00:00
8
1
8
4
6
3
7
5
1
4
6
9
6
7
5
4
2
9
2
7
3
6
7
9
4
6
2
7
3
4
2
2024-12-22(Intermediate) Puzzles
Challenge that requires careful thought
Organize multiple candidates to avoid mistakes.
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.