Playing Sudoku has several beneficial effects for the • Improves memory function • Improves logic and reasoning function • Enhances swift decision making • Reduces hesitation of action • Improves focus and concentration • Increases happiness through achievement and sense of accomplishment • Aids relaxation • Provides a form of escape • Reduces stress and anxiety • Improves problem solving skills • Improves strategy and planning skills With all these benefits in mind, challenge yourself by working your way through the very difficult Sudoku puzzles within this book.