Jumbo Sudoku Challenge
by Michael Mepham
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Book Summary Information
Author: Michael MephamEdition: Paperback
Audio: English (Unknown); English (Original Language); English (Published)
Published: 2006-10-17
ISBN: 1933821019
Number of pages: 306
Publisher: Time Home Entertainment
Book Reviews of Jumbo Sudoku Challenge
Book Review: What a treat! Challenging sudoku in a variety of new formats!
Summary: 5 Stars
What makes this sudoku collection really special is its fascinating variety! Omitting the Easy and Medium sudoku, the collection begins with regular "Hard" puzzles (88 of them, not too hard), and then moves to Fiendish, seventy-seven of them. (Tom Sheldon's Master Class has more difficult "fiendish" puzzles, but the ones here are fun, too.)
Then I discovered variations that I'd never tried, each of which provided hours of new fun! Samurai Sudoku was my first variation--five connected sudoku with a center puzzle sharing its corners with four additional, interdependent puzzles. (See cover photo for example.) It is necessary to use patterns in the additional puzzles to fill in the center puzzle and, most importantly, its shared corners, so that the other puzzles can all be completed. Fortunately, author Michael Mepham rates these from Easy to Fiendish, as I found these puzzles initially to be quite challenging.
The Jigsaw Samurai Sudoku have become my favorites. Similar to regular samurai sudoku, the center puzzle has square corners, requiring 9 numbers, but except for these corner squares in the center puzzle, there are no other squares. Where the squares would be are irregular shapes, some of them in crosses (using one column and one row), some looking like stair steps through the puzzle, and some looking like the NYC skyline. The challenge is to give each irregular shape each of the numbers from 1-9, while, at the same time, putting 1-9 into each vertical column and each horizontal row. These range from "easy" to "fiendish."
Twelve by twelve and sixteen by sixteen square puzzles, which require numbers from 1-9, in addition to letters--A-C for the 12x12, and A-G for the 16x16 are all ranked "hard." The last variation, "Killer" sudoku, shows irregularly shaped "cages" within the regularly-shaped squares, each cage containing the mathematical totals for 2, 3, 4, or 5 numbers within the boxes they enclose. Only a few numbers are shown in the boxes(usually two or three, on average) and one "fiendish" killer puzzle, offers no given numbers at all, only the totals in the cages. Varying from "easy" to "fiendish," these require simple math.
My minor problem with the book is its binding--a spiral binding would help right-handers do the puzzles on the left side, especially at the beginning of the book. (I ended up Xeroxing some of these left side puzzles because it was hard to write along the tight binding.) The pages are 8" x 10 1/2", however, and offer large boxes and plenty of room to write. The paper quality is very high, allowing for numerous erasures. A great collection offering weeks of fun and many new puzzle experiences! n Mary Whipple
Summary of Jumbo Sudoku Challenge
Following on the heels of Jumbo Sudoku Easy, Jumbo Sudoku Challenge includes 400 all-new puzzles to test sudoku enthusiasts. This collection contains some of the most difficult puzzles available and is sure to entice die-hard sudoku solvers.Jumbo Sudoku Challenge also includes Killer Sudoku ? a different way to get your Sudoku fix - along with the regular puzzles ranging in levels from difficult to the absolute fiendish. Every puzzle is an oversized grid so you have extra room to help you solve. Plus as a bonus, Jumbo Sudoku Challenge will feature a special pull-out Shogun puzzle ? it is the ultimate Sudoku test!
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