Learn strategies to help you solve even the most difficult sudoku puzzles.
Basic Strategies
- Singles in Rows, Columns, and Blocks Strategy
- Naked Pairs, Naked Triples, Naked Quads Strategy
- Hidden Pairs, Hidden Triples, Hidden Quads Strategy
- Pointing Pairs, Pointing Triples, Intersection Removal Strategy
- Box/Line Reduction Intersection Removal Strategy
Advanced Strategies
- X-Wing Strategy
- Simple Coloring (Singles Chains) Strategy
- Y-Wing Strategy
- Rectangle Elimination
- Swordfish Strategy