Imagist/DifficultProblemSolution

 

All sequences start with the hane at . If white responds simply with , the throw in at is a brilliant tesuji, because after white captures at ...

 

The throw in at is both an atari and a broken snapback. W can escape the snapback at "a", but then black captures at "c". W can capture at "b", but then black plays snapback at .

 

If , then connects. The rest is the same as the above diagrams.