Gokyo Shumyo, Section 1, Problem 48 / Solution

Life  

makes miai of a and b. The circled point provides the other eye.

Main line  

Thanks to the position of and the throw-in at , there is shortage of liberties.

Variation  

If White stretches at , captures two stones in a snapback.

Variation  

To demonstrate the miai, if White connects at , Black makes an eye, capturing in a net.

Anti-suji  

Many players would play the atari. Now White no longer fears shortage of liberties, and Black is dead. This is terribly vulgar. It does not use at all.

Failure  

( at )

Other will see the throw-in at , and then follow this diagram. seems to work, but White simply ataris at and Black can't connect at a - shortage of liberties!