Play Sudoku, beautifully.
A minimal, distraction-free Sudoku with AI logic hints, a step-by-step solver, and printable puzzle packs. Generated entirely in your browser.
Enter any grid — get the solution and a human-readable step-by-step explanation.
Open solverCurated six-puzzle packs per difficulty with an answer key, formatted for print.
Open packsThe calmer way to puzzle.
Clean typography, a color scheme that won't fatigue your eyes, and hints that actually teach you something.
Minimal, elegant UI
Thoughtful typography, soft contrast and dark mode support — so the grid stays the focus for hours.
AI logic hints
Hints explain the rule — naked single, hidden single, and more — so you get better.
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 it and walk through every placement with reasoning.
Three modes, one engine.
Pure TypeScript — runs in your browser, always offline-capable.
- 01
Play
Pick a difficulty and start solving. Keyboard, touch, or the number pad — whichever you prefer.
- 02
Learn
Ask for a hint whenever you're stuck. It reveals exactly why one digit is forced in one cell.
- 03
Print
Take puzzles offline. Six puzzles per pack, one answer page — ideal 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.