Lucky's Problem / Solution

Solution  

loosely surrounds the two black stones. The stone is in just the right place to prevent Black from pushing out along the right side.

Variation 1 (7 at 2)  

If , White plays and squeezes Black. completes a nice symmetrical shape.

Variation 2  

If , the standard reply at stops Black cold.

Variation 3  

This seems the most interesting, but it looks like the combination of and prevents Black from getting away. White has to be careful and connect at against . Now Black is again short of liberties after . If next Black at a, White plays b.

Variation 4  

Against and , and squeezes Black in the other direction.

Variation 1  

The only move here is , which may be a kind of a blind spot.

Variation  

Compared to the original problem, must be played here instead. Playing at a turns it into a ko.