Gokyo Shumyo, Section 1, Problem 47 / Solution

Under the stones

The solution includes a ishi no shita tesuji. After , a is a vital point.

Under the stones

Black sacrifices two stones, hoping to destroy the eye by giving atari with at .

Under the stones

White makes the surprising move at , allowing Black to capture four stones!

Under the stones

In the space created by the four captured stones, White can recapture two stones.

Pitfalls

Pitfall 1

Obviously, White mustn't answer at here.

Pitfall 2

If White hastily answers the atari by (temporarily) saving her stones with , kills.

No Under the stones

If White fails to make the four-stone sacrifice, and connects at here, then takes three stones, and there is not enough room to play "underneath".

Failure

makes one eye in the corner. makes miai of a and b to take away the other eye.

Inferior for Black

here would allow White to live in ko.

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Gokyo Shumyo, Section 1, Problem 47 / Solution last edited by Unkx80 on September 13, 2005 - 16:22