3-4 point low approach two-space high pincer press extend

Running along  

If Black runs along with and jumps to , White probably plays and for good shape and space in the corner.

Follow up (sente)  

White sacrifices to gain sente, now Black can't advance into the corner with a, because White left the double atari of b behind.

Another way to play (complications)  

Question

A different  

What about this ? -Jared May 20th 2005

Tapir: Take a look at the follow ups I added above. Granting an additional liberty at the circled point makes them impossible. When is at a, those follow ups don't exist anyway, then White prefers to defend the corner more strongly, i.e. to be able to answer the hane by a counterhane.