Beginner Exercise 27 / Solution

Sub-page of BeginnerExercise27

KarlKnechtel:

[Diagram]

Black saves the groups

Any a play is answered by either b; and vice versa. Thus Black secures eyes on the left group. So White attacks on the right. It looks like Black won't have enough eye space. But the cutting point (circled) proves fatal to White's plans.

[Diagram]

Black saves the groups

B3 threatens to capture and thus connect the groups, so White must fill. B5 makes the necessary eyes.

[Diagram]

Black saves the groups

Any other inside play, or a play at the squared point, is met by B3, which gives atari and also settles the eye space into a bent four. The circled points are miai to divide the space.

[Diagram]

Black saves the groups

If White fills, Black can still claim enough eye space this way. In this variation White can't play W6 at B7 because of shortage of liberties, and Black captures to make two eyes.

[Diagram]

Black saves the groups

Similarly here.



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