gambino21: What is a good response to the pincer at 3? I think that 'a' would be a good response. What about 'b' or 'c'?
Bill: Don't forget d.
And I wouldn't call a pincer. A double kakari, maybe. But why dignify it with a name? It is inconsistent. If White wanted to play , better not play first.
are perfectly common moves. is a very strange move. Perhaps this move order inversion clarifies the already apparent strangeness. In local context, is the only move: the hane reduces the white stone to 2 liberties, while making a hanging connection. A wider context may justify other moves. Dieter
It seems like, as a rough guideline, white should wedge if possible, and hane otherwise. Is that reasonable? -Martin
Andy: This isn't strange at all, it is a standard double kakari transposition. see 44PointDoubleLowApproachAttach