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5
6
3
5
7
8
6
1
2
9
8
9
4
6
9
5
1
3
7
3
8
5
1
2
2
6
2
5
6
4
2
9
7
5
1
5
6
3
4
2
8
2025-01-31(Beginner) Puzzles
Step-by-step puzzles for smooth solving
If stuck, move to other parts and return later.
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.