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My Sudoku Puzzle Book Features100 easy Sudoku Puzzles With AnswersClear 9x9 GridsClear text Fonts6"x9" dimensionsPerfect Gift For Adults and kidsBenefits Of Playing Sudoku PuzzlesImproves your memory. Memory and logic work side-by-side when you are playing Sudoku. ...Stimulates your mind.It reduces the chances of developing Alzheimers by keeping your brain active.Helps you Learn to do things quickly. Increases your concentration power.Makes You Feel Happy.