Rubik's cube is a multicolored, three-dimensional puzzle that has challenged folks for decades. Some, though, have faced that challenge much better than others. The Daily Mail has a very brief story noting that Korean speedcuber SeungBeom Cho ("Steve") has broken his own world record. Solved in under 4.6 seconds! A video of the solution is imbedded in the article or you can see it directly on YouTube.
Having utterly mastered the ubiquitous 3x3x3 puzzle, maybe next he'd next like to take a shot at this 17x17x17 Puzzle? Or how about a 1000x1000x1000 puzzle? Of course, after such a heavy mental work out, it is important to also keep oneself in good physical shape, so it only makes sense to try one's hand at this impressive 3x3x3 puzzle.
(Score: 0) by Anonymous Coward on Wednesday November 08 2017, @01:01PM (1 child)
Yes.
For a few years already we've been at the level where it's mostly about luck.
As far as I know, speed-cubing generally needs on the order of a hundred moves to solve a cube.
If you're lucky, you may hit a state/pick a solution that only requires 70 moves.
Combine that with very fast hands, and you get to these ridiculous times.
Very soon, times that will never be beat will be achieved (simple physical limits, I guess similar to the 2 hour marathon limit).
I *think* you need at most 17 moves to solve the cube, if you use the solution with the least moves required.
Human brains can't easily compute those solutions for some reason.
(Score: 0) by Anonymous Coward on Wednesday November 08 2017, @05:00PM
Worst case positions require 20 moves, under the face-turn/half-turn metric (this counts any rotation of a single face as one move, including 180° rotation).
Under the quarter-turn metric the worst case is 26 moves (this counts each 90° rotation of a single face as one move).