00:00
7
9
1
5
8
8
3
9
5
1
2
1
6
8
7
5
7
1
9
6
5
4
2
9
4
5
8
1
7
2
5
8
3
6
4
9
4
5
7
1
8
2024-10-07(Beginner) Puzzles
Check rules while placing numbers
Double-check each number after placing it.
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.