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3
4
9
2
7
7
2
5
3
6
2
3
8
5
4
9
8
2
7
3
5
1
7
2
3
1
4
8
9
3
9
6
8
6
7
2
3
1
8
1
2
2025-06-21(Beginner) Puzzles
Enjoyable puzzles to practice placement
Review your progress several times to minimize mistakes.
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.