How To Solve Cryptogram Puzzles
Use logic and your knowledge of the letters and words to crack the cipher and work out the message by figuring out which letter represents which.
Look for common letters: See what letters appear most often in the puzzle and compare them to the list of most common letters in the language. For example, the most common letters in English are E, T, A, O, N, I, and S.
Solve the short words: Look for the short words containing one to three letters. Use your language knowledge to compare these to the most common one, two and three-letter words. The most common one-letter words are A, and I. English's most common two-letter words are OF, TO, IN, IS, AS, HE, BE, BY, ON, OR, and AT. English's most common three-letter words are AND, THE, FOR, HIS, NOT, BUT, YOU, ARE, HER, and HAD.
Spot repeated letters: Look for pairs of repeated letters. Only a few letters in the language are repeated. These are usually DD, EE, FF, GG, LL, MM, NN, OO, PP, RR, SS, TT, and ZZ.
Look for Digraphs: Look for two-letter combinations most common in the language. The most common digraphs in English are TH, HE, AN, IN, ER, RE, ES, ON, EA, and TI.
Look for patterns: Solving cryptograms often means taking educated guesses and looking for patterns in the letters and words. Look for repeating words such as in the example above from Julius Caesar.