Sudoku Vault
About Sudoku Vault
Sudoku Vault is a free browser-based logic puzzle game offering 4x4, 6x6, and 9x9 grids across four difficulty levels.
Players fill grids with numbers using classic Sudoku rules, aided by a Notes system for pencil marks and a Check button that removes wrong entries and locks correct ones. The game suits beginners through experts and runs instantly in any modern browser.
How to play Sudoku Vault
Sudoku Vault is played by selecting a cell with a mouse or tap and entering a number from the on-screen pad to fill the grid.
Controls
- Mouse / Tap
- Select a cell on the Sudoku grid
- On-screen number pad
- Enter a digit into the selected cell
- Note button
- Toggle pencil-mark mode to record candidate numbers in a cell
- Check button
- Validate entries — removes incorrect inputs and locks correct ones
Tips
- Choose a grid size (4×4, 6×6, or 9×9) and a difficulty level before starting.
- Click or tap a empty cell to select it, then press a number on the on-screen pad to fill it in.
- Activate Note mode to pencil in candidate numbers when you are unsure of a cell's value.
- Tap the Check button periodically to clear wrong entries and lock confirmed correct numbers.
- Continue filling cells until every row, column, and box contains each required digit exactly once.
Why Sudoku Vault stands out
Sudoku Vault sets itself apart from other browser Sudoku titles through several deliberate features that support players at every skill level.
- Three grid sizes in one game. 4×4, 6×6, and 9×9 boards let total beginners start small before tackling the full classic grid.
- Four graduated difficulty tiers. Basic, Normal, Hard, and Expert difficulties provide a clear progression path without needing separate apps.
- Locking Check system. The Check button removes wrong entries and locks correct ones, actively guiding focus rather than just flagging errors.
- Integrated pencil-mark Notes. A dedicated Note toggle lets players track candidate numbers inside cells without cluttering the main input flow.
- Clean, distraction-free design. Minimal UI keeps cognitive load low, letting the puzzle itself remain the sole focus during play.
Sudoku Vault FAQ
Sudoku Vault answers the most common player questions below, covering price, grid sizes, the Check feature, and Notes mode.
- What is Sudoku Vault?
- Sudoku Vault is a free browser-based logic puzzle game with 4×4, 6×6, and 9×9 grids and four difficulty levels. No download or signup is needed to play.
- Tapping the Check button validates your current entries. Incorrect numbers are removed from the grid, and correct ones are locked in place so you can focus on the remaining cells.
- What is the Notes mode in Sudoku Vault?
- Notes mode lets you toggle pencil marks inside a cell to record candidate numbers. Activate it with the Note button, enter your candidates, then switch back to normal input when ready.
- Which grid sizes are available in Sudoku Vault?
- Sudoku Vault offers three grid sizes: 4×4 for beginners, 6×6 for intermediate players, and the full classic 9×9 grid for experienced solvers. Each size has four difficulty levels.
- Is Sudoku Vault free to play?
- Yes, Sudoku Vault is completely free to play in any modern browser. There is no download, signup, or payment required at any point.
Player Reviews
No reviews yet — be the first to review this game.