Third-degree Brown Belt Sudoku

For confident players only! With a separate sudoku book forevery level, all puzzle lovers can play this wildly popular,incredibly addictive game! From prolific and popular puzzle andsudoku author ? Frank Longo, it takes a page from karate - anotherJapanese art ? as each title is graded by colour: White Belt foreasy, Green Belt for medium level, Brown Belt for hard and BlackBelt for the super-tough solvers. And because each book has anamazing 300 puzzles, the fun can go on for hours?