00:00
3
5
5
8
1
9
3
2
4
6
9
3
4
8
2
4
3
8
5
6
9
1
3
7
5
7
6
9
2
1
8
2024-07-28(Intermediate) Puzzles
Puzzles suitable for logical challenges
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.