# Questions tagged [rubiks-cube]

For questions about the Rubik's Cube and its variations.

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### Rubik's cube with one disoriented corner [duplicate]

I have been trying to solve Rubik's cube using beginner's method provided here: https://ruwix.com/the-rubiks-cube/how-to-solve-the-rubiks-cube-beginners-method/ I ended up with just one last corner ...
602 views

### Turn 4x4x4 Rubik's Cube into 2x2x2 Rubik's Cube

Idea shamelessly stolen from this question. I have a 4x4x4 Rubik's Cube, but all I want is a 2x2x2 Rubik's Cube. Luckily, I also have an unlimited supply of small pieces of tape. Each piece of tape ...
2k views

### 3x3x3 Rubik's Cube Illegal State

After I learned how to solve a 3x3 Rubik's Cube and a 4x4 Rubik's Revenge, I began challenging myself to solve the cubes to different states rather than the normal solid sides. For instance, I'd solve ...
535 views

### Separating the Pieces of a Rubiks Cube

I recall coming across this problem in one of my classes senior year of high school. (We only did the first part). Easy (and probably somewhere on the internet) Taking a standard 3x3x3 Rubik's ...
1k views

### A closed path on the Rubik's cube

Is it possible to draw a closed path on the surface of a standard $3\times3\times3$ Rubik's cube such that the path traverses each of the $54$ little squares exactly once, and such that the path ...
3k views

### Turn 4x4x4 Rubik's Cube into 3x3x3 Rubik's Cube

I have a 4x4x4 Rubik's Cube, but all I want is a normal 3x3x3 Rubik's Cube. Luckily, I also have an unlimited supply of small pieces of tape. Each piece of tape can cover the face of two neighbouring ...
736 views

### Can a Rubik's cube be put in a position not solvable by Fridrich's algorithm?

I think today I have faced a bug on rubik's cube. As it should be, I followed the steps Cross and then F2L, instead of OLL algorithms, I used R'FRF' and three corner swapping moves to complete last ...
124 views

### Rubik's Cube Master Algorithm [duplicate]

I've been thinking about this question for a while, but I have no idea how to approach it. I don't know what the answer is. The question: What is the shortest finite set of moves that, when repeated,...
10k views

### How do I become a sub-30 cuber?

I am a sub-50 cuber right now. I am currently using the Fridrich method, I take about 2-5 secs to solve the cross and I am learning the 21 PLL algorithms. I am learning one or two PLL every day. I am ...
159k views

### What is the best method of scrambling a rubik's cube?

If I wanted to solve a physical Rubik's cube multiple times, for practice, what is the best, most random way, to scramble the solved cube? The best way I can think is to hold it behind my back and ...
430 views

### How do I solve this F2L case quickly?

I have been unable to find a solution for this f2l case. It takes about 3 seconds to do, and I do it really slowly. Basically, the f2l case is solved, but the edge is inverted. The way I do it right ...
137 views

### What (if any) is the maximum possible number of pieces ina Rubik's cube?

What (if any) is the maximum possible number of pieces in a Rubik's cube---27? 64? 125? 216? 343?...or does the maximum end with 125?
2k views

### Algorithm for a single diagonal on each face of the Rubik's Cube

Right now I am trying to get the following distorted position: On each face only one diagonal is solved and the rest of the cubes are a different colour than the diagonal. For example: If I am ...
236 views

### Another closed path on the Rubik's cube

Is it possible to draw a closed path on the surface of a standard $3\times3\times3$ Rubik's cube such that the path traverses exactly one diagonal of each of the $54$ little squares, and such that ...
852 views

### How Random does a 3x3x3 (or other rubik cubes) need to be in speed solving?

Is there a rule/method to know how "random" should the cube be when solving it? in order for it to be a "valid" score?
2k views

### Is solving the Rubik's cube face by face even possible?

Many methods, if not all, recommend solving it layer by layer, but is it actually possible to solve it face by face? If so, explain how you would do this, if not, prove it impossible.
2k views

### How many solvable permutations of the Rubik's cube exist where each color appears at least once on every side?

Every now and then, scrambling my Rubik's cube I find it in a state where every side has at least one tile in each of the six colors. For example here's a scramble I just did (obviously put through a ...
976 views

### 3rd layer dilemma

i've followed the beginner's method, i've got the superior facet correct, the 1st and the 2nd layer correct. But in the third layer i always invert the colors but only got one corner right as shown in ...
204 views

### Minimum number of stickers to inspect in a Rubik cube to define a scrambled position?

This is for a robotics solver using a real cube. How many facelets must the machine check to figure out the position of everything in a scrambled cube?
1k views

### rubik's cube inside a rubik's cube

Once I completed solving Rubik's cube, a different pattern came into my mind. It was- A B B A B B A C C Here, same letters represent same colors. So is it ...
8k views

### Maximal number of steps needed to solve 2x2x2 Rubik's Cube

What is the maximal number of steps that a computer (using the fastest algorithm) would need to solve an arbitrary 2x2x2 Rubik's Cube configuration? Are there any other known algorithms that will ...
801 views

### What is the equation to solve the puzzle box Super-CUBI 324 step

The Super-CUBI puzzle box takes 324 steps to open or close it, instructions. And uses a Trinary System. It must have a solution as it would be hard to remember all the steps to take to open it. But ...
3k views

### Question about a “sexy move” tutorial

I'm using this tutorial to learn solving the cube with "sexy move" - https://sites.google.com/site/cubetutorials101/3x3-rubik-s-cube/3x3-beginner. It all goes well until the final step where it says "...
505 views

### How many stickers need to be cycled on a Rubik's cube before the chance it's unsolvable drops below 11/12?

This is a question I'm actually looking for the answer to. It's known that when you swap individual pieces on a Rubik's Cube, the probability that afterwards it will be possible to solve is 1/12. ...
375 views

### How to cycle these 3 minicubes on a Rubik's cube?

Someone has fiddled with my Rubik's cube and messed it up only very minorly. Exactly 3 minicubes are out of place: the up-front, up-back, and down-front edge minicubes need to be cycled round. I ...
510 views

### What is God's Number for the Rubik's Picture Cube?

It's been well known for a few years now that every Rubik's Cube scramble can be solved in 20 moves. However, this is only for the case where the orientation of the centers is not taken into ...
5k views

### Solved Rubik's 3x3x3 - should I do the 4x4x4 next? [closed]

For years I have been trying to solve the 3x3x3. Over the last several weeks I was determined to do it. With the help of several online tutorials and video's I can now solve it. My average is ...
2k views

### 5x5x5 Rubik's Cube Smiley

I did some turning on my 5x5x5 Rubik's Cube and I now have the cube like on the image below. 4 times a smiley -_- and 2 times a solved plane. But I have no idea how ...
452 views

### What is the meaning of a “tetrad twist” in Thistlethwaite's algorithm?

I am having difficulty understanding the third stage of Thistlethwaite's algorithm. I am using http://www.jaapsch.net/puzzles/thistle.htm. The third stage has a factor of [8!/(4!4!)]2 *2*3. This ...
637 views

### What to do when the official Rubik's cube solving sequence breaks?

So, the official guide shows you exactly how to solve the white cross, first layer, etc. but on the second layer, assume you've completed every little square but one (and edge) and that there's 2 ...
4k views

### Rubik's cube 19 move Solution [closed]

All Rubik's cube positions can be solved in 20 moves or less; http://www.cube20.org/ What's one such position that requires 19 moves to solve, please give the faces, and the moves to solve.
5k views

### What is the maximum “minimum number of steps” needed to solve a rubiks cube?

If an algo X outputs the minimum "number of moves" (not the actual moves, just their count) to solve an input configuration, what's the maximum number ...
3k views

### How do I solve the C4Y 3x3x7?

I have been solving the Rubik's Cube 2x2x2, 3x3x3, 4x4x4 and 5x5x5, and because things are very similar I thought a 6x6x6 wouldn't be a challenge much. So I bought the C4U 3x3x7 - see image. What I ...