Challenging puzzle for experienced crossword solvers
Classic Codes and Secret Keys
Perfect for beginners with simple, common vocabulary
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Across
- 1. Code made with dots and dashes
- 3. To move letters forward or backward
- 4. To solve or decode a secret message
- 5. To mix up letters or words
- 8. To keep something secret or out of sight
- 11. Often used as keys in ciphers
- 13. A special kind of number used in some codes
- 14. Keeps messages safe from others
Down
- 2. What a message is made of
- 6. A symbol used to represent something else
- 7. A secret system for writing
- 9. Used to unlock or decode a message
- 10. An ancient letter system used in ciphers
- 12. The first letter in Greek alphabet often used in ciphers
- 15. A number used in the famous two-letter cipher
- 16. A secret way of writing messages
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