00:00
5
8
2
6
3
8
1
9
8
6
7
1
3
4
2
1
3
4
9
6
3
8
5
1
7
4
7
1
2
3
6
2024-03-30(Intermediate) Puzzles
Tackle slightly complex patterns
Advance gradually toward completion.
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.