pSudoku puzzles are a proven method for enhancing logic skills. As a logic puzzle, Sudoku is also a great brain game.brIf 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. brBy using this selection of sudoku puzzle books you would experience enhanced brain capabilities for example focus, logical thinking and memory. ppThis book contains 1001 puzzles sudoku for adults easy to hard. All of the puzzles inside the book are 9x9 grid. brSudoku rules are 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 downbr and every region contains the numbers 1 to 9.br Each row and each column have only one and exactly one of each of the numbers 1,2,3,4,5,6,7,8,9pulli1001 Sudoku Big Book for adults in very easy, easy, medium, hard, very hard