Beginner Exercise 137 / Attempts

White to play.  

Zephi: Black already looks pretty alive on the right (and I suppose it would be pretty disaterous for white if he linked up the two groups). However, it looks like white can put black into a state of terminal atari on the left (since it's white first.) I think it would look something like this:

This may be simplistic, but it looks like it could work.  

Niklaus: What do you mean by terminal atari? The best I see for white is a ko to capture three stones on the right.

Ko  

The same can be achieved without the , exchange: