The game of Sudoku doesn't need an introduction; there's at least one of these wordless puzzles in every newspaper or magazine. But author Alan Ross has provided a unique format in his new book, Automated Sudoku. Designed and tested by a computer program created by Ross, this edition boasts nearly 500 puzzles, of which 400 are evaluated as difficult. In each game, Ross has included all possible answers for each square so the puzzle solutions are based on logic and not trial and error. Geared toward every age, all of the puzzles can be solved using the meaningful and easy-to-understand directions. Automated Sudoku also includes step-by-step answers to help you become a real expert. Once you have mastered the art of Sudoku, you will find solving these to be a pleasure. These intellectually stimulating puzzles use your brain power and give you a sense of achievement without the guesswork.