Sudoku Vault

About Sudoku Vault

Sudoku Vault offers number-grid puzzles in three sizes: 4x4, 6x6, and 9x9. Each size has Basic, Normal, Hard, and Expert settings, so the same logic format can provide a lighter puzzle or a more demanding test.

The game supports careful solving as well as direct entry. Pencil-style notes let you record possible values, while Check reviews the filled cells, removes incorrect entries, and locks the correct ones. That feedback helps you work through a grid without losing track of reliable progress.

How to Play Sudoku Vault

Select a cell with the mouse or touchpad, then enter a value using the number pad shown on screen.

Press Note to switch pencil marks on or off when a cell has several possible values.

Use Check to review your entries; wrong values disappear and correct values become locked.

Choose among the available grid sizes and difficulty settings to set the kind of Sudoku puzzle you want to solve.

Tips & Tricks

1Add notes to uncertain cells instead of committing to a value before the surrounding numbers support it.
2Use Check after a group of entries to separate confirmed values from mistakes and keep the grid manageable.
3Start by examining the smaller 4x4 or 6x6 layout if you want fewer cells to compare while practicing the puzzle logic.