Answers To The Hane Discussion
- Increases liberties
- Threatens to cut the hane next
2. Rather HaneKaeshi or CrossCut
Of course, the surrounding conditions make a big difference, but in general I think that the extension is not so good. It gives the opponent the opportunity to make good shape.
If Black continues with Black 3, the shape is the same as if Black had played hane at the head of two stones. (See BasicInstinct 4.)
But perhaps the counter-hane should be the first thing to think about.
KarlKnechtel: How about this atari-atari? If Black is protected on either side (e.g. by a stone at any of the marked points, or some other ladder breaker) then there is time to protect on the other, and it's like one giant crosscut. Otherwise probably not good for Black overall, though.
Black 1 can play atari with sente, but then Black has two cutting points at a and b to worry about.