00:00
7
2
3
6
5
4
6
2
7
1
5
4
7
9
8
6
8
9
4
2
3
1
3
5
2
9
2025-05-30(Advanced) Puzzles
High-difficulty fun for practice
Think logically without rushing.
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.