Sudoku

Osavus Technology Ltd

About this game

Master Sudoku with intelligent hints that actually teach you how to solve puzzles.

Unlike other Sudoku apps that tell you the answer, our hint system explains the exact technique needed - from simple singles to advanced strategies like X-Wing, Swordfish, and chains. Every hint is a learning opportunity.

FEATURES
• 5 Difficulty Levels: Easy, Normal, Hard, Expert, and Master. Difficulty is based on the solving techniques required, not just the number of clues.

• 60+ Solving Techniques: Learn fundamental strategies used by competitive Sudoku players:
- Naked and Hidden Singles
- Pointing Pairs and Box/Line Reduction
- Naked and Hidden Pairs, Triples, Quads
- X-Wing, Swordfish, Jellyfish
- XY-Wing, XYZ-Wing, W-Wing
- Simple Coloring and Multi-Coloring
- Unique Rectangles
- Alternating Inference Chains
- And many more!

• Smart Scoring: Earn points based on the difficulty of techniques you use. Speed bonuses reward quick thinking, and streak multipliers reward consistency.

• Pencil Marks: Track candidates for each cell as you work through the puzzle.

• Unlimited Puzzles: Every puzzle is uniquely generated with guaranteed single solution.

• Clean Design: Distraction-free interface focused on the puzzle.

PERFECT FOR
• Beginners wanting to learn proper Sudoku techniques
• Experienced players looking to master advanced strategies
• Anyone who wants more than just a number-filling game

Every puzzle is rated by the hardest technique required to solve it, so you always know what you're getting into. Start with Easy to build fundamentals, then progress through the difficulties as your skills improve.

No ads. No interruptions. Just pure Sudoku.

What’s new

[1.0.11] - 2026-01-04 (versionCode 12)
Changes:
- Algorithm optimisations and documentation updates
- Add timing instrumentation and automate changelog management