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8
7
4
9
3
2
2
1
7
8
3
5
1
6
7
4
1
3
2
9
4
8
5
3
2
9
5
9
6
7
1
1
5
9
6
6
1
8
7
4
3
2024-06-23(Beginner) Puzzles
Fill numbers quickly and confidently
Check the rules each time you place a number.
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.