Lonestar: If Black answers at , White gets one eye with . The second eye White gets by the capture of the marked black stones.
Playing 1 at 3 for the start looked like a good solution, but a black reply at a takes the bottom white stones
PaulL: Wouldn't at A be self-atari?
JoelR: Only with on the board. The comment is that White can't skip the / before making the eye at top.
If Black answers at , White gets two eyes at the bottom with a play at or a.
HolIgor: Which move is better? or a?
Lonestar: Maybe a is better?!
This is better for White, because if Black plays at a, White does not need to answer, or White has the follow-up at a??
unkx80: The play at a is better, for both the reasons you just stated.
agong: What about this variation? Aren't a and b now miai for life, or am I missing something?
Never mind. Black 2 should be played at a. White can't cut at b. I'll leave the diagram up for reference.