00:00
2
5
6
1
3
9
8
7
7
4
6
1
4
8
2
5
5
3
9
5
1
4
7
8
5
3
4
9
3
6
7
2025-04-08(Intermediate) Puzzles
Strategically plan number placement
Use notes to reduce hesitation.
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.