What is a cryptogram?
A cryptogram is a short piece of text — nearly always a quotation — hidden behind a substitution cipher. Every letter of the alphabet is swapped for something else: another letter, a number, a symbol. Nothing is scrambled, nothing is removed. The sentence is still sitting there in the same order, wearing a disguise. Your job is to work out which disguise belongs to which letter, and the sentence comes back.
That is the entire genre. A crossword asks what you know. A sudoku asks how carefully you can count. A cryptogram asks something narrower and stranger: can you recognise English from its shape alone, before you can read a word of it?
The one rule that makes it solvable
Cryptograms use a monoalphabetic substitution cipher, and that single word is the whole reason the puzzle is possible. Monoalphabetic means one alphabet, used consistently: whatever stands in for E at the start of the sentence stands in for E everywhere else in it, without exception, all the way to the full stop.
That consistency is a leak. It means the disguised text keeps every structural fingerprint the original had. If a letter appeared four times, its replacement appears four times. If two words rhymed on the same three letters, their replacements share the same three symbols. If a word had a double letter in the middle, the disguised version has a doubled symbol in exactly the same place.
So you never actually have to guess at the message. You attack the pattern. A three-symbol word that opens a sentence is overwhelmingly likely to be THE. A two-symbol word whose second symbol you already know to be S is probably IS or AS. A symbol that shows up more often than any other is a strong candidate for E, the most common letter in written English. Each of those small commitments constrains the next one, and the constraints compound faster than you expect — most solvers find the puzzle collapses in a rush somewhere around the fourth or fifth confirmed letter.
Word spacing and punctuation are left untouched, which is a much bigger gift than it looks. They tell you where words begin and end, which apostrophes are hiding a T or an S, and roughly how the sentence is built before you've decoded a single letter of it.
Letters, numbers, or symbols — the cipher is a costume
Newspapers usually run cryptograms letter-for-letter: the ciphertext looks like a wall of nonsense-English, and by long-standing convention no letter is ever allowed to stand for itself. Puzzle books sometimes use small symbols or glyphs. We use numbers, 1 to 26 — each letter gets a number, and that number appears under every cell where the letter belongs.
None of these are different puzzles. They are the same cipher in different clothes, and they are solved identically. We chose numbers for a practical reason: on a screen, a number underneath a blank cell reads unambiguously as a code that needs filling in, where a letter underneath a blank cell reads, to most people, as a letter that is already solved. It removes a whole category of confusion that print never had to deal with, because print never had a cursor.
What a cryptogram is not
It is not a code in the strict sense — codes replace whole words or ideas, ciphers replace individual letters, and a cryptogram is firmly a cipher. It is not an anagram; letters stay exactly where they were. It is not cryptography in the modern, security sense either. A monoalphabetic substitution cipher has been reliably breakable for over a thousand years, since the ninth-century scholar al-Kindi wrote down how to attack it by counting letters. That is precisely what makes it a good puzzle and a terrible secret.
And a cryptogram is not the same thing as a cryptoquote or a Cryptoquip, though the words get used interchangeably. A cryptoquote is a cryptogram whose hidden text is specifically a quotation with a named speaker; Cryptoquip is a particular syndicated newspaper feature. All cryptoquotes are cryptograms — not the other way round. See cryptoquote vs cryptogram for the full comparison.
A worked example: Dickens, twelve words
- Notice the repeat before you decode anything. The first three words and the seventh, eighth and ninth are the same three number groups in the same order:
14 10 / 17 6 5 / 10 18 21. You have not solved a single letter yet and you already know the sentence says the same thing twice. That is the monoalphabetic rule doing your work for you. - Spend the free letters. T = 10 and A = 6 are given. Fill every 10 and every 6.
- The two-letter opener.
14 10is? T. Two-letter English words ending in T: at, it. A is already 6, so 14 is not A — 14 = I, and the first word is IT. - The five-letter word you can now half-read.
10 14 7 21 5readsT I ? ? ?. It ends the clause before a comma and repeats at the end of the sentence. TIMES fits: 7 = M, 21 = E, 5 = S. - Confirm with the second word.
17 6 5is now? A S→ WAS, so 17 = W. The check passed, which means step 4 was right. - The three-letter word.
10 18 21isT ? E→ THE, so 18 = H. - Now the fourth word falls out.
8 21 5 10is? E S T→ BEST, 8 = B. - Use the long word to crack the short one.
17 3 20 5 10isW ? ? S T→ WORST, giving 3 = O and 20 = R. That hands you3 25=O ?→ OF, so 25 = F. - Read it."It was the best of times, it was the worst of times."
Nine steps, and only steps 3 and 4 were guesses — everything after them was forced. Note also that 21 (E) is not the most common code on this board; 10 (T) appears eight times to E's five. On a twelve-word sample, letter frequency is a hint, not a law — a point developed on letter frequency in English.
How our puzzles are built
Every puzzle here hides a real, attributed quotation, not machine-generated filler — the line you uncover is meant to be worth uncovering. The cipher is generated fresh per puzzle, so the same quote never wears the same mapping twice. Browse a hub like literature cryptograms to see the range.
A handful of letters start already revealed to give you a foothold, and that handful shrinks as your solve count climbs: an experienced solver gets less scaffolding than someone on their first board. E is never one of the free ones — it is the single most useful letter in the puzzle, so you always earn it. And you get a little room to be wrong: two mistakes are survivable, a third ends the run, which is enough pressure to make you check a guess before you commit it.
Try one now
- Start with a short, forgiving board in easy cryptograms.
- Or read the step-by-step method in how to solve cryptograms.
Common questions
What is a cryptogram in simple terms?
A cryptogram is a sentence — usually a famous quote — where every letter has been swapped for a different letter, number or symbol, always the same swap for the same letter. You solve it by working out which swap belongs to which letter until the sentence is readable again. Nothing is rearranged or removed; the words are still in their original order.
How do you solve a cryptogram?
You look for patterns rather than meaning. Short words are the best way in — a three-letter word opening a sentence is usually THE, and two-letter words are a small, guessable set. Count which symbol appears most often and try it as E. Look for doubled symbols, which usually mean LL, EE, SS, OO or TT. Each confirmed letter narrows the options for the next. There is a full step-by-step method in our guide to solving cryptograms.
What is the difference between a cryptogram and a cryptoquote?
A cryptoquote is a kind of cryptogram. "Cryptogram" is the umbrella term for any text hidden behind a letter-substitution cipher — it could be a pun, a proverb, a joke, anything. A cryptoquote is specifically a cryptogram of a quotation, normally with the speaker named. They are solved in exactly the same way; the difference is editorial, not mechanical. We compare all three terms, including Cryptoquip, on cryptoquote vs cryptogram.
Are cryptograms hard?
It depends far more on the puzzle than on you. A short, familiar quote with common vocabulary can be solved in a couple of minutes once you know the method; a long quote using unusual words, with few letters revealed at the start, can take much longer. That is why our puzzles are scored into easy, medium and hard tiers based on their length, vocabulary and how many distinct letters they use. Almost everyone finds the first few solves slow and the curve steep after that.
Is a cryptogram a code or a cipher?
Technically a cipher. The distinction cryptographers draw is that a code replaces whole words or concepts with other words or symbols, while a cipher works on individual letters. A cryptogram substitutes letter by letter, so it is a cipher — specifically a monoalphabetic substitution cipher, one of the oldest forms there is.
What is the point of the numbers under the letters?
Each number from 1 to 26 stands for one letter of the alphabet, consistently through the whole puzzle. Newspaper cryptograms print letters instead of numbers, but the puzzle is identical. We use numbers so an unsolved cell reads clearly as something still to be worked out, rather than looking like a letter that has already been filled in.