Baduk TV English: Kim Seongryong’s 007 Lessons: Lesson 25

Kim Seongryong’s 007 Lessons is a Baduk TV series that teaches you how to deal with unusual moves, overplays and trick moves. The presenter, Kim Seongryong, is a 9 dan professional Go player. This is lesson 25.

Lesson 25

Video: Kim Seongryong's 007 Lessons: Lesson 25

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Transcript of the video

Translated by Oh Chimin 7d for

Edited by David Ormerod 5d

Hello, it's the time for 'Punishing Trick Plays' by Kim Seongryong.

It's said that there are approximately 30,000 josekis in Go.

This should give you an idea of how diverse the topic of joseki is.

No one can memorize all the josekis.

In contrast, there are about 30 josekis which are played very often in actual games.

However, in terms of trick plays, there are considerably more than that.

Because of that, you need to learn about and be prepared for many possible trick plays.

Let's look at today's theme.

Black's two space jump is normal.

What if white attaches and cuts like this? This is today's trick play.

If you respond properly, it shouldn't be a problem.

But if you're seeing this for the first time, you might make a mistake.

Here's another one. After the attachment, white blocks here.

This was frequently played in Japan in the 80s.

When there are no other stones nearby, black needs to answer carefully.

We'll also examine this move today.

White plays a two space pincer.

This pincer is one of the most common responses to black's approach.

There are many different possible pincers.

In recent games, these two pincers have been played quite often.

For black, the kosumi is the easiest answer.

After white's knight's move, black slides into the corner.

After white's extends here, we have a basic joseki.

This is the representative joseki for the two space high pincer.

And many players love this joseki.

However, there's another one which is just as popular.

It's the two space jump.

In general, when jumping towards the center, a one space jump is normal.

Whereas, when extending along the side, a two space extension is the most common move.

In this case, black usually jumps like this.

In response, white answers with a two space jump.

After black pincers, a battle will begin.

Or, white can attach here.

If black hanes like this, white will separate black. It doesn't make sense.

So this move is correct.

After that, black jumps here.

Then white cuts and captures black's stone.

Because there's a vital point here, black needs to play a knight's move.

That's the normal joseki.

Last time, I taught you about this counter-hane.

Because the two space jump looks thin, white may be tempted to cut black.

As a result, there are many trick plays related to this.

We looked at this hane earlier.

Today, we'll investigate this bump.

Of course, black has to block here.

White could play here, aiming at both cutting points.

It's not as complicated as it looks.

If black connects, white will cut of course.

How about this atari and the tiger's mouth?

Well, this black stone is very big.

This is what white wants.

So I'll show you a simple answer.

Atari here first, then white has to connect.

That exchange reduces the value of black's third line stone.

In addition, there are no ko threats, so white can't start the ko.

This result would be a great success for black.

If white connects here, black can protect his cutting point.

Black's position is very solid.

Let me explain why black ataried first.

It's profitable to make forcing moves before sacrificing a stone.

So remember to exchange the atari first.

White usually won't choose this variation. She has a trickier continuation.

When white cuts, responding effectively is crucial.

In this case, you might hesitate about rescuing this stone.

To do so, you need to extend here.

If white blocks like this, you can capture white's stone, since black has a liberty here.

It's very bad for white.

Therefore, white must connect her stone.

After that, black can atari and cut.

It's a one way street.

Black can capture this stone.

However, blocking here is very powerful.

In addition, these three stones have become useless.

To save them, black would want to jump out like this. However, white has a strong aim in the corner.

This cut is a tesuji.

If black ataris, white can move her stone out.

Previously, it was captured in a ladder, but it's different now.

Thanks to the tesuji, white can atari as she comes out.

As a result, white captures black.

Because of this aji, rescuing black's stones isn't very powerful.

Inevitably, black has to fall back when white cuts.

After that, white's position becomes more solid.

On the other hand, black needs to look after his corner in gote.

And then this group is just floating in the center.

This variation isn't good for black.

Black has another choice.

It turned out that playing the atari and cut wasn't good.

Therefore, this attachment is conceivable.

Then white connects.

Even though black's attacking, white can come out like this.

Black has to block here, then white cuts.

After that exchange, white can escape with the atari. The corner isn't alive yet.

This isn't good for black either.

Therefore, black can't extend to rescue his stone.

So you should consider this atari instead.

But if black connects here, white will capture black's stone, and black's shape doesn't look very good.

He needs to defend again here, then white will jump.

This exchange is profitable for white.

And the corner is very big.

Furthermore, this black group may come under attack if white jumps like this later.

This isn't good for black either. So where should you play in this sort of situation?

Never connect with an empty triangle. I taught you this sort of move in an earlier episode.

This move is a lot better.

Now white has to capture black's stone anyway.

After that, connect here.

After white's jump, you can take control of white's stone better.

There's another option too.

You can also sacrifice one more stone.

White's forced to come out.

She has to push once more.

However, she can't push too many times, since each exchange is harmful to white.

So white should capture these two stones now.

Then black exchanges this move.

After that, black can develop a thick moyo with this connection.

In conclusion, if you try to save this stone, you won't get a good result.

Instead, you need to sacrifice it like this.

Or, you can sacrifice one more stone.

These two moves are the best choices in this situation.

Here's another situation that can arise from the two space pincer.

In addition, this is a diagonal formation.

So you should keep that in mind.

In this case, white might attach here.

I'll show you what white's intention is.

She won't bump and cut this time.

Instead, she'll block here, which is a bit complicated.

The ladder is relevant in this case.

How about this atari and connection?

It's no good. After white cuts, there's no good answer.

This stone is a ladder breaker.

Otherwise, white can't play like this.

To escape, black has to atari anyway. But the ladder is unfavorable.

So black has to connect, then white hanes and captures these two stones.

These two stones are bigger than this stone.

So black can't choose this variation.

Similarly, this tiger's mouth isn't good either.

When white cuts, the result will be almost the same.

Black still needs to connect here.

If white hanes, there's no way to rescue these stones.

It turns out that black shouldn't save his stone.

It's too submissive for black to play a knight's move like this.

When white connects, it makes miai of attacking either group next.

Black will face a crisis.

So black has to defend his cutting point.

However, this move looks too ugly and humiliating.

It's a terrible shape.

If you play like this, you won't improve your Go skills.

How about this tiger's mouth instead?

Well, it isn't a good idea either.

When white captures this stone, black can't atari here.

Even though white can't start a ko at the moment, it will create a burden for black later on.

If white wins the ko, she won't just connect here.

Instead, she'll make a ponnuki, like this.

In other words, it's a disaster.

Therefore, the tiger's mouth isn't a good idea.

Black has to connect here, then white will jump.

After that, black's shape looks heavy.

On the other hand, white's territory is large.

It's another failure for black.

Then how should black play?

One might think of this jump.

Black intends to fight if white cuts.

In this case, black doesn't need to spend another move here.

So playing like this is more efficient.

If white extends, black can answer and fight.

That's because white isn't strong enough to attack black properly.

This may be a good choice, but white has another move.

She also won't cut here.

If white cuts and captures this stone, it'll be fine for black.

But white won't play like this either.

White has a nice tesuji now.

This clamp is a wonderful move!

If black connects, white will cut and capture black.

If black connects here, white will capture this stone.

Then white's territory is very big.

Because of the clamp, black's jump isn't possible.

Let me show you how to answer.

There are two choices.

The first one is to jump here.

Remember this move. It's different to the tiger's mouth.

If white still clamps, white can't separate black anymore.

Thanks to black's previous defense, black can capture white's stone now.

What if white cuts this way?

Look at black's position.

It's totally different in terms of eye shape and thickness.

Compared to the previous shape, it's more flexible and stable.

The difference of one line is huge.

It's clear that this result is better for black.

Black already has one eye, so this group isn't weak at all.

So this jump is one possible answer.

In response to the jump, white should atari this way.

Blocking here is an overplay.

If black connects white pushes, to force black to make an empty triangle.

After that, white jumps, and black blocks here.

Since this white stone is isolated, the result is good for black.

Don't forget this jump.

There's another good response.

This bump is also nice.

One advantage of this move is that white can't cut here. It's a net.

In addition, white can't capture this stone either.

Black can atari and it's very small now.

If white extends, black plays a tiger's mouth [Ed: to prevent white from connecting with a tesuji at the same point].

As a result, black successfully splits white.

If white extends this way, black can defend his shape with this jump.

If white plays here, both directions become more urgent.

White needs to look after the corner, then black will approach and attack white's right side group.

If white extends here, black will enclose white and attack the corner.

Since white can't take care of both groups, it's better for black.

Therefore, this bump is a nice move in this case.

After this extension, jump here. If white plays here, then play the tiger's mouth.

If you want to play lightly, this jump is the move.

It's another good move to harass your opponent.

These two moves are the appropriate answers in this situation.

Now it's time to review an actual game!

This is from an online game played between two 8 dans.

The maximum rank on the Baduk N TV server is 9d, so these two are very strong players.

In this game, there were amusing variations in the fuseki.

Let's look at them.

Black cut here, but it was an overplay.

He shouldn't play there when the ladder's unfavorable.

Therefore, white should have been successful.

But at this stage, white ataried here, instead of sacrificing the three stones.

It was a big problem.

They were exchanging mistakes.

Eventually, black succeeded. Let's examine the sequence.

Black chose to attach here.

It's one of the most common josekis of the 3-4 point.

In general, amateurs prefer this move because it enables black to expand the bottom easily.

White has several possible responses at this point.

The players are both 8 dan.

They're the second highest rank on Baduk N TV.

Therefore, they're advanced players.

I imagine they know and understand many josekis.

How should white answer in this situation?

We used a database analysis tool.

And we looked at 20,000 games played by Baduk N TV 7-8 dans.

Where would you play if you were white?

The majority of players chose A.

29.6% of players played at B.

5.9% of players extended at C.

Finally, D is a very complicated move and Lee Sedol 9p plays like this very often.

It intends to take the corner.

2% of 7-8 dan players played at D.

As expected, this tiger's mouth is the most common response.

After that, black secures the corner with the attachment.

This joseki focuses on the territory in the corner.

It's a common joseki, so you need to learn about it.

In the actual game, white connected here instead.

He intended to get a more solid position.

In response, most players kosumi.

Then white jumps, and black extends.

White develops influence while black takes territory.

This joseki is seen quite frequently.

But black haned here.

In fact, this hane isn't often played.

That's because white can attach here, to gain some points in the corner afterwards.

After that, white can approach here and it's slightly better for her.

Because the corner has been settled simply.

But white didn't play like this.

Without exchanging the atari first, she just extended here.

And then she haned.

Black should've connected and reduced white's moyo like this.

Not exchanging the atari was a mistake.

This move was an overplay.

This extension was a good response.

Black had no time to extend, because of his cutting point.

Black can't cut when the ladder is unfavorable.

Because of that, he was in trouble.

If black connects, white will atari and capture this stone in a ladder.

When black cut here, white responded incorrectly.

When black moved out, white should've ataried again and sacrificed her stones.

They're just three stones.

After that, she could have captured these two stones. White's position is extremely solid now.

Of course, it's better for white.

But she couldn't give up them.

She thought they were big.

White ataried here, but black missed a good opportunity.

If he'd haned here, the game would have been over.

Due to the cutting point, white can't cut!

But black missed a golden opportunity!

Thanks to this hane, white was able to manage her group.

The corner was settled, so it became a long game.

Even though this result was better for black, he could've finished the game here.

Before that, white didn't punish black's overplay.

Let's look over their mistakes again.

White should've thought about the sacrificing her stones here.

You need to consider sacrifice in many situations.

If you're able to do so, you'll become a strong player.

An 8 dan like this could have conceived of the sacrifice strategy.

It's a pity that she couldn't come up with this move in the game.

It would have been a fantastic variation for white.

After that, black also missed a good chance to finish the game.

Both players made mistakes at crucial moments.

However, mistakes are part of the game and they make Go more interesting.

Sometimes it's hard to distinguish between sacrificing and wasting stones.

It's similar to the distinction between thickness and over-concentration.

In fact, players with a firm understanding of all these contrasting tensions are close to professional level.

Nevertheless, if you understand what to save and what to sacrifice in some cases, you'll become stronger!

Trick plays test whether or not you can make such distinctions.

To do this well, you need to enhance your judgment through practice.

Thank you!

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