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
Unsolvable Puzzles
The solution is to figure out how you know that there is no solution.
More Brain Teasers
Here are some more brain teasers that I didn’t put into any of the categories above.