# Questions tagged [rubiks-cube]

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

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### Unsolving a Rubik's Cube

A few days ago I picked up a solved Rubik's Cube that I had abandoned due to forgetting how to solve it, and started turning the faces to make nice patterns. A few minutes later, I'd made one - each ...
639 views

### How to get faster at 3x3

I am new to speed cubing and would like to figure out how to get faster at cubing based on my personal stats. Which aspect should I focus on? Which principles would be the most useful for me (...
2k views

### Is there a Rubik's scramble generator for the top layer only?

I want to practice solving the last layer, but the online scramblers I've seen are full cube only. Is there a Rubik's scramble generator for the top layer only?
2k views

### Why can't I have only one edge piece flipped on a 3X3 Rubik's cube? [duplicate]

I was using the beginner method to deliberately solve a 3X3 cube with one edge piece flipped. But, by the time I got to the top I discovered that I couldn't solve it with only one edge flipped. I had ...
482 views

### Magnetic Rubik's cube

Forming a 2x2x1 puzzle block, four 1x1x1 Rubik's cubes were modified to attach with one another in many ways by means of magnets and steel discs. Assemble them first so that all sides are showing the ...
28k views

### Solving Rubik's cube with one algorithm [duplicate]

I was wondering if it's possible to solve a Rubik's cube just iterating a single algorithm. It doesn't matter how complex the algorithm is (as long as it is less than 1 million moves), nor the time ...
4k views

### How can I twist opposite corners on the top face of a 3x3 cube?

I have solved the bottom white layer and the second layer. I have almost solved the top layer also, but I have not able to solve the corner pieces. Normally I can solve this with the below sequence: ...
4k views

### Last 2 pieces in Rubik

I followed a guide in how to solve the Rubik Cube however from time ti time I incurr in a case that is not covered by guide and I obtain an almost solved Cube except for 2 pieces. Seems also the ...
4k views

### What is the superflip on the 4x4x4 Rubik's cube?

The superflip is the state on a rubik's cube that require the most amount of moves to be solved. This is how it looks like: This state requires 20 moves (where half-turns counts as one move) to be ...
771 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 ...
49k views

### Simple 4x4x4 OLL parity algs?

I am learning to solve a 4x4x4 Rubik's cube and I think that the beginner OLL parity alg: (r U2 x r U2 r' U2 l U2 r' U2 r U2 r' U2 r') is a little too complex. ...
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?
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 ...
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.
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 ...
227 views

### Can any Rubik's cube solvable the regular way be solved if you alternate clockwise and counter-clockwise moves?

Let's say you a Rubik's cube that can be solved using a sequences of the 12 standard moves. Can it be solved if you are required to alternate between clockwise and counter-clockwise moves? If not, ...
238 views

### $4\times4\times4$ Rubiks cube Top Layer Issue

The only way i am able to solve is to jumble the whole cube again. If you know the way to solve pls give images or algorithm.
4k views

### How can I swap opposite corners on the same face of a 2x2 cube?

I've been experimenting with using Y-permutations to solve the 2x2 cube as described here. I ended up with the cube solved but for a single face where the opposite corners were swapped and disoriented....
37k views

### 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 ...
115 views

### Rubik's Scramble Search

Find a scramble which will produce a Rubik's cube fulfilling the following criteria which uses as few turns of faces as possible (Half-Turn-Metric): Each of the six faces show exactly three colours ...
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 ...
5k views

### What does it mean for a Rubik's cube to be perfectly scrambled, and how do you reach it? Without doing a checker board

Can you picture the perfectly scrambled cube? A Rubik's Cube that's perfectly scrambled? How would it look? Is it even possible? The quest for the Perfect Scramble is now upon us, and I challenge you ...
1k views

### What's the minimum number of sequences required to be learn to solve Rubik's cube in under half an hour?

I'm not asking for minimum moves. I know it's 20. I also know that it can be solved using only 1 sufficiently long sequence, but that would take ages to perform and it'd be nearly impossible to ...
581 views

### Is there some oil, grease, or substance I can find at home or in the garage or office to lubricate a speed cube?

I'm backpacking around Asia randomly so I won't be ordering anything online. But my speedcube has started to get a bit sticky and I'd like to lube it. So what are some easy to get alternatives to ...
214 views

### Can the state of Rubiks cube be determined by viewing it standing on the table (three sides)?

When the Rubiks Cube lies on the table you can see only three sides when you are not moving. Is it possible to calculate all pieces of the cube? In this position, there are only 7 pieces completely ...
7k views

### Rubik's cube swapping edge pieces middle layer diagonal

I was wondering if any one knew how to swap 2 diagonal edge pieces. Assume the white squares don't matter. Image generated on https://ruwix.com/online-rubiks-cube-solver-program/
12k views

### Rubik's cube 4x4 parity moves

Note: since asking this question I've purchased several other twisty puzzles and now regret taking the "look up algorithms online" approach to solving - in the end I get much more enjoyment from the ...
640 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 ...
2k views

### 4x4x4 Rubiks Cube strategy

With a 4x4x4 cube, it's possible to apply the same strategies as for a 3x3x3, either treating it as a 3x3x3 with a double-width middle or else as a 2x2x2 and just working on the corner "quadrants". ...
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?
317 views

### What kind of parity is this? (5x5)

I was just solving my 5x5 cube as always, but at the end I got this configuration and haven't found anything regarding this kind of parity. I am pretty sure all squares are correctly placed and no ...
508 views

### Rubiks cube Old Pochman method

I am trying to get a successful blindsolve using the Old Pochman method. I got my cubed scrambled, and I have no idea what to do with memorization when: I need to shoot to a corner that has the ...
263 views

### Is there a term for ZZ with CFOP F2L?

CFOP is my preferred method for speedcubing. Recently I thought of learning ZZ. Although recognition of bad edges was difficult, it made F2L a whole lot easier. However I feel that the basic CFOP-...
3k views

### Is it possible to scramble a Rubik's cube so that each face has no more than 2 squares of the same color?

So the complete conditions for this scrambled cube can be described alternatively as the following: Each face has less than 3 squares of the same color, which leads to 1a. Each face has 5 or 6 ...
818 views

### How to “pop one out” on a Rubik's Cube?

I am trying to follow this tutorial for solving a Rubik's Cube: https://ruwix.com/the-rubiks-cube/how-to-solve-the-rubiks-cube-beginners-method/. Step two says, among other things: If the white ...
861 views

### A simple solution for two awkwardly formed corners, is needed

I have been started to learn how to solve rubiks cube with Philip Marshall's ultimate solution. With this algorithm, I can easily solve cage and 6/8 corners, but however two corners comes up in an ...
2k views

### How to determine whether a Rubik's cube is solvable

I have a (nearly solved) Rubik's Cube: However, as you can see, one edge only is flipped, making it unsolvable. I have scrambled this unsolvable Rubik's Cube and now it looks like this: And What ...
701 views

### Good/Best/fast single algorithm for this situation. Half Superflip

How can I flip the edges in this picture in one algorithm if possible?
5k views

### Best cubing algorithm to learn after beginner's

I'm a new fan of cubing. I've recently bought a speed cube and for now I have only mastered the beginner's method and solve it in barely a minute and a half (which is way over what a speedcuber is ...
158 views

### Brute-force solver for Gear Octahedron - flawed method?

I am working on a program to brute-force a LanLan Gear Octahedron I bought second-hand (and scrambled). I have no background in "cubing" and just fancied solving the problem. The structure comprises ...
12k views

### How to swap the centre squares of a 4x4 Rubik's cube

I'm solving by 4x4 Rubik's cube (aka Rubik's revenge) by reducing it to a 3x3. However, I keep finding that once I've got all the edge pieces paired together I've accidentally moved the centre pieces ...
301 views

### Welcome to Cubing

After the critical feedback on the previous question, here is the new question... It so happened that one day, your nephew came to you and said that he wanted you to play a board game with you. You ...
326 views

### One corner rotated in 4x4x4

I know that in a 3x3x3 this should never happen (unsolvable state), but is the same true in a 4x4x4? (the rest of the cube is solved) The following answer seems to say that everything about the ...
351 views

### What are the minimum OCLL/PLL with ZZ method

I've seen on many sites the information that the LL on ZZ need a minimum of 6 OCLL and 14 PLL. But since the OCLL totals 7, and the PLL totals 21, I don't know which ones are "missing". Is it the ...
416 views

### Rubik's cube with no squares of same color nearby

It's easy to 'scramble' a Rubik's cube so no squares of the same color are touching each other. The moves U2 D2 R2 L2 F2 B2 accomplish that. A side with no squares of the same color nearby requires ...
1k views

### 2×2×2 rubik's cube corner is twisted!

Is there a way to solve it? If so how?! I have tried remixing it over and over but I haven't solved it yet :/
275 views

### Rubiks Cube 4x4x4 Top Layer Issue - One Edge Pair Flipped

I have trouble with that edge. Please give algorithm or images for solutions for turning it up so that I can form a cross.
875 views

### Can a single side of a Rubik's Cube legally contain all possible combinations of colors?

Considering a single side of a standard 3x3 Rubik's Cube, are all possible color combinations attainable? Or are there certain combinations that can only be made by breaking apart the device or moving ...