About Sudoku Vault

Sudoku Vault is a classic number-placement puzzle that asks you to fill grids so that every row, column, and sub-region contains no repeated digits. You can tackle 4×4 grids for quick rounds, 6×6 for a middle ground, or traditional 9×9 boards when you want a longer session. Each size offers four difficulty tiers—Basic, Normal, Hard, and Expert—so whether you're learning the rules or hunting for a brain-teaser, there's a puzzle that fits. The game includes a notes feature that lets you pencil in possible candidates for each empty cell, and a check button reviews your work by clearing mistakes and locking confirmed numbers in place. Available now on PokiGame Arcade, it's a clean, straightforward way to sharpen logic skills at your own pace.

How to play Sudoku Vault

Mouse or tap – select a cell
Mouse or tap on-screen keypad – enter a number
Note button – toggle pencil-mark mode for candidates
Check button – validate entries and lock correct answers