SODUKU is a calm, polished brain-testing number puzzle for people who just want to play.
No account. No sign-up. Just play.

PLAY YOUR WAY
- Classic: four levels, Easy, Medium, Hard and Expert.
- Daily: one new puzzle every day. Keep your streak going.
- Challenge: three mistakes and the puzzle is over.
- Practice: relax, learn, no pressure.

HELP WHEN YOU NEED IT
- Notes: pencil in candidates. Matching notes clear when you place a number.
- Three-step hints: a pointer, the possible numbers, then the answer.
- Instant mistake check, undo and redo.
- Watch an optional video for an extra hint, or to retry a puzzle you lost.

REWARDS
- Earn K coins for every puzzle you solve.
- Claim 300 free coins every day.
- A "YOU WIN!" celebration when you finish.

TRACK YOUR PROGRESS
- Best times, averages and streaks for each level.
- 23 achievements, from your first game to flawless Expert solves.
- Back up your progress and restore it any time.

COMFORTABLE TO PLAY
- Purple light and dark themes.
- Large text, a high-contrast board and a reduce-motion setting.
- Screen reader support.
- Sound effects and vibration you can switch off.
- Phones and tablets, portrait and landscape.

FAIR PUZZLES
Every puzzle has exactly one solution and is rated for difficulty, so Hard and Expert need real techniques, not guessing.

ADS
SODUKU is free and supported by ads from Google AdMob: banners on the Home and Statistics screens, optional rewarded videos, and a full-screen ad that can appear after you win. Ads never appear while you solve a puzzle. Your games, stats and coins stay on your phone. See our privacy policy.

Questions or ideas? Write to us at support@klinovalabs.com.

KLINOVA LABS

Additional Information