Killer Sudoku X - 200 Hard Puzzles 9x9 (Volume 4)

By Dart Veider

In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a region. This variant also called "Sums Sudoku", "Sums Number Place", "Samunamupure", "Kikagaku Nampure".
Killer Sudoku is a puzzle that combines elements of Sudoku and Kakuro.

Despite the name, the simpler killer sudokus can be easier to solve than regular sudokus, depending on the solver's skill at mental arithmetic, the hardest ones, however, can take hours to crack.

In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a region. Regular 9x9 Killer Sudoku that row and column rules apply, main diagonals also contain the digits 1 through 9.

The puzzle book contain:
- 200 Puzzles
- Handy 6 x 9 inch Book Layout
- 2 Puzzles per Page
- Ideal for Experts

In the book you will find a description and examples of solutions for all puzzles.
The book is for those who like logic and math problems. Decide, developing and improving.

• Format: Paperback
• Language: English
• ISBN: 1986631451
• ISBN13: 9781986631457
• Release Date: March 2018
• Publisher: Createspace Independent Publishing Platform
• Length: 138 Pages
• Weight: 0.43 lbs.
• Dimensions: 0.3" x 6.0" x 9.0"