How to play
- 1
Fill the grid so each row, column, and box uses unique digits.
- 2
Start on smaller grids and work up to 9x9.
- 3
Faster, correct solves score more points.
What this test measures
This game measures logic and pattern finding under time pressure. You place digits by elimination rather than guessing every cell.
Score guide
| Grade | Range |
|---|---|
| Grandmaster | 25+ pts |
| Expert | 18–24 pts |
| Great | 12–17 pts |
| Average | 6–11 pts |
| Beginner | 3–5 pts |
| Novice | 0–2 pts |
FAQ
- How is the score counted?
- You earn points for completed puzzles. Harder grids and faster solves are worth more.
- What sizes are there?
- Puzzles range from 4x4 up to 9x9 so you can warm up before the full grid.
- Can I play on a phone?
- Yes. Select a cell, then tap a digit. The layout is built for a 360px screen.
- Is this a timed exam?
- No. It is a speed-sudoku game. There is no official ranking beyond this site's leaderboard.