A cryptogram looks like nonsense and is actually a very leaky secret. English is enormously predictable, and the puzzle can't hide that.
Every letter in a quotation has been swapped for a different letter, consistently. Every E might have become a Q — but then every E is a Q, in every word, throughout. That consistency is the crack in the wall, and it's the only one you need.
One thing you can rely on: in a well-made cryptogram, no letter ever stands for itself. If it did, you'd get a free answer, and the puzzle would feel broken. So you can rule that out from the start.
English letters do not appear equally often. Not remotely. In ordinary prose the order runs roughly:
| Rank | Letter | Roughly |
|---|---|---|
| 1 | E | 12% |
| 2 | T | 9% |
| 3 | A | 8% |
| 4 | O | 7.5% |
| 5 | I | 7% |
| 6 | N | 6.7% |
| 7 | S, H, R | 6% |
So the most common symbol in your puzzle is very probably E, and if it isn't, it's T or A. Not certainly — a short quotation can misbehave — but it's the right place to start guessing, and a guess with the odds behind it is worth ten without.
This is where cryptograms really fall apart, and it's much faster than counting.
Look for words with a repeated letter in a distinctive position. A pattern like _ E _ _ E R narrows down fast. Double letters at the end of a word are usually LL, SS, EE, OO or FF. A word ending in a doubled letter followed by nothing else is a strong tell.
And watch for -ING, -ION, -TION and -LY endings. If you've already found T, H and E, then a word ending in your T-symbol, I-symbol, O-symbol, N-symbol is doing you an enormous favour.
This is the actual skill, and it's the one nobody tells you about. Place a letter, and then look at what it does to every other word in the puzzle. If it produces a five-letter word with no vowels, you're wrong — and being wrong quickly is progress. Cross it out and try the next candidate.
Two or three confirmed letters and the whole thing usually falls in a rush. That moment — where the last third of the quotation just resolves, all at once — is the reason people do these.
Go back to frequency and question your first assumption. Nearly every stuck cryptogram is a puzzle where the solver committed early to a common letter being E, and it wasn't. Take it out, put T or A in its place, and see what happens to the little words.
There's a new one here every day — the same puzzle for everybody, with the frequency count already done for you and two letters given free to stand on.
E, at around 12% of all letters, followed by T, A, O, I and N. In a cryptogram, the most frequent symbol is very probably E — it's not a certainty in a short quotation, but it's the best first guess available.
Find the one-letter words. Each one is A or I, with no third possibility, so a single symbol gives you a coin-flip between two letters. Then look for a recurring three-letter word, which is almost certainly THE — that's three more letters in one go.
In a properly made one, never. The cipher is a derangement of the alphabet, meaning no letter maps to itself. You can rely on it, and it lets you rule out possibilities for free.