Sudoku Sprint
Sudoku Sprint is SkillRival’s fast, clean Sudoku mode. Fill every row, column and box correctly, use notes when you need them, and check the board when you are ready.
Play Sudoku Sprint
Free in your browser. No download required; open the game and start a fresh challenge.
How to play
- Choose Easy, Medium or Hard.
- Fill the empty cells so each number appears once in every row, column and box.
- Use notes, undo and reset when useful, then check the completed board.
What to expect
- Easy uses a compact 4x4 board, Medium uses 6x6, and Hard uses the full 9x9 format.
- Live mistake feedback is optional, so you can solve with or without answer assistance.
- Each new challenge uses a fresh generated puzzle and keeps your current run on the device.
Difficulty
Easy is a compact 4x4 board, Medium is 6x6 and Hard is the full 9x9. Pick the smaller boards to learn the row, column and box logic, then move up to classic Sudoku.
Frequently asked questions
Is Sudoku Sprint free to play?
Yes. Sudoku Sprint is free in your browser with no download and no sign-up required.
What should I know before playing Sudoku Sprint?
Easy uses a compact 4x4 board, Medium uses 6x6, and Hard uses the full 9x9 format.
How does difficulty change Sudoku Sprint?
Easy is a compact 4x4 board, Medium is 6x6 and Hard is the full 9x9. Pick the smaller boards to learn the row, column and box logic, then move up to classic Sudoku.
Do I need an account to keep my scores?
No. Daily scores and lab games work as a guest. Creating a free account keeps your profile, streaks and Rival history across devices.
More free SkillRival games
More logic games · Browse all 20 games · Play the Daily Circuit