00:00
4
3
5
8
9
6
1
3
9
5
9
6
9
8
1
8
4
7
2
9
6
2
7
8
4
3
7
6
4
2
8
2025-11-02(Intermediate) Puzzles
Moderately challenging puzzles
Arrange numbers effectively to progress.
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.