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Who is Who?

In this sample logic problem there are three people. One is a Knight, One is a Joker and one is a Spy. The Knight never lies, the Joker never tells the truth, and the Spy can say anything. Can you use logical reasoning to identify the Knight, Joker, and Spy?

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August 2025 Quote Acrostic

The author of this month's Quote Acrostic compares paths to prosperity under different economic systems.

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Grand Challenge July 2025!

This month's Grand Challenge involves a mail plane arriving early. Doggedly trying to solve it will develop mental strength and mental stamina. Get a piece of paper and a pencil and find a quiet place to struggle heroically!

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