00:00
2
7
8
7
3
1
2
8
1
9
5
7
6
3
2
6
1
9
7
8
5
4
5
1
3
2
6
1
9
4
3
2025-01-24(Intermediate) Puzzles
Enjoy solving with thoughtful placement
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.