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8
1
9
6
7
8
4
6
7
9
8
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5
1
7
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9
5
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4
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6
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8
2
1
5
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7
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9
2024-10-29(Intermediate) Puzzles
Puzzles suitable for logical challenges
Compare candidates to narrow options efficiently.
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.