00:00
5
7
3
1
2
9
1
1
2
4
7
6
8
8
2
3
7
9
8
6
4
5
7
4
2024-03-07(Advanced) Puzzles
Consider multiple candidates simultaneously
Follow steps to gradually complete difficult puzzles.
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.