00:00
6
3
9
5
2
7
3
9
1
8
5
9
5
7
4
6
7
2
1
8
6
4
5
1
3
2
2025-09-01(Advanced) Puzzles
Use full reasoning ability
Apply strategy and logic to advance.
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.