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5
8
1
4
9
5
6
9
5
3
1
7
7
4
9
5
6
1
8
7
8
4
6
1
3
8
5
7
2
9
6
2025-02-24(Intermediate) Puzzles
Enjoy solving with thoughtful placement
Postpone complex squares and start with easier numbers.
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.