00:00
3
9
6
3
5
9
2
8
7
4
6
5
5
8
7
7
3
9
3
2
1
4
9
2
3
1
7
8
7
1
3
2024-03-22(Intermediate) Puzzles
Analyze number patterns carefully
If stuck, review previous steps to find corrections.
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.