Calcudoku Puzzle Book: 500 Easy to Hard (6x6) Puzzles (Paperback) (ISBN-13: 9789922636221)

Calcudoku (also known as "KenKen", "KenDoku", "Mathdoku", "Square Wisdom") is a logic puzzle with simple rules and challenging solutions. It is similar to Sudoku and Killer Sudoku except you're dealing with +, -, x and .

This Logic Puzzles book is packed with the following features:

- 500 Calcudoku (6x6) Puzzles from Easy to Hard.

- Answers to every puzzle are provided.

- Each puzzle is guaranteed to have only one solution.

• Includes free bonus puzzles you can download book (Tons of Sudoku Puzzles for Adults & Seniors)
• Includes free bonus puzzles you can download book (Word Search With Hidden Message: 102 Puzzles for Adults and Seniors)