XuanxuanQijingProblem53/Solution

Main line (1)  

to sequence is natural. Next sequence may be the real problem.

Main line (2)  

, , and sequence is critical. White cannot move to a because of shortage of liberties.

wrong order - Failure  

For first, White can live.

Easy to mistake  

instead of a is a mistake, too. White can catch by oiotoshi.

Attempt  

For , white can live at least by ko.