00:00
9
7
8
3
9
1
2
2
9
6
4
6
5
2
8
7
2
5
6
9
2
1
7
4
2025-10-17(Advanced) Puzzles
Consider multiple candidates simultaneously
Organize candidates and solve complex squares 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.