00:00
5
4
3
1
4
7
9
6
1
4
3
2
1
3
4
2
9
8
7
5
4
1
2
3
8
6
8
7
5
6
2
2024-01-24(Intermediate) Puzzles
Puzzles suitable for logical challenges
Start with slightly harder squares to grasp the flow.
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.