BeginnerExercise145/Attempts

Kill B  

If Black plays a, then b and c are miai, as are d and e. So we mostly have to look at these five for White's initial move.

Possible start  

This particular sequence leads to one wall falling and allowing white to break through due the double atari at a & b. I'm not sure if there's a better way of reacting to white's moves, as trying to move directly against the inside white lets her secure a number of key points and through the gate, so to speak.