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7
8
6
4
5
6
5
3
8
7
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9
5
9
2
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7
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9
8
3
1
2
9
5
7
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4
2
1
3
2024-08-05(Intermediate) Puzzles
Solve step by step with reasoning
Analyze row and column patterns for optimal 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.