Physical 3x3x3x3 hypercube and other physical 4d twisty puzzles [video] • Hacker News Board

Re: Physical 3x3x3x3 hypercube and other physical 4d twisty puzzles [video]

#31

Post by gws4d » Thu, Apr 06, 2023, 7:53 PM UTC

whatshisface wrote: post #15

ummonk wrote: post #7

Not exactly "physical" in the same sense as a normal Rubik's cube, since there isn't any physical restriction that makes illegal moves of taking it apart and putting it back together anymore difficult than performing legal moves.

The magnets are pretty complex, I am not sure if that's true. (I can see the imprints of at least four magnets per side.)

(person who made that video and just found this post through youtube analytics here) There are 8 magnets on each side of each cube, for a total of 48 per cube.

The puzzle can be assembled to invalid states, so yes it does come to the user to ensure that only allowed or "canonical" moves are used.

Re: Physical 3x3x3x3 hypercube and other physical 4d twisty puzzles [video]

#32

Post by gws4d » Thu, Apr 06, 2023, 7:55 PM UTC

animal_spirits wrote: post #4

Unbelievable. I used to be a collector of twisty puzzles and there was quite a few levels of challenging puzzles beyond my ability, but seeing this is just astounding! I only have barely a clue what each of the moves are doing but it makes me smile knowing someone cared enough to make this. Science has gone too far

(person who made that video and just found this post through youtube analytics here)

Thank you! It means a lot! Especially because I am just a high schooler...

Re: Physical 3x3x3x3 hypercube and other physical 4d twisty puzzles [video]

#33

Post by gws4d » Thu, Apr 06, 2023, 7:56 PM UTC

igmor wrote: post #5

gyro move kinds feel extremely artificial compared to the simplicity of all other canonical moves.

(person who made that video and just found this post through youtube analytics here)

Yes, it is a lot more complicated this is because of the nature of what the gyro is doing. The gyros are effectively a 4 dimension rotation of the puzzle that actually doesn't change the state of the puzzle, but just the orientation. This doesn't work out to be very pretty in 3d.