00:00
8
5
7
3
7
3
8
4
6
1
5
3
9
8
2
8
7
3
4
4
1
1
7
8
6
5
8
4
2
6
9
2025-10-29(Intermediate) Puzzles
Apply logic to solve effectively
Analyze row and column patterns for optimal 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.