Daily CryptogramA free daily cryptogram puzzle paired with a historical almanac.
Editorial

Cryptogram Articles

Welcome to the Daily Cryptogram editorial desk. Our long-form articles explore the rich, secretive history of cryptography, from ancient Roman substitution ciphers to the high-stakes codebreakers of the World Wars.

Whether you're looking to refine your daily puzzle-solving techniques, learn about the most famous unsolved ciphers in history, or simply immerse yourself in the lore of secret messages, our guides provide the context and tactics to sharpen your cryptanalysis skills.

8 min read

Cryptoquote, Cryptoquip, and Celebrity Cipher: The Newspaper Puzzles That Raised a Generation

For decades the daily cipher arrived folded into the features page under one of three names. Here is what actually distinguished them, how the cryptogram reached American newspapers, and why it quietly disappeared from so many.

9 min read

The Codes Nobody Has Cracked: Beale, Zodiac, and the Voynich Manuscript

Three of the most famous unsolved ciphers in history have resisted a century of professional and amateur attack. The reasons they remain unread say a great deal about what makes any cipher breakable.

9 min read

Crossword, Sudoku, Wordle, or Cryptogram: Which Puzzle Fits How You Think?

The four most popular puzzles in English make completely different demands: one tests what you know, one ignores language entirely, one lasts five minutes, and one asks you to reason from evidence alone.

7 min read

Letter Frequency: The Cryptogram Solver's Sharpest Tool

Counting symbols before you guess at them is the single most reliable technique in cryptogram solving, and the oldest. Here is what the frequencies actually are, why they work, and the specific cases where they will mislead you.

7 min read

How to Solve a Cryptogram: A Complete Beginner's Guide

A practical, step-by-step method for cracking a substitution cipher by hand, from the first pass through the short words to the endgame. No mathematics required, only patience and a few reliable patterns.

7 min read

A Short History of the Substitution Cipher

From Spartan battlefield dispatches to the puzzle columns of Victorian newspapers, the substitution cipher has spent 2,500 years hiding messages in plain sight. Here is how the puzzle on your screen came to exist.