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3
5
9
7
1
6
1
8
3
6
3
9
2
1
9
1
3
5
2
6
4
9
3
1
6
4
1
8
3
9
7
2024-07-15(Intermediate) Puzzles
Enjoy using your brain to solve puzzles
Take your time if stuck and review candidates.
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.