Nerdle takes the shape of a daily word guessing game and fills it with arithmetic. The hidden answer is an eight-character equation, such as a short calculation followed by an equals sign and a result, and you have six attempts to find it. Every guess must be a valid calculation, which turns each row into a small puzzle of its own.
It was created by Richard Mann, a London-based data scientist, together with his family and software developer Marcus Tettmar, and launched in January 2022. The site has since grown a wider family of number puzzles, but the classic daily is still where most people begin, and where we spent our two weeks.
Why every guess has to add up
The rule that each guess must be a true equation is what gives Nerdle its character. In a letter game you can throw in a word purely to test letters; here, you have to build a working sum that also tests the digits and operators you care about. That constraint makes the first few rows surprisingly creative.
We found ourselves keeping a couple of reliable openers that use a spread of digits and several different operators. From row two onwards, the thinking becomes genuinely mathematical: if the equals sign is in a certain place, the result must have a certain number of digits, which limits what the left-hand side can be. It is lovely reasoning.
Green, purple and what the hints really tell you
Feedback works much like the letter games. A green tile means the character is correct and in the right place, purple means it appears in the equation but elsewhere, and the darker tiles mark characters that are absent. Operators get the same treatment as digits, so discovering that there is no division in the answer can be just as useful as finding a correct number.
The position of the equals sign is often the most valuable piece of information on the board. Once you know it, you know how long the result is, and the remaining possibilities shrink rapidly. Several of our best finishes came from spending row two purely on fixing that one character.
Order of operations, and other morning traps
Nerdle follows the usual order of operations, so multiplication and division happen before addition and subtraction. That is obvious on paper and surprisingly easy to forget at seven in the morning. One editor lost a whole puzzle to a guess she was certain was valid and that the game, correctly, rejected.
There are also days when several equations fit the evidence and the last row becomes a coin toss between plausible sums. That happened a couple of times in our fortnight and it felt less fair than the equivalent moment in Wordle, simply because numbers offer fewer clues about which answer is more likely.
The wider nerdleverse beyond the daily
The official site describes a wider family of puzzles it calls the nerdleverse, including number-based crosswords and anagram-style games. We dipped into a few and enjoyed them, and they give Nerdle more to offer once the daily is done than most single-puzzle games.
There is also an official app on both major phone platforms, alongside the browser version we mainly played. For the classic puzzle the browser works perfectly well on a phone, with a clear on-screen keypad of digits and operators, but the app is there if you prefer to keep your puzzles in one place.
A Monday-to-Sunday starter plan for Nerdle
- Pick a valid opening equation that uses at least four different digits and two operators, and keep it all week.
- Use row two to pin down where the equals sign sits, since that fixes the length of the answer.
- Before every guess, check the order of operations so the game does not reject your calculation.
- Note which operators turn up most often in answers during the week; patterns appear quickly.
- On the weekend, try one of the other nerdleverse puzzles to see which suits you best.
Green tiles for it
- A genuinely fresh twist: arithmetic makes the familiar format feel new again.
- Building valid guesses is a small, satisfying puzzle on every row.
- Pinning the equals sign gives a lovely early foothold most mornings.
- A wider family of number puzzles waits once the daily is done.
Grey tiles against it
- Final rows can come down to choosing between equally plausible sums.
- Order-of-operations slips punish tired early-morning brains harshly.
- Less social than letter games; a shared sum spoils less but says less too.
Whose breakfast table Nerdle belongs on
Nerdle is for anyone who quietly enjoys arithmetic, from accountants to schoolchildren learning times tables. If letter games leave you cold because spelling was never your thing, this is the daily puzzle most likely to win you over.
Where Nerdle lands after a fortnight of mornings
Nerdle is the best proof we know that the daily guessing format is about logic rather than vocabulary. The requirement that every guess be valid makes each row a small creative challenge, and the wider puzzle family adds staying power. The occasional coin-toss final row keeps it out of the top three, but for numerate solvers it is an easy first choice.
