A cryptogram is a word puzzle where a message has been encrypted by substituting each letter of the alphabet with a different letter. Unlike codes, the substitution is consistent throughout — if the letter A is encrypted as Q in one place, it's Q everywhere. Your job is to figure out the pattern and decode the hidden quote.
Each puzzle contains a famous quote encrypted with a unique random cipher. Click any encrypted letter tile to select it — all matching encrypted letters highlight. Type the letter you think it represents, and all instances fill in simultaneously. Use the frequency chart to guide your guesses: E is the most common letter in English at 12.7%, followed by T at 9.1%. Spot double letters, single-letter words, and short word patterns to crack the code faster.
The letter frequency sidebar shows how often each encrypted letter appears in your puzzle — map the most frequent to E, T, A. The pattern spotter highlights repeated sequences to find common words. The hint button reveals one correct letter mapping when you're stuck. Use undo to remove a wrong guess without penalty.
Start by looking for single-letter words (usually A or I), then short words (THE, AND, IS, OF). Use letter frequency — E is the most common letter in English at ~12.7%. Look for double letters (LL, SS, EE) and word patterns. Repeated letter groups often indicate common words. Work from the edges in — each correct letter reveals more of the puzzle.
A letter substitution cipher replaces each letter of the alphabet with a different letter consistently throughout a message. For example, every A might become X, every B becomes Q, and so on. The substitution is always consistent — if A=X in one place, it's X everywhere. This makes it breakable through pattern analysis and frequency counting.
The most frequent letters in English in order are: E (12.7%), T (9.1%), A (8.2%), O (7.5%), I (7.0%), N (6.7%), S (6.3%), H (6.1%), R (6.0%), D (4.3%), L (4.0%), U (2.8%). Knowing this helps you make educated guesses when solving cryptograms — the most common encrypted letter is probably E or T.