00:00
7
1
6
5
4
8
4
2
9
7
1
6
6
8
7
1
1
9
5
2
7
5
3
8
4
1
6
6
1
5
4
2
9
1
3
8
5
8
9
6
3
2024-08-06(Beginner) Puzzles
Check rules while placing numbers
Use elimination to reduce candidate numbers.
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.