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November 1997's Go Answer of the Month

Dia 1 - Black to play and live unconditionally.

It is apparent that Black can get one eye only in the centre of the board. The problem is therefore to make an eye on the edge.

Dia 2 - Atari on the upper stone.

This doesn't work since the ataried stone can link out and white is protected by its ability to capture black .

Dia 3 - Atari on the lower stone.

8 at 3.

This is no better, Black tries a throw-in with 3, but it is too slow and he fails to make an eye by capture.

Increasing a sacrifice by extending the ataried lower stone at 2 is no help. White just answers above 2 and attacks on the upper white stone are still too slow.

Dia 4 - The solution is a jump to the edge.

And now White cannot fill at 3 with 6 as all four stones would be captured. He has to play 6 allowing the capture of 4 and .

A Black play at 4 makes an eye on the edge. A Black play below 5 makes two eyes on the edge.

Dia 5 - If White 2 responds by protecting the upper stone.

Black is able to rescue his ataried lower stone and make an eye on capturing the lower white stone.

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