The Times Su Doku The Times Fiendish Su Doku Book 17: 200 Challenging Su Doku PuzzlesChallenge your brain with these enjoyable puzzles. The latest title in The Times Fiendish Su Doku series previously unpublished quality Su Doku puzzles. Includes 180 Fiendish and 20 Super Fiendish puzzles. You dont need to be a mathematical genius to solve the treacherous puzzles in this collection of Fiendishly difficult puzzles its simply a question of logic. Perfect for the advanced solver in need of a constant supply of ultra difficult puzzles,
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The Times Su Doku The Times Fiendish Su Doku Book 17: 200 Challenging Su Doku Puzzles