Medium Difficulty Sudoku Book Gift for Sudoku Lovers This sudoku puzzle book has been designed for fun for all ages and can be played by children, adults and seniors who have an intermediate level of understanding and sudoku solving ability. Perfect for stimulating the mind and improving reasoning skills, this book contains 200 medium level sudoku puzzles with answers for each of the puzzles. A 'Beginners Help' section is also included to provide valuable tips for solving the puzzles. This definitely makes a great gift for sudoku lovers.