Rubiks cube

[antp]

That sounds cool I need to get one of those for my girlfriend she is sudoku made and i can play with it as well in the proper way . As it has four faces in a rotion it can't work that you don't line up to matching numbers like with the 2d grid that would make it really hard

[stet]

I've just seen a sudoku cube

I solved one of these for a friend at work. It took a bit more time then normal, about 10 minutes or so because I had to start over a few times. It could have been a much more difficulty puzzle but the orientation of the numbers really helps as it becomes obvious when some pieces don't belong together. Another thing to note is that these cubes don't really follow all of the sudoku rules, they only apply to a single face at a time. To really follow the sudoku rules, as you follow a row or column of numbers around the puzzle, from face to face, you should not have any repeated numbers either. But there are only 9 numbers and following a row or column all the way around the puzzle gives you 12 places so this just can't work.

Now along that line of thinking, I'm actually planning out a version of this kind of puzzle where orientation won't matter. And I'm not just stopping there, no, what I'm making will be much much harder for another reason. I'm going to make it work with all the rules...

I'm just devious when it comes to this kind of thing.

[cornettracing80]

so once you learn the rubiks "moves" to get the squares where you want them ,it becomes no challenge right?..i read a post about these moves....and how you handle the puzzle right?..i saw a kid and he was moving it really quickly but not holding it the way most hold the puzzle ...like ..he didnt turn the top layer like opening a jar of jelly...more like flipping it with one finger....hows about instead of bragging times you guys teach us some of those techniques...we are all friends here....

[Z3r0San1ty]

I've just seen a sudoku cube

I solved one of these for a friend at work. It took a bit more time then normal, about 10 minutes or so because I had to start over a few times. It could have been a much more difficulty puzzle but the orientation of the numbers really helps as it becomes obvious when some pieces don't belong together. Another thing to note is that these cubes don't really follow all of the sudoku rules, they only apply to a single face at a time. To really follow the sudoku rules, as you follow a row or column of numbers around the puzzle, from face to face, you should not have any repeated numbers either. But there are only 9 numbers and following a row or column all the way around the puzzle gives you 12 places so this just can't work.

Now along that line of thinking, I'm actually planning out a version of this kind of puzzle where orientation won't matter. And I'm not just stopping there, no, what I'm making will be much much harder for another reason. I'm going to make it work with all the rules...

I'm just devious when it comes to this kind of thing.

Sudoku cube was a pain I had one of them and tried to use the theory of the rubix cube methods to get the numbers where they needed but could only do thatt with the top and first layer basically heh

[stet]

so once you learn the rubiks "moves" to get the squares where you want them ,it becomes no challenge right?..i read a post about these moves....and how you handle the puzzle right?..i saw a kid and he was moving it really quickly but not holding it the way most hold the puzzle ...like ..he didnt turn the top layer like opening a jar of jelly...more like flipping it with one finger....hows about instead of bragging times you guys teach us some of those techniques...we are all friends here....

What that kid was doing is often referred to as “finger tricks”. For starters, you need a well tuned and lubricated cube to do this. The standard Rubik’s Cube that you can buy at most stores may not be good enough. What many use are Chinese DIY (do it yourself) kits which are made from different plastics which seem to slide against each other better. Also, these DIY cubes have adjustable springs under each of the center caps so that you can tune them. I have a white DIY type A cube that is wonderful for this kind of thing. After that, the movements are just practice.

As far as solving goes, there are many levels of techniques that you can learn. I only know a basic technique. I solve the top layer intuitively and then the 4 edge pieces of the middle layer using a single simple move that I figured out long ago. The last layer is where things get interesting. The technique that I used does this layer in 4 steps. I first orientate the 4 edge pieces. This can take 1 or 2 movement cycles (there are only 4 patterns that they can be in). I then reposition them by swapping 2 of them. Because the movement cycle that I know only swaps 2 of the pieces I may have to do it more than once. I then reposition the corner pieces by using a movement cycle that repositions 3 of them at a time in either a clockwise or counterclockwise manner. And of course if they are all out of position then I may have to perform this more then once. Finally I orientate the corner pieces, 2 at a time.

This works every time, but as you can imagine there is a lot of wasted movements for the sake of only requiring to know a few movement cycles. People who solve the puzzle in under 20 seconds have learned/memorized dozens of very specific movement cycles for all of the different possible position/orientation cases of that final layer.

[Darwin]

I've never met anyone who solves the cube the same way I do. Maybe there is someone on this forum.

Completely self taught, I do the corners first. I then repeat the same move over and over again, forwards and backwards, that moves three cubes without disturbing the corners. Eventually it all falls into place OR a very distinct two cubes out. From there I have a cumbersome set of moves that puts the cube back into the 3 cube pattern & voila!

SOund familiar to anyone else?

Used to be able to do a time of under two minutes with a well greased cube.

I must find one and see if I can get back into pactice. Cubes exploding everywhere when it's not quite lined up!

[cornettracing80]

thanks for the info you guys.....i have a magic trick where i show the cube mixed up...give it three moves,showing its still mixed up and i then toss it into the air...when i catch it,it is all solved......very easy principal for this trick and i think stet needs to own this magic trick since he is obviously a rubiks freak so here we go.
you will need a rubiks cube that is all solved..on one side tho you need to peel the stickers off,and reapply mixed colors to the one side only,now you have a cube with one side mixed up and the whole rest is solved...thats the "gaff"....to preform the trick you set the cube 3-4 moves out from the start position...this makes it look even more mixed up...you show the most mixed up parts explaining how its mixed,and how your not very good at them....while explaining how you never could solve these things the normal way you make the 3-4 moves keeping the side that is mixed (even when its solved) towards your "victim"...once you have got the cube back to where all sides but one are solved ,you use your grip on the cube to hide the solved bits from view...in apparent frustration you tell your spectator that you found a new way to solve these darned things with magic...at this point you toss the cube into the air ,in a flipping manner,i am sure you guys have tossed it around abit ya?...like that ...after a small amount of time of practice you will be able to catch it "mixed side ,palm down" everytime....you have to catch the cube so the mixed side is in your palm and solved sides are showing all around.....you then can rotate your wrist in a manner that looks like you are showing all sides of the cube....its fun,and as stupid as it may sound i get huge reactions to this trick..they all think the cube is remote controll or something ....best bet is to buy two cubes and make one.....i paid 35 $ for one cube at a magic shop,gaffed up already....2 cubes at the local store are 9$ apiece...

[stet]

I've just seen a sudoku cube

Now along that line of thinking, I'm actually planning out a version of this kind of puzzle where orientation won't matter. And I'm not just stopping there, no, what I'm making will be much much harder for another reason. I'm going to make it work with all the rules...

I just completed this cube and posted a topic about it in the Other Puzzles forum here viewtopic.php?f=12&t=2408&start=0&st=0&sk=t&sd=a

[Sean Adamson]

3x3 average 19.2secs
5x5 average 2mins 34.7secs

I've been to the UK Open 2 times now and am going again in November

[LouIsis]

Tired of trying to solve your rubiks cube?
Try this for a change:
http://www.drumondpark.com/rubikworld/101usesforarubikscube.php

[cornettracing80]