Beginner Exercise 11 / Solution

Sub-page of BeginnerExercise11
[Diagram]

Solution

There is death in the hane. Black reduces White's eye space twice, and then makes the nakade inside, reducing White to one eye. If White captures at W6 and W8, Black can answer at B7 and B9 and White has no way out.

Note: B7 can be played at a instead. Likewise, B9 can be played at b instead.

[Diagram]

Variation 1

If White descends at W2, B3 reduces the eye space further and B5 nakade reduces White to just one eye. W8 captures two stones...

[Diagram]

Variation 1

B1 makes a throw-in and turns it into a false eye. If White tries to escape with W2, Black makes a net with B3. It is not possible for White to get out.

[Diagram]

Variation 2

W2 is for example met by B3. White has not enough eyespace.


[Diagram]

Pitfall

In the Solution diagram, when W1 captures a stone, Black should refrain from playing the atari at B2. It gives W3 a possibility to open up a ko. If Black tries to avoid the ko with B4 onwards, eventually he is caught in a net by W7 and still has to fight the ko.


[Diagram]

Failure

The hasty nakade in the middle results in a seki.

[Diagram]

Variation

B3 hane is met by W4, separating the eyespace to two eyes.


See also



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