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The twisty-puzzles tag is for all questions related to solving or discussing Rubik's Cube related puzzles.

2
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2answers
82 views

Is there a good method to solve this kind of Rubik's cubes?

In the office's kitchen we have a 3x3x3 Rubik's cube that is, well, unusual: instead of simple colours on the faces, there are pictures. While solving the rest of the cube is no different from ...
7
votes
5answers
844 views

How do I solve the top yellow layer of the Rubik's cube?

I used to solve the Rubik's cube using the standard algorithm. Recently, after a long time I tried doing it again. I did revisit the algorithm to solve the Rubik's cube, but I'm stuck in the top ...
3
votes
0answers
141 views

How to discover twisty puzzle algorithms that are not commutators?

I am reasonably competent at using commutators to find my own algorithms on twisty puzzles. Many good tutorials for this exist online. However, there are also algorithms that are not commutators, ...
6
votes
1answer
279 views

Illegal patterns for the Rubik's cube

It is known that if you take apart the Rubik's cube and then reassemble it randomly, you will end out in one of $12$ cases, among which only one is solvable. The others result in having (1) one piece ...
2
votes
2answers
590 views

Can two corners be swapped using commutators?

This question is about solving a Rubik's cube using commutators and conjugates - it is a question about the group theory of the Rubik's cube, rather than a "how do I" kind of question. This video ...
1
vote
1answer
193 views

Non-reduction methods for solving the 4x4 Rubik's cube

I have a 4x4 Rubik's cube (aka Rubik's Revenge), which I can solve by reducing it to a 3x3 and then solving the 3x3. However, this can result in "parity" cases, where a single edge of the 3x3 is ...
2
votes
1answer
530 views

3x3x5 Rubiks Cuboid: Swapping Adjacent Edges

I have a 3x3x5 cuboid in the position shown (all pieces correct except for the two edges you can see. The must be a parity issue, but I can't get around it whatever I try. The only parity issue that ...
9
votes
1answer
534 views

Square 1 Adjacent swap

I just got my first ever square one ( a Rubik's cube related puzzle ) and I have this case which I can't find any help on. An adjacent edge swap, with the equator solved. There is the parity ...
17
votes
3answers
829 views

Single solved state for Sudoku Pyraminx

(Not sure if this is the correct stackexchange, but I think it is.) I recently bought 10 QJ Pyraminxes with an ambitious idea for a mod in my head. After just the first step of modding I realized it ...
7
votes
1answer
339 views

Engel's Enigma Optimals

I'm implementing a Douglas Engel's puzzle, Color Wheels (reproduced with permission) and now I would like to check solutions of users. For those of you that don't know the puzzle, here you can see ...
17
votes
1answer
1k views

What is the name (and brand / year) of this puzzle?

First a bit of background. I'm a collector of twisty puzzles. I've been collecting them for almost 3.5 years now. Here is my current collection of 209 puzzles. As you may be able to tell by the ...
15
votes
2answers
1k views

Help with the name of this puzzle

When I was cleaning my basement I found one puzzle that my father gave me when I was a child. I really want to know the name of it! Could someone help me? The puzzle consist in 4 disks, and each ...
1
vote
5answers
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 ...
7
votes
1answer
598 views

How do I rotate edges on the Geared Mixup puzzle?

I've recently acquired a Geared Mixup puzzle, and have spent several hours trying to solve this particular problem. I've pretty much solved the puzzle. All centers, edges, and corners are in the ...
6
votes
1answer
674 views

Unlocking a curiously-geared combination lock

The image shows numbers on ring-dials on a curiously-geared combination lock, where the current setting is (3,3,3,3) and ring sizes are (5,7,8,11), inner to outer. The setting (0,0,0,0) opens the ...
13
votes
0answers
1k views

Is there a more efficient way to rotate the centre pieces on the Octo-Star?

I'm looking for a more efficient algorithm to rotate the center column of the Octo-Star puzzle 45 degrees. The situation below occurs when four properly-oriented edges are next to each other, ...
7
votes
3answers
24k views

How can I solve the Gear Cube Extreme?

The Gear Cube Extreme is another Mechanical Puzzle. I ordered it not so long ago and a friend of mine "accidentally" scrambled it. Now I want to solve it again but I have no idea how or even where to ...
12
votes
2answers
2k views

How to solve Oskar van Deventer's gear maze 2x2

One of Oskar van Deventer's puzzles is the gear maze 2x2.There are 4 gears connected together so if you move one gear all four gears rotate (two clockwise, the other two counter-clockwise).On the ...
5
votes
2answers
3k views

Is there an algorithm for the Rubik's 360?

Is there an algorithm to help me solve the Rubik's 360? Usually I just do it at random, but I rarely succeed.
10
votes
2answers
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 ...
2
votes
1answer
3k views

How do I solve Oskar van Deventer's Gear Shift puzzle?

Oskar van Deventer's Gear Shift is a somewhat difficult puzzle to figure out how to solve. The puzzle looks like this: You can see a video of it here. What is a simple, intuitive method for solving ...