00:00
7
8
3
3
8
6
2
5
4
3
9
4
9
1
2
4
8
8
3
1
9
2
4
5
3
1
4
3
2
9
6
2025-07-01(Intermediate) Puzzles
Moderately challenging puzzles
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.