00:00
5
6
2
7
9
5
1
1
3
2
7
5
3
1
7
2
5
9
9
1
6
7
2
9
6
8
5
1
6
3
2
2025-03-17(Intermediate) Puzzles
Read number patterns logically
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.