Codebreakers Puzzle Book

Arcturus Publishing Ltd

The Alan Turing Codebreaker's Puzzle Book        

Sirius

Alan Turing's Cryptic Codebreaker's Puzzle Book (Sirius Classic Puzzles)

Independently published

Codebreakers Challenge Word Search Puzzle Book: Easy to Read Print about Hacking, Cybersecurity, Ethical Hacking, Cyber Defense, Encryption, Computer ... | 50+ Puzzles for Vacations and Relaxation

Arcturus Publishing Ltd

The Alan Turing Codebreaker's Puzzle Book (Arcturus Themed Puzzles)

Sirius Entertainment

The Alan Turing Codebreaker's Puzzle Book        

Independently published

Extra Large Print Codeword Puzzle Book for Adults: 84 Codeword Puzzles

Independently published

Thanksgiving Cryptograms Word Puzzles: Large Print Word Search Activity Book With Solutions,Thanksgiving For Codebreakers Practice

How2become Ltd

Spy Pocket Puzzle Book: 100s of perplexing puzzles for starters, astute codebreakers and Britain's best minds (The Puzzle Series)

Z Kids

The Codebreakers Club: 150+ Logic Puzzles to Solve the Mystery of the Missing Puzzle Professor

Codebreakers: Into the Unknown (English Edition)