About NumGrid
A new number puzzle every day.
What we do
To build a daily number puzzle that rewards arithmetic deduction over pure guessing — fast to learn, satisfying to solve in under a minute, and shareable in three rows of emoji.
We focus on daily number puzzles. Every page on numgrid.org is built from a generated catalog of non-trivial 5-digit numbers paired with their digit sum and parity, cited and linkable so readers can trace any number back to its source.
Who this is for
NumGrid is built for anyone who enjoys Wordle, Mastermind, Bulls and Cows, or a quick math puzzle with their morning coffee.
Why this exists
Public data on daily number puzzles is technically free, but practically locked behind file formats, acronyms, and paywalled dashboards. NumGridexists to close that gap: take the raw federal and public-sector data, and turn it into pages a normal person can read in thirty seconds.
How we work
- Primary source only. We pull from a generated catalog of non-trivial 5-digit numbers paired with their digit sum and parity and cite the exact dataset and version on every page.
- No invented numbers. If a figure is not in the underlying public data, it does not appear on numgrid.org. We never generate synthetic statistics to fill gaps.
- Methodology, in plain English. Each daily puzzle is a 5-digit number drawn from a curated pool of 400 non-trivial sequences (no all-same-digit, no pure ascending or descending). The pool is sorted by digit diversity so the rotation eases new players in with more-unique-digit puzzles first.
- Refreshed on a schedule. A new puzzle releases every day at 00:00 UTC. The archive includes every past puzzle since launch.
- Corrections welcome. Readers flag issues all the time. When the source fixes a record, NumGrid follows.
Known limitations
NumGrid stores no player data on a server. Streak, win-rate, and play count live in your browser's local storage only. We have no accounts, no email collection beyond an optional newsletter, and no third-party analytics other than Google Analytics for aggregate traffic measurement.
Why we built NumGrid
Wordle proved that a 60-second daily puzzle is the perfect format for the web. Most Wordle alternatives just swap the theme — there are word, geography, and movie versions, but very few that change the underlying mechanic. NumGrid adds a real deduction layer by giving the player free arithmetic hints. The digit-sum hint alone collapses the search space from 100,000 candidates to a few thousand. We wanted a daily puzzle that rewards the same kind of constraint-solving as Mastermind or Bulls and Cows, but in a clean Wordle-shaped interface.
How NumGrid stays free
Display ads (Google AdSense) on the result screen, archive list, and content pages — never inside the gameplay area. No subscription, no paywall, no premium tier.
About the games network
NumGrid is part of a small network of independent daily-puzzle games. The other games include LexSweep (5×5 word-square daily), HexMerge (hex-grid 2048-variant endless), and MapDash (geography-trivia daily). The hub at PuzzleDaily collects every day’s puzzles in one place.
Independence
NumGrid is an independent publication. We are not funded, owned, or directed by any of the agencies, companies, or organizations that appear in our data. Hosting is paid for by advertising — see our Privacy Policy for details — and we do not take paid placements, sponsored rankings, or "remove-my-entry" fees.
History
NumGrid launched in 2026 as part of a small portfolio of independent public-data sites. It has been maintained and updated continuously since.
Contact
Tips, corrections, data-partnership questions, and press inquiries: hello@numgrid.org. More options on our contact page.