DoubleSnapback/ Solution 4

Solution  

The double snapback is the move. In this problem, any reordering of the moves will fail.

Variation  

makes miai of a and b.

Variation  

Double shortage of liberties.

Tapir: Sure white loses stones, but is alive after . He doesn't need to approach / but can capture them directly. No? But the loss is bigger than simply at , Black has to take the corner, white ends with 5 points territory, black has gained ten points in the corner (deiri afaic).

Best play  

unkx80: I suspect the best play is simply to leave it alone after . Later, White a - Black b, White c - Black d are sente. Exactly like what you said, and I agree that the swing is 10 points.

Failure  

Wrong order at . Now can atari this way.

Failure  

Wrong order at . With the descent at , now can connect to prevent the double snapback.

Failure  

Wrong order at . Same as above.