00:00
9
5
4
2
8
6
8
7
5
8
1
2
4
9
3
1
2
1
3
8
6
4
6
8
2024-10-06(Advanced) Puzzles
Thoughtful puzzles requiring strategy
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.