25 Books to Read Before You Die
 
 

Recently Viewed clear list


The Powell's Playlist | August 6, 2014

Graham Joyce: IMG The Powell’s Playlist: Graham Joyce



The Ghost in the Electric Blue Suit is set on the English coast in the hot summer of 1976, so the music in this playlist is pretty much all from the... Continue »
  1. $17.47 Sale Hardcover add to wish list

spacer
Qualifying orders ship free.
$7.95
New Spiral/comb
Ships in 1 to 3 days
Add to Wishlist
Qty Store Section
3 Burnside Games- Puzzles

More copies of this ISBN

Donut Sudoku: The Delectable New Variant

by

Donut Sudoku: The Delectable New Variant Cover

 

Synopses & Reviews

Synopsis:

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.

About the Author

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.

Product Details

ISBN:
9781402799099
Author:
Rubin, Frank
Publisher:
Puzzlewright
Edition Description:
Wire Coil/Wire Comb
Publication Date:
20130431
Binding:
Spiral, comb or coil bound book
Language:
English
Pages:
160
Dimensions:
9 x 6 in

Related Subjects

Hobbies, Crafts, and Leisure » Games » Crossword Puzzles » Spinner Rack
Hobbies, Crafts, and Leisure » Games » General Puzzles
Hobbies, Crafts, and Leisure » Games » Sudoku

Donut Sudoku: The Delectable New Variant New Spiral/Comb
0 stars - 0 reviews
$7.95 In Stock
Product details 160 pages Puzzlewright - English 9781402799099 Reviews:
"Synopsis" by ,
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.
spacer
spacer
  • back to top
Follow us on...




Powell's City of Books is an independent bookstore in Portland, Oregon, that fills a whole city block with more than a million new, used, and out of print books. Shop those shelves — plus literally millions more books, DVDs, and gifts — here at Powells.com.