00:00
6
8
4
1
1
9
4
3
4
3
5
1
4
7
6
3
5
9
8
9
2
7
4
6
1
8
1
9
5
8
7
2025-03-24(Intermediate) Puzzles
Standard difficulty puzzles
Review candidates if stuck and reorganize.
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.