BadukMovies
Episode #57 The most common jeongseok
Today we are happy to be able to present you a lecture created by Baek Jihee.
She's a 2dan professional, currently studying for her Masters in Baduk, in Korea.
She's studying at the Myongji University.
In 2003 she became professional. And in 2010 she was promoted to 2dan professional.
Let's have a look at what she has prepared.
This is a common joseki, which you can see, and you all probably know it.
Let us look at the continuations for both white and black, after this joseki is being played.
Let us start with saying that A, B and C are possible moves for white.
D for white is a bad move. Which is quite surprising.
And E for white is a trick play, which is difficult to answer.
It's a surprising move, so you might want to try it out to surprise your opponent.
We're going to study how to handle these moves as white, and we're also going to look at how black can play after this joseki, if white plays tenuki.
So let's start with this move.
This move is famous because it is often played by Lee Changho 9dan professional.
It looks very slow but it's a good move and a very solid move.
And we will have a look later at why it is a good move.
Black can answer with a knight's enclosure.
And white will approach on the upper side.
This is an easy way to play.
Black plays high here on the 4th line because he already has a low stone at A on the 3rd line.
This makes a good balance.
In go you often want to try to make waves.
Maybe also in other things than go, but waves are good in go.
One stone high and one stone low.
After this, this jump for white is a nice point.
If white does not play this move, then black has a nice combination.
White peeps here but black does not connect, but tries to make his framework bigger.
Black will use the combination of 1 and 3 to also flatten the lower white side.
White can't play the hane at A because this move for black, [A], is always sente because black can capture the white group at [B].
Let's have a look at another position.
When white already has the [A] stone in place, it is not good for black to push up here.
Because this will help white to become stronger at the lower side.
White will hane here and black has a weakness at A to worry about.
He still has to come back.
Instead, in this kind of position, there is a surprising move which is this one.
This is a very nice and solid move for black.
And can be played without fear.
Next black can aim to play at A or B.
It's more or less a miai situation.
If we go back a bit to this position, we saw that white can approach the upper right corner.
But white can also use this aji.
White can approach here, aiming to play at A later.
Playing here starts a bit of a complicated variation.
Let's begin with the simple variation first.
That's just playing simply here.
This is a very simple and clear move. It's a little bit crude, but after this you can play tenuki as black.
So this is certainly possible for black.
However, [this] starts a bit more complicated variation.
White has 2 options after this.
White can either play here..
Or..cut!
Let's have a look at the cut first.
Black has to reinforce for his two stones, and white extends...
And after this white can jump.
Mind that white does not have to make the exchange of [1] for [2], because it is sente anytime.
So black can not cut white.
What we mean is: when black tries to capture this stone..
White can simply push [here], and when black defends..white can connect in sente.
Instead of [this] move, white can also take it more easy and just extend.
After this hane it's very tricky and black has to be careful.
If black plays the cut now, he makes a mistake.
White will force black into a bad shape by playing atari here and then blocking on this side.
This block becomes sente for white, because otherwise white will go through at [1]
White got very strong on the outside.
So instead of cutting immediately, first black has to push.
If white extends, black will cut anyway. This is good.
Instead of pushing here, white can also play the hane.
Black will answer with this strange move.
Eventhough it's an empty triangle, it's a good move because A and B are miai.
When white defends here the cut works again for black.
And if white protects the cut, then black will create some aji in white's position.
After this it's not urgent for black to save the 2 stones. Black will play on the second line.
If black omits this move then white can play [this] move and destroy a lot of black's territory.
When white plays [here], we've seen that black plays the keima.
But if black plays somewhere else, white will approach this corner.
It's a nice placement for white.
This is why [this] is a good move for black.
When white approaches here..black is a little bit cramped.
White will play on the second line here and white is happy.
Black feels under pressure.
In [episode #5 Payback time] we've seen this shape.
If black plays hane it's a little bit dangerous. White has this tough spot.
After this white will hollow out the corner.
And black is in a lot of trouble.
So instead of playing the hane it's better for black to just jump away.
However, black doesn't have a solid base.
Check out [episode #5] if you're interested.
Now that we have seen what happens when white plays [here], let's have a look at [this] move.
Why is this such a bad move?
It's quite surprising that it's bad because it looks like white is doing good moves, and he's making territory.
Yes, the lower side looks quite nice, right?
Right. But black has [this] move!
It's a painful invasion.
Black can still live inside white's territory.
Black can live because he has [this] aji. This helps a lot in combination with the black stone at [A].
Let's see how black can link these stones.
Black destroys all of white's territory and is happy.
How about jumping to here?
Yea, it looks like a solid or strong move. But in fact it's not good.
[This] move is very urgent because it prevents white from invading at the 3-3 point.
If white plays here to protect against the invasion, black will play like this.
The [shoulder-hit] is the [vital point].
White is flattened.
After black got the lower right corner he also succeeded in reducing white's framework.
This is ofcourse good for black.
Instead of defending here, white can also consider defending the lower side.
However, this is actually quite small because black has very good endgame here.
White's territory is not that big. It will be reduced greatly.
The last possibility for white, after black plays [here], is to simply play tenuki.
However, this leaves a very big hole here.
Black will invade, giving white a very hard time. Black continues at A, B or C to handle the situation.
White has a very thin shape.
So now we've seen that this is a bad move for white.
How about approaching from [this] side?
This one?
Yes.
Yes! White can also approach from here.
Black answers normally.
But now this is a very big point. And this is the reason why Lee Changho chooses to play [this move].
Ah. He doesn't want to get under pressure as white.
Right.
So let's maybe first have a look what happens when black [doesn't] play like this, but plays [here], this is the normal move..
It's also a possibility, however, it gives white the chance to choose between the normal joseki - playing at [A] - and approaching the corner at [B].
This would be normal but now white can also play [here] to strengthen his own group in the lower left.
And to attack the black group. So this would be a nice move.
So that's why black [doesn't] play here. He doesn't want to give white the chance to play [here].
So black attacks, himself, immediately.
And this also puts pressure on white's group right?
Right!
Black has two ways to answer to this invasion, which is the only move for white.
In this situation, this is a nice move.
Oh! We have not seen this one before, right?
Right.
So white needs to link up.
And black will play on top.
So black also links up. And black seems to gain a lot of thickness on the outside.
After black makes this thickness, maybe white should go out?
Right. White needs to go out here.
And these are good moves because if white omits [this] move..
.. then black will play this move.
Ah, and it will become sente aswell. Because white still needs to live.
Yes, white's group doesn't have two eyes yet.
Also, black gets major influence here. It's too good for black.
So instead of going up here, which was one possibility, black can also choose to play [here]..
However, we added a few stones..
Black needs to have a stone at [A] and at [B], but the stone at [A] is crucial because there will be a ladder.
And if black has all these stones, then [this] will become a very powerful move.
Black can cut here and then link up on the 1st line.
And white can not capture the [triangle] stone, because the ladder will be good for black because of the stone at [A].
How about when black does not have these 2 stones in place..
When black [then] will play this move..
.. white can link up his stones.
[This] ofcourse is not a good move. It's very ugly shape. And white will be in trouble.
But instead of this, white sacrifices one stone. And connects underneath.
Since white didn't have big territory in this area anyway, black didn't gain much in these exchanges.
Let's see another overall board position.
Here white has nice shape on the lower side.
[This], in this case, is an excellent move to expand white's framework.
After black calmly answers..
..he can later aim at this point. Which is the weak point of white's shape.
Instead of calmly answering, if black plays tenuki, white can play [here].
This is the sente move that white can use in a lot of situations.
Black has to respond and now white made himself a little bit stronger in the area.
White also has a move available which is [gote].
This move was [sente], but when white will play here it is [gote].
However, it has a better follow-up.
So black will not answer this move but afterwards white can take away all the territory of black in the corner.
And gain a lot of thickness on the outside.
Black will have to live very small.
So when you're white and you play [this keima], it has some benefits but also some demerits.
Because it is a [gote move].
Let's have a look at another position.
White can also approach from this side, instead of playing this keima.
And this is also a good move to make the lower side more solid.
Especially when the white shape in the lower side is good.
Playing like [this] will make the white territory solid. So this is a mistake by black.
White is happy.
Instead black can consider just playing [here].
This is a move that we've seen before and it's quite simple but effective.
After this black can take sente and he can flatten white.
Regarding the joseki in the lower left corner, this is a [vital point] to reduce white's shape.
This is standard way to make shape for black, we've also seen this before.
Now let's finish with a kind of fun move.
Let's have a look at this one.
A tricky move!
Yes. The idea is ofcourse that when black extends here, white can cut. He was dreaming of this!
Yea. This is beautiful for white.
So instead black can try to capture the white stone.
This looks like a very natural move. But in fact it's not that great.
White can cross-cut here!
And he can capture the stone and come back on the lower side.
In this case white got something on both sides. And he is solid. So white's trick move was successful.
So how about instead of pulling back [here], why not capture this stone?
Yes, this looks also normal, but then white can give atari and stretch on the 3rd line.
It's also good for white, because black is very flat.
So instead of playing this hane, the strange move by connecting [here] immediately, is the [right one].
Surprising.
The best white can do is play hane, but he forces black to go through.
The black stone at [B] is a little bit painful. However, white gained a little bit of profit on the left side, compared to white's usual approach at [A].
The two white stones on the left however are also very vulnerable to attack.
We hope you liked this first lesson made by Baek Jihee. And we also hope that you will consider subscribing to BadukMovies Pro.
So that we can bring you more episodes made by her.
See you next time!