00:00
3
1
8
2
4
5
1
8
7
4
4
9
5
7
8
3
6
3
2
8
4
8
2
1
5
7
4
7
3
1
2
2024-12-13(Intermediate) Puzzles
Puzzles requiring strategic thinking
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.