Episode #6 Keima on the second line
Hi y'all. In this episode we would like to show you some variations that can occur when white plays this keima.
Let's first see why you would want to play this instead of the normal corner defense.
Playing [this] high one point jump is common. And it can not be said to be bad.
However, it does go against the principle of playing away from your strength.
White already has a strong position with the marked stones at the top. And making it even stronger is not the most active way if playing.
Instead, this [keima] onto the second line is more active and severe.
Black has several ways of replying, ranging from [A] to [E].
Let's first start with [A].
This move aims at attacking the weaknesses in white's shape. It is frequently used in pro games where black wants to destroy white's potential territory at the top.
However, it is also often an [overplay].
So be careful when to experiment with this one.
[This] is the proper response.
Locally, the exchange of white's [kosumi] for black's [extension] is good for black.
But white seperates the two black groups.
This is a joseki pattern.
Here the result favours white according to the book "21st century new openings" written by Kim Sung-rae 4p.
Black is pressured hard and needs to look after his two weak groups.
White makes good use of his strong position with the marked stones on the top.
Instead of [A] black can try something similar with [B].
This is another option to pressure the weaknesses in white's shape.
There seem to be no fixed patterns yet and this move is played less often by professionals as an opening joseki, but is often kept as aji for later.
Playing [hane] on the [outside] or the [inside] are the only two answers white can consider.
[This] variation depends heavily on white's stones in the [A] area.
Because white has reinforcements, he can attack severely.
White takes territory and black has to run. Black however did destroy the corner and upper territory.
[This] is another tactic, applied my Ma Xiaochun 9p. Black was played by Guo Juan, a Chinese 5p living in Amsterdam.
See the episode's [bonus tab] to see their game.
This strategy involves a ladder. Can you find it?
[This] is a beautiful tesuji to make [eyeshape] in the corner. However, it depends on a [ladder].
If white tries to kill black, the ladder shows itself.
All these moves are forced. Now black can play the ladder.
We've seen two moves that aim at invading the top. Now let's see [C].
This is another good move for black. However, it also involves a [ladder].
Black needs the ladder to be able to play this block.
Let's see the variations.
White attacks!
Black exploits the weakness left behind in white's shape.
If black jumps, white also jumps. Leaving a disastrous result for black.
Points for white and a weak group for black.
That's why black needs [this tesuji] to escape in nice style.
Wrong!
When the ladder is good for black, white can not extend here, because black can [cut].
Ouch.
Black captures white in a ladder, so.. white has to connect when the ladder is favourable for black.
Black's shape move is to play at [A] now.
But playing here immediately is wrong.
As you can see, black's shape is horrible. His stones are clustered together and inefficient.
So before jumping at [A], black can try [this]. Tesuji!
Exchanging [A] for [B] makes the peep harder to play for white.
[A] is not as powerful for white as before.
Instead of attacking black, white can also choose to simply defend his corner and secure cash.
This is an easy sequence to remember.
When the ladder is [not] good for black, he can choose to play at [D] or [E].
After white's [keima], this [ogeima] is a calm strategy for black.
White can choose to attack it easily at [A] or to put some more pressure on black with [B].
White plays calm and both players end up with a stable position.
White can also try this [severe] move. If black resists a very complicated fight will follow.
This fight is not bad for white as he has many supporting stones in the surroundings.
Black can also simply [block] to defend his base.
White connects his stones and forces black to fix his weakness at [A].
Both sides are solid.
This is the only move for white.
Black can play the [shoulder-hit] at [A].
Instead of the [ogeima] black can also jump one space further.
White can play the same move as before.
This leads to many more complicated variations.
And this is the most straightforward one, but also most likely not the best.
The main disadvantage of this black group is the black stone at [A]. What exactly is it doing there?
This atari initiates all the difficult variations. We attach some interesting pro games to the [bonus tab], for if you're interested in studying this.
Finally, [this] is another way of attacking for white.
It leaves less possible reactions for black and returns to the previous sequence.
The same position as we showed earlier. Complicated fights are about to start.
Thanks once again for watching. We hope you try out this [attacking keima] instead of other more common moves.
Keep fighting and see you next time.