00:00
3
8
5
7
4
9
2
1
9
6
8
3
2
7
8
2
6
1
5
3
8
2
5
2025-10-06(Advanced) Puzzles
Tackle tough puzzles with patience
Focus on logic 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.