00:00
7
9
3
4
1
6
3
6
2
7
9
1
8
2
9
3
4
5
1
6
7
7
2
9
4
3
4
6
5
7
8
3
3
4
5
2
5
7
3
4
1
2025-01-24(Beginner) Puzzles
Learn rules while solving
Fill the simplest squares first for efficiency.
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.