00:00
5
3
2
1
1
9
7
9
6
7
8
1
9
2
5
2
9
5
2
6
8
4
1
7
2025-02-03(Advanced) Puzzles
Test reasoning and strategy skills
Apply strategy and logic to advance.
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.