00:00
3
4
6
5
2
9
8
1
9
3
8
4
4
1
5
7
1
9
8
6
2
8
4
5
3
2
8
4
6
5
2
2024-12-30(Intermediate) Puzzles
Puzzles suitable for logical challenges
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.