Lee Sedol VS AlphaGo - The Divine Move 

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That’s a redo

The video would be a work of art if it did not have this EPIC FAIL ! Can't you fix it ? It is simply deeply shameful !!!

It is not just a typo ! A typo is when I write e.g. "Wromg" instead of "Wrong". But this here is a distortion of the facts ! It will simply a LIE !!!

Please fix this in a new video. Great work otherwise

Absolutely! Pay attention to the shapes they use as well - how they aren't afraid to play solid sometimes and then extend and sacrifice other times. Its beautiful to watch!

@@InSente Absolutely! It's fascinating to see what plays and shapes are connected, but as a beginner I wouldn't have thought of. It definitely helps me realize how "tight" I apply when it's absolutely not necessary. Lee Sedol's shapes are so absolutely beautiful as well. After having read some of Janice Kim's books many many years ago (I've taken a long break from go sadly), seeing many of these shapes that Lee Sedol plays make me go "OHHHHH!!! That's some of the kind of stuff that Janice Kim was talking about!"

Keep an eye on color go server

The technology of driverless cars is susceptible to the same kind of uncontrollable STUPIDITY as demonstrated by the god move 78. IT IS A FACT. It puts people in prison and makes other people die while the corporations keep the profit.

@@InSente What tool was used to create this effect?

Thanks man

may I ask why is this a divine move?

May I also ask why this is a divine move

@@broragnarok146few can see this move. Low probability (extreme) but can change outcome decisively.

The technology of driverless cars is susceptible to the same kind of uncontrollable STUPIDITY as demonstrated by the god move 78. IT IS A FACT. It puts people in prison and makes other people die while the corporations keep the profit.

Basically it opens up the game for white to attack the centre. Without this move at this time an Invasion becomes to difficult and black should win.

only because AlphaGO blundered right after..

Youre correct! That was typo - I had put it in the description and in a pinned comment for viewers :)

It's the central point for attack and defence. It lightly parries White's attack at 26, it offers assistance to the four Black stones below, it expands Black's moyo at the top, it erases the influence of White's thickness to the right and finally it also aims at reducing White's territory on the left side. In short, the influence of black 27 is radiated all over the board. It is the kind of move a player only makes once in a lifetime. Quoted from the book Invincible. The Games of Shusaku.

@@sandybarnes887 Yeah, I read similar explanations before, but... I don't really get them, you know?

@@falnica which part don't you get?

@@sandybarnes887 im a beginner as well and from what i understood is that move basically waged war on all sides of the board. black opened up a way to back up all the lonely stones in the right side and paves the path for influence in the center?

@@megugu2155 yes. waged war and gave support, a supply line. The info I gave above is a quote from a book I have about Shusaku

Me too😭

Because when white plays the stone it destroys all of blacks structure in the center of the board allowing white to recover from a huge deficiency in his own territory. If he had played anything other than that move black would of most likely won by a large margin rather than scrambling to recover before resigning.

It is not really a divine move. AlphaGo just didn't react properly in sequence, that's why it became a divine move. deepmind-media.storage.googleapis.com/alphago/pdf-files/english/ls-vs-ag4/LS%20vs%20AG%20-%20G4%20-%20English.pdf Page 20 and 21, diagrams 8 and 9.

@@heikogabriel4721 thank you a lot

@@vaninh7486 No problem, I know how it is when you want to understand something. By the way, you can find the other games if you replace the two fours with the numbers one to five in the link. Have fun ! :)

It's really bad. My counting is very basic but it looks to me like white is ahead by a dozen+ points. And, with the kinds of moves alphago was making, White's lead was just growing and growing. There wasn't enough points on the board left for black to catch up, even if they stopped playing stupid moves. That final move by black is like something I would have tried my 2nd day of playing 😂 It was not only justified, it was IMPERATIVE that they stopped presenting Lee sedol and the world with such terribly embarrassing moves

It broke the ai after he made that move, it was such a creative move that the ai didn’t know what to do and started wigging out

Hikaru no go.

The move white made interrupted blacks territory in the center of the board allowing white to recover from a deficet in his own structure and black attempted to recover but was caught in a ladder that was discovered by the move white made. Had white not made that move at that juncture he would of lost.

Chess and GO ais can see many many moves in advance. Much more than a normal human. It's what allows them be so good. The ai sees the many possible moves that it can make and chooses the one with the best % of bringing victory. Due to the sheer amount of possible moves in Go due to the size of the board, this creates an exponentially high amount of possible timelines in which the game can go towards. The same is true for chess at a much lower scale which is what allowed chess ais to beat humans many years before Go. To speed up the game analysis of the AI, Monte Carlo-based program will look at all these potentials timelines and prune off those scenarios that are ridiculous or simply unlikely to happen. For example, nobody would ever play a stone in a corner as a first move in a game. The ai knows that these 4 moves exist but they are so silly and damaging to the score that these potential exponential timelines can be safely ignored. This allows more processing power invested in the winning scenarios and what will logically happen. And so, AlphaGo was directing the game towards many potential winning scenarios for itself like it had done in the past 3 games. Because again, it was calculating the most obvious way the game would go and choosing the best outcomes. It's like watching a car crash in slow motion. Lee Sedol was always going to crash. It was never a question of "if" but always a question of "when". At that, point Lee Sedol understood this and he did what humans always do in stories, movies and legends about challenging the impossible. He improvised. A bold move. An elegant move. Suprising and destructive. A move that no one playing the game normally would consider. In fact, the AlphaGo team analyzed the game data afterwards and it was revealed that AlphaGo foresaw that this was a possible move that could cause some problems but it did not investigate the timeline very far. It wasn't a move that was important enough to waste time on since no one would ever play it. The odds of that move being played by a human, AlphaGo calculated, was about 1 in 10 000. Lee was losing the middle and with that move, it stopped the creation of a strong black center. It reinvigorated Lee's presence and blacks area was divided into too many possible counters and openings. The ai simply did not know which path to take. Too many possiblities had opened themselves in a short window that it had not begun to look deeply into. The divine move happened on move 82. AlphaGo's reaction on 83 and 85 were perfectly normal responses. However from move 87 to 101 it became clear that something was wrong. AlphaGo played a sequence of bad moves and it's own internal estimation of winning took a nose dive. While it manage to pull off a good fight afterwards, the damage was done and it forfeited on move 180. tl;dr Lee improvised in the face of defeat. The AI was caught off guard by what it considered was a statistical anomaly, couldn't analyze the board correctly for a few moves and was basically playing blind. It tried to improvise while the database was reconstructing the possible paths to victory but couldnt make up for what happened after.

Thats good feedback! Next time I may add text in parts of the game to offer some info without disrupting the meditative vibe