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3
6
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2
8
9
7
1
9
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3
1
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9
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7
7
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8
9
8
7
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4
6
3
5
8
5
8
2
1
3
2
1
3
6
9
5
7
4
2025-08-17(Beginner) Puzzles
Solve puzzles while thinking of number positions
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.