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Solving Puzzle Caches: Ciphers
Good overview, examples, and links for resources and help (including code breakers). Examples include Caesar Cipher, Monoalphabetic, Keyword, PigPen...
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Picture from Cipher link above
Geocache Puzzle Solving 101 This link gets you to the Blog story and Geocache Links to a Geocache series with 10 steps - going through the various types of puzzles - strategy, tactics, trivia, wordplay, mathematics, logic, cryptography, steganography and lateral thinking.
The caches are in Florida - but there is a Virtual TB link to take the test and get a certificate! Cool!