A new collection of previously unpublished Fiendish Su Doku puzzles Perfect for the advanced solver in need of a constant supply of ultra-difficult challenges, the puzzles in this collection are of the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 collection of Fiendishly difficult puzzles--it's simply a question of logic.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.