Alan Wareham
Test Your Brain Power
A Challenging Book of Brain Teasers- A Challenging Book of Logic Puzzles
- A Mensa book of logic puzzles
- Daily Butterfly Sudoku Puzzle Book
- Daily Killer Sudoku Puzzle Book - 9x9 Medium Level
- Daily Numbrix Puzzle Book - Very Easy to Hard
- Daily Sudoku Puzzle Book - Easy Level
- Daily Sudoku Puzzle Book - Very Easy Level
- El Test Del Desarrollo Mental
- Mensa Brain Teasers