00:00
7
4
6
3
1
5
2
8
2
8
7
4
9
1
9
1
6
6
5
1
8
3
7
2
2
3
4
6
8
7
6
5
2
8
9
3
5
1
8
9
2
2025-10-19(Beginner) Puzzles
Number Place suitable for first-time solvers
Review your progress several times to minimize mistakes.
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.