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How the yes no detective game works, the question ladder that moves a case forward, and how to play it solo against an AI host.

What situation puzzles are, how the yes/no questions work, and a practical question strategy for getting unstuck on lateral thinking puzzles.

The whole genre traces back to a 1992 book, a 2004 German card game, and a bowl of soup.

The rules take 30 seconds. The rest is just asking questions until you stop being wrong about everything.

Kids play these differently than adults — messier, more creative, and sometimes better. Here's what to expect and which puzzles to start with.