100 Double CalcuDokus

By Giulio Zambon

You are probably familiar with Sudoku puzzles. CalcuDoku puzzles (which are also known under the names KenKen®, KenDoku®, both registered trademarks of Nextoy LLC, MathDoku, and several others) are, like Sudokus, squares that you have to fill with digits.

Like with Sudokus, the digits must be unique within each row and each column, but in CalcuDokus, “cages” of different shapes and sizes replace the nine 3x3 boxes of the Sudokus. Each cage contains one of the four basic operation codes (“x”, “+”, “-”, and “:”) and a target number. In a CalcuDoku, the digits within each cage, when you apply to them the cage operation, must result in the cage target.

Double Calcudokus consist of two overlapping CalcuDokus, so that they share several cells. The unicity of digits within rows and columns apply to the two CalcuDokus separately, but the cages can cross the boundaries between them. As a result, the boundary-crossing cages include some cells that belong to both CalcuDokus and some that only belong to one of them.

In this book of Double CalcuDokus, the two CalcuDokus share an area of 7x7 cells. This means that only the two outermost cells around the puzzle belong to a single CalcuDoku.

If you like difficult Sudokus, you will love Double CalcuDokus. If you want to have fun and train your brain at the same time, CalcuDoku is for you.

• Language: English
• Publisher: Giulio Zambon
• Release date: Dec 7, 2011
• ISBN: 9781466118911

Giulio Zambon

Giulio holds a doctorate in Physics from the University of Rome (Italy), where he graduated cum laude. After a period of teaching Electrotechnics in a high school and a fifteen-month stint in the technical corps of the army, he joined the computer industry. In the ensuing thirty years, he worked as a software developer, system consultant, process improvement manager, project manager, and chief operating officer. During his career in computing, Giulio wrote hundreds of technical reports and presented several courses and seminars. He published several computing books and manuals and some Science Fiction stories. The list of his published work is at his website zambon.com.au. In October 2011, he released CalcuDoku 1.0, an application to play CalcuDoku on the iPad. You can find it in Apple's iTunes application store.

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100 Double CalcuDokus

By Giulio Zambon

Copyright 2011 Giulio Zambon

Smashwords Edition

This book is available in print at lulu.com.

Smashwords Edition, License Notes

This eBook is licensed for your personal enjoyment only. This ebook may not be re-sold or given away to other people. If you would like to share this book with another person, please purchase an additional copy for each recipient. If you’re reading this book and did not purchase it, or it was not purchased for your use only, then please return to Smashwords.com and purchase your own copy. Thank you for respecting the hard work of this author.

Table of Contents

Double CalcuDoku?

The Puzzles

1-10

11-20

21-30

31-40

41-50

51-60

61-70

71-80

81-90

91-100

About the Author

Double CalcuDoku?

You are probably familiar with Sudoku puzzles. CalcuDoku puzzles (which are also known under the names KenKen®, KenDoku®, both registered trademarks of Nextoy LLC, MathDoku, and several others) are, like Sudokus, squares that you have to fill with digits. Like with Sudokus, the digits must be unique within each row and each column, but in CalcuDokus, cages of different shapes and sizes replace the nine 3x3 boxes of the Sudokus. Each cage contains one of the four basic operation codes (x, +, -, and :) and a target number. In a CalcuDoku, the digits within each cage, when you apply to them the cage operation,