00:00
8
3
2
2
3
7
4
6
5
1
9
3
2
6
2
1
6
4
7
5
3
7
4
2
6
9
3
9
8
4
7
2025-03-30(Intermediate) Puzzles
Moderately challenging puzzles
Organize candidates and solve step by step.
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.