00:00
9
6
8
1
2
5
3
7
8
1
2
2
4
6
8
1
2
5
6
7
3
4
4
6
7
2
7
3
1
9
5
2024-09-04(Intermediate) Puzzles
Logic-driven puzzles for step-up solving
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.