Puzzles are more than security measures, they're ways to bring friends and family together and challenge your logic and spatial relationship skills. The 2 Million Dollar Puzzle gives you all the fun ...

Thousands worldwide, from San Francisco to Slovenia, are counting down to Christmas with a puzzle-a-day programming challenge called Advent of Code. By midnight on December 1, 2015, when Eric Wastl ...

The Kummetz Cipher Code is a required puzzle that's part of the A Harsh Climb adventure in the Himalayas. It will be presented to you when you are nearing the end of ...