The rules
- Every row, column and box must contain the numbers 1–9 exactly once.
- Tap an empty cell and pick a number from the keypad below the board.
- Use the pencil button to jot down candidates in a cell while you think.
- Press “Check” to see if you are on track, or “Hint” if you get stuck.
Getting started: Look for a row, column or box with just one number missing — always a safe place to start.
Step by step
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1Here is the puzzle. The fixed numbers are given.
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2Row, column and box rule out everything else here — only 8 fits.
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3Row, column and box rule out everything else here — only 7 fits.
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4Row, column and box rule out everything else here — only 1 fits.
4 more steps in this walkthrough — the full step-by-step solve is a Pluss feature. About Pluss →
Real puzzle no. 4441125, solved step by step by the logic solver.
Common questions
Can I play right in the browser?
Yes. Pick a Sudoku puzzle and solve it on screen. You can also print it.
Can I link to a specific puzzle?
Of course. Every puzzle has a number, and you can link straight to it: puzzles.flogvit.com/eng/sudoku?nr=100. Replace 100 with the puzzle number — handy for challenging a friend with the very same puzzle.
Can I print the puzzles?
Yes. Each type has a print sheet for one or four puzzles with the answers on a separate page.
Are the puzzles free to use?
Yes, this is a free service. If you want to publish the puzzles elsewhere you must arrange it first — see copyright.