by Alena Gurin (Author)
Discover 400 Very Hard Killer Sudoku puzzles in a 9×9 format, combining classic Sudoku rules with arithmetic logic at an advanced level of difficulty.
Designed for experienced Sudoku fans who enjoy demanding number puzzles and want a serious Killer Sudoku challenge, this extensive collection offers plenty of complex problems for focused and rewarding solving.
Killer Sudoku follows the familiar rules of classic 9×9 Sudoku: place the numbers 1 through 9 so that each number appears exactly once in every row, column, and 3×3 box.
What makes Killer Sudoku different?
The grid is divided into outlined groups of cells called cages. Each cage has a target sum, and the numbers placed inside must add up to that total. No number may repeat within the same cage.
Inside this book:
- 400 Very Hard Killer Sudoku puzzles
- Classic 9×9 grids with cages and target sums
- One unique solution for every puzzle
- Two puzzles per page
- Comfortable, easy-to-read print
- Solutions included at the end of the book
Solve at your own pace and enjoy challenging puzzle sessions at home, during breaks, or while traveling.
A thoughtful gift for adults who enjoy Sudoku, number puzzles, arithmetic logic, and advanced problem-solving challenges.
Number of Pages: 240
Dimensions: 0.51 x 9.02 x 5.98 IN
Publication Date: April 29, 2021
