Quad (Hyper) Sudoku

joe-ks.com

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Looking for another SuDoku challenge? These 234 Quad (also known as 'Hyper') puzzles provide an extra source of puzzle-meant, in 5 difficulty levels - from Easy to Fiendish.

Quad puzzles follow the same rules as for regular SuDoku puzzles PLUS there are 4 (Quad!) extra shaded regions where each region also contains the numbers 1 to 9 once only. Each Quad puzzle is joined to a previous and following puzzle through common puzzle solution numbers.

As well, this book is an extension of "The World's Longest SuDoku Puzzle". Includes strategy guide for solving SuDoku puzzles, and tips on how to find Quad numbers. And for those who still can't get enough, try solving the 234 riddles!

Joe Defries is a current 2-time Guinness TM World Record Holder, and is the joe in suJoku.com & joe-ks.com (the Largest Source of Internet Humour).

Format: Paperback
Size: 8.5 x 5.5 x 0.6 inches
Pages: 278
ISBN: 0-595-48399-2
Published: Jan-2008