How Algorithms ACTUALLY Work on the Rubik's Cube
ฝัง
- เผยแพร่เมื่อ 18 พ.ค. 2024
- There are little elves in the cube that rearrange the stickers when you do algorithms.
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Lmao the only reason I learnt how to solve it was to impress people now I've fallen into the rabbit hole of speed cubing now lol
I hope you know that that’s definitely a good thing lol
Exactly the same 😂😂 what's your current best time
When I solved a cube in front of my colleague, he wanted to learn it as well just to have it done once. Now he has his own cube at work and he is getting faster slowly but surely ^^
I think speedcubing is a "hit or miss" hobby which you either find really interesting or you couldn´t care less.
Exactly the same here hahaha a Podcaster that I hear once said "find a nice hobby that will cost you some time and money", then I realize that cubing was mine lol
@@Ziglapig 12 sec and I average 20 sec
When I first started cubing the algorithms just seemed like magic.
Same pinch
True lol
Exactly
Same LMAO
I mean, they kinda are, we have no idea how they work, it's just that as you become more experienced with the cube you stop caring or noticing that you have no idea how it works, which is how we go about a lot of our life, honestly. We never learn how, say, our smartphone works, we just forget that we don't understand it.
4:39 "doesn't give you a satisfying reason Y it works" I see what you did there
LOL
oh didn't even notice that
@@bmp6633 "Y" as in "why"
doEsN'T GiVE YoU A sATisFYiNG REAsoN Y iT woRks. I re-see what you did there, looks like Jperm was dropping perms throughout the whole video
@@maxdiabolo6256 huh?
I’m actually very proud that I’ve successfully analyzed the T-perm before.
It was one of the first few PLLs ive ever learned 👍
You successfully analyzed me :)
Like Y Perm, it is just 2 olls out together, but R F’ F R cancels to become R2, so that is just what T Perm is
@@kamranhussain2210 its also a yperm but with the 2 parts swapped and cancelled
@@katherineberger2871 now solve 4x4 like a 2x2
Who else loves the fact he doesn’t do a minute long intro? He just jumps straight into the video 👍🏽
man it makes me happy to see ppl like him do things to entertain without boring us tf out in the process .... the quality is so good his vids got me into cubing
@@Tyty-ux9hw And he films with his phone and the quality is this good
3kliksphillip also does this. No long intros.
A friend of mine jumped straight into the bridge
"*In cubing we impress people with bigger words because just solviing a cube is not impressive enough*"-Jperm 2021
So you solve... Megaminx!!!
I know you!
Who is "you?"
@@saidholhujayev6863 capability master
We are good friends
Well ok then
Commutators: Do you trust me?
Dylan: With every cell of my body.
When I first started speedcubing wayy back on 2009, I tried to 'understand' the algorithm instead of simply 'memorizing' them, just like what you said in this video. Funny enough my first intuition for understanding the OLL & PLL algorithm was 'Destroy & Repair' instead of Commutator or Conjugate, and I've been training my cubing solely based on destroy & repair for about a year. At the peak of my skill, I could impress most of my peers using unconventional algorithm and 'shortcuts'. (In other words, just showing off)
Sadly, I have stopped cubing for a very long time because I have lost my initial motivation of doing speedcubing, which was to 'Impress other people'. If there is anything you can take from my experience... When you learn something new, don't do it just to 'impress other people'.
Brilliant TED Talk there 👏
And have you impressed at least 1 person?
@@philipgelinas I think I did... Yes at least 1 person. We used to always compete with each other. I don't remember why we stopped...
motivational
My corner permute is a destroy and repair
Whenever I spoke 2 myself about algorithms while solving a cube people were like "This dude is smarter than the entire human population!"
being a cuber makes u look so smart but in reality we sit here and think we’re stupid on the inside ;-;
@@bun2738 yes, but I'm ACTUALLY the DUMBEST of the human population
Same with me in school😂
glitch star HEY HEY HEY I SPOTTED UR COMMENT DUDE
@@chaselikesgravityfalls6859 YOOOOO WASSUP DUDE! Check chat ok?
I will have to agree that this guy's video quality is the best on youtube right now.
Fancy seeing you again, blobfish
Cubehead i think has better quality videos like in terms of resolution
@@5tuffz Cubehead has the best video quality while Jperm has the most interesting videos.
@@blobfish7875 Oh wow hi mate! ill give u a sub
@ImSus9 😅I wasn't talking about resolution i was talking about how good the video is in terms of editing and just how it looks so smooth and clean
I have analysed exactly what the U perm does because of how often I use it, and it is really impressive to see how intelligently the algorithm is made to swap 3 edges and nothing else.
hi dylan, i think i know why the 2 oll cases add up to a y perm. i imagine some years ago, when oll algs were being invented (with break and repair), someone noticed that if you do the first oll on a solved cube, you get the second oll. and once they solved the second oll, they noticed they had a different permutation of top layer pieces.
with a bit more experimenting, they learnt to use these 2 olls together to make one pll. i havent confirmed this anywhere but this history of y perm makes the most sense to me.
actually tperm is like like that too, and I discovered an alg for Raperm this way: OLL 35, and OLL 37 in that order
you can mess around with olls and discover plls
I think it is the oops method that refers to OLL OLL and PLL skip, I don't know if I am right.
actually, y perm is a conjugate of a blindfolded alg and f
“And a more appropriate word would be something like “sequence”, but in cubing we like to use big words to impress people because for some reason solving a cube is not impressive enough.” -A wise old man named Jay Permutation, 2021
*The truth hurts.*
Whenever I try teaching people to solve the cube I intentionally avoid the word "algorithm", opting instead for "sequence". It sounds less intimidating for people and so I find people are more willing to learn if you start by calling algs sequences instead.
wise word charish hen, but his name is jonathan permutation
0:45 totally accurate
I've thought about this subject for a long time, and here is how think the history of cfop algorithms progressed:
cross (intuitive)
f2l (intuitive)
on a solved cube, break one or more f2l pairs and repair them. see how this affects the top layer pieces. record down the algorithm and what it does. this gives you a lot of oll cases to play with.
next, someone noticed that oll 37 + oll 33 on a solved cube leads to what we now know as y perm. im gonna guess this is the first pll discovered that involves both edge and corner pieces (because all edge only or corner only algs can be solved with somewhat intuitive commutators).
from y perm, you can set up a bunch of other plls to it. some examples are j perm and t perm. with this new setup to _perm trick, you can explore many setups and get plls such as f perm and both n perms.
i think once these 'basic' plls (edge only perms, corner only perms, y j t f n perms) have been discovered, people have already started using computers to solve any of the olls and plls that have not had their algs discovered yet. this irons out all leftover oll and pll cases, and today we have access to multiple algs of the same cases
Interesting that I intuitively used break and repair + trial and error on both the Miniminx and the 4x4 before learning the actual algs. Unefficient, but very satisfying.
Any one like me after 3 or 5 or 12 months maybe at that time i stop watching this channel.
0:39 Exactly😂😂
I never learned how it worked but I'm proud that I was able to figure out on my own that my 2-look alg was a Y-perm and then managed to figure out how to use it for 1-Look PLL.
The thing with break and repair is that different algorithms effect the parts you normally dont care about in different ways and this is even the case when using an alg, and then the mirrored inverse of itself, so while its more or less impossible to predict what is going to happen, you will definitely change something without destroying what you archived yet and that is always a good thing.
For me break and repair is the most intuitive of the shown methods even if commutators are more powerful.
rlly improved my cube knowledge thank you so much dylan
Awesome videos, I’m a complete beginner and I’d love to see a tutorial of how to take apart the bigger cubes and also the minx’s too. I’ve found some other ones online but they’re not very good
These videos always make me feel special in an interesting sort of way.
This video needed to be done! Thanks Dylan!
Just wanted to say congrats on 600k! One step closer to 1 mil!
It’s 12:14 in my country and it’s my birthday today and you made me even happy by uploading on my bday also I am supposed to sleep now but I am watching your vid
Happy birthday
Happy birthday 🎂
Thx to all
Yes, "break and repair" method is easy to understand the concept but hard to understand each move. I classify it inside the method "shuffle", which is more general. My OLL method is created by that "shuffle" method.
this was such a great video! I have been cubing over a year and i have always watched many cubing related videos. This is one of my favourites!!
Thanks Jperm!
My guess here is that, the y-perm alg was found and why it works with oll 33 + oll 37 because the main foundation of them are commutators and several experimentations on the common trigger moves (sexy move, reverse sexy move, sledgehammer, and hedgeslammer) that are joined together. oll 25 is just a wide oll 33 and oll 24 is just a wide oll 37. And since, in those wide olls, the edges also commutate with the corners. This creates a sequence of commutating pieces that can result to what we call now the Y perm.
I've just learnt the J perm and it's already my favourite alg. :)
Try G perm now 😂 and see what happens
@@vedatpisirici2635 then try learning full oll (56 algs)
@@mounisani1502 57*
@@binaprajapati7709 yes thanks for the correction
In 50 years maybe :)
J perm is litterally the Tom scott of cubing and its amazing
Congrats on 600K!!!!
Ayy 600k!! Congrats 🎊🎊🎊👏🎊
Nobody:
Non cubers:
can you just do the same move over and over and it will solve it self
Sure.
So long as it was solved when you started.
Of course... it just take's 43.2 Quintillion (43,252,000,000,000,000,000) tries... ;)
@@kenp.7304 Actually, the most any loop on a cube can cycle is only about 1000 times. Meaning that if you just repeated some sequence of moves it would need to be a VERY long cycle, otherwise you just will never get there.
That's called the Devil's Algorithm and has been found, as far as I know.
@@MasterQuestMaster Indeed it has, I think the text file that contains it is like a couple gigs or something
0:32 wise words, wise words. lol
Jperm keeps uploading videos like these and I'm super grateful for them because they are helpful and useful. Keep doing what your doing Jperm 👏🙏
I love it when you learn and perfect a algorithm to the point that you can use that algorithm for different pieces in different layers
I think it’s funny that you display the break and repair algorithms as Alg1 + alg2 = alg3. Because you are soooooo close to the mathematical theory behind the rubicks cube. The cube is a type of Group. Groups are the mathematical objects used to study symmetry, and believe it or not, numbers are a group. So the reason why doing two algorithm one after the other yields the end state of a different algorithm is a result of the symmetrical structure of the rubik’s cube group. Worth researching a little bit.
There is one method of solving the rubicks cube, where you can “intuitively” set the rubicks cube into a specific, but simple pattern, and afterwards you can use symmetry and group theory to quickly solve the cube.
Great video! Time to play around with commutators.
His Y perm is so clean man, I'm actually jealous cause I love this alg but always mess up the execution
I love it too, but I mess up one I do F' ;-;
video description sums up the video pretty well. thx jperm :)
This video actually helped me alot
What everyone understand:ah yes yes
What I understand with two brain cells: rurururururur
Time to show this to friends without any context
@@PanjaRoseGold lol
I just wondered about this about half year😂😂😂
I just wondered about this for half a decade
this is the type of video i can watch over and over again and it does not stops getting bored
Love your self-deprecating comment about sequences and algorithms!
I opened youtube thinking "I want to see J Perm while I practice my oll" and then this popped out. Now I think google is spying on me
It is. And you should put pants on.
Nice
The only person who is actually first 😂
@@DanTrueman08 lol
@@DanTrueman08 ikr lmao
Nice
i'm working my way to fully understand commutators, thanks j perm
These Videos actually help me thanks
Speaking about algorithms, I found an R, U, D T-perm while messing around that felt really satisfying to do. It goes R2 U R2 U' R2 U' D R2 U' R2 U R2 D'. It has most likely been found before and might have even already been suggested. I know it isn't faster than the standard algorithm but it was fun to mess around with.
A Y perm is actually possible to construct intuitively, funnily enough. It's just a conjugated cyclic shifted J perm, and J perm is a block comm with an extra move to make it a 2e2c. There are definitely some completely unintuitive algs, but y perm isn't exactly one of them
Sorry I know this is an old comment, but would you mind explaining a bit more? What's does 'conjugated cyclic J perm mean? What's a block comm? 2e2c means 2 edges 2 corners? I would love to know what you mean
@@voidboi95 So a commutator (like J perm shows in the video) normally affects 3 pieces. However, you can affect more pieces if you use wide moves. For example, the commutator F' l F R' F' l' F R (written as [F' l F, R'] in comm notation, if you're familiar with that) cycles round 3 blocks of pieces. This is called a block comm. Doing R U' R' after that block comm will place all 3 blocks that were affected onto the U layer. That means that we can do R U R' [the block comm] R U' R' to turn it into a last layer algorithm, which is a conjugate, as J perm describes in the video. Writing that alg out in full gives R U R' F' l F R' F' l' F R2 U' R', which is just another way of writing the standard J perm. So the standard J perm is a conjugated block comm. Writing it that way means it's a 3E3C alg (3edges 3 corners), because those are the affected pieces. If we add a U' at the end however, it becomes a 2E2C alg, because 2 of the blocks we cycled get returned to their original places, and one block that wasn't affected now is. So the 2E2C version of J perm (that we'll use going forward) is R U R' F' R U R' U' R' F R2 U' R' U' (the last move is important here). Now, this affects 2 edges and 2 corners, and we can manipulate it to affect other combinations of 2 edges and 2 corners. For example, if we do R' U' [J perm] U R, we get a ZBLL (a lot of people use this as a COLL alg too). This was a way of conjugating the J perm, but if you write it out fully it looks like: R' U' R U R' F' R U R' U' R' F R2 U' R' U' U R. You might notice that the last 4 moves cancel themselves out, so in reality the full alg is R' U' R U R' F' R U R' U' R' F R2 U'. This is a conjugate of J perm, but because the setup we did cancelled fully with the end of the alg, it's the same length as the original alg. Essentially what we've done is just taken the last 2 moves from the end of the alg and shifted them to the start. This is a technique known as cyclic shifting. If we take J perm and instead shift 4 moves from the start to the end (the R U R' F') then we actually end up with T perm. It's just a cyclic shifted J perm, so it too can be seen as a setup into a block comm. Going a bit further with this, if we take T perm (R U R' U' R' F R2 U' R' U' R U R' F') and shift another 4 moves from the start (the R U R' U') then the alg we end up with is actually the swapping alg we use in old pochmann corners (this is for blindfolded solving, so don't worry about it if you don't know blind. The important thing is it's an alg that swaps UB with UL, and UBL with RDF). Now, we can keep cyclic shifting this alg but eventually we'll just end up back at J perm (hence the "cyclic" bit of "cyclic shift"). So we're going to stop here, with the alg R' F R2 U' R' U' R U R' F' R U R' U'. However, since 3/4 of the pieces affected by this alg are in the U layer, and the third is in RDF (which is easy to set up to the U layer) we can conjugate THIS alg, and get another LL algorithm. Doing F [this alg] F' means it's going to swap UBL with UFR instead (and still swap UB with UL), which means we've just created Y perm.
@@cookierobber thanks for taking the time to write this! Unfortunately I’m kind of stuck at the start. I recognise that alg, you can use it in F2L to inset an oriented edge in the top layer into its slot. And I can see that it cycles 3 2x1 blocks, so calling it a block comm makes sense. But how is this even a comm at all? Maybe I just don’t understand commutators deeply yet, because I can’t wrap my head around how this works since all the blocks aren’t in the same layer. The idea of block comms is cool though, I just invented this shitty Nb perm with it: [RFR’URF’R’U’RFR’, U2]
@@voidboi95 Well, a commutator doesn't require all the pieces to be in the same layer, just 2 of them. Here 2 of the blocks are in the R layer, so it's fine. But anyway, a normal commutator has a 3 move insertion and a 1 move interchange. The insertion needs to affect only 1 piece on the interchange layer. So F' L F R' F' L' F R would be an example of a commutator that cycles 3 corners. F' L F is the insertion, moving BUL into RUF, and R' is the interchange, moving RUB into RUF. So the commutator as a whole cycles BUL>RUF>RUB. Now, the block commutator I gave is a modified version of this. Instead of F' L F, the insertion is F' l F. This still moves BUL into RUF, but it also moves BU into RF. Normally an insertion needs to affect just one piece on the interchange layer (the R layer in this case). Here it affects 2 adjacent pieces (RUF and RF), but we can kind of think of them as one piece, since they don't get broken up at any point in the alg. So rather than cycling 3 individual pieces, the block comm cycles 3 corner-edge blocks (BU/BUL>RF/RUF>RU/RUB). If you imagine a cube where these blocks are attached together and actually *are* 1 piece it might make it easier to understand - on such a cube, the block comm would just be cycling 3 pieces, like the normal comm I showed above.
@@cookierobber Ok yeah this makes sense now cheers. I was getting confused cause I'm not used to seeing the interchange layer as R, and wide moves muck up my visualisation.
These videos help us alot , on the technical side too , keep it up bro
Execellent explanation! Thanks.
The Y Perm is not actually that difficult to understand. Like you said, it's 2 OLLs.
The first (OLL) part, F R U' R' U' R U R' F' is basically a conjugate. After the first four moves (F R U' R') the top layer still has the same pieces on the layer, so if you were to change something only on that layer (like doing a U'), then reverse those first 4 moves, you wont have affected the bottom two layers, only the top layer.
The second (OLL) part, R U R' U' R' F R F' is actually a commutator... not a corner commutator, but a block commutator, as in it cycles not just a corner or an edge, but a pair of them. If we rewrite the algorithm a bit, then it might be a bit easier to understand: (R U R' U') l' (U R U' R') l. The last two moves cancel out, but it's actually a commutator: A B A' B'. It's a 3 cycle of blocks, instead of corners or edges.
And it just so happens that putting those together produces a diagonal corner swap, in this case a Y Perm. And you can actually change the algorithm so it doesn't move any corners, simply changing the second U' in the algorithm to a U. This doesn't really accomplish anything useful, but if you look, you can see that no corners have changed position and have just changed rotation (even after doing a 3 cycle, which doesn't preserve corner position)
Hope this isn't too confusing haha :)
Did you say y perm
i thought i was the only one who knew about block commutators lmao
i didnt get how you can rewrite R U R’ U’ R’ F R F’ (the second OLL) in the other alg that you wrote.. can you explain it again?
edit: now i got it.. oh boy thats brilliant
@@gianlucasimionato3987 Can you explain i don't understand it
@@Humulator
well first of all lets be sure that you didnt fall in the same stupid mistake that i did.. l’ = small L’ = Lw’ i didnt realize it immediately..
the first 4 moves are the same (R U R’ U’) than l’ means that your are turning the L slice and the M slice up that in the end is the same of doing R’ (that is the next move in the original alg) and a X move (so the center pf the cube in front of you goes in the top face).. at this point the next moves are F R F’.. but since we did a X move all the F moves becomes U moves and F’ becomes U’ while the R remains R. at this point the sequence is done but to complete the commutator we need to undo the l’ move with a l move. The clever idea is that we also add a R move and you should realize that l’ + R is not changing anything in the cube ;)
You gained 100k subscriber in 3 month. You are a legend!😁
i think you're a bit overreacting lmao
Dude I’m so happy someone like you is a person in the cubing world. If I had this 6 years ago I would’ve been so much better.
I was wait for this since 3 days but i was waiting for q and a but ok i was checking community page to see that q and a time question down your commets and right now i am in india 12 : 18 am mid night
I hope your doing well with all that's happening India due to Covid
Thanks for your commet and yaa everthing is going well because vaccination started and were u live how's covid there
Because because of lockdown i am 24 hour online right time is 01 : 01 am
@@pushpaghoge5798 I live in Canada Covid isn't bad here still closed down in Ontario but we're pretty chill
Ok bye let me sleep for an hour i will met u after my sleep is over just a hour sleeep a day
“So what we’ve done is destroyed f2l” -J Perm.
A j perm destroys f2l
Great video!
Thank you this helps me a lot A LOT!😃
Wait how is there 462 views when the video cameout 2 minutes ago and its 8:26 minutes long???????
0:50 why colors of cube strange here(Red must be on the right side of blue
thank you for learning me to cube, I appreciate it.
Good video, keep it up!
5:36 flat earth is hiding
'There are little elves in the cube that rearrange the stickers when you do algorithms.'
-J perm
Description 😂
5:09 the text on the screen sums up all trial and error algorithms that has ever been computed perfectly
Finally this video
I have been wating for it Thx J perm
Hi
Then who the hell found the algorithms 😂😂😂
uhhm Erno Rubik?
@@RoschReyna-oj1iverno Rubik did not find these algorithms lol, Jesica Fredrick did (with the help of other people)
@@zeroing000he tried..
@@zeroing000Lol! u forgot to close ur bracket ( )
Amazing! I really craved to understand every alg even if i don't become a sub-10 cuber. This really helped! Thanks!
Made my day now I just learnt both n perms in one video with zero struggle
Who cares
*Intensly doing 20 algoritms with 20 tps*
Amazing bro
Fantastic 👍👍
Commutators and conjugates can be explained by group theory. I guess all algorithms can be made using those, but the destroy and repair method might be easier for us to memorize and fingertrick so we use them.
please make more vids like this i can watch them over and over without getting bored
Congrats on 601k subs love the videos
I love these informational videos
I’ve just been binge-watching JPerm for 2 hrs now. And I have been just practicing F2L without regripping to the white face, and trying to keep my thumbs on the front layer unless it is a move. It is going well. The pinch turns still feel a bit strange.
It is also midnight :)
This video helped me to learn algorithms easier
Congrats for reaching the 600k!!🥳
JPerm you hit 600k congrats!!!
Happy 600k subs Jperm!
Congrats on 600k!!!
Thanks j perm I improve my cube solving speed just because of you
CONGRATS ON 600K!!! 400K MORE TO GO!!
Congratulations for 600K!!!
I love the description
6:53
Me: Love that expression
Ha Ha Ha 🤣
J PERM CONGRATS ON 600K! Big milestones!!
4:13 because OLL doesn't just orient pieces, it also moves them around. if you draw the arrow diagram for the two OLLs you show there, cancel out oposing arrows and connect the others, you can see that the final arrow diagram is the Y perm. as to why it ends up all correctly oriented, well, both OLLs orient two corners and two edges, and doing a colored arrow diagram (the colors keep track of the orientation of the pieces as they move) then you can also add both diagrams together and you'll end up with the Y perm
Loved the video
You make the best vids man
Congrats on the 600k subs!! getting closer to a million 🥳
Lotsa theory videos lately. I like it!:)
I jappreciate the explanation. I'm over 30 and have no time to devote to cubing and don't own a cube, but I have always been curious and admire cubers' expertise and smarts, it builds skills for life. Now I have to mow the lawn....
Congratulations for 600K!
Congrats on 600k!
Thank You for making this vid NOW IF MY RELATIVES ASK HOW THIS ALG WORK and stuff like that I can sent this video to them
Congratulations for 600k 🎉🎉🎉🎉🎉🎊🎊
idk if you'll read this but you should totally explain why beginner methods like ur 2x2 one work
and how they relate to commutators and cfop and the whole shebang thank you H perm