4-4 point low approach attachment, 3-3 invasion
Suppose White invades in answer to .
It is expected that Black will play , as in that game, for the sake of good shape.
Clearly what happens next depends very much on the adjacent side positions.
Andy Pierce: I recently got a good result playing this as white in a handicap game. By attaching, black wanted to settle the position early and put a good chunk of territory in the bank. I invaded at 3-3 primarily to deny black his intent and give him something unexpected to think about. I also found the residual aji of to be useful, although I never actually tried to move this stone.