Do you like to use your spare moments indulging in puzzles? This collection is a real treat for anyone who loves Sudoku. Are you ready to rise to the ultimate brain-training challenge?Packed into a paperback sized book, Sudoku - 400 Classic Puzzles - 4 Levels - Easy to Expert is sized to carry with you for when you have breaks or unexpected time to fill and is your perfect take-anywhere companion. Working through the puzzles in this book can provide a vigorous mental workout for virtually everyone from teenagers to senior citizens and lets you work puzzles from easy to expert.Activate your brain cells and grab a pencil -Sudoku - 400 Classic Puzzles - 4 Levels - Easy to Expertbrought to you by TAT Puzzles, is here to provide you hours of challenging entertainment, one page at a time!