Introduction
5
Icons Used in This Book
We included little pictures in the margins of this book.
They aren’t a secret code but a way of highlighting certain
information.
The Tip icon clues you in on how to solve a puzzle or other-
wise work more efficiently.
The Remember icon highlights the text you may want to refer
to again and again.
The Warning icon shows you potential pitfalls to stay away
from as you work through the puzzles in this book.
Where to Go from Here
You’re free to read this book in any order — flip at random
and see what sort of fun puzzle you land on first! You can
always work backward or forward from there or continue to
jump around.
If you’re the logical sort who simply must start at the begin-
ning, turn the page and discover the world of codes and
cryptograms. If you want to know how to solve the specific
puzzle types in this book, start with Chapter 2. And if you’re
looking for fun and easy letter-substitution cryptograms, go to
Chapter 4 first. Finally, if conspiracy stories draw you in every
time, we suggest you head immediately to Chapter 3.
Cracking Codes & Cryptograms For Dummies
6
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