00:00
3
5
1
2
4
7
3
1
9
9
1
4
7
1
7
3
1
6
3
2
9
4
7
2
1
3
5
2
8
6
3
2024-02-23(Intermediate) Puzzles
Think carefully for the best moves
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.