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9
4
8
7
6
5
6
1
5
2
7
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3
5
5
6
2
7
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6
9
4
1
9
5
3
6
3
6
1
8
2024-01-26(Intermediate) Puzzles
Puzzles to challenge logical thinking
Solve less confusing parts first and follow order.
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.