Donut Sudoku: The Delectable New Variant
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Stock No: WW799090
Puzzlewright / 2013 / Spiral Bound
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Donut Sudoku: The Delectable New Variant

Puzzlewright / 2013 / Spiral Bound

In Stock
Stock No: WW799090


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Product Description

Donut Sudoku is challenging-yet there's the oh-so-sweet the thrill of solving this Sudoku variant! No numbers appear within the central box to start, leaving a "donut hole" in the middle with the numbers that are given sprinkled around the edges. Perfect for your coffee-break! 189 pages, softcover with spiral-bound binding. Answer key included.

Product Information

Format: Spiral Bound
Number of Pages: 160
Vendor: Puzzlewright
Publication Date: 2013
Dimensions: 9.00 X 6.00 (inches)
ISBN: 1402799098
ISBN-13: 9781402799099

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Publisher's Description

How sweet it is! Solvers will gobble up this delectable new sudoku variant with a tasty twist. No numbers appear within the central box to start, leaving a "donut hole" in the middle with the numbers that are given sprinkled around the edges. That makes breaking into the central area more challenging—and provides sudoku lovers with a unique solving experience.

Author Bio

Dr. Frank Rubin is a retired IBM® computer programmer who has done extensive work in the field of design automation, using computers to design the next generation of larger and faster computers. Dr. Rubin is also a cryptographer who holds major patents in the field of keyless cryptography. Beyond his professional activities, he has constructed thousands of mathematical puzzles, as well as cryptograms, alphametics, SumSum, Double Sudoku, and papers on knight and bishop coverings in chess. This is his first book for Puzzlewright Press.

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