00:00
8
9
3
7
5
5
3
6
7
9
1
8
9
2
4
7
1
3
1
9
5
3
9
2
2
4
1
7
9
8
4
2025-03-14(Intermediate) Puzzles
Develop reasoning skills with 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.