Mind-Melting Sudoku Books for Adults

Warning: the Sudoku puzzles in this book will stress you out but in a good way. Wait, what? Yes, there is such a thing as good stress. It is make-believe stress that will slowly transition to a noticeable feeling of happiness and self-confidence. Sudoku is a numbers game so you're not solving real-life problems. Weave in and out of the Sudoku madness on your own. Try solving today.