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Average Customer Review:
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 Very Challenging - going for 2nd time! Feb 29, 2008
Very Challenging - I loved this book so much, I ordered a second one when I was done with the first - I figured they were challenging enough to do it a 2nd time! I also ordered the second one in this series by Tom Sheldon.
 Disappointing Jan 17, 2008
I get a bit tired of people claiming how fantastically hard their puzzles are, only to be disappointed in the end. In the end with this book I was very disappointed. The author claims 9 Circles of Sudoku Hell, but the highest level, "The Ninth Circle" contains only one puzzle and it can be solved in under an hour, pretty much ditto for all the rest.
I thought the master class in advanced strategies disappointing, simply a rehash of strategies known around the world.
What I really came away with from this book is the knowledge that my Sudoku solving process is superior to the author's lore, and that maybe I should write a book on Sudoku solving and get the author's permission to use puzzles from this book as examples.
The Best of the Best Dec 26, 2007
This is by far the best book of Sudoku puzzles I've ever done. They averaged about 50 minutes each to solve. I was hoping to find more like this one. He doesn't waste your time with simple no brainers.
More, please!
0 of 3 found the following review helpful:
Its tips are not terrific Nov 06, 2007
I bought this book for the "master class in advanced strategies," not for the puzzles, and I was disappointed. The tips are skimpy and not very clearly explained. I have a Ph.D. in philosophy (which includes logic), so I am no dummy, yet several of the solving tips in the opening section I had to read three or four times until I could correctly correlate the commentary to the diagrams. If you're looking for difficult puzzles, then read the other reviews, but if you're looking for solving methods for difficult puzzles, don't buy this book.
1 of 1 found the following review helpful:
Has Blank Grids In The Back Oct 20, 2007
This has been my favorite Sudoku book. The puzzles are harder than the "Very Challenging" puzzles in the Will Shortz books. One of my favorite features of this book is the section of blank grids towards the end of the book. They're perfect for when you make a mistake in a puzzle and want to try again.
The author says that several of the puzzles require "Trailing" (aka Trial and Error). However, I found that most (but not all) of those could be solved with advanced logic techniques. If you want to learn those techniques, though, you'll have to look beyond this book. The best teacher for that is the free Sudoku Susser PDF.
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