About Sudoku Free
Sudoku Free is a classic number placement puzzle presented with a light Japanese travel theme. The rules are the ones the whole world knows: a nine by nine grid, split into nine three by three boxes, with some digits already filled in, and your task is to complete it so that each row, column, and box holds every digit from 1 to 9 exactly once. There is no arithmetic involved, only logic and attention, which is why the puzzle translates so well across languages and ages.
It suits a browser because a puzzle takes anywhere from a few minutes to half an hour depending on the difficulty you choose, and it saves your place if you leave. This version offers levels from simple to expert, a notes mode for pencil marks, and a clear interface that works on both portrait and landscape screens. Nothing to install and no account to create.
Sudoku Free is for anyone who enjoys a quiet logic puzzle, from beginners learning the basic scanning techniques to experienced solvers who want expert grids that demand pairs, triples, and chains. It pairs naturally with Minesweeper and FreeCell for players who like puzzles with a single correct answer and no luck.
via GamePix
- Genre
- Puzzle
- Released
- Jul 2025
- Last updated
- Jul 2025
- Technology
- HTML5 browser game
- Device support
- Check game controls
- Orientation
- flexible
- Glaze Games login
- Not needed to open player
- Publisher login
- Check game requirements
Tags and genres
How to play Sudoku Free
Fill a nine by nine grid so every row, column, and three by three box contains the digits 1 through 9 exactly once.
- 1Press Play and choose a difficulty, from simple grids with many given numbers to expert grids with few.
- 2Click or tap an empty cell to select it, then choose a digit from the number pad or type it on your keyboard.
- 3Use the pencil or notes mode to write small candidate digits in a cell when you are not sure yet.
- 4Check each row, column, and box for a digit that has only one possible position, and place it.
- 5Continue until the grid is complete. The puzzle is solved when every cell is filled with no repeats.
Tips and strategy
- Scan for the digit that appears most often in the grid first. It usually has the fewest open positions left.
- Work box by box, asking where each missing digit can legally go, before moving to rows and columns.
- On harder grids, look for a cell with only two candidates and see what each choice forces.
- Do not guess on expert puzzles. Every grid here has a single logical solution, and a wrong guess ruins the board.
- Notes mode is your friend. Writing candidates in cells makes hidden pairs and triples visible.
Frequently asked questions
Is Sudoku Free free to play?
Yes. Sudoku Free is free to play on Glaze Games in your browser with no purchase or account.
Can I play Sudoku Free unblocked at school?
It runs in the browser with no download or account, so it works anywhere the site itself loads. Some school and office networks filter game sites, and Glaze Games cannot override those filters.
Does Sudoku Free work on mobile?
Yes. The game supports both portrait and landscape, so it plays well on a phone held either way.
How do I get better at hard Sudoku puzzles?
Use notes mode to track candidates, then look for cells or units where only one digit fits. Hard grids are solved by finding these forced placements, not by guessing.
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