Beginner Exercise 129 / Solution

Solution  

, atari the two stones. If White connects at a, White dies in gote.

Solution  

After , a and b are miai, so the white group has only one eye.

Variation - wrong  

White might try to play hane at in order to play in sente. If black gives the usual answer, a and b are miai for life. If is answered with white would have a chance to escape at .The correct answer is to keep following on the second line with or throw-in at to reduce eyespace.

Variation - correct  

After the throw-in at , a and b are miai for black to kill.

Failure  

One of the simplest refutation to the hane of is . After and , it is not possible for Black to play at a.

Failure  

The squeeze of allows White to play atari in the direction of .

Caveat  

Atari at is a mistake. After , White cannot play at a, so White is dead.

Failure  

White lives easily.