00:00
8
9
7
4
7
8
3
9
6
1
2
9
6
3
1
2
3
4
8
4
1
3
8
5
6
7
1
2
9
6
7
2025-08-30(Intermediate) Puzzles
Judge placement strategically
Analyze row and column patterns for optimal steps.
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.