# Flying Saucer Shape

Keywords: Life & Death

### The Flying Saucer Shape is dead

The Flying Saucer Shape is dead

The critical elements are

1. the black group's weak spots are occupied by White ( stones),
2. the black group is blocked on the second line at both ends ( stones), and
3. these white blocking stones are connected to the rest of the white group ( stones).

It is not critical whether the circled liberties are occupied or not.

For an example of a flying saucer position where the third critical element is missing, see Gokyo Shumyo, Section 1, Problem 23.

For a general treatment, see Two Space Notchers Not Fully Connected.

### Black Attempts to Live

Attempt 1

White cuts at the other side than the one Black protects, then gives atari. She finishes off with , keeping Black at one eye. The position is symmetric, so if at 3 then at 5.

Attempt 2

Black ends up with a 3 point big eye with already at the vital point.

Attempt 3

After , Black has a shape similar to six on the second row. He's dead. gives major resistance, but after , she can almost fill Black's eye space with three stones any time.

Attempt 4

This reverts to attempt 3.

Attempt 5
Attempt 5 - alternative

### Applications

Flying Saucer Shape last edited by RobertPauli on November 30, 2017 - 14:58