00:00
7
2
2
7
8
6
4
8
5
9
6
5
2
9
4
3
8
9
4
9
5
2
8
1
7
3
2025-03-10(Advanced) Puzzles
Thoughtful puzzles requiring strategy
Focus on logic without rushing.
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.