Stuck on a hard Sudoku? Want to learn advanced techniques like X-Wing, Swordfish, or ALS? Sudoku Custom is your complete learning system with:
30+ SOLVING TECHNIQUES WITH TUTORIALS Learn every technique from basic Single Candidate to advanced Almost Locked Sets (ALS), Forcing Chains, and more. Each technique includes: - Step-by-step explanations - Visual demonstrations - Interactive examples
PERFECT FOR LEARNING - Beginner? Start with easy techniques - Advanced? Master expert strategies like Jellyfish, Sue de Coq - Stuck? Import ANY puzzle and get detailed solving hints
TENS OF THOUSANDS OF PUZZLES - 7 difficulty levels (Easy → Impossible) - Fresh challenges every day - Perfectly generated for quality solving
POWERFUL SOLVER & IMPORT - Scan or manually input puzzles from newspapers, NYT, Apple News - Get step-by-step solutions with technique explanations - Save puzzles for later - No ads interrupting your learning
COMPETE & TRACK PROGRESS - Global leaderboards - Track your solving statistics - Challenge yourself with harder 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 many more!
Whether you're learning Sudoku or stuck on that impossible puzzle, Sudoku Custom helps you understand WHY each number goes where.