The Big Book of Su Doku #3 Extreme

I have gotten other so called hard Sudoku books and found them too easy. This one will keep you going for a long time. It has lots of different types of puzzles with the ultimate being the 16x16 grid. I would give 4 1/2 stars because I wish it were on better paper. I make copies of the hardest puzzles on better paper that can take LOTS of erasing!

Wonderful. No fluff in this book. It begins with some tricky ones that actually require several minutes to finish and gets downright hard after that. Some take hours, and often I just quit one puzzle and come back to it another day. The various shapes/styles are a great break from the 9x9 norm. The 6x6 puzzles are absolutely vicious. Nothing like kids 6x6 sudokus that take an advanced puzzler seconds to complete. And I love the jigsaw shapes. Watch out for the 9x9 jigsaws! There should be more advanced sudoku books like this. As recommended by others, this should not be your first foray into sudoku. But once you are hooked on the light stuff, this is a nice challenge.

First of all, I would definitely say that if you are just beginning to learn how to solve Sudoku puzzles, I strongly suggest that you do not buy this book. Instead, I would suggest a book which focuses almost entirely on the standard 9x9 Sudoku puzzles, and which starts with easy puzzles before progressing to more difficult ones. The Big Book of SuDoku 3 starts right out with difficult puzzles, and the puzzles only continue to get harder and harder as you continue. If you are an experienced SuDoku solver who is able to solve all but the hardest 9x9 SuDoku puzzles without too much difficulty, or if you have grown a bit tired with the standard 9x9 SuDoku puzzle, this is a great book. For me, the most appealing feature of this book is that half of the 200 puzzles in this book are different from the familiar 9x9 Sudoku. While the Maxi (12x12) and Super (16x16) puzzles are just larger versions of the 9x9 puzzles, the Jigsaw, Duplex, and Triplex puzzles actually require the solver to use different solving techniques than are used for the regular puzzles. Overall, I give this book 5 stars as long as you're up for the challenge. While this book may not contain quite the volume of puzzles as some others, the harder puzzles can take well upwards of an hour to complete, so this book will keep you occupied for a long time.

I started doing these puzzles over a year ago and I became hooked. This book is for people who have been doing them a long time, or who know they will become addicted. If you are a true beginner I would suggest the second book in this series (has a bit easier puzzles to start with up to the mega challenging. You can spend hours on some of the hardest ones, but if you are a true puzzler, that is what you want.

"EXTREME" is no joke.... these puzzles range from pretty tough to cursing-the-day-you-ever-started-doing-these-darn-things tough. Sudoku purists may not enjoy the puzzles that don't fit into the traditional 9x9 grid, but any sudoku-er who considers themselves unstumpable will thoroughly enjoy these puzzles. This book makes a great gift for your favorite sudoku fiend!