Puzzle
Numbers
Guests welcome
Featured
About
Fill every row, column and box with digits 1–9. Arcory Sudoku generates unique-solution puzzles, supports pencil notes, undo/redo and careful hints.
How to play
Select a cell, then enter a digit with the pad or keyboard. Toggle Notes for pencil marks. Use Hint sparingly — each hint fills one correct cell. A full but incorrect grid is not a win.
Features
- Easy, Medium and Hard
- Notes mode
- Undo and redo
- Hints
- Save and resume
Difficulty
Choose Easy, Medium, or Hard before you start.
easy
medium
hard