# Lucky's Problem / Solution

### Original problem

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

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

If , the standard reply at stops Black cold.

Against and , and squeezes Black in the other direction.

### Modified problem

The solution to the modified problem is the same as the original problem except...

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

See /Discussion for more.