00:00
3
8
4
9
2
5
3
6
5
6
4
1
2
4
3
3
4
9
5
1
7
2
6
2024-03-13(Advanced) Puzzles
Decode challenging placements
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.