Solution  

captures the corner.

 

White can try the same thing on the other side, but successfully stops the white group from escaping.

Attempt  

shevious: However, Black is not good.
White will make the same shape at both sides, and...

Attempt continued  

White is a good move and can escape by double ko.

Main line  

Black and are the right moves.

Main line - continued  

For White , Black will catch three White stones.
(Black at )
Original White stones cannot escape.

 

Most of other results in White escapes towards the side.

Cont.  

Notice the jump at is important. Eventually, Black will have to allow White to make an eye or the black structure collapes. See also very artificial problem and its attempt page.

 

Does this work?

Even if it works, it is not as elegant.

See discussion page for more detail.