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Rating: 
Summary: Good book---too much algebra
Review: This book is a good source of riddles, old and new. Unfortunately, a lot of the riddles are just basic algebra problems... and that's not very fun. But if you skip (or quickly work out) the silly algebra riddles, there are still a lot of other interesting riddles. And also there's a neat way to prove Gauss's summing rule in this book.
Also, I was looking for an errata for this book, but I couldn't find one, so I will just mention here that the answer to number 71 is incorrect. But, if you just remove the last sentence from the answer, then it is right.
Rating: 
Summary: Smullyan is a national treasure.
Review: Another challenging set of puzzles from one of our most inventive minds. The book not only has a range of great puzzles, and introduces 'coercive logic' puzzles, but is fun to read as well.The use of the Scheherazade tale as a backdrop is clever and fun. As usual Smullyan gets us to a deeper understanding of logical theory, while we think we're just playing games!
Rating:
Summary: An Excellent Example of the Mysteries of Logic
Review: In this tale, Raymond Smullyan takes us on a fantastic journey from Ancient Persia, when women befuddled kings for their lives. The book then takes a twist into the modern-day field of coercive logic and Godel's Incompleteness Theorm, all the time throwing enough puzzles at us to have us reeling and groping for an eternally mysterious truth. It has aided me greatly in my quest for logical understanding.
Rating: 
Summary: The best puzzle book I've ever read.
Review: Ray Smullyan presents many different types of puzzles. I've read many puzzle books, and this is my favorite by far.
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Summary: The only logic book you'll ever need
Review: Seeing my frustration at being thoroughly unchallenged in logic in my math class at school, my mom bought me this book. I owe her one. There are coercive logic puzzles, easy but sneaky riddles, and math games. There are liar/truthteller problems to keep you guessing for hours. That said, this is also a great book to read on a plane. It is so complete, you will never need another brainteaser book. That is, until you memorize all the questions.
Rating:
Summary: It's never been so much fun to learn.
Review: This book is a cleaverly crafted web of logic problems with thier corresponding solutions. It begins with simple riddles and math problems then quickly leads you to deeper and more facinating problems. These puzzles are arranged in a wonderful narrative with the problems getting increasing complex. Depending on your level of interest, some of the more complex puzzles can easliy go over your head if you let them. The book is definately a lot of fun for math and logic buffs that enjoy being entertained and challenged.
Rating:
Summary: Better than Sam Loyd!
Review: This is probably the best book on logic puzzles ever written (aside from other Smullyan books, that is). It is witty, challenging, and has problems of all kinds. The first half is framed as a continuation to the Arabian Nights, with ingenious and original puzzles (aside from the occasional oldy snuck in) given an Arabian touch.
However, after those brilliant puzzles comes the greatest part of the book. The second half is a collection of puzzles, paradoxes, and even has a couple of chapters on coercive logic, invented by Raymond Smullyan himself.
I reccomend this book to any logic buff, or indeed to anyone who's ever enjoyed a logic puzzle. And if you don't fall into either category, then you need this book all the more.
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