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BeginnerExercise11

 

Beginner Exercise 11 Solution
  Difficulty: Beginner   Keywords: Problem

Here I present a solution, which I attempt to make as simple as possible, as well as involving the smallest area on the go board as possible. There are other possible variations, please see Beginner Exercise 11 Discussion. --unkx80


[Diagram]
Diag.: Solution.

There is death in the hane. Black reduces White's eye space twice, and then makes the nakade (placement) inside, reducing White to one eye. If White captures at 6 and 8, Black can answer at 7 and 9 and White has no way out.

Note: Black 7 can be played at a instead. Likewise, Black 9 can be played at b instead.


[Diagram]
Diag.: Variation 1.

If White plays sagari at 2, Black 3 reduces the eye space further and Black 5 makes a placement, reducing white to just one eye. White 8 captures two stones...


[Diagram]
Diag.: Variation 1.

Black 1 makes a throw-in and turns it into a false eye. If White tries to escape with 2, Black makes a net with 3. It is not possible for White to get out.


[Diagram]
Diag.: Variation 2.

White 2 is tricky. Black 3 is one way, but there are other possible answers. When White 6 captures, Black can actually defend at 7 as White has not enough eye space.



[Diagram]
Diag.: Pitfall.

In the Solution diagram, when white 1 captures a stone, Black should refrain from playing the atari at 2. It gives White 3 a possibility to open up a ko. If Black tries to avoid the ko with 4 onwards, eventually he is caught in a net by White 7 and still has to fight the ko.


[Diagram]
Diag.: Acceptable.

Black 1 here is acceptable. After White 2, now Black 3 can make the atari. There is no way for White to open up a ko.





This is a copy of the living page "Beginner Exercise 11 Solution" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.