00:00
6
2
3
7
2
4
4
6
9
7
7
8
5
2
1
4
6
5
4
3
2
6
9
2
1
3
7
8
4
6
3
2025-10-05(Intermediate) Puzzles
Puzzles suitable for logical challenges
Use notes to reduce hesitation.
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.