00:00
2
5
4
3
7
6
3
1
5
3
8
5
9
6
8
1
4
6
6
4
7
3
9
7
2
9
5
9
6
4
2
2025-10-09(Intermediate) Puzzles
Tackle slightly complex patterns
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.