00:00
7
1
5
3
6
1
2
3
6
2
3
1
8
2
3
4
9
4
1
8
4
9
7
5
8
1
2
2024-10-09(Advanced) Puzzles
High-level puzzles for focused solving
View the whole board to proceed logically.
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.