00:00
8
7
2
6
6
5
9
4
5
3
9
2
3
4
1
5
7
1
5
3
6
1
5
3
8
9
4
4
1
8
7
2024-02-20(Intermediate) Puzzles
Analyze number patterns carefully
Use notes to manage complex candidates.
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.