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# What Is the Name of This Book?

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If you're intrigued by puzzles and paradoxes, these 200 mind-bending logic puzzles, riddles, and diversions will thrill you with challenges to your powers of reason and common sense. Raymond M. Smullyan — a celebrated mathematician, logician, magician, and author — presents a logical labyrinth of more than 200 increasingly complex problems. The puzzles delve into Gödel’s u
...more

Paperback, 256 pages

Published
October 15th 1986
by Touchstone Books
(first published 1978)

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This book contains Smullyan's famous logic puzzles about knights (who always say the truth) and knaves (who always lie) and all interesting combinations thereof. Apart from providing intellectual fixes for maths junkies, this book actually teaches logic through ...more

Beginning and ending sections include jokes about logic and logicians that teach a huge amount about logic itself. A section in the back teaches about Godel's Theorem in a simple way anyone can understand (perhaps more elegantly than Hoftadter did, perhaps not). He gives a feeling for what logic is and why we understand it the way we do.

But back ...more

There is some excellent material in here, some familiar, others still with a novel edge today. There are some basic challenges - for example we're looking at a picture and told 'Brothers and ...more

Nov 13, 2012
Dimitris Hall
rated it
liked it
·
review of another edition

Shelves:
unique-little-discoveries,
funny

*In this popular puzzle, a man has committed a crime punishable by death. He is to make a statement. If the statement is true, he is to be drowned; if the statement is false, he is to be hanged. What statement should he make to confound his executioner?*

I got this book after reading The Tao Is Silent and deciding that Mr. Raymond Smullyan must be one of my favourite people out there. A logician, a magician, a pianist, a Taoist

*and*a mathematician? (it rhymes!)

*What Is The Name Of This Book?*(li ...more

A couple of things I noticed which would really help:

1. Try to take it up with a clear mind. ...more

The final Part was generally very different in tone from the rest, and the description of Gödel's actual work could have done with more unpacking, I feel. So if you're after intuitive understanding of those theorems, I could not recommend this as a sole source.

Also worth noting: the book certainly shows its age with the exoticism and implied casual sexism. ...more

Lots of good puzzles, but a bit repetitive. I don't need 20 knights & knaves problems.
...more

Okay - for that last part he failed since I still don't understand it. A ...more

I only give it four due to the fact that it's a great tool, but it doesn't excite me or lead me to an exciting world. It's a refreshing and grounding activit ...more

But, seriously: If you like logic puzzles, you'll like this book for sure. Smullyan is a very funny author and all his works are permeated by his lighthearted spirit and creativity. ...more

Jun 15, 2009
DJ
marked it as to-read

recommended by Scott Aaronson when I asked if there had been any investigation into why truth is such a mathematically strange concept.

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