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6
9
3
8
1
5
2
4
9
4
3
5
9
4
8
1
8
5
3
7
6
2
8
6
2
3
9
5
5
3
8
2025-10-14(Intermediate) Puzzles
Excellent brain exercise
Read number patterns to identify efficient 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.