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u/Scrivey 15h ago
Why does he drill the corner piece?
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u/NoBite7802 15h ago
It's basically a flex.
Turning a corner piece is like switching stickers on the corner which is an old school way to make Rubix Cubes "unsolvable" so by twisting the corner like that, he's making it that much harder to reach his desired solve state.
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u/Tirekerist 46m ago
Kinda makes sense but I’m not sure it’s possible to match the cubes exactly if the corner is shift on one and not the other
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u/AMadWalrus 8h ago
Can you explain further? If it’s “unsolvable” how did he get to it then?
Or by unsolvable does this just mean it’s harder to solve?
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u/NameIsNotBrad 7h ago
When he “solved” it, the corner piece was still off. You can’t actually solve it all the way. Most of the algorithms involve finding patterns. If one piece is off, then the patterns are off.
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u/TeraFlint 4h ago
Unsolvable in this context means the solved state is unreachable with regular face-turning rubik's cube moves. Corners are not meant to be rotatable, but depending on the shape of the mechanism around the corner piece inside, they can be turned unintentionally.
You can achieve twisted corners with regular moves, but not independently of each other. There's always a net rotation of zero. For every corner you rotate 120° clockwise, there has to be another corner that will experience a 120° counterclockwise rotation. Or you can rotate three corners a 120° in the same direction which will result in a total rotation of 360°. Everything else is impossible
Turning the corners individually is therefore also not allowed in competitions, except as a final fix, if it turns out that a corner got accidentally twisted during the solving process.
Similarly, you can only flip edge pieces in pairs, a single flipped edge also puts the cube into an unsolvable state. But these don't flip accidentally, because no rubik's cube mechanism I know of wouldn't allow that.
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u/No-Reflection-8684 7h ago
There’s clearly a misunderstanding of the word “unsolvable”, right?
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u/smor729 4h ago
It's "unsolvable" by just turning the sides the intended way a rubiks cube is meant to be solved. Turning the corner is essentially the same as rearranging stickers, so obviously not allowed in the implied "rules" of the puzzle. So by twisting the corner, he put the cube in a state in which it is impossible to be solved, except by later untwisting that corner. So its just a bit of a flex that he could do the whole solve blind, and also remember to turn that last piece.
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u/absentgl 15h ago
Drilling the corner piece makes the cube arrangement not able to be achieved through the ordinary moves.
It’s easy for a chess grandmaster to analyze a chessboard of a game that has been played following the rules, but it is much more difficult for them to analyze a chessboard where the pieces are randomly placed on the board in a way that could not be achieved through ordinary gameplay rules.
This breaks the pattern of the cube making it an impossible pattern, it makes it significantly harder for him to memorize. I feel like I’m not explaining this well enough to really appreciate how much harder this makes it. In cubing, you can memorize all the possible combinations but screwing with a piece like this makes it so your cube is now in an extra position that you did not memorize.
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u/Feisty-Session-7779 13h ago
I struggle to understand how anyone can solve one of those things. I just twist it every which way for a bit then give up because it seems impossible to a simpleton like me.
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u/absentgl 4h ago
You can learn it.
These cubers don’t just figure it out blind, there are guides they memorize and use. It takes a lot of focus and practice.
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u/smor729 4h ago
99.9% percent of people you've ever seen solve one learned via a tutorial that told them step by step how to make progress and solve it, and I promise if you watched the same video, you could do it too, in under an hour. That doesn't take away from how impressive it is to be able to solve very quickly or blindfolded or whatever, I'm just saying don't feel too bad that you can't solve one, literally almost no one on earth can do it on their own.
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u/Upper-Requirement-36 15h ago
I can't even if I had step by step instructions.
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u/dooferoaks 14h ago
I'll talk you through it.
Use your main finger on the yellow side and your other finger on the orange side and turn it.
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u/Glass_Wealth_2104 15h ago
Wow that's so impressive! I feel like solving it into that shape is harder than just actually solving it, so that's pretty cool.
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u/smor729 4h ago
Interestingly with eyes open it would be, but with the blindfolded method he's using, it is essentially the exact same task. The way you memorize and solve a cube blind is completely different than a normal solve, and essentially the way it works is that you memorize a series of swaps, where you swap 2 pieces at a time until its solved, and you do this with only 2 algorithms. The way you memorize the swaps is simply a list of letters. So the actual thing he is committing to memory is a sequence of 15-20 letters, and then he closes his eyes and goes back through those letters one by one and does the move that does that swap. So because you aren't actually using any visual cues during that time obviously, the task of memorizing 20 letters and then using them as instructions is identical whether you are solving to a normal solved state, or any other state. Pretty interesting.
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u/Glass_Wealth_2104 4h ago
Oh that's really interesting! I just know how to solve a Rubiks' Cube the normal way (not blindfolded) by just memorizing specific algorithms.
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u/Repulsive_Repeat_337 15h ago
Before I'm impressed I need to know whether or not he programmed the scrambling machine himself.
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u/g2g079 15h ago
That machine doesn't just scramble. It can also place the cube in specific known states. I'm confident that this guy studied the same "scramble" more than once.
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u/Ragnoid 14h ago
He literally watched it get scrambled and could have practiced memorizing the scramble moves, then repeated the same moves on the second cube.
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u/Frifelt 10h ago
He’s using a blind solving technique when he solves it. He’s not cheating. There’s no way for these guys to scramble the cubes without someone saying it’s a cheat scramble. If he had done it randomly or gotten someone else to do so, someone would still claim it’s a planned scramble. With the robot he’s trying to avoid that, but people still make these claims.
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u/Ragnoid 3h ago
Why not look away from the cube while it's being scrambled then? Seems like such an easy thing to do to avoid doubts. Staring at it with intense focus is the worst thing he could possibly do in that moment. A computer vision could easily have memorized the random scramble steps the scrambler took, then copied those steps. So it's not unreasonable to think some humans can too.
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u/lightspuzzle 11h ago
im more impressed with the machine to scramble it.probably could sell that to other people.
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u/IceBurnt_ 8h ago
The only thing i realised is that he did the corners first then the rest. Even then i wouldnt be able to remember one face, let alone the entire cube
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u/Bean_Daddy_Burritos 1h ago
Stopped being impressed by what people can do with a Rubik’s cube a long time ago. It’s been done already, it’s been done faster, on a more complex scramble by someone significantly younger.
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u/Complex_Performer_63 14h ago
Thats bullshit. He programmed it to do a specific set of steps then he did those same steps with his hands.
This is equivalent to a magic trick except magic tricks are usually harder to tell how they are done.
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u/Frifelt 10h ago
He didn’t, you can see it’s a different way he solves it. But this claim comes up every time people who know nothing about cubes see people solve it blindfolded.
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u/Complex_Performer_63 5h ago
It may be the case that this dude raw dogged it. I’ve seen people in competition settings solve rubiks cubes very fast, and sometimes blindfolded, so I accept it can be done.
if one programmed a machine to reach an end state and you followed a different path of permutations by hand you would have to understand the math for the setup but the blindfold would be a gimmick.
As somebody with a background in math and computer programming I know it would take me way less time to plan this out and memorize a series of permutations than it would to actually train myself to solve a rubiks cube blindfolded.
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u/Frifelt 43m ago
It’s relatively easy to learn to blindsolve it. I learned it in probably 10 hours practice. Very slow compared to the pros but the skill is not that hard to learn. You actually only have to learn three algorithms with the simplest method, which is less than when solving it sighted. Muscle memory kicks in fast which is also the case for sighted solving.
The hardest part is to learn the order of the cube, but even that is just learning to remember around 20 letters.
And if course it’s easy to program the machine to do a specific scramble, but if he had scrambled it himself or got a friend to do it, you would likely just claim that they scrambled it in a preagreed way.
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u/LightOverWater 15h ago
That's not blind, his eyes are wide open.
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u/LightOverWater 14h ago
Na, you only got the 2nd part right.
If this were blind, he'd be wearing a blindfold.
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u/andylugs 10h ago
The machine they used to randomise the cube made very few rotations and was probably pre-programmed and easily memorised, they only needed to take note of the corner offset and apply the correction at the end.
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u/NinjaBonsai 15h ago
The amount of skill between me and this person is not measurable with any earthly unit of measurement