from seeing their YouTube announcement video. Roice wrote a paper describing most of the higher than puzzles and how they exploaded from the first Rubik's dice. It absolutely was accepted as the duvet write-up from the April 2018 version in the journal Math Horizons. https://magic4dslot41527.ja-blog.com/36924018/not-known-facts-about-magic4d-slot