00:00
3
5
8
9
1
9
8
4
6
3
2
7
3
8
6
1
2
6
7
2
4
9
1
3
1
5
2
4
5
2
6
2024-01-17(Intermediate) Puzzles
Apply logic to solve effectively
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.