Stones must have two eyes to live, but in some unusual cases, Black and White can live together without two eyes.

The four black stones and three white stones are cut off and have no eyes. But these stones cannot capture or be captured by each other.

If Black plays I, Black will be in atari, so White can capture.

But if White plays 1, White will be in atari, so Black can capture. This is a mysterious shape in which the first person to play here is captured. Therefore, no one wants to play here, and since one doesn't have to play, a local stalemate is the result.

This is called dual life.

Overview
1. What is Go?
2. How the Game is Played
3. Capturing
4. The Point Without Liberties
5. Gaining Liberties by Capturing
6. Life and Death
7. A Special Form of Life
8. The Rule of Ko
9. Ending the Game