00:00
6
8
5
4
7
1
3
4
1
2
4
5
7
9
2
1
6
7
8
5
4
5
7
8
2
5
5
3
6
8
4
2025-10-30(Intermediate) Puzzles
Enjoy solving with thoughtful placement
Compare candidates to find the best order.
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.