00:00
5
7
9
4
7
1
3
5
6
3
7
4
8
6
1
5
7
2
6
9
5
1
2025-11-18(Advanced) Puzzles
Use full logic for complex solving
Review previous steps if stuck and correct logically.
Tips for Solving Sudoku
- Start with squares with fewer numbers: Begin with rows, columns, or blocks that already have more numbers filled; fewer candidates make it easier to solve.
- Pencil marks (notes): For beginners, write possible numbers in small font in empty squares for reference.
- Review: If stuck, check for duplicate numbers or rule violations.
- Basic rule: Do not repeat the same number in the same row, column, or 3x3 block.