Birdsuite Note
Markdown notes that start instantly: no account in the browser, synced on servers in the EU (Germany and France) with a free account — shareable and scriptable via API.
Birdsuite Solve
Sudoku — without ads, right in your browser
Sudoku without ads: play in your browser, even with hand gestures — or print puzzle booklets with solutions as PDF.
- No ads
- No account
- Printable PDF
Alternative to sudoku.com
Free
Free: what Birdsuite Solve does without a subscription
Sudokus in four levels as often as you like, plus booklets to print
Included for free
- Four difficulty levels
- Play with mouse, touch, keyboard or hand gestures
- Pencil marks for candidates
- PDF booklets of 6, 12 or 24 puzzles
Free, with no catch
- No account Open the tool and start. No sign-up, no email address, no password.
- No ads No banners, no pop-ups, no sponsored results — in the free plan too.
- No tracking No tracking cookies, no profiles. We only count visits, cookieless and with shortened IP addresses.
- Stays on your device Your files are processed in your browser and never uploaded.
- No payment details No credit card and no trial: the free plan stays free for as long as you use it.
There is no paid plan: everything Birdsuite Solve does is free, with no trial that runs out.
Open Solve for freeBirdsuite Solve is an ad-free sudoku that runs entirely in your browser. You play four levels from easy to expert with mouse, touch, keyboard or hand gestures in front of your camera. You can also print booklets of 6, 12 or 24 sudokus as an A4 PDF, with the solutions at the back. You need no account.
The problem
You just want to solve a sudoku, but most sites are paid for by ads: banners, video ads and a consent dialog with a long list of ad partners. Printed puzzle books with solutions cost extra.
The solution
Solve creates every puzzle in your browser and shows nothing but the grid. If you'd rather solve on paper, you make your own booklet as a PDF.
How it works
-
1
Pick a level
Choose easy, medium, hard or expert — a new puzzle appears right away.
-
2
Play
Press a cell, drag to a number on the wheel and release. Or type the digit on your keyboard.
-
3
Or print
Choose 6, 12 or 24 puzzles, one level or mixed, and download the booklet as a PDF.
Features
No ads
No banners, no video ads, no ad partners. Just the grid.
Play with hand gestures
Switch on hand control: aim with your hand, pinch thumb and index finger, drag to the number and let go.
Puzzle booklets as PDF
6, 12 or 24 sudokus on A4, four per page, with the solutions at the back — to print or to give away.
Four difficulty levels
Easy, medium, hard and expert. Every puzzle has exactly one solution.
Pencil marks
In notes mode you add small candidate digits. When you place a number, it disappears from the notes of neighbouring cells.
Number wheel for mouse and touch
One motion instead of many clicks: press, drag towards the number, release. The keyboard works too.
Conflicts shown
If a digit appears twice in a row, column or box, Solve highlights the cells involved.
Data and privacy
- Processing
- Puzzles, play and PDF booklets are created in your browser. For hand control, a model analyses the camera image on your device; we serve that model from our own server.
- Storage
- We store no game progress and no camera images. Our server only counts, anonymously, that a puzzle or booklet was created — no personal data.
- Processors
- None. The page itself is served by our server at Host Europe in Strasbourg, France.
Test it yourself: Test it yourself: open Solve, switch off Wi-Fi and mobile data, and start a new puzzle. Creating and playing keep working, because everything runs in your browser.
Pricing
Free – no subscription
Sudokus in four levels as often as you like, plus booklets to print
- Four difficulty levels
- Play with mouse, touch, keyboard or hand gestures
- Pencil marks for candidates
- PDF booklets of 6, 12 or 24 puzzles
Solve has no paid plan. There is no limit from our side; very large files only depend on your device.
What Solve can’t do
- There are no variants such as killer, samurai or mini sudoku.
- There are no daily puzzles, leaderboards or statistics.
- Your progress isn't saved; reloading starts a new puzzle.
- There are no hints, no undo and no timer.
- Hand control needs a camera and enough light.
Birdsuite Solve compared
| Criterion | Birdsuite Solve | Typical sudoku sites |
|---|---|---|
| Ads | None | Mostly ad-funded |
| Third-party tracking | No | Often, with a consent dialog |
| Account needed | No | Usually not |
| PDF booklet with solutions | Yes, 6, 12 or 24 puzzles | Sometimes, often single sheets |
| Play with hand gestures | Yes | Not common |
| Variants such as killer sudoku | No | Often yes |
Last updated: 21 October 2026
Who is it for?
Puzzle fans
Play a quick sudoku without video ads getting in the way.
Grandparents and care homes
Print an A4 booklet with puzzles and solutions for the coffee round.
Schools and cover lessons
Make a booklet of 24 mixed puzzles for the whole class in a few clicks.
Better together
Birdsuite Shrink
Compress, resize and convert images in batches to JPEG, WebP or PNG — in your browser, no upload; location data is removed on conversion.
Frequently asked questions
- Is it really free and ad-free?
- Yes. Solve shows no ads, includes no ad partners and needs no account.
- How does gesture control work?
- Through your camera: a model recognises your hand in the browser. You aim at a cell with your hand, pinch thumb and index finger, drag to the number on the wheel and let go. The camera image is analysed on your device, never stored and never sent.
- Can I print sudokus?
- Yes, as a booklet of 6, 12 or 24 puzzles. The PDF is A4, with four puzzles per page and the solutions at the back.
- Which difficulty levels are there?
- Four: easy, medium, hard and expert. For a booklet you can pick one level or mix all four.
- Can I add pencil marks?
- Yes. In notes mode the number wheel sets small candidate digits, and a placed number clears them from neighbouring cells.
- Does every puzzle have exactly one solution?
- Yes. While creating a puzzle, Solve checks at every step that it stays uniquely solvable.
- Is my progress saved?
- No. Solve saves no game progress; if you reload the page, a new puzzle starts.
Ready? Birdsuite Solve runs right in your browser.
Last updated: 21 October 2026