Black first
Gorgeous answer dividing line——————————————————————————————————————————————————————————————————————————————————————————————————————————
Positive Solution Diagram (1)
In the face of their own defects, the black 1 dig and 3 bit clip deliberately grasp the upper white gas (continued in the picture below).
The positive solution continues
After breaking it off, Black can make up for the breakpoint while collecting the gas and killing the chess piece, killing two birds with one stone.
Failure plot
The lower method of black 1 tor is a bit flashy at this moment, and the white 2 can easily break the siege.