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Futility Closet

May 1, 2017

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.

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:

Puzzle #1 was contributed by listener Dave Lawrence.

Puzzle #2 is from listener Michael Berman.

Puzzle #3 is from Paul Sloane and Des MacHale's Ingenious Lateral Thinking Puzzles, 1998.

Puzzle #4 is from listener Paul Sophocleous. Here are two associated links.

Puzzle #5 is from listener Noah Kurland. Here's an associated link.

You can listen using the player above, download this episode directly, or subscribe on iTunes or Google Play Music or via the RSS feed at

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Many thanks to Doug Ross for the music in this episode.

If you have any questions or comments you can reach us at Thanks for listening!