Baduk TV English: Kim Seongryong’s 007 Lessons: Lesson 10

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 10.

Lesson 10

Video: Kim Seongryong's 007 Lessons: Lesson 10

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Transcript of the video

Translated by An Younggil 8p for

Edited by David Ormerod 5d

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

Why do you think people fall into traps?

I think there are two reasons. Firstly, greed.

Secondly, a shortsighted view of the whole board.

The phrase 'can't see the forest for the trees' comes to mind.

You may know that proverb, right? It means you focus on the small details and lose sight of the big picture.

If you're greedy about small things, you'll miss the big and important points.

Today's topics are related to this. Let's have a look at them.

As you can see, white needs to extend at the bottom now.

But, white invades the bottom left corner instead.

There are many possible responses for black.

Let's see what happens if black's too greedy and tries to capture white's stones.

And you'll also learn how to respond properly today.

Here's our second topic.

The position is similar to last lesson's, but white's shape is a bit different.

When there's a fourth line knight's move instead of two-space extension at the bottom, it's different.

Let's study this pattern as too.

White should extend here. This extension to the star point is better, because it makes white stronger.

But, white invades here instead.

Do you remember that if white extends at the bottom, black can jump here to reinforce the corner?

After jumping here, black can jump into the side later. I mentioned this in another lesson.

If white plays on the left side, then black can tenuki and play elsewhere.

Black defends the corner, and reduces white's future influence, with this nice jump.

White doesn't want that sort of peaceful game, so white invades here immediately.

You should be careful not to be trapped.

Because there's a certain pattern in which black often falls into a trap.

If you're confident in your strength, you'll be trapped more easily.

Because weaker players wouldn't consider playing that way.

Let's have a look how black could fall into the trap first.

If black simply plays like this, it's not bad.

After white connects under, black can pincer and attack white's single stone.

This is alright for black.

But, when you're stronger, you might consider this extension.

You don't want white to connect to the left side easily.

Sometimes this extension is good, and you should learn this move too.

But, if you don't pay attention to the details, you'll be trapped badly.

Let me show you how black falls perfectly into the trap.

Black wishes to separate white, so black blocks here.

Black has to connect here. Next, if white tries to live in the corner, let white live.

Black's outside is very powerful and solid, so it's good for black.

So, white should block here, and black would descend, to separate white.

Then white pushes through and cuts.

Black will atari here, otherwise white can extend here and capture black's stones.

It looks like black has more liberties, so black plays here to capture white.

White has four liberties, but black has more than that, so black would be excited.

This extension is sente, and then white seals black in, without making any other exchanges.

White can play like this because this atari is sente for white.

Black can try to break out into the center like this.

But, black's single stone is in atari now.

So, this isn't any good for black. If black saves the cutting stone, white can connect here.

The ladder doesn't work for black, and the big group's captured.

Therefore, black ought to fill white's liberties instead.

Then white fills a liberty from the outside, and black has to answer.

This cut is very nice now - you'll soon see why. It's a sacrifice technique.

There are no other options for black. White keeps playing atari.

There are two options for black here, but they're about the same.

This is slightly better, but the shape's already terrible.

You only need four stones to capture one, but black just spent seven stones to capture one.

'A ponnuki is worth 30 points', but in this case, it's only worth two points.

These white moves are all sente, and black eventually captures five stones.

"Oh, I've captured a strong player's stones!" Will you be happy and excited about this?

Maybe not. Look at white's great wall.

When white jumps here, the lower side is all white's, and the left side is already white's territory.

Let me show you how black should have responded.

Look at the result again, you should always avoid this sort of catastrophe.

You only need to consider one thing when white invades here.

You can simply play diagonal move.

If white pushes and cuts, in order to fight like this,

Black can block here and there's nothing white can do now.

So, what should white do? There's a way to live in the corner.

This is a good tesuji for white.

Black should block here to separate white's stones.

This is the only way for white to live in the corner. White's alive now.

However, this connection is sente for black.

If white doesn't answer, this move is good, and white can't live.

If white connects, black hanes and white can't cut and live.

White destroys all black's corner territory, but black can pincer here to attack.

This was the original position.

If white had played here first, white could have made a good position. But black can pincer here and attack now.

So, even though white's lived in the corner, the result up to here is favorable for black.

Because black can attack the single stone, and white can't develop at the top anymore.

Down here, black captured six stones in total, but the result was terrible.

White's outside influence is wonderful, and it was a typical example of black not seeing the forest for the trees.

Black was trapped perfectly, it's like a model example of a trick play.

So, what should black do instead?

Give white a small corner, in exchange for a nice wall and potential on the outside.

Trick plays.


You might recall this shape from the last lesson.

You learned about this pattern when white had a two-space extension here.

But, if there's knight's move like this, it's different.

In this position, it was important to note whether there was a white stone in the top right corner or not.

White can play this knight's move to create a good combination with this approach stone.

When there's already a white stone on the third line,

White's position is too low with this normal joseki.

So, this knight's move is better in this case, to create balance.

This is different to the position from last lesson, so black shouldn't respond in the same way.

There's a good move for black though, so you can still find a counter-strategy to white's trick play.

It'll be very exciting to learn and play this brilliant tesuji against strong players.

Let's have a look!

When there's a knight's move here, white doesn't normally prepare a ladder breaker.

That's because white doesn't think she needs to, but actually, white still needs to prepare.

So, if white doesn't make preparations, I can say he hasn't mastered this pattern, even if he's the stronger player.

But, there's a reason why white doesn't normally prepare a ladder breaker.

When black blocks, this is the vital point.

If black just connects and lets white connect too, it's bad for black, as you learned last time.

White stole black's base, and black's group is floating now. That's too bad.

Black's lost quite a lot of points, because black has a weak group.

So, just jumping like this is better than the previous variation.

Don't worry about the corner anymore, even though white can still come in here later.

But, if you want to block here and fight, you should master the possible variations first.

Black's strongest resistance to white's peep is this attachment.

Then white would cut, and black should extend, right?

White ataris and hanes, and black has to move out.

This move doesn't work for white.

If black cuts here (which is a mistake), then white can still capture the four stones in a ladder.

If white's stone was here, white could only drive the ladder towards the top.

However, white can change the direction of the ladder in this case.

This is the main difference between last lesson and today's one.

That's why white might not care about the position in the top right.

So, black shouldn't cut, but push from the right.

Even if white tries to escape, white can't survive.

So white shouldn't play like this.

Black might feel uneasy now, because he didn't expect the ladder towards the bottom.

Black should have considered the ladder, and may be flustered, because it doesn't favor black.

White would push again and then come back to save the two stones. What will you do now?

Will you cut here and hope that white doesn't see the ladder? You won't.

You may think that it can't be helped, and move out.

But then white comes back here, and black's corner stones are dead and left side ones are useless.

Furthermore, black's seven stones are heavy and floating, without a purpose.

How would you describe this result? 'Catastrophe' isn't a strong enough word.

Black's lost the value of the four stone handicap, and the game is rather good for white now.

The game's already been reversed and is good for white - in under 30 moves.

You may feel a sense of futility.

If you're playing at a Go club, with a bet on the game, can you ask to take back your move? You can't.

You'd feel terrible about this result, and the game would easily become worse afterwards.

However, there's one thing I want to show you.

You can counter white's tricky plan. You only need to know one move.

You're going to learn that move today.

White would happily play this trick play if there was the knight's move here.

It's nearly 100% certain. Then, you can try to pretend to look innocent and frightened.

After white plays here, white would feel very excited and happy - ecstatic even.

However, there's a brilliant tesuji for black now.

The ladder towards the top favors black, so black only needs to prevent the other one.

None of these moves were any good, but

Here it is! This attachment is marvelous!

Everything's alright for black now, and white's in a fair bit of trouble.

This ladder doesn't work for white, and the other one doesn't work either now.

So, white should connect here, and black shouldn't move out now.

Instead, black can cut here boldly. Something's changed.

The ladder towards top always favored black, but if white ataris above...

Now the second line attachment is working very well as a ladder breaker.

Even if white keeps going, it doesn't work because of the exchange.

White's in atari because of the attachment. Does that make sense?

If you know the attachment on the second line, you can counter white's trick play.

And you can even trick white, and ruin white's sweet plan!

This is another way to punish trick plays. Don't forget this brilliant tesuji!

Trick plays.


Now let's review a game.

This was a game between two 7d players on the Baduk N TV server.

This game features a pattern that's quite common in real games, and you can easily make mistakes.

Let's see what the mistakes were.

Against white's shoulder hit, black pushes through and cuts.

You can play like this when the ladder favors black.

But, it looks like black didn't consider that. He might have just wanted to fight here.

White played very well. That atari and push are the correct moves for white.

Black extended into the center, but the stones on the side are in trouble.

White's gained some points in the early opening, and the game's good for white.

White jumped and played a shoulder hit. I've already reviewed some games like this before.

And the majority of players played here.

Then, when black answers, they jump here. Quite a lot of players play like this.

White must already be quite a strong player. He pressed here.

If you already know this shoulder hit and can play it, you're not weak. You're a strong player.

Black's next move was wrong. This cut doesn't work when the ladder favors white.

Let's see what the difference between amateurs' and pros' choices for the next move is.

There's a tool called the 'pattern analyzer' on the Baduk N TV server. Let's see the result.

7d's and 8d's moves, based on a database of 20,000 games. What do you think's the most popular move?

A and B both are the top choices. It's nearly the same percentage.

A and B both are around 38%, and C is next. 12% of players chose the attachment.

Pros' moves, based on 10,000 games. Where would pros play most often?

Pros' choices are different. The majority of pros played at A, the attachment - 51%.

B is at 22%, which was black's choice in this game.

C's at 16%. Unexpectedly, D was also played fairly often - 9.4% of the time - by pros.

We can see that pros are more concerned about the corner territory, while amateurs rather like fighting.

I assume that the ways of thinking and playing are different.

Let's go back to the game. Black pushed through and cut here in the game.

Black should usually only play like this when the ladder favors for black.

White played very well in the game. The atari and push under is right.

If the ladder favors black, black can play like this.

Which means, if the ladder favors for black, white shouldn't play like this.

It looks like black can capture white, because if white extends, black can atari and capture.

But white made a mistake here. White can cut here first.

Black has to extend, and white ataris here now.

If black extends, white can capture black in a ladder like this.

Don't be confused about the ladder. Black can't fight when the ladder doesn't favor him.

Black should play like this instead.

This is a joseki, and it's good for both.

But, the result in the actual game was bad for black.

Black pushed through and cut to fight, but black soon realized that the ladder didn't work.

After black extends, white should reinforce with the tiger's mouth.

Black's two stones are captured now.

Actually, blocking here gave black a chance to escape.

This was sente for black, white needs one more move on the outside.

And black jumps here to save them. Black can try to escape even if the shape isn't that good.

However, white's next few moves were very good.

Black extended, and it was right. If black just blocks, white can capture black like this.

Therefore, black extended here patiently, and it was the right choice.

The next sequence was alright for both, and black saved all the stones.

What do you think about this result? Even if black could save all of his stones, the game's still good for white.

White settled while destroying black's corner, so black couldn't get a good result.

Furthermore, white can attack black's center stones later, so it's tough for black to catch up.

Black tried to fight without considering the ladder, and it went wrong.

Black can push through and cut to fight when the ladder favors black.

There are many trick plays which are related to ladders.

When your opponent tries a trick play, check the ladder first. That will be a useful way to avoid traps.

Don't forget to check the ladder first, and then try to punish white's trick plays.

See you next time!

Trick plays.


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