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4
2
6
8
5
2
8
4
3
1
4
5
9
8
3
5
6
2
1
8
5
6
8
3
4
4
7
1
3
4
5
2024-07-12(Intermediate) Puzzles
Read number patterns logically
Use notes to reduce hesitation.
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.