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9
8
7
1
4
8
5
5
1
3
9
8
6
1
5
4
9
8
7
6
2
5
5
3
7
6
6
8
9
1
7
3
2
5
3
2
8
9
6
1
7
2025-04-17(Beginner) Puzzles
Develop number placement skills gradually
Narrow down candidates in each row and column.
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.