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Futility Closet

Jan 1, 2018

Here are six new lateral thinking puzzles -- 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 few places we've included links to further information -- these contain spoilers, so don't click until you've listened to the episode:

Puzzle #1 is adapted from an item that Sharon heard on the podcast No Such Thing as a Fish. Here are two corroborating links.

Puzzle #2 is from listener Simon Grimes.

Puzzle #3 is from listener Jean-Yves. Here's a corroborating link.

Puzzle #4 is from Kyle Hendrickson's 1998 book Mental Fitness Puzzles.

Puzzle #5 is from listener Alex Baumans.

Puzzle #6 is adapted from W.S. Anglin's 1994 book Mathematics: A Concise History and Philosophy.

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