00:00
6
9
9
4
8
3
6
4
5
2
6
1
3
8
4
7
2
9
1
5
4
6
6
4
5
9
3
4
9
5
8
2025-04-12(Intermediate) Puzzles
Consider multiple candidates while solving
Focus on logic to efficiently complete puzzles.
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.