00:00
3
6
6
4
1
9
5
4
1
1
2
6
5
3
8
4
4
5
4
3
8
2
3
8
1
6
2024-10-21(Advanced) Puzzles
Combine strategy and logical reasoning
Follow steps to fill numbers efficiently without forcing.
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.