Looking for more puzzles? Here are some problem solving related resources.

## Collections and Blogs

- Monday Puzzle Blog by Alex Bellos.
- Riddle of the Week from Popular Mechanics.
- Varsity Math Puzzle block of the Wall Street Journal.
- Project Euler. A series of challenging math and computer programming problems.
- MathPuzzle.com
- Tanya Khovanova's Math Blog Puzzles.
- Car Talk Puzzler - sometimes automotive, sometimes more math/logic based.
- Maths is Fun - math and logic puzzles appropriate for math education.
- Problem of the Month on Math Central.
- pzzls - nice site with a good variety of math and logic puzzles, as well as some others.
- The Math Challenge Problem from the University of Norther Colorado.

## Videos

- TED-Ed Riddles on YouTube. Nice animations for classic puzzles.
- Mind Your Decisions. See also the corresponding blog.
- Numberphile. Lots of interesting math, including a number of good puzzles.

## Podcasts

- The Math Factor A math puzzle podcast from a while back.
- The Sunday Puzzle on NPR. Mostly word puzzles, but occasionally an interesting math nugget.

## Books

- Problem Solving by Thomas DeFranco and Charles Vinsonhaler.
- Problem Solving Through Recreational Mathematics by Bonnie Averbach and Orin Chein.
- Books by Martin Gardner - perhaps the greatest contributer to mathematical puzzles ever.
- Mathematical Puzzles: A Connoisseur's Collection by Peter Winkler.
- The Riddle of Scheherazade: And Other Amazing Puzzles by Raymond Smullyan. Very nice collection of puzzles, all tied together in a story. Plus, some logic content as well.
- Sideways Arithmetic From Wayside School by Louis Sachar. A collection of cryptarithmetic puzzles.

## Games

- Mind Trap - a game with hundreds of puzzle cards. Lots of lateral thinking puzzles.
- Professor Layton and the Curious Village - for the Nintendo DS. Loads of puzzles wrapped up in a fun mystery.
- Professor Layton and the Diabolical Box - sequel to the Curious Village. Another great Nintendo DS puzzle game.