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Hi! 😊

Its bern 3yrs and your still helpinh lives

Pls gift me a cube

Nice

Pin this comment please Daniel

Not only does something like R L mean there are only 12 possibilities for the next move, its also the same as L R which technically is a completely new combination

I only need 2 steps: First take the cube apart and second rebuild it.

MVP: Most Victorious Player

you missed the most important part. how the algorithm worked that found the shortest solutions. there is a video about the involved graph theory stuff on youtube. without that part this video is virtually useless

😂 Who would have thought that after so much work… That God’s number is actually just the number of turnable pieces on the cube 😮? Of course, I am assuming that this is absolutely just a coincidence, however, it would be very interesting to see what God’s number is on different cube sizes such as super cubes. I wonder 🤔 if any pattern can be found, considering odd and even numbered cubes, being that all odd numbered cubes have fixed centers in the middle while even ones do not. Such as the 2x2 ice cube, and the Rubik’s Revenge 4x4, and so on. I found that very ironic that the 8 corners and 12 edges add up to exactly 20 turnable pieces 🤔🤷🏻‍♂️

that's easy, to solve the cube, you need the same amount of moves you spent to scramble the cube. just unscramble it the exact order in reverse and you're done! (I still didn't watch the video)

why "god's number" is the # of moves needed for a 3×3 cube, and not, for instance, for a 2×2 ?

Why don’t they call it Rubik’s number? After all God didn’t invented the Cube.

There's an easier way to prove god's number is greater than 2. Give me a scramble, and if you can't solve it in 2 moves, then god's number must be greater than 2.

Great video man

I gave a like for popularizing the topic (albeit with the left hand, which in the terminology of the fingers-tricks 3x3 Rubik's cube is denoted as t). I expect the topic to develop over time (t), because the story about the G-d number depends on what is considered the first move of the solution. There are several metrics that determine this. You only told about the G-d's number in one metric of half a turn (HTM). The story about another G-d's number in the metric of quarter a turn (QTM) is no less fascinating, because it was found only 4 years later, in 2014. But there are still unsolved problems. For example, the optimal solution, what is it? It is clearly not in the two above-mentioned metrics of movement. And how to calculate the G-d's number for it? I have never understood why the rules/standards for counting turns follow the "range of motion metric" and not the "efficiency metric". (c) Anthony Snyder.

Very confusing

Yeah..❗ I watched your Mini Documentary video... It's really Well-made.. 😊 I also make videos.. I waanna know how you do those..(means, Your whole process of making videos) Anyways, my pb was 7.67 seconds on 3x3.

Nicely done! Regarding the last part """scrambling the cube for 10 min better than just 1min is not true because you're just cycling through previous positions""". I disagree! Think of a 1D random walk, sure enough in N steps you can reach a maximum distance of N, but if you pick a left or right step randomly, the distance will only grow as sqrt(N). The analogy here would be a random walk along a circle, and indeed once sqrt(N) becomes of the order of the perimeter P of the circle, then you don't gain additional mean distance w.r.t your starting position, but this only happens for a number of steps proportional to N~P^2. I would expect something similar for the rubik's cube, though the symmetries of the move may alter that quadratic power. It should be easy to run a Monte-Carlo simulation applying random moves to a solved starting setup and plotting the average length of the optimal solution from the resulting cube to see how many random moves are necessary to get close to the average solution length that can be determined from the table you showed (where the distribution is very skewed, so the average should like around 18 I guess). I wouldn't be surprised then to see that it takes quite a bit more than 20 moves to get there, so the 10 min scramble may not be completely overkill afterall :).

English is not my third leg but this video was a great

I never imagined it took until 2010 to get to this result.

The video is rly cool, but i probably have to rewatch it to understand it

Could another solution be what is the minimum moves required to make a rubix cube seem scrambled to most people? Like they can’t just see which moves you did and reverse them? Edit: because the true solution would be just undoing the moves, so if most people considered a cube to be scrambled after a sequence of say 8 moves, couldn’t the 8 moves to undo that be the answer?

0:02 don't you mean maximum? it's at most 20 moves, not at least.

Magnificent - Looking forward to future videos!

Thank you for this summary very well explained!

Just subscribed *Revelation 3:20* Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me. HEY THERE 🤗 JESUS IS CALLING YOU TODAY. Turn away from your sins, confess, forsake them and live the victorious life. God bless. Revelation 22:12-14 And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be. I am Alpha and Omega, the beginning and the end, the first and the last. Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city.

How was set theory used in the solution?

When I did my first research project for my bachelor they hammered in the importance of building on previous results. Its good to try your own approach, but research is a collaborative tasks where you need to communicate and build on each others results. This video illustrates this really well.

You are really awesome ❤❤❤ and my pb is 18.999 and from my side video's best part is 0:12

I can solve the 3x3x3 easy. The 5x5x5 still sits on my shelf only almost solved.

this is an amazing video, good work!

As a total non-cuber that was a REALLY good explanation, made it make sense for me

Hernandez Michael Anderson Patricia Thompson Thomas

What is ocll

A grand viewing, sir! Thank you!

ITS THE BIG FISH LITTLE FISH ALGS

The reason its called God's number is because that's the number of moves an omniscient diety would make to solve the cube, not because you'd need to be omniscient to find that solution- i think you were making a joke but the real explanation is worth having :)

You keep mispronouncing the name "Reid." It should sound like "reed" as in "READing a book."

Some months ago, I did a presentation on the rubik's cube to my company. Part of it was explaining the process of finding god's number. Really cool to see other people with the same interest! Very nice documentary 😊

gan 12 megnatic meglev

great video, subbed!

Congratulations bro 🎉🎉 for 1k subscribers. My pb. is 13.43

I gave a Like in the beginning of the video! And it a good one!

My pb is 6.10

This also means that any valid starting position can be changed to any valid destination position in 20 or fewer moves. Good luck figuring out those 20 moves. 😎 Great video.