Danger

Knocks in the Pipe

Level 2 · Medium

After a mine collapse, a watchman hears knocks from the water pipe in an empty warehouse. He switches off the pump to listen more clearly; the knocks continue. He asks rescuers to follow the pipe underground.

1. Choose a narrator: they read the answer privately and hide it.
2. Read the premise aloud. Answers: yes, no or irrelevant.
3. When the game ends, mark the puzzle as played.