# Questions tagged [rubiks-cube]

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

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112 views

### God's number for 4x4 cube [closed]

The God's number for the 3x3 cube is already established and proven to be 20 moves. Is there any higher bound computed for the 4x4 fewest move bound, via brute force computation algorithms.
911 views

### Name of Rubik's Cube position with swapped corners & centers

What is this Rubik's Cube setup called? I tried to swap the corners and centers of each side. Is there a name for this?
581 views

### 1x1x1 Rubiks Cube Puzzle

The solved position of 1x1x1 Rubiks cubes as shown was shuffle rolled without moving outside the 4x4 puzzle grid. All cubes are similar with face opposite colors: red to magenta,green to yellow and ...
69 views

### How to fix swapped edges in a 5x5 rubik's cube

First time poster - I'm sorry if this is answered somewhere else, but I couldn't find it. I have a 5x5 Rubik's Cube in a similar situation to this previous post - entirely solved, except for a pair of ...
99 views

### Designing a new type of twisty puzzle

Recently, I was fiddling with my Rubik's cube and tried scrambling it only using R and U moves. I then tried to solve it using only R and U moves. I didn't use any cube rotations. It was an ...
64 views

### Two swapped edges [duplicate]

I have 4 solved sides and 2 swapped edges. For a visual example: yellow white, green and blue are solved, and the f2l for red and orange is done, as are the corners, but for red there is an orange ...
49 views

### is this 4x4 cube solvable? [duplicate]

Everything is in position except these two corners, but I can't seem to find a solution.
294 views

### How do I solve Ancient 3x3 Irregular Magic Cube

I recently bought this cube. Currently, it is jumbled. How do I solve it?
336 views

### Can you provide a hint on how to solve this Hex Cube puzzle?

I've been tackling this puzzle named "Hex Cube" which comes with the instructions "Can you decipher the message? You should be able to if you go back to basics and use a little bit of ...
124 views

### Way to calculate the total tetrad twist of a rubik's cube

I am working on an implementation of Thistlewaite's algorithm to solve a Rubik's cube and I am now facing the problem of tetrad twists. Thanks to this answer, I understand what they are and how they ...
133 views

### Rubik's Revenge: Double Parity

How do I solve this double parity? Can both be solved at once OR need to solve center parity first and then corner parity or vice versa
141 views

### Last layer, rotate 3 edges

Up until a few months ago I was happily solving my 4x4x4 cube, then, thanks to a medical thing, I've lost/forgotten a few algorithms. I've got all of them back except 1, rotating the last 3 edges. ...
260 views

### Can you solve this Rubik's cube from inside of it?

You have woken up to find yourself trapped in what appears to be a giant Rubik's cube. A Rubik's Cage I suppose. Bewildered, you take a look around (better video on imgur or just click the photo). ...
3k views

### Mathematical Proof of a Rubikās Cube

Has it been proven (or disproven) that, from a solved state, there exists a number āxā for any algorithm, such that you can perform said algorithm x times to get back to a solved state. I feel like ...
174 views

### 4x4x4 Error with single centre orientation

I have 4x4x4 with a pattern. It is possible to get a situation where one centre block needs to be rotated 90 degrees. I have seen only 2 other cases online, but neither have documented a concrete ...
243 views

### Rubik's M Slice Using Thumb

I've been cubing for a couple of years now, so I'm quite familiar with all the various finger tricks and different ways to move faces and slices. Most of the ones I came up with when I started were ...
64 views

### Algorithm for swapping all cube edges or corners cyclically (PLL)

What's the algorithm for this PLL case? In order words how can I swap the edges (or corners) in a cyclical way (like A or U perm, but with all edges or corners)?
1k views

### Rubik's Cube Photo Review

Recently, I saw this motivational picture (Clicky to embiggen): (source) Since I found the message somewhat confusing, I searched Google for more similar images. Can you tell what do all these ...
190 views

### Oriented Rubiks Cube 4x4 re-arrange center pieces

There are a lot solutions for oriented 3x3. They rotate all center pieces. I'm trying to solve oriented 4x4 with GabbasSoft Cube Demo. Luckily blue and green ...
210 views

### A rubik's cube that fights back

After the incidents of Skyfall, 007 remembered a quote Q had said when he was accessing Silva's Omega site : It's like solving a Rubiks cube that's fighting back. 007, intrigued by this statement, ...
83 views

### Rubik cube - the second cross [duplicate]

I don't know what I should do. My cube has some inverted faces (it is the Japanese format).
270 views

### Do stickerless cubes provide speedsolvers with an advantage?

In July 2015 the World Cube Association changed their regulations to allow the use of stickerless puzzles in speed solving. I'm curious whether or not that event changed the sport somehow. Are some ...
207 views

### Multiple solutions for Rubik's cube?

I got a novelty cube at as swag at a convention once; it was like a normal cube, but with slogans written on the squares of the cube. If you solved the cube, you could read the slogan. This got me ...
432 views

### On The Subject of Rubik's Cube

(This is part of a series of puzzles written for Timwi for a Secret Santa puzzle exchange, themed around various custom modules for the game Keep Talking and Nobody Explodes. No KTaNE knowledge is ...
109 views

### Reapply *some* stickers on scrambled cube

I have this weird cube which have some pieces printed on the plastic and some are detachable. The cube was scrambled not solved and it fell on the floor being cheap cube almost all detachable faces ...
141 views

### Looking for an old Rubiks cube algorithm

I learnt rubiks cube before the YouTube days from a blog. I do not find the algorithm anymore online but it is something like White cross White corners (except one) Second layer corners (except one) ...
102 views

### Bad white face after white cross in rubik's cube

I have observed while making white face after white cross, if one of the white corner which is faced such that it's white face is towards the white cross, but the corner is corner is in wrong position,...
199 views

### Can I swap two “yellow” corners on the same side?

The bottom two layers are solved, and the cross has been formed on the bottom layer. I am putting the corners in, ready to orientate them correctly, but I have two corners which need swapping. (The ...
57 views

### Flip edge in Equator layer but there is yellow in every edge in top layer

A way to solve this is to replace the flipped edge by a random block , but in my case all random block have yellow color, so if I swap than yellow will come in middle layer, which should not come ...
241 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 ...
104 views

### Randomly solving a rubikās cube with only one face given

Given only one face of the rubik's cube, is there any way to form the other faces randomly so we end up with valid solvable configuration? Letās suppose that I have an input which is only one face of ...
292 views

### What are the specific algorithms Feliks Zemdegs uses to solve a 3x3x3 Rubik's cube?

I apologise if this is not the right site to post this kind of question, but out of all SE sites this one yielded the most question concerning specific cubing algorithms (namely this, this, this, this ...
123 views

### Rubik's cube from solved to specific pattern

Say I don't want to solve Rubik's cube but I want the reverse: I'm having a solved Rubik's cube (all stickers in it's right position and orientation) and I want to go from this state to a specific ...
198 views

### How to get the final corners of a 4x4x4 in the correct position

I'm trying to solve a 4x4x4 rubiks cube. I've finished the middle and side pieces so I can solve it like a 3x3x3 but I'm stuck on the penultimate step - positioning the final corners. The instructions ...
65 views

### Twisted rubiks cube [duplicate]

I have a rubiks cube with two wrong corners. How should I twist it back to get the right orientation?
478 views

### IPG v5 or Numerical IPG, What's The Difference? (GAN356X)

So I recently bought the GAN356X IPG v5 (stickerless) off of Amazon. When I went to the Gan website, there were two options for GAN356X: IPG v5 and Numerical IPG. On the Gan website it doesn't really ...
2k views

### Worst way to solve Rubik's in one algorithm

If you apply the same algorithm over and over again the cube will be solved. I want to know what algorithm is the worst one (the one with the longest cycle) I have found RU (cycle of 60 times) I have ...
724 views

### Where can I buy a 4x4 Ghost Cube?

I have the standard 3x3 Ghost Cube, and I would like to get more sizes. On this page on ruwix.com there is an image for 2x2 through 7x7 Ghost Cubes, but I can't figure out where I can buy them. Does ...
85 views

### Rubiks 3x3 Cube Solution - an old method to relearn (3 corner rotation)

I am trying to relearn a method for solving the 3x3 Rubikās cube that I was taught many years ago by a departed relative ā it is for this reason that I want to relearn this method, eventhough it is ...
117 views

I want to make the pattern as shown in the images I get stuck at the last with two adjacent corners to be interchanged. How do I do this ?
323 views

### How to flip top row center pieces on a 4x4x4 Rubik's cube? [duplicate]

I'm trying to solve a 4x4x4 Rubik's cube by first reducing it to 3x3x3 and I'm stuck in the end. I've completed all sides, matched all corners, but two pieces remain and I can't figure out how to flip ...
345 views

### Peeled Rubik's Cube

Help! A [toddler / pet / washing machine] has peeled some of the stickers off my old off-brand Rubik's Cube. Can you still solve it and show me the result?
223 views

### 5x5 Rubiks Cube edge algorithm

I'm following the tutorial on Ruwix, and either they're making a mistake or I am. When solving the edges they give the image: This is my first attempt at a 5x5 and this step confused me for a long ...
832 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 ...
204 views

### Rubiks cube 2 look PLL - name of this algorithm?

I'm currently learning 2-look PLL and came across this pdf with some algorithms: https://www.cubeskills.com/uploads/pdf/tutorials/4-look-last-layer.pdf I went through and gave names to the algorithms ...
436 views

### Minimum effort to detect a solved Rubik's Cube

When writing a program to permute a Rubik's Cube and then subsequently detect whether it is solved or not, what is the absolute minimum amount of programmatic effort required to determine if the cube ...
161 views

### How to solve this Rubix cube? [duplicate]

Help!!!! Is this rubix configuration solvable? These are the only two pieces in the wrong place. If the answer is no, what pieces do I need to reconfig to make the cube solvable? Note that my kid ...
478 views

### Cube Scrambling

Take a normal 3x3 rubiks cube (the Classic unmodded cube). I know the WCA method for scrambling is to pick a random (valid) cube state and calculate a sequence of moves to go from solved to that state,...