00:00
4
3
6
8
5
7
1
6
3
4
1
5
8
6
3
7
1
8
9
5
7
6
4
2
7
2025-07-31(Advanced) Puzzles
High-difficulty fun for practice
Check overall balance and solve complex patterns.
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.