00:00
6
5
9
3
1
3
8
7
6
5
3
2
8
5
3
9
4
8
5
6
2
2
9
8
6
7
3
7
4
8
9
2025-11-04(Intermediate) Puzzles
Think carefully for the best moves
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.