From tangrams to cryptograms, exercise your mind with clever puzzles and brainteasers. What new puzzles would you like to try?

What's the world's hardest puzzle?

Many puzzles can stump even the smartest players. But which head-scratcher is the hardest in the world?

How Escape Rooms Work

Bring your closest friends and team up with total strangers to solve your way out of a room full of puzzles.

How to Solve a Rubik's Cube

Have you ever spent hours (days, weeks) staring at a Rubik's Cube, only to twist and turn its colored squares hopelessly? With a bit of deciphering, you can solve that cursed cube.

How Towers of Hanoi Works

Despite its simple setup -- a few posts and several discs that form a pyramid -- the game known as Towers of Hanoi can be hard to solve without the right solution.

How 8 Queens Works

While 8 Queens is popular with the programming set, the less math-savvy among us can also squeeze some fun out of this classic puzzle.

5 Addicting Puzzle Games

There are some games that you play and forget about, while others suck you in and keep you coming back for more. We take a look at 5 highly addicting puzzle games.

Solving a Futoshiki Puzzle

All it takes to solve a futoshiki puzzle is a little logic. Find out how to solve a futoshiki puzzle with this quick tutorial.

How 3-D Puzzles Work

As fun as they are, most traditional puzzles can fall a little flat. However, 3-D puzzles – made from plastic, wood, fabric and more -- have been boggling minds for centuries. What separates 3-D puzzles from their two-dimensional brethren?

How Acrostic Puzzles Work

Word games can be fun (and frustrating) forms of entertainment, but if you're tired of the same old crosswords, why not try your hand at their puzzle cousins, acrostics?

How Chess Puzzles Work

If you love the challenge of chess and can't get enough of the game, you can try out special chess puzzles to improve your skills.

How Cryptograms Work

First used for confidential messages during times of war, cryptograms have now evolved into leisure-time puzzles. What are some of the keys to breaking the codes?