Brain Games Sudoku Extremely Hard

The Most Popular Puzzle Games For All Time
Sudoku puzzles are a proven method for enhancing logic skills. As a logic puzzle, Sudoku is also a great brain game. If you play Sudoku every day, you'll soon begin to see improvements within your concentration and overall brain power. You could reduce your probabilities of Dementia or Alzheimer's simply by solving Sudoku puzzles.
By using this selection of sudoku puzzle books you would experience enhanced brain capabilities for example focus, logical thinking, and memory.
All of the sudoku puzzles inside the book are classic 9x9 grid sizes. Sudoku rules are very easy, each number 1,2,3,4,5,6.7,8 and 9 must appear only once in each row, column, and region. Complete this puzzle so that every row across, every column down
and every region contains the numbers 1 to 9. Each row and each column have only one and exactly one of each of the numbers 1,2,3,4,5,6,7,8,9
Features:
This book contains 300 classic Sudoku puzzle books extremely hardSudoku puzzles grid size in the book is 9x9 that is played with nine number 1,2,3,4,5,6,7,8,9Sudoku grids are large, very easy to read and fill out.4 Puzzles Per PageAll puzzles come complete with solutions towards the back of the bookPuzzles are printed on high-quality white paper, size 8,5 x 11 inchesSimple instructions for beginnersChoose your book today by clicking on the BUY NOW button at the top of this page.