Beginner Exercise 49 / Solution

Sub-page of BeginnerExercise49
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Solution

The solution is to capture at B1.

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Black lives

If White tries to escape with W2, then Black B3 makes two eyes and lives.

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White captured I

White cannot escape now.

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White captured II

White cannot play inside anymore and Black is alive.


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Black still lives

Even with an additional stone helping White to connect, Black lives.


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Failure I

The connection at B1 is a failure, because after W2, Black has only one eye.

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Failure II

Directly preventing the white+circle stone from connecting is also a mistake. After W2, White dies with a farmer's hat big eye dead shape.

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Failure III

If B1 here, W2 sets up a ko which Black must win in order to live. Since Black can live unconditionally, this is not the best result.

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Continuation of Failure III: too clever

satyreyes: It does not help black to threaten with B1. Quite the contrary; after W2 and B3 black is left with a pyramid four in gote and dies.


splice, unkx80



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