Beginner Exercise 238 / Solution

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Table of contents Table of diagrams
Analysis.
Failure.
Solution.
Solution.
Solution.

Analysis

[Diagram]

Analysis.

Looks like White has plenty of weaknesses here:

  • Black a can capture two White stones and make one eye, but no more.
  • Black b makes capturing two White stones at c and making two eyes at d miai.
  • Allowing Black to play both e and f capture two White stones.

In particular, how to prevent a Black move at b?



Failure

[Diagram]

Failure.

W1 and W3 seems to do the trick, but B4 makes a and B6 miai, so Black lives.

If W1 at W3, then Black plays at B4 and lives too.



Solution

[Diagram]

Solution.

The trick is to atari at W1, which automatically prevents a Black move at a. If B2 connects, then a Black move at b is now useless, and W3 kills.

[Diagram]

Solution.

If B2, then W3 kills just as well.

[Diagram]

Solution.

Although B2 can capture two White stones, Black has only one eye after W3.


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