Here are five new lateral thinking puzzles to test your wits and stump your friends -- play along with us as we try to untangle some perplexing situations using yes-or-no questions.

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Here are the sources for this week's puzzles. In a couple of places we've included links to further information -- these contain spoilers, so don't click until you've listened to the episode:

Hotel: Listener Paul Sophocleous

Train: Listener Sean Gilbertson

Safe (more information): Listener David White

Robber (more information): Sharon Ross

Murder: Paul Sloane and Des MacHale, Intriguing Lateral Thinking Puzzles, 1996

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If you have any questions or comments you can reach us at podcast@futilitycloset.com. Thanks for listening!