00:00
3
5
1
2
6
7
7
5
2
1
2
8
3
5
5
3
2
7
4
6
8
8
1
3
5
8
4
2
1
9
7
8
7
6
5
9
3
9
1
2
5
2025-01-20(Beginner) Puzzles
Check basic rules while solving
For first-timers, use notes to organize your thinking.
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.