00:00
4
7
3
5
9
7
8
2
9
7
8
6
2
6
4
9
5
9
2
2
6
5
6
3
1
4
2
5
9
4
7
2024-09-18(Intermediate) Puzzles
Consider number order and candidates
If stuck, review previous steps to find corrections.
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.