Browsing Riddles in Hard

A Penny for Your Thoughts

C is for Cookie

Chess Problem

Don’t Flip Out, Square!

Don’t Hold Your Horses: Race ’em!

Fun with Geometry

Fun with Geometry II

General Code

Gonna Make Your Brown Eyes Blue

Great EXPectations

How Can You Guess That?

Is this Seat Taken?

Legal 21, Officer

Mad as a Hatter

Safe Generals

Sum Things are Products of Twisted Minds

Thanksgiving Challenge (NEW: Posted December 18, 2013)

The Mathematician and the Pea

Three Hats and a Strange Probability

Tiling Rectangular Boxes

We Value Your Input (NEW: Posted December 18, 2013)

Year Today, Gone Tomorrow?

You’re Caught–Stop Your Whining

Riddles

  • —Difficulty
  • —Topic

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