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BeginnerExercise27

 

Beginner Exercise 27 Solution
  Difficulty: Beginner   Keywords: Problem

KarlKnechtel:

[Diagram]
Diag.: 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]
Diag.: Black saves the groups

Black 3 threatens to capture and thus connect the groups, so White must fill. Black 5 makes the necessary eyes.


[Diagram]
Diag.: Black saves the groups

Any other inside play, or a play at the squared point, is met by Black 3, which gives atari and also settles the eye space into a bent four. The circled points are miai to divide the space.


[Diagram]
Diag.: Black saves the groups

If White fills, Black can still claim enough eye space this way. In this variation White can't play 6 at 7 because of damezumari, and Black captures to make two eyes.


[Diagram]
Diag.: Black saves the groups

Similarly here.





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(OC) 2003 the Authors, published under the OpenContent License V1.0.