Play Sudoku, without the clutter.
Enter any grid to get the solution and a step-by-step explanation in plain language.
Open solverSix-puzzle packs per difficulty with an answer key, formatted for print.
Open packsThe calmer way to solve puzzles.
Considered typography, an easy-on-the-eyes color scheme, and hints that teach the logic instead of leaking the answer.
Minimal, focused interface
Considered typography, soft contrast, and dark mode, so the grid stays the focus for hours.
Logic-explaining hints
Each hint names the rule behind it — naked single, hidden single, and more — so you improve.
Printable packs
Six-puzzle packs across four difficulties with answer keys, ready to print or save as PDF.
Step-by-step solver
Stuck on a paper puzzle? Enter the grid and walk through every placement, with reasoning.
Three modes, one engine.
Pure TypeScript, running in your browser and always available offline.
- 01
Play
Pick a difficulty and start solving. Keyboard, touch, or the number pad — whichever suits you.
- 02
Learn
Ask for a hint when you're stuck. It shows exactly why one digit is forced in one cell.
- 03
Print
Take puzzles offline. Six puzzles per pack and one answer page — for travel or the classroom.
About the Sudoku suite
A free, complete Sudoku kit: play unlimited puzzles with AI-assisted hints, solve any puzzle instantly, and print thousands of high-quality printable PDFs for classrooms, newsletters, or pen-and-paper solving. All puzzles are generated and validated in your browser — no accounts, no ads between games, no move counter behind a paywall.
How it works
Puzzles are produced by a local generator: it starts from a valid completed grid, removes cells symmetrically, and verifies that exactly one solution remains, guaranteeing a properly constrained puzzle at every difficulty. The hint engine checks candidates in real time and can solve any valid grid deterministically. The printable suite generates PDF-ready packs at five difficulty levels with blank grids, solution pages, and consistent layouts — all rendered client-side.
Limits & requirements
Everything works in any modern browser and largely offline after the page loads. Printable packs are generated on demand; extremely large batches take a few seconds to render. Puzzles entered from a newspaper or a book can be pasted into the solver for an instant check or fill-in.
Privacy
There is no leaderboard account and nothing to sign into. Your game state lives in your browser’s local storage and can be cleared anytime; no personal data is collected.