A new collection of previously unpublished Fiendish Su Doku puzzles Perfect for the advanced solver in need of a constant supply of ultra-difficult challenges, the puzzles in this collection are of the highest quality, guaranteed to provide hours of absorbing, brain-stretching entertainment. Each puzzle has a unique solution--and there's no guesswork required. You don't need to be a mathematical genius to solve the treacherous puzzles in this eighth...
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