What is God's number on a 4x4 Rubik's cube?

AvGalen said:
I have never been a big fan of 444fmc because I can really only do a very optimized reduction+avoidparity+333fmc. But I think my lowest ever was around 65 and most were much more like 80
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I'm impressed! 65 is amazing! And I believe an average of 80 is much better than most.

The algorithm I developed for MultiCuber is an "optimized reduction" (as you describe) which can solve the middles and pair edges (including correct parity) in about 30 moves and then uses the 3x3x3 algorithm I developed for my earlier robots and CubeStormer II to solve the rest in about another 20 moves.
 
KongShou said:
y u no rite can u solve faster than this thingy cos i can
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Yes, I realise that many people can solve the 4x4x4 much faster than this robot. Even my average time is about the same as MultiCuber 3 and I do not consider myself to be a speedcuber!

I have been working on the software algorithm on and off for about the last year... and this is the first robot to use it.

Perhaps I should focus on making the mechanics faster now too?!? ;)
 
IAssemble said:
Yes, I realise that many people can solve the 4x4x4 much faster than this robot. Even my average time is about the same as MultiCuber 3 and I do not consider myself to be a speedcuber!

I have been working on the software algorithm on and off for about the last year... and this is the first robot to use it.

Perhaps I should focus on making the mechanics faster now too?!? ;)
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multicubestormer pls
 
I'm talking about an application similar to acube for NxNxN cubes.

I feel rude just throwing this request at you, I should also say that I did enjoy the video :P
 
Kirjava said:
I'm talking about an application similar to acube for NxNxN cubes.

I feel rude just throwing this request at you, I should also say that I did enjoy the video :P
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Ah, I see what you mean.

Thanks for the request. I hope you won't consider me rude if I decline as I am not ready to share the algorithm just yet... :p

And thanks, I'm glad you enjoyed the video :)
 
And if anybody is interested, there is an interview where I talk a little about MultiCuber 3

 
Last edited by a moderator:
Ross The Boss said:
if the cube were to lock up, would the machene break or would it stop turning?

also, the title of this thread reminded me of those tootsie pop commercials.
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This mechanical design is geared down more than some of the others in order to be able to turn stiffer cubes (it has been used to solve some give-away cubes that typically are not as smooth to turn). However, it can still probably not apply enough torque to damage the cube or itself.

As with most of my designs, if the NXT senses that the motors have stalled for a short time while turning, it is programmed to try and recover by turning in the opposite direction by an appropriate amount. If that fails and it stalls again it will simply shut down the motors and report the failure. However, this is probably my most reliable design so far and has not jammed while turning the cube at all since I got it working. :)

Sorry about the title... but at least some of you decided it might be worth a look at the thread anyway!?! ;-)
 
IAssemble said:
This mechanical design is geared down more than some of the others in order to be able to turn stiffer cubes (it has been used to solve some give-away cubes that typically are not as smooth to turn). However, it can still probably not apply enough torque to damage the cube or itself.

As with most of my designs, if the NXT senses that the motors have stalled for a short time while turning, it is programmed to try and recover by turning in the opposite direction by an appropriate amount. If that fails and it stalls again it will simply shut down the motors and report the failure. However, this is probably my most reliable design so far and has not jammed while turning the cube at all since I got it working. :)

Sorry about the title... but at least some of you decided it might be worth a look at the thread anyway!?! ;-)
Click to expand...

the title is actually why i looked at it
 
Ross The Boss said:
i just counted 157. that is how i would do it in a speed solve. i didnt try to optimize.
Click to expand...

Thanks for the info. That seems to be around the level I expected for speed solves.

I was extremely impressed when AvGalen mentioned an average of about 80 and personal best of about 65 for 444fmc! :eek:
 
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