HermanHiddema/Sandbox

Black attempts to connect.  

Now, white must prevent black from connecting under, for which there are three possible moves: a, b and c. Any other move, and Black can play c to connect.

Obvious failure  

This option fails easily. White gets cut and loses his stones.

Also getting cut  

The kosumi also fails for the same reason.

Strongest resistance  

The descent is the strongest move. Now white's stones on the right are safe, but those on the left are caught because of White's damezumari on the right.

Black to play  

Other

Move 32  

should be at a. With this move there is still a possible black invasion at a or b.

White is alive  

See also 5x5

tsumego  

How should black respond to ?

corner  

Black cuts with . How should white respond?