My son has discovered a harder puzzle than solving a 4x4 Rubik’s cube: reassembling an exploded 4x4 Rubik’s cube. Harder, and less fun.
@richardelwes I hate reassembling big cubes. I was at a competition on Saturday and I had an internal piece on my 4x4 pop right before I was scheduled to do my solves. Even getting that one piece back in was way more stressful than I would have liked.