趣数独-Sudoku Custom

Stuck on a difficult Sudoku puzzle? Want to learn advanced techniques like X-Wing, Swordfish, ALS, etc.? Sudoku Custom is your complete learning system:

30+ solving techniques and tutorials

Learn all techniques from basic Single Candidate to advanced Almost Locked Sets (ALS), Forcing Chains, etc. Each technique includes:

- Step-by-step explanations

- Visual demonstrations

- Interactive examples

The perfect learning tool

- Beginners: Start with simple techniques

- Advanced players: Master expert strategies like Jellyfish, Sue de Coq, etc.

- In trouble: Import any puzzle and get detailed hints

Tens of thousands of puzzles

- 7 difficulty levels (easy → ultimate)

- Daily new challenges

- High-quality generation algorithm

Powerful solver and import function

- Scan or manually enter Sudoku puzzles from newspapers, NYT, Apple News

- Step-by-step solutions with technique explanations

- Save puzzles to solve later

- Learn without ad interference

Contests and progress tracking

- Global leaderboard

- Track solving statistics

- Challenge higher-difficulty puzzles

**Supported techniques**:

Naked/Hidden Singles, Pairs, Triples, Quadruples | Block Elimination | X-Wing | Swordfish | Jellyfish | XY-Wing | XYZ-Wing | Skyscraper | X-Chain | Forcing Chains | Almost Locked Sets (ALS) | Sue de Coq | Unique Rectangle | and more!

Whether you're learning Sudoku or challenging seemingly impossible puzzles, Sudoku Custom can help you understand why each number goes in that position.

Download now and become a Sudoku expert!