The Official Book of Circular Sudoku: Book I: 120 Puzzles

by Peter M. Higgins

"A thrilling new puzzle certain to delight fans of Square Sudoku." Michael Mepham, bestselling author of The Book of Sudoku and the Sudoku to Go series Step up and test your wits with this fiendish... This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 0452287960
• ISBN13: 9780452287969
• Release Date: July 2006
• Publisher: Plume Books
• Length: 212 Pages
• Weight: 0.35 lbs.
• Dimensions: 0.4" x 5.6" x 8.5"
• Age Range: 18 years and up
• Grade Range: Grade 12 and higher

Customer Reviews

Th circular Susoku is a modification of the basic Sudoku that is roughly of the same difficulty as t

The basic circular Sudoku puzzle has four concentric circular rings with the circles partitioned into 8 segments. Each of the numbers 1-8 must appear once and only once in each of the four rings and in each of the eight pairs of overlapping quarter circles. Numbers are already placed in some of the sectors, where the purpose is to guarantee a unique solution. The solution strategy for the circular Sudoku is similar to what is used in the rectangular Sudoku. The expanded circular Sudoku has five concentric rings and 10 overlapping sectors with zero added as the additional digit. This book is a collection of 120 circular Sudoku problems of varying degrees of difficulty. It will keep you busy for hours as you rise to the challenge in solving these problems. Published in Journal of Recreational Mathematics, reprinted with permission

good deal

The product arrived promptly and as advertised. It was fun to have such a nice selection of books! Thanks.