My Best Mathematical and Logic Puzzles

The Ultimate Mathematical Challenge: Over 365 Puzzles to Test Your Wits and...

How to Cut a Cake: And other mathematical conundrums

Hexaflexagons and Other Mathematical Diversions: The First Scientific...

Are You Smart Enough to Work at Google?: Fiendish Puzzles And Impossible...

Why Cats Land on Their Feet - And 76 Other Physical Paradoxes and Puzzles

The Godelian Puzzle Book: Puzzles, Paradoxes and Proofs

Global Marketing and Advertising: Understanding Cultural Paradoxes