Seriously Challenging – University Disc: Caltech Edition Review
At first I was doubtful that this was a legitimate counterpart to Rubiks but it definitely breaks the 3D problem down to a serious 2D challenge. At the senior level, It's like One has to see the complete solution in its entirety. I'm not sure anyone can solve it. Magnus, maybe.
Review by Shockway on
University Disc: Caltech Edition.