00:00
7
4
2
6
5
8
4
8
2
1
7
9
9
1
7
4
3
6
9
2
3
2
3
9
7
4
1
2
9
5
6
2024-12-21(Intermediate) Puzzles
Standard difficulty puzzles
Solve less confusing parts first and follow 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.