Beginner Exercise 204 / Solution

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Solution

[Diagram]

Solution

In this problem, Black cannot live unconditionally. We start off by playing at B1, which reduces the liberties of the WC stones by one.

[Diagram]

Solution

If W2 wants to kill, then the number of liberties of the WC stones is further reduced by one. This enables B3 to start a ko for life.



Failure

[Diagram]

Failure

Although B1 also reduces the number of liberties of the WC stones by one, W2 destroys the eye and does not have to reduce the number of liberties of the WC stones. So Black loses the capturing race.

[Diagram]

Failure

Although cutting at B1 seems like a reasonable move, W2 is a clever move that kills.



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(OC) 2007 the Authors, published under the OpenContent License V1.0.
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