Test your mental agility with this challenging sudoku puzzle book.
 
Sudoku 9 x 9 puzzle book will sharpen your mind and keep your brain active. A puzzle a day keeps the brain awake.
 
You don't need to be a math whiz to enjoy a great 9x9 sudoku puzzle. This makes it a perfect choice for a sudoku beginner for both adults and kids. Sharpen your mind, have some fun and become a 9x9 sudoku master. Even adults can use them to learn how to play Sudoku puzzles before graduating to the 9x9 grids!
 
Basic rules of 9x9 Sudoku
The basic rules of 9x9 Sudoku are to fill a 9x9 grid with the numbers 1–9 without repeating any numbers in a row, column, or 3x3 block. 
Rules:
Each row must contain the numbers 1–9 without repeating any numbers 
Each column must contain the numbers 1–9 without repeating any numbers 
Each 3x3 block must contain the numbers 1–9 without repeating any numbers 
 
Tips:
Start by filling in the given numbers 
Use a pencil so you can erase mistakes 
Scan rows and columns within each 3x3 block to eliminate numbers or find squares that only have one possible number 
 
Difficulty: 
Easier puzzles have more numbers already filled in
More difficult puzzles have fewer numbers already filled in
 
Key Highlights:
A perfect way to spend your leisurely hours
The puzzle consists of a 9 x 9 grid made up of 3 x 3 subgrids. The goal is to fill the empty fields with one number each so that each column, row, and subgrid contains the numbers 1 to 9 exactly once.
Designed to challenge and engage minds
No guessing is allowed! Sudoku is a game of logic
Ideal for taking on holiday, on long journeys, or for completing at home, this power puzzle book is great for children and adults
Each puzzle is complete with a printed solution
Ideal for 8+ years
Value for money