00:00
3
9
6
7
6
1
2
9
3
5
2
4
4
7
1
8
9
6
7
4
1
8
2
8
6
4
7
9
6
7
8
3
2
2
1
1
2
5
3
4
6
2024-12-24(Beginner) Puzzles
Learn rules while solving
Check each candidate and leave uncertain squares for later.
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.