Many different types of puzzles fall under the heading of brain teasers, from short riddles to complex logic puzzles, from mathematical games to puzzles dealing with probability.

**Logic Puzzles**

Solving logic puzzles requires a rigorous approach. Your intuition will probably lead you astray, but careful mental steps will lead you to the answer.

**Probability Puzzles**

Probability is subject to strict mathematical measurement, but our everyday reasoning often leads us in the wrong direction.

**Math Puzzles**

Math puzzles may seem like they should be easy to figure out, but these require some careful thinking.

**Cryptography**

Problems involving codes and secret messages.

**Game Theory**

**More Brain Teasers**

Here are some more brain teasers that I didn’t put into any of the categories above.