00:00
4
9
5
2
7
2
1
8
5
8
5
3
2
4
3
7
4
2
7
5
4
1
8
2025-02-21(Advanced) Puzzles
Challenge yourself with complex patterns
Review previous steps if stuck and correct 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.