00:00
7
1
6
4
3
9
5
4
6
9
1
1
6
7
5
9
2
1
2
7
4
7
5
5
9
7
2
3
3
1
6
2024-07-17(Intermediate) Puzzles
Use reasoning in number puzzles
For squares with multiple candidates, consider order and priority.
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.