Ready to become a Sudoku master? Then 400+ Sudoku Puzzles - Volume 1 is for you Whatever your level, you'll love this huge Sudoku puzzle book. The 400 puzzles increase in difficulty from warm-ups to total mind-bogglers-perfect for players who want to gradually improve their skills and for masters who want a range of challenges to stay sharp. 400+ Sudoku Puzzles makes an excellent gift and is perfect for Sudoku players of all levels. You can even buy several copies and compete with your friends to see who can solve more puzzles. 400 unique sudoku puzzles 4 difficulty Levels - easy, medium, hard, very hard Includes answers for every puzzle (but no cheating ) Hours of entertainment Perfect gift for that special someone Are you good enough to finish every Sudoku puzzle? Buy Now to Find Out