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8
2
4
6
2
5
7
6
9
1
8
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9
2
4
7
6
7
6
1
2
4
7
3
7
2
5
6
9
3
7
2025-04-17(Intermediate) Puzzles
Read number patterns logically
Read number patterns to identify efficient steps.
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.