00:00
9
6
1
7
3
9
9
4
6
3
1
6
4
9
7
5
3
4
7
9
1
8
7
1
2
7
3
4
5
6
8
2025-10-03(Intermediate) Puzzles
Combine logic to solve efficiently
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.