This book contains 100 sudoku samurai puzzle in Hard difficulty. Samurai sudoku puzzles contain five overlapping sudoku grids. The regular sudoku rules apply to every 9 x 9 grid. Put numbers from 1 to 9 in every empty cell. Each row, each column, and each 3 x 3 box should consist of one of each digit. The puzzles on Samurai Sudoku have one unique solution that you can get using logic, absolutely no guessing needed. 100 Samurai Sudoku Puzzle Books in Hard level An answer key for each sudoku puzzle Puzzles are printed on high-quality white paper, size 8,5 x 11 inches Every single puzzle is spread out on one full page, solving could be easy on your eyes 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. Choose your book today by clicking on the BUY NOW button at the top of this page.